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Correct design and proper applications of geocomposite drainage systems for landfills capping
Piergiorgio Recalcati, Technical Director Tenax SpA, Italy
Thursday, April 6, 2017 · 3:41 p.m. · 20m 19s
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sorry my presentation would talk about a specific application of each of the
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style and not just a little much to start bonded with
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she wanted to to provide drainage of composite material for handicapped landfill
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cap in the we have been seen before that uh
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this type of product can be using other part in the landfill
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such as for each shape production which should the collection
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but the normal yes please this is what is foreseen and it's a
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load for for example now are coming over the counter this immediately
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the the user would your compose it uh and the jews and
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it takes is merely for scene alone only for the capping
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particularly related to the capping the there is a rule that is the european uh
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documented this ninety ninety nine thirty one c. e. that was dated april of nineteen ninety nine
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that was dating indication about the way it capping for a landfill should be designed
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he was taking a course starting with the gas spending layer that was married only for a uh mm
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norman's out of those uh and as others waste is a a and not for you know the network daily
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or when i mean one thickness of hard for me to with a minute maximum productivity of pantomime shaped
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left official waterproof reinforce levels weighty waste is only that he's in jail membrane
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what are the range layer with the minimum thickness of half a meter that should be kept go to avoid the
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the development or whether read outside the damage layer itself and
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on top of that a top story one meter
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the is that active uh has to be taken county by county neatly this was taken by
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a a glacial on the you that was a set in two thousand and three that was for we more
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or less the same rules but it was quite strict because was not following in the beginning that
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the use of any alternative and was dividing go into three categories landfill
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has out those known as an office and you have that
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the function of the capping system according to the
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european and also to the national regulation i
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is uh first of all to provide insulation waste is from the external environment or
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control the water from the precipitation that can enter into the
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landfill body but also from the the surface water
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that can enter into the waste itself that's so the runoff that can come from outside
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and finally to avoid the risk of subsequent and sliding going in the capping itself
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the typical yeah what are these for c. enough for the three cases so it has a taco thickness that
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but the ranges between two and two and a half meter
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and this is something that uh immediately uh is uh
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can give some and doubt about the possibility to achieve the
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the third that thought that the the last task that is
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the be avoiding that he's cop subsidence and sliding yeah
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when you have to provide the two and a half meter of
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ground larva or play material on top of the landfill
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so those are the schemes that has already been discussed the but
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the problem that are connected is that the those that dignity
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out of uh sometimes not compatible with the geometry of the landfill
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ball this particular when the landfill has been uh uh
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cultivated the well before the regulation or without following any regulation
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in some cases the use of natural material that is expensive or is difficult that
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to be achieved because it's not available are closer to the side to
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the huge quantity of not or not either these necessity to follow strictly the regulation
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makes it very difficult to to get into the probably the quality control of the material
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itself because having the same materials coming from the same source is almost impossible
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and then guarantee that the the property seven matches before
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the who landfill is almost impossible and the
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this is what a russell was say in the beginning a lot of
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cases the use of natural materials is not properly environmentally friendly
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because uh you have uh to transport a huge amount of material
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you have a cost in terms of transportation of pollution
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of uh will reset that yep yep to escalate mountains you have discovered it's or you
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so yeah but it be your impact or intentional over the imbibe the that you have damaging
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the regulation that is not forcing the presence solve for you person date is in particular trendy
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justin date is that can guarantee a reduced weight and thickness and then reducing that
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the apply the stress and then reducing the risk of subservience
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that was one of the aim of the landscaping
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you reduce the costs for the production believe it in distillation
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show you load the owner up to save some money
