Player is loading...

Embed

Copy embed code

Transcriptions

Note: this content has been automatically generated.
00:00:01
sorry my presentation would talk about a specific application of each of the
00:00:05
style and not just a little much to start bonded with
00:00:08
she wanted to to provide drainage of composite material for handicapped landfill
00:00:12
cap in the we have been seen before that uh
00:00:15
this type of product can be using other part in the landfill
00:00:18
such as for each shape production which should the collection
00:00:22
but the normal yes please this is what is foreseen and it's a
00:00:25
load for for example now are coming over the counter this immediately
00:00:30
the the user would your compose it uh and the jews and
00:00:33
it takes is merely for scene alone only for the capping
00:00:37
particularly related to the capping the there is a rule that is the european uh
00:00:41
documented this ninety ninety nine thirty one c. e. that was dated april of nineteen ninety nine
00:00:48
that was dating indication about the way it capping for a landfill should be designed
00:00:53
he was taking a course starting with the gas spending layer that was married only for a uh mm
00:01:01
norman's out of those uh and as others waste is a a and not for you know the network daily
00:01:07
or when i mean one thickness of hard for me to with a minute maximum productivity of pantomime shaped
00:01:13
left official waterproof reinforce levels weighty waste is only that he's in jail membrane
00:01:19
what are the range layer with the minimum thickness of half a meter that should be kept go to avoid the
00:01:25
the development or whether read outside the damage layer itself and
00:01:29
on top of that a top story one meter
00:01:33
the is that active uh has to be taken county by county neatly this was taken by
00:01:38
a a glacial on the you that was a set in two thousand and three that was for we more
00:01:43
or less the same rules but it was quite strict because was not following in the beginning that
00:01:48
the use of any alternative and was dividing go into three categories landfill
00:01:53
has out those known as an office and you have that
00:01:57
the function of the capping system according to the
00:02:00
european and also to the national regulation i
00:02:03
is uh first of all to provide insulation waste is from the external environment or
00:02:08
control the water from the precipitation that can enter into the
00:02:12
landfill body but also from the the surface water
00:02:15
that can enter into the waste itself that's so the runoff that can come from outside
00:02:21
and finally to avoid the risk of subsequent and sliding going in the capping itself
00:02:28
the typical yeah what are these for c. enough for the three cases so it has a taco thickness that
00:02:34
but the ranges between two and two and a half meter
00:02:37
and this is something that uh immediately uh is uh
00:02:42
can give some and doubt about the possibility to achieve the
00:02:47
the third that thought that the the last task that is
00:02:50
the be avoiding that he's cop subsidence and sliding yeah
00:02:54
when you have to provide the two and a half meter of
00:02:57
ground larva or play material on top of the landfill
00:03:02
so those are the schemes that has already been discussed the but
00:03:06
the problem that are connected is that the those that dignity
00:03:09
out of uh sometimes not compatible with the geometry of the landfill
00:03:12
ball this particular when the landfill has been uh uh
00:03:16
cultivated the well before the regulation or without following any regulation
00:03:23
in some cases the use of natural material that is expensive or is difficult that
00:03:28
to be achieved because it's not available are closer to the side to
00:03:33
the huge quantity of not or not either these necessity to follow strictly the regulation
00:03:39
makes it very difficult to to get into the probably the quality control of the material
00:03:43
itself because having the same materials coming from the same source is almost impossible
00:03:48
and then guarantee that the the property seven matches before
00:03:52
the who landfill is almost impossible and the
00:03:56
this is what a russell was say in the beginning a lot of
00:04:00
cases the use of natural materials is not properly environmentally friendly
00:04:06
because uh you have uh to transport a huge amount of material
00:04:10
you have a cost in terms of transportation of pollution
00:04:14
of uh will reset that yep yep to escalate mountains you have discovered it's or you
00:04:20
so yeah but it be your impact or intentional over the imbibe the that you have damaging
00:04:27
the regulation that is not forcing the presence solve for you person date is in particular trendy
00:04:32
justin date is that can guarantee a reduced weight and thickness and then reducing that
00:04:38
the apply the stress and then reducing the risk of subservience
00:04:42
that was one of the aim of the landscaping
00:04:45
you reduce the costs for the production believe it in distillation
00:04:48
show you load the owner up to save some money
00:04:52
you can be the proven answer to for information about the the flow capacity and the drainage allay your
00:04:58
and you came for sure guarantee it technically equivalent solution
00:05:05
i mean to the financial known what to add what you need that to provide
00:05:09
