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Evaluation of durability aspects of nonwoven geotextiles for protection of PVC geomembranes in dams, reservoirs and canals
Francesco Fontana, AssINGeo President, Italy
Thursday, April 6, 2017 · 3:13 p.m. · 13m 51s
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became o. my a small presentation is just uh try
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to focus a you're a tension on uh
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a durability not just uh as a matter of full feeling good
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a specification or a. c. marking something like that
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but uh also in terms of uh uh
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not only in terms of in excess but also in terms of performance test and
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uh uh in terms of risk assessment of the product as a
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as uh will uh to lease a goal um i've uh i've chosen to
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tell you something about an application uh for protection
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in a a damn sandwich or worse
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it is very uh clear and say uh evidence that
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uh the main uh uh and uh traditional
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a function of a a just text fell in the winter
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tech still in uh uh such kind of application is
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protection of course uh and uh uh it is
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also a high i didn't that's one
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of the joys expose the durability comes to be a any very important uh issue
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and uh so the the point is
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a traditionally uh i yeah
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i think in terms of i and i say traditionally because i think just in that exchange text as are not an innovation anymore
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yeah as as such so i think the traditional uh
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an air occasions uh in addition forever functions and
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original uh in the traditional approach of the designers
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is uh about a function about a protection
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mainly during the installation time which of course is uh still remains the most critical time
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in the in the in the life of a lot of it was just synthetic
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and uh okay some other minor or or compliment complimentary functions
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like a a kind of bridging and sometimes a drainage
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uh but uh more and more important uh is uh the
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occasionally it's kind of feel of uh mm composites made with uh you
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what people can layer uh typically be seems kind of application ah
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uh already lined in the in the factory with the
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knowledge of textiles and uh uh this a solution
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enables the of course to save a lot installation costs which is
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well it's a an important issue and uh it's getting a
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better dimensional stability to the b. b. c. membrane
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and uh improving uh it's mechanical performance and uh
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uh um so and is giving up
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i'm i'm i'm i'm much better uh safety for
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the long term performance of the membrane itself
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but it brings a then uh it farther problem uh uh compared to the
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usual uh installation with the the two layers because you have to take into account
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to all uh the interaction between the age of textile indigent membrane and uh
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usually if that would be see a membrane p. d. c. is not uh electrically
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a friendly with the whole problem so online inc
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uh is uh is not uh that easy
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and uh you have uh to take into account uh some uh other or problems
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like uh the matter of the annotation attention must be good of
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course because you have a slow when you want a the
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it too much you just to stay together but you also it but it cannot
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be too strong because uh it is necessary during the installation sometimes too
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to peel and uh because uh uh you have to cut uh you have to well the the of two for all
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the a. b. a. d. angle so and the uh customise the the the the product to the to the site
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so you it it's you have to you needed to have the possibility to
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to peel and uh possibly having no remaining of fibres
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into the p. d. c. because they eh
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the specific weight of the two of polymers uh is different and by welding gear of course you
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reduced to a liquid state and uh i would probably would of float over the p. c.
