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ASTM Selected Technical Papers
Durability of Building and Construction Sealants and Adhesives
By
A Wolf
A Wolf
1
Dow Corning GmbH.
?
Wiesbaden
Germany
Symposium Chairman and Editor
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ISBN-10:
0-8031-3480-0
ISBN:
978-0-8031-3480-5
No. of Pages:
419
Publisher:
ASTM International
Publication date:
2004

Silicone sealants are widely used in building construction. Regardless whether the sealant is used in structural sealant glazing or in non-structural applications (such as weather-sealing joints), good adhesion of the silicone sealant to the building substrate is a prerequisite for good performance and long service-life (durability). Although silicone sealants typically show excellent unprimed adhesion to most building substrates, poor results have been reported occasionally, especially when sufficient care is not taken in substrate preparation. However, very occasionally, poor adhesion is observed, despite proper cleaning and priming of the substrate. Based on several years of work experience gained from laboratory testing and results obtained on thousands of substrate samples used for job site qualifications as well as from field performance inspections, the authors summarize important factors, which affect silicone sealant adhesion. These factors include sealant formulation, surface characteristics of the substrate, the effectiveness of the cleaner in removing surface contamination, et cetera. The authors' intention with this paper is to discuss each of these effects separately and to provide the sealant manufacturer and end user with useful information on how to avoid adhesion problems.

1.
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,
P.
,
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,
J.
, and
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,
A. T.
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Method of Predicting the Adhesion of Silicone Sealant to Anodized Aluminum
,”
Science and Technology of Building Seals, Sealants, Glazing, and Waterproofing: Third Volume
, ASTM STP 1254,
ASTM International
,
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J. C.
, Ed.,
West Conshohocken, PA
,
1994
, pp. 95–106.
2.
Gutowski
,
W. S.
,
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,
L.
, and
Cerra
,
A.
, “
New Tests for Adhesion of Silicone Sealants
,”
Science and Technology of Building Seals, Sealants, Glazing, and Waterproofing: Second Volume
, ASTM STP 1200,
ASTM International
,
Klosowski
J. M.
, Ed.,
West Conshohocken, PA
,
1992
, pp. 87–104.
3.
Pagliuca
,
A.
, and
Hutchinson
,
A. R.
, “
Adhesion Properties of Sealants in Resealed Joints
,”
Science and Technology of Building Seals, Sealants, Glazing, and Waterproofing: Sixth Volume
, ASTM STP 1286,
Myers
J. C.
, Ed.,
ASTM International
,
West Conshohocken, PA
,
1996
, pp. 109–128.
4.
Gutowski
,
W. S.
,
Russell
,
L.
, and
Cerra
,
A.
, “
Adhesion of Silicone Sealants to Organic-Coated Aluminum
,”
Science and Technology of Building Seals, Sealants, Glazing, and Waterproofing: Second Volume
, ASTM STP 1200,
Klosowski
J. M.
, Ed.,
ASTM International
,
West Conshohocken, PA
,
1992
, pp. 144–159.
5.
Shephard
,
N.E.
, and
Wightman
,
J.P.
, “
A Simple Devise for Measuring Adhesive Failure in Sealant Joints
,”
Science and Technology of Building Seals, Sealants, Glazing, and Waterproofing: Seventh Volume
, ASTM STP 1334,
Klosowski
J. M.
, Ed.,
ASTM International
,
West Conshohocken, PA
,
1998
, pp. 107–114.
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