that this type of application it is uh if you trade show no that
00:05:13
is achieved by age it is tied it is a low free passage a
00:05:17
perpendicular to the material uh preventing that the solid particles to pass so
00:05:21
and the drainage need human that hello free passage with dean and the thickness of the material
00:05:27
several type of product that available on the market with different shape it according
00:05:31
all the production piper but each of them at the same parr also
00:05:35
to intercept the water perpendicular to the layout and to drain need that would be in the late itself
00:05:42
so if we substitute the natural way yeah right we get
00:05:46
officially other for example with the first case that
00:05:49
for a a unit the ways that we can save a half a meter
00:05:53
but we could use it in the important way the way the
00:05:58
the reduce uh the the deduction is high uh if we consider known as
00:06:02
out of those sort of a week or so that has out
00:06:04
those weights this where the deduction is up to one meeting we passed
00:06:08
from two and a half meter to one and a half meter
00:06:12
obviously most of the clay layer can be substituted by an active usually about
00:06:16
this is not the topic of my discussion about this uh said before
00:06:20
they play can be substituted b. g. c. ed or sometimes we did you membrane
00:06:26
the problem is choosing the the drainage of composite that that that can be accepted
00:06:31
the as an equivalent material to the grammar layer that is going to substitute
00:06:37
and to be a set it the it has to be proven that that material
00:06:40
that has a easy equivalent to the to the net or the way
00:06:44
you that initially it that is replacing that means that can guarantee in equivalent
00:06:49
or whatever or gas discharge it to the materiality substituting ending case uh
00:06:54
of uh the water a a collection layer on top of the linings sees them
00:07:00
the racial composition prevented the development of what i read that the
00:07:04
best to guarantee the drainage of the water that can enter
00:07:07
into the captain system during a critical or rainfall event or
00:07:11
whose intensity is known from a design point of view
00:07:16
now the big problem easy twenty five which is the following it initially yet or
00:07:20
that is on this will buy these subjected to a uniform rate
00:07:24
only could supply because this is governed by differential equation
00:07:30
in the case of the landfill are normally the length uh is much bigger than the thickness oh
00:07:35
taking into account the beast apple shape is very
00:07:39
complicated very complex and is not strictly miss
00:07:42
sure simplified yet conservative approaches suggested ball and consisting naval waited the
00:07:47
maximum flow that can pass through a natural drainage layer
00:07:51
d. been they probably conduct the beauty of the grain and know that that energy
00:07:55
the natural drainage and then the really great in the offer the layer itself
00:08:01
so the flow rate according to the dub c. low is given by a day hydraulic
00:08:05
conductivity time say the area through which the flow expressing times the grainy into
00:08:11
if we consider one meter uh material as it always happens so we did using date except
00:08:17
we had the you will need the flow rate to it is given by the determined by the hydraulic conductivity
00:08:23
time the thickness time they're they're really great in the last i calculate these day you arrive to compare
00:08:29
b. is a flow rate to weed the the flow rate of the
00:08:33
joe compose it under the same design condition and the flow rate
00:08:36
of the joe compose it can be tested according to standard easy
00:08:41
and i saw twelve nine five eight or whether you apply
00:08:45
eh the joke on posey to sorry to see the arrow or it but i can see
00:08:50
you put a digital compose it on that i is structurally discoverable to apply vertical stress
00:08:56
then you apply a difference in whatever right between uh the eh
00:09:00
and transcend the x. it uh off the sample itself or
00:09:04
and you apply a steely full when the flow is is t.
00:09:08
v. and remains constant you measure the amount of water
00:09:11
then you increase the water or you change the water at the at the at the end the you've got
00:09:16
chapter like the one that you see on the right the bottom corner
00:09:21
where the where the in the y. axes they probably floor a trendy x. x. is the compress it stress
00:09:26
they're separate four hundred three beeps integrate into this one a point five and point
00:09:31
one at that correspondent was little bit or any inclination that the is that
00:09:35
ninety degrees and thirty degrees out about five degrees on the orders on them
00:09:41
this is the next day so it gives an information about the shorten performance
00:09:45
too but with the the long term performance of the last several
00:09:48
a possibility one is to for for example america's standard score g. r.
00:09:53
i. d. c. eight uh it was developing two thousand one no
00:09:57
it starts from tested that uh our uh perform uh uh for over one hundred hours
00:10:02
so in order to able waited at actually in the flow rate with diamond
00:10:07
and the ease perform after the making of that but for for banning compressing
00:10:12
crypt best of that should last at least ten by ten thousand however
00:10:16
and you calculate the effect or safety as a racial between that