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you can be the proven answer to for information about the the flow capacity and the drainage allay your
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and you came for sure guarantee it technically equivalent solution
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i mean to the financial known what to add what you need that to provide
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that this type of application it is uh if you trade show no that
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is achieved by age it is tied it is a low free passage a
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perpendicular to the material uh preventing that the solid particles to pass so
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and the drainage need human that hello free passage with dean and the thickness of the material
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several type of product that available on the market with different shape it according
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all the production piper but each of them at the same parr also
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to intercept the water perpendicular to the layout and to drain need that would be in the late itself
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so if we substitute the natural way yeah right we get
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officially other for example with the first case that
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for a a unit the ways that we can save a half a meter
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but we could use it in the important way the way the
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the reduce uh the the deduction is high uh if we consider known as
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out of those sort of a week or so that has out
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those weights this where the deduction is up to one meeting we passed
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from two and a half meter to one and a half meter
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obviously most of the clay layer can be substituted by an active usually about
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this is not the topic of my discussion about this uh said before
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they play can be substituted b. g. c. ed or sometimes we did you membrane
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the problem is choosing the the drainage of composite that that that can be accepted
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the as an equivalent material to the grammar layer that is going to substitute
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and to be a set it the it has to be proven that that material
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that has a easy equivalent to the to the net or the way
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you that initially it that is replacing that means that can guarantee in equivalent
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or whatever or gas discharge it to the materiality substituting ending case uh
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of uh the water a a collection layer on top of the linings sees them
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the racial composition prevented the development of what i read that the
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best to guarantee the drainage of the water that can enter
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into the captain system during a critical or rainfall event or
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whose intensity is known from a design point of view
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now the big problem easy twenty five which is the following it initially yet or
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that is on this will buy these subjected to a uniform rate
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only could supply because this is governed by differential equation
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in the case of the landfill are normally the length uh is much bigger than the thickness oh
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taking into account the beast apple shape is very
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complicated very complex and is not strictly miss
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sure simplified yet conservative approaches suggested ball and consisting naval waited the
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maximum flow that can pass through a natural drainage layer
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d. been they probably conduct the beauty of the grain and know that that energy
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the natural drainage and then the really great in the offer the layer itself
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so the flow rate according to the dub c. low is given by a day hydraulic
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conductivity time say the area through which the flow expressing times the grainy into
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if we consider one meter uh material as it always happens so we did using date except
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we had the you will need the flow rate to it is given by the determined by the hydraulic conductivity
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time the thickness time they're they're really great in the last i calculate these day you arrive to compare
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b. is a flow rate to weed the the flow rate of the
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joe compose it under the same design condition and the flow rate
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of the joe compose it can be tested according to standard easy
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and i saw twelve nine five eight or whether you apply
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eh the joke on posey to sorry to see the arrow or it but i can see
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you put a digital compose it on that i is structurally discoverable to apply vertical stress
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then you apply a difference in whatever right between uh the eh
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and transcend the x. it uh off the sample itself or
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and you apply a steely full when the flow is is t.
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v. and remains constant you measure the amount of water
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then you increase the water or you change the water at the at the at the end the you've got
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chapter like the one that you see on the right the bottom corner
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where the where the in the y. axes they probably floor a trendy x. x. is the compress it stress
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they're separate four hundred three beeps integrate into this one a point five and point
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one at that correspondent was little bit or any inclination that the is that
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ninety degrees and thirty degrees out about five degrees on the orders on them
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this is the next day so it gives an information about the shorten performance
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too but with the the long term performance of the last several
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a possibility one is to for for example america's standard score g. r.
