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Bentonite Sheet Waterproofing

Common Product
MasterFormat 07 17 16 Bentonite Composite Sheet Waterproofing

This information reflects our best understanding of product composition in 2021.

Bentonite sheet waterproofing membranes are comprised of a bentonite clay layer sandwiched between geotextile sheets and often laminated with a high density polyethylene (HDPE) film, though the HDPE layer is not always present. The geotextile...

More about Bentonite Sheet Waterproofing

Bentonite sheet waterproofing membranes are comprised of a bentonite clay layer sandwiched between geotextile sheets and often laminated with a high density polyethylene (HDPE) film, though the HDPE layer is not always present. The geotextile layers are most often comprised of one woven and one non-woven polyproylene sheet, though the geotextiles may also be made from other synthetic fibers such as polyester. Waterproofing is achieved through the absorptive and self-sealing properties of bentonite clay, which can absorb several times its weight in water and will expand and become impermeable when hydrated to fill punctures or tears in the sheet. The HDPE layer provides additional waterproofing and the polypropylene sheets protect the waterproofing membrane during installation and use. Naturally-occuring bentonite is most often used, though compounds such as polymer-modified bentonite may be used in limited situations. Bentonite sheet waterproofing may be used for waterproofing above- or below-grade horizontal and vertical surfaces and is often cited for use in blindside applications where waterproofing is applied before foundation substrates, such as concrete, are placed.

Name % Weight Whole Function GS Score Sources
Bentonite
1302-78-9
84.07% Water resistance Subscribe to view
Quartz
14808-60-7
4.94% Impurity Subscribe to view
Cristobalite
14464-46-1
0.99% Impurity Subscribe to view
Tridymite
15468-32-3
0.99% Impurity Subscribe to view
Polypropylene
9003-07-0
5.57% Polymer Subscribe to view
Irganox 1010
6683-19-8
0.03% Antioxidant Subscribe to view
Polyethylene
9002-88-4
3.35% Water resistance Subscribe to view
FLUX-CALCINED DIATOMACEOUS EARTH
68855-54-9
0.04% Anti-adhesive agent Subscribe to view
Pigment
0.02% Pigment Subscribe to view
Irganox 1010
6683-19-8
<0.01% Antioxidant Subscribe to view
Tris(2,4-di-tert-butylphenyl) phosphite
31570-04-4
<0.01% Antioxidant Subscribe to view
Name % Weight Part % Weight Whole Function GS Score Sources
Bentonite waterproofing layer
90.99% 90.99% Water resistance Subscribe to view
Bentonite
1302-78-9
(Nested within Bentonite waterproofing layer)
92.39% 84.07% Water resistance Subscribe to view
Quartz
14808-60-7
(Nested within Bentonite waterproofing layer)
5.43% 4.94% Impurity Subscribe to view
Cristobalite
14464-46-1
(Nested within Bentonite waterproofing layer)
1.09% 0.99% Impurity Subscribe to view
Tridymite
15468-32-3
(Nested within Bentonite waterproofing layer)
1.09% 0.99% Impurity Subscribe to view
Bentonite waterproofing geotextile
5.60% 5.60% Structure component Subscribe to view
Polypropylene
9003-07-0
(Nested within Bentonite waterproofing geotextile)
99.40% 5.57% Polymer Subscribe to view
Irganox 1010
6683-19-8
(Nested within Bentonite waterproofing geotextile)
0.60% 0.03% Antioxidant Subscribe to view
Polyethylene Film
3.41% 3.41% Water resistance Subscribe to view
Polyethylene
9002-88-4
(Nested within Polyethylene Film)
98.23% 3.35% Water resistance Subscribe to view
FLUX-CALCINED DIATOMACEOUS EARTH
68855-54-9
(Nested within Polyethylene Film)
1.03% 0.04% Anti-adhesive agent Subscribe to view
Pigment
(Nested within Polyethylene Film)
0.67% 0.02% Pigment Subscribe to view
Irganox 1010
6683-19-8
(Nested within Polyethylene Film)
0.05% <0.01% Antioxidant Subscribe to view
Tris(2,4-di-tert-butylphenyl) phosphite
31570-04-4
(Nested within Polyethylene Film)
0.01% <0.01% Antioxidant Subscribe to view

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Known or Potential Residuals

Known or Potential Residuals for Chemical
CASRN NAME GS SCORE TYPE FREQUENCY % Weight Chemical % Weight Product SOURCE
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Other Process Chemicals

CASRN NAME GS Score TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCES
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Sources

Sources for Common Product Data
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ABBTradeShow_Doc
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Barrier-Bac
BasementSystems_web
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Bentotex_PDS
BuildMeetsWorld_web
BuildSite_web
CCW_bentonite_web
CCW_MiraClay_SDS
CCW_MiraClay_TDS
Cetco_Swelltite_web
Cetco_Volclay_web
Cetco_Voltex_HPD
Cetco_Voltex_web
Cetco_VoltexDS_SDS
Cetco_VoltexDS_TDS
Chroma
ConcreteConstruction_web
Epro_BentoPro_SDS
Epro_BentoPro_TDS
Epro_BentoPro_web
Fina
Florprufe
GlobalSynthetics_PolymerBentonite
Griffolyn
HarriettPatent_1989
Kong_etal_2017
KR20090011441A
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Meadows_ClayTite_SDS
Meadows_ClayTite_web
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Pritchard_PlasticsAdditives
RichsonPatent_2006
Shamiri_EtAl_2014
Sika_BentoShield_PDS
Sika_BentoShield_SDS
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SikaProof_web
Stego
TakebePatent_2017
Tremco_Paraseal_PDS
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Tremco_ParasealLG_web
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Ullmann's 7th Ed
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Xtreme