00:10:21
yellow work flow rate tender quiet for eight or a the
00:10:24
allowable transmit receive it in the right person see it
00:10:28
yellow were bowler doesn't seem to for a pay is a calculated as the flow rate talk
00:10:33
presents t. v. t. after one hundred hours of test to divide it by production factor
00:10:39
take into account the create put that to the material can and that was but also
00:10:43
the chemical and or biological clock bingo that are related to the durability of
00:10:47
the material and the fact that the the material cannot be clogged or can added
00:10:51
that reduction in the possibility to do all the water to enter into it
00:10:57
now which is the future uh yeah they need to get the the maximum level or to the product uh
00:11:03
i brought a most so of the just the producer to make a big effort to develop a new
00:11:09
type of product that we'd be normative solution not believing in mind you need that to the discourse
00:11:16
so possible action out of uh mainly the that acted toward evaluation of the
00:11:21
global behaviour of the system and not of did you complete that one
00:11:25
little no it is improving the mechanical interaction between geo compose it in the other part of the
00:11:30
body of system in order to improve the stability or improving they product behaviour but your composite
00:11:37
without increasing the weight or if possible or by trying to reduce the weight itself
00:11:43
the first type of uh actual now i i could be
00:11:47
achieved by increase of the sheer resistance at the
00:11:50
interface between different type of material that sure compose the
00:11:54
torture competence so let that are uh uh
00:11:58
taking part of the toddler forming 'cause that that that forming a day is that the government getting sick
00:12:05
and those can be evaluated through labour to test the the first one is the tilting table or that comes
00:12:10
sees that you do boxer dapper one uh can slide
00:12:14
overalls uh on the over the lower one uh
00:12:17
i don't know what box uh is starting to the the the cost and the rate and the light
00:12:22
the friction anger that is that a lot of the interface that that is base exactly
00:12:26
eh at the contact between a bit too boxes so it is not enough and apples boxes stop the slide
00:12:34
the second type of test is it that she up as
00:12:37
the whereby you apply day interface that you want
00:12:40
less that between the the lower and upper boxer uh the apple boxes speaks the the and uh
00:12:47
in eh you need that you apply vertical this workshop the the what box set you free to more for
00:12:52
typical results for those type of interface that ranging between five and thirty five degrees uh
00:12:58
and as you can see those up best uh that uh this is coming
00:13:02
from by blogger everybody's a huge amount of values that are available up
00:13:06
you may be over fee and the normally the critical interfaces for like it being a out between
00:13:11
uh is with your membrane and aegean it origin in the age or you compose it that
00:13:17
and uh so far that tentative was the use of tax sort of membrane now with your
00:13:21
compulsively to feed that because this was increasing a lot of the fiction and or
00:13:27
in development at that was achieved the recently in the last five
00:13:30
years say is a consisting in creating by composite materials so
00:13:35
that data and material consisting in a a a
00:13:38
conventional high density polyethylene g. on it the
00:13:42
with a lady uh it's the no it could be need a city to that is extruded together
00:13:47
with that unit to do the the process so it's a part of that unit itself
00:13:51
that is ghetto to increase the fictional behaviour or the product when it is placing
00:13:55
contact with this new movement membrane so if we summarise the results off
00:14:01
uh it back component material that that the blue line on the top or both in the rhino but
00:14:06
conditioning we compare the value with getting table that there's two round to be around and up
00:14:11
five p. p. h. get these the corresponding to it these more or less
00:14:15
twenty five centimetre sawyer and the the share box that it is
00:14:20
from pink in p. a. uh in the bar vote
00:14:24
you can see that the for the no but there you are
00:14:26
the best performance is obtained by the by component that
00:14:30
in dry condition then that he is uh the traditional
00:14:34
that your compost to do that tested membrane uh
00:14:37
it additional uh with a texan membrane in what condition
00:14:40
and then the the big component in what condition
00:14:43
but when the search obviously is going to bother then came p.
00:14:47
a. get is just fifty centimetre story then the by component
00:14:52
has a performance that is better or small aspect to the
00:14:55
conventional that you're composing the with the technology membrane
00:14:59
if we consider that the regulation as for one with that story that you
00:15:03
can imagine that uh the advantage i use it immediately ab didn't
00:15:07
so some cases this was a case where a a a landfill over a d. a. a. x.
00:15:13
or state that after twenty out from the cloth lot of was having that suffering uh
00:15:18
manage your infiltration water due to the fact that it was
00:15:21
constructed following the regulations so using play in naturally or
00:15:26
the clay was subjected to see the or cracks of through which the whatever it was entering or