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i. d. c. eight uh it was developing two thousand one no
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it starts from tested that uh our uh perform uh uh for over one hundred hours
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so in order to able waited at actually in the flow rate with diamond
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and the ease perform after the making of that but for for banning compressing
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crypt best of that should last at least ten by ten thousand however
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and you calculate the effect or safety as a racial between that
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yellow work flow rate tender quiet for eight or a the
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allowable transmit receive it in the right person see it
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yellow were bowler doesn't seem to for a pay is a calculated as the flow rate talk
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presents t. v. t. after one hundred hours of test to divide it by production factor
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take into account the create put that to the material can and that was but also
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the chemical and or biological clock bingo that are related to the durability of
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the material and the fact that the the material cannot be clogged or can added
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that reduction in the possibility to do all the water to enter into it
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now which is the future uh yeah they need to get the the maximum level or to the product uh
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i brought a most so of the just the producer to make a big effort to develop a new
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type of product that we'd be normative solution not believing in mind you need that to the discourse
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so possible action out of uh mainly the that acted toward evaluation of the
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global behaviour of the system and not of did you complete that one
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little no it is improving the mechanical interaction between geo compose it in the other part of the
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body of system in order to improve the stability or improving they product behaviour but your composite
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without increasing the weight or if possible or by trying to reduce the weight itself
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the first type of uh actual now i i could be
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achieved by increase of the sheer resistance at the
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interface between different type of material that sure compose the
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torture competence so let that are uh uh
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taking part of the toddler forming 'cause that that that forming a day is that the government getting sick
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and those can be evaluated through labour to test the the first one is the tilting table or that comes
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sees that you do boxer dapper one uh can slide
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overalls uh on the over the lower one uh
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i don't know what box uh is starting to the the the cost and the rate and the light
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the friction anger that is that a lot of the interface that that is base exactly
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eh at the contact between a bit too boxes so it is not enough and apples boxes stop the slide
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the second type of test is it that she up as
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the whereby you apply day interface that you want
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less that between the the lower and upper boxer uh the apple boxes speaks the the and uh
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in eh you need that you apply vertical this workshop the the what box set you free to more for
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typical results for those type of interface that ranging between five and thirty five degrees uh
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and as you can see those up best uh that uh this is coming
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from by blogger everybody's a huge amount of values that are available up
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you may be over fee and the normally the critical interfaces for like it being a out between
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uh is with your membrane and aegean it origin in the age or you compose it that
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and uh so far that tentative was the use of tax sort of membrane now with your
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compulsively to feed that because this was increasing a lot of the fiction and or
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in development at that was achieved the recently in the last five
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years say is a consisting in creating by composite materials so
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that data and material consisting in a a a
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conventional high density polyethylene g. on it the
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with a lady uh it's the no it could be need a city to that is extruded together
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with that unit to do the the process so it's a part of that unit itself
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that is ghetto to increase the fictional behaviour or the product when it is placing
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contact with this new movement membrane so if we summarise the results off
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uh it back component material that that the blue line on the top or both in the rhino but
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conditioning we compare the value with getting table that there's two round to be around and up
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five p. p. h. get these the corresponding to it these more or less
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twenty five centimetre sawyer and the the share box that it is
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from pink in p. a. uh in the bar vote
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you can see that the for the no but there you are
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the best performance is obtained by the by component that
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in dry condition then that he is uh the traditional
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that your compost to do that tested membrane uh
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it additional uh with a texan membrane in what condition
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and then the the big component in what condition
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but when the search obviously is going to bother then came p.
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a. get is just fifty centimetre story then the by component
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has a performance that is better or small aspect to the
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conventional that you're composing the with the technology membrane
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if we consider that the regulation as for one with that story that you
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can imagine that uh the advantage i use it immediately ab didn't
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so some cases this was a case where a a a landfill over a d. a. a. x.