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making a film that uh with the uh might make a lot of troubles in a in a welding
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so uh but these are a little more than simply they eh
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you'll be let's say okay i skip about the traditional uh uh um tests uh
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you have to carry on a on a mature for protection and uh um
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i want to
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um we drive your attention on the fact that durability
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brought these are sometimes underestimated how because i
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sometimes uh it when the designer knows this year will be covered
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where they don't think in the long term durability is uh an important issue but uh uh i will show
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you that uh uh sometimes this is uh not the case and uh as a part of uh
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reese assessment uh in your project uh it would be good to take into account
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the durability even if you think you're going to cover the material yeah
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in a in a in a short term or according to the to the program it should be a covered with a short time
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so uh uh
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again durability of course uh maybe for your to the eh
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european how my stands durability is always consider at
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an essential property but uh it's a
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the way it is treated in a in the standards is uh uh just if you take they
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you missed abilities just to determine the time needed
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before the big rotation processed the starts
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and uh it it doesn't say anything about uh the the the diagram a offer
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the degradation after the depression the correlation starts so uh you could have a
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good the product that you can state uh thirty days a
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exposure before starting any degradation process but then uh
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how long will it really trial last uh in the e. demands for years to come
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so which i take a uh this case history uh
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to uh uh explain uh this uh uh
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point of view and the uh the the it is a case uh in uh
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in the space and probably the houses are rather sunny place the the
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mm average uh irrigation rate is a hundred and sixty chloe industry or the average
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of of europe for multiple always hundred and twenty so all of it so
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but in this case in the the project that was uh uh uh what the
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plan was to cover the material with uh some uh uh stones rather quickly
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i show you a here which says this is a very simple
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diagram that is coming from as sixteen years of uh
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a measurement about the uh the probation on the roof so measuring uh uh the full
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spectrum of a radiation and the u. v. and uh uh setting get uh from
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uh i. b. empirical uh findings uh the the uh the correlation rate to in this
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case is a for a five hundred uh uh grants a bully problem material
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the and the actual these because this has been the uh
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the one chosen for these camper bay project the protection
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in uh in the in the specific case uh uh the protection was
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intended uh both on a on both sides of the membrane
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and both sides i've been a a lined uh
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in the factory so prefabricated the because
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the lower side where your c. d.'s all pole yes that one grams
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was intended to get to your protection during installation against the supposed
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to be smooth the slope of prepared by the contractor
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though all the upper side had to or protect the
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the the membrane from a bay it rocks
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for link from a certain height uh for the covering all of up the slopes of other sever
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so well you see here the or placement of the course doubles
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but there is about and here comes the the the matter with the this the risk assessment that was mentioned
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for some uh uh not technical reasons sake
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economical bureaucratic stuff the the project had to be stopped after
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they installation of the uh of the membrane and
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before the the the covering with the with the rocks
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so uh the owner was extremely worried about
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the performance uh all uh all of the material eh
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and they didn't know how long this work ethic uh a problem was going to last
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so uh uh they asked of uh for uh an assessment of the durability
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even if everybody was not required in in the specification at all at the beginning
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but the uh actually the the material chosen uh i was uh
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good enough to exceed the eh specifications by about thirty percent
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and i mean the mechanical specifications so uh
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with the use of of this simple oh a diagram you you would you have
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xena earlier we have been able to calculate ah how many
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hours of your the asian what a well needed to
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reduce the performance by thirty percent so the to stay within
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the limits of the specification of problem mechanical performances
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and uh uh this has been calculated uh in about a seventy days
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uh and uh uh so seventy days as being the deadline uh we have given today installer
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if you if you are are able to solve your regretted problem within seventy base
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it will work you will have no problem if you will have a a longer uh uh a period
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where you have to think uh about a couple of things for example to reduce the height
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uh from which you are dropping you stole so that to reduce
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the the the energy uh uh impact incubator just pack spell
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or you have to think about a sacrifice will uh layer to protect
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uh the the existing or a material it would be very costly solution
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likely they could solve the problem within the seventy days but the
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release seventy days they have been able to a sleep per
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a a better more rest things or sleep
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uh huh that's back
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so uh coming directly to the conclusions
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so they're a high reliability of the procedure membranes sealing systems for them
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sandwich errors can be improved and reassured by evaluating the durability aspects
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all the you just expense uh due to the interaction with the protection to textile and environment
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of course uh i i just get the the the the point about evaluations about uh actually the of the silence
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kind of things which i think uh it i give a
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bi yeah as as i shoot and uh um
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of course it does must be observed that uh the
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letter to test alright important about uh indicated
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and not sufficient to forecast precisely the service live in connection to weather
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so will the era or the hope ah yes pressing is that that more studies
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we'll uh fox the correlation between leveraged past performance test on the field about durability
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and uh but in the meantime i i would recommend everybody to minimise
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the risk for your project choosing a durable i uh material
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