00:15:31
and uh it you won't ever in order to save
00:15:34
his nanny decided to dismantle completely the opposite partner
00:15:38
into place on top of the clay layer a it's
00:15:42
more for high density polyethylene joe membrane now
00:15:45
these type of joe composer and then and the the top sawyer on top of everything they place that
00:15:51
uh install of uh uh energy plant uh in order to
00:15:55
get back some of the money they were spending
00:15:59
another case uh that these uh uh not that important in
00:16:03
terms of volume uh quite interesting that for the application
00:16:07
was a landfill where at the axes think a geo membrane uh
00:16:12
ease on place was founded to have some wholesome to have some problems out
00:16:17
rather than taking out or the capping system and you or whatever decided to uh act only
00:16:23
in the portion on what i have read the material was a softening damage it
00:16:28
so the mighty the top story then the drainage layer
00:16:31
was excavated the only where the whole sweat founder
00:16:35
a small fight as the polyethylene membrane was a place there's a patch on top
00:16:40
of the eh part that that was a interested by the whole or
00:16:45
and uh a on top of that uh these type of ritual composite want to store
00:16:49
the because it was a guaranteeing a proper friction without the need to have a
00:16:54
encourage strange because it was not possible to be this type of strange
00:16:59
not the case we have to unite being yeah about the more
00:17:03
or less the same application us move joe membrane with
00:17:06
the ranger compose it the and the top of that uh h. u. matter to retain one meter of sorry
00:17:12
second last uh uh improvement to use the modification in the structure and in
00:17:17
one of the modification the polymer uh in the past the date
00:17:23
most widely used type of region g. on it's like
00:17:26
where only produced by extrusion off identity polyethylene
00:17:30
as other type of party messages probably probably and we're very for dry land that low temperature
00:17:37
this is was there because all of uh the um the shape
00:17:42
or or uh the problem and chainsaw for probably properly in
00:17:45
eh but the ones so this same type of four problematic chains uh
00:17:51
i have on their go again uh eh orientation on now
00:17:55
by a a bi directional by directionless traction go
00:17:59
eh the these fragility tends to be much more of a a doctor mart much more reduce that
00:18:05
so the strategy on it uh that there is a a
00:18:08
shape but of a a a train an uh
00:18:12
let's say capital to guarantee high drainage or was that a lot the they are very light uh
00:18:18
uh the yellow to be stored with the baby light uh
00:18:22
uh wait and just the style on top of
00:18:25
uh eh a special type of elimination process says to be started because the normal flame
00:18:30
i mean issue number was destroying completely did unit for but the whole matter that
00:18:35
by problem emission was the was the but the product is coupled to guarantee high
00:18:39
what of discharge or even with a very high pressure and the most of all is capable to guarantee
00:18:46
a receipt will thickness that remains well above a ninety percent oh good regional one uh
00:18:52
even after applying the a pressure off one and the k. p.
00:18:56
a. for about a five hour on the hour so anymore
00:19:00
is a case where a these type of product to use use
00:19:03
we are in that's north in thirty telling more than uh
00:19:08
and we can come to the conclusion that the use of drainage property or use a solution not
00:19:14
that he's a technically bag unsustainable are these as being conform bide thousand that
00:19:19
sample all over the world even before uh the regulation was coming up
00:19:24
the dentist systemic can be designed in order to guarantee to design added that and if we
00:19:30
do the landfill owners and uh at the end of the day to the entire community
00:19:35
the top level of quality and safety much higher than the
00:19:40
quality and safety that you cannot she would naturally material
00:19:44
the best meant the research and development uh and the consequent the pollution in production process
00:19:50
so that that undergoing the last the upset by almost a or they just did this producer that
00:19:56
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
00:20:07
does a low we to reduce the cost of the works in the meantime

Share this talk: 


Conference Program

Introduction and coordination of the presentations
Daniele Cazzuffi, IGS Past President CESI SpA, Italy
April 6, 2017 · 2:06 p.m.
144 views
The contribution of geotextiles to the global sustainability agenda
Russell Jones, IGS President Golder Associates, UK
April 6, 2017 · 2:10 p.m.
186 views
Q&A The contribution of geotextiles to the global sustainability agenda
Russell Jones, IGS President Golder Associates, UK
April 6, 2017 · 2:28 p.m.
The behavior of earthworks with geotextiles after several decades
Jean Pierre Gourc, UJF Grenoble, France
April 6, 2017 · 2:31 p.m.
106 views
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.
206 views
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.
125 views
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.
205 views
Conclusions
Daniele Cazzuffi, IGS Past President CESI SpA, Italy
April 6, 2017 · 4:01 p.m.
128 views

Recommended talks

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.