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or state that after twenty out from the cloth lot of was having that suffering uh
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manage your infiltration water due to the fact that it was
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constructed following the regulations so using play in naturally or
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the clay was subjected to see the or cracks of through which the whatever it was entering or
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and uh it you won't ever in order to save
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his nanny decided to dismantle completely the opposite partner
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into place on top of the clay layer a it's
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more for high density polyethylene joe membrane now
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these type of joe composer and then and the the top sawyer on top of everything they place that
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uh install of uh uh energy plant uh in order to
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get back some of the money they were spending
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another case uh that these uh uh not that important in
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terms of volume uh quite interesting that for the application
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was a landfill where at the axes think a geo membrane uh
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ease on place was founded to have some wholesome to have some problems out
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rather than taking out or the capping system and you or whatever decided to uh act only
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in the portion on what i have read the material was a softening damage it
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so the mighty the top story then the drainage layer
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was excavated the only where the whole sweat founder
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a small fight as the polyethylene membrane was a place there's a patch on top
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of the eh part that that was a interested by the whole or
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and uh a on top of that uh these type of ritual composite want to store
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the because it was a guaranteeing a proper friction without the need to have a
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encourage strange because it was not possible to be this type of strange
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not the case we have to unite being yeah about the more
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or less the same application us move joe membrane with
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the ranger compose it the and the top of that uh h. u. matter to retain one meter of sorry
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second last uh uh improvement to use the modification in the structure and in
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one of the modification the polymer uh in the past the date
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most widely used type of region g. on it's like
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where only produced by extrusion off identity polyethylene
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as other type of party messages probably probably and we're very for dry land that low temperature
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this is was there because all of uh the um the shape
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or or uh the problem and chainsaw for probably properly in
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eh but the ones so this same type of four problematic chains uh
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i have on their go again uh eh orientation on now
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by a a bi directional by directionless traction go
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eh the these fragility tends to be much more of a a doctor mart much more reduce that
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so the strategy on it uh that there is a a
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shape but of a a a train an uh
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let's say capital to guarantee high drainage or was that a lot the they are very light uh
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uh the yellow to be stored with the baby light uh
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uh wait and just the style on top of
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uh eh a special type of elimination process says to be started because the normal flame
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i mean issue number was destroying completely did unit for but the whole matter that
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by problem emission was the was the but the product is coupled to guarantee high
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what of discharge or even with a very high pressure and the most of all is capable to guarantee
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a receipt will thickness that remains well above a ninety percent oh good regional one uh
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even after applying the a pressure off one and the k. p.
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a. for about a five hour on the hour so anymore
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is a case where a these type of product to use use
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we are in that's north in thirty telling more than uh
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and we can come to the conclusion that the use of drainage property or use a solution not
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that he's a technically bag unsustainable are these as being conform bide thousand that
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sample all over the world even before uh the regulation was coming up
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the dentist systemic can be designed in order to guarantee to design added that and if we
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do the landfill owners and uh at the end of the day to the entire community
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the top level of quality and safety much higher than the
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quality and safety that you cannot she would naturally material
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the best meant the research and development uh and the consequent the pollution in production process
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so that that undergoing the last the upset by almost a or they just did this producer that
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coming out uh almost every yeah with the new product with new shape with new performance not
00:20:02
are guaranteeing the the market the cheaper and more perform material so
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does a low we to reduce the cost of the works in the meantime
Conference Program
Welcome note
Mr Jan Ketteman, Consultant, Chemicals and Technical Consumables Schlegel & Partner, Germany
April 4, 2017 · 2:06 p.m.
The Mobility of the Future
Dominique Taffin, Senior Manager Industrial Design, Yanfeng Automotive Interiors
April 4, 2017 · 2:10 p.m.
161 views
Q&A - The Mobility of the Future
Dominique Taffin, Senior Manager Industrial Design, Yanfeng Automotive Interiors
April 4, 2017 · 2:31 p.m.
An industry in flux – From Motor City to Silicon Valley
Adrian Wilson, Editor Sustainable Nonwovens, Author Automotive Textiles
April 4, 2017 · 2:38 p.m.
Q&A - An industry in flux – From Motor City to Silicon Valley
Adrian Wilson, Editor Sustainable Nonwovens, Author Automotive Textiles
April 4, 2017 · 2:58 p.m.
Lightweight Textile Automotive Floor Systems - recent developments and future needs
Dr James Taylor, R&D Manager, Autoneum
April 4, 2017 · 3 p.m.
Q&A - Lightweight Textile Automotive Floor Systems - recent developments and future needs
Dr James Taylor, R&D Manager, Autoneum
April 4, 2017 · 3:33 p.m.
The Success of Nonwoven Materials for Lightweight and Acoustic Efficient Components in Underbody Applications
Dr Egon Moos, Product Manager Underbody Systems, Röchling Automotive
April 4, 2017 · 3:36 p.m.
