Building sealants

Wolf, A.T. (Ed.), Durability of Building Sealants, State-of-the-Art Report 21 of RILEM Technical Committee 139-