Q&A - The Success of Nonwoven Materials for Lightweight and Acoustic Efficient Components in Underbody Applications
Dr Egon Moos, Product Manager Underbody Systems, Röchling Automotive
April 4, 2017 · 3:54 p.m.
Potential of nonwoven-based structures for the automotive industry
Dr. Bernd Gulich, Saxon Textile Research Institute (STFI)
April 4, 2017 · 3:59 p.m.
Q&A - Potential of nonwoven-based structures for the automotive industry
Dr. Bernd Gulich, Saxon Textile Research Institute (STFI)
April 4, 2017 · 4:24 p.m.
Vote of thanks
Mr Jan Ketteman, Consultant, Chemicals and Technical Consumables Schlegel & Partner, Germany
April 4, 2017 · 4:25 p.m.
Introduction
Joerg Sievert, COO, Freudenberg Filtration Technologies
April 5, 2017 · 9:14 a.m.
Q&A - Air Pollution and Health: Challenges and Opportunities for Policy-makers, Citizens, and the Industry
Nino Künzli, Deputy Director Swiss Tropical and Public Health Institute
April 5, 2017 · 10:02 a.m.
Health care is more than medical care!
Prof. Dr. Sebastian Probst, DClinPrac, RN, Professor of tissue viability and wound care at the University of Applied Sciences Western Switzerland, Geneva, Switzerland
April 5, 2017 · 2:07 p.m.
Q&A - Health care is more than medical care!
Prof. Dr. Sebastian Probst, DClinPrac, RN, Professor of tissue viability and wound care at the University of Applied Sciences Western Switzerland, Geneva, Switzerland
April 5, 2017 · 2:29 p.m.
Introduction and coordination of the presentations
Daniele Cazzuffi, IGS Past President CESI SpA, Italy
April 6, 2017 · 2:06 p.m.
The contribution of geotextiles to the global sustainability agenda
Russell Jones, IGS President Golder Associates, UK
April 6, 2017 · 2:10 p.m.
The behavior of earthworks with geotextiles after several decades
Jean Pierre Gourc, UJF Grenoble, France
April 6, 2017 · 2:31 p.m.
Q&A - The behavior of earthworks with geotextiles after several decades
Jean Pierre Gourc, UJF Grenoble, France
April 6, 2017 · 2:51 p.m.
New Horizons for Nonwoven Applications in Geotextiles
Pete Stevens, Terram Solutions Sales Manager, Berry Global
April 6, 2017 · 3 p.m.
112 views
Evaluation of durability aspects of nonwoven geotextiles for protection of PVC geomembranes in dams, reservoirs and canals
Francesco Fontana, AssINGeo President, Italy
April 6, 2017 · 3:13 p.m.
Q&A Evaluation of durability aspects of nonwoven geotextiles for protection of PVC geomembranes in dams, reservoirs and canals
Francesco Fontana, AssINGeo President, Italy
April 6, 2017 · 3:27 p.m.
The role of nonwoven geotextiles in geosynthetics and key global markets and trends
George Papagiannis, Sales & Marketing Manager Thrace Nonwovens & Geosynthetics, Greece
April 6, 2017 · 3:30 p.m.
Q&A - The role of nonwoven geotextiles in geosynthetics and key global markets and trends
George Papagiannis, Sales & Marketing Manager Thrace Nonwovens & Geosynthetics, Greece
April 6, 2017 · 3:38 p.m.
Correct design and proper applications of geocomposite drainage systems for landfills capping
Piergiorgio Recalcati, Technical Director Tenax SpA, Italy
April 6, 2017 · 3:41 p.m.
Conclusions
Daniele Cazzuffi, IGS Past President CESI SpA, Italy
April 6, 2017 · 4:01 p.m.
Recommended talks
Correct design and proper applications of geocomposite drainage systems for landfills capping
Piergiorgio Recalcati, Technical Director Tenax SpA, Italy
April 6, 2017 · 3:41 p.m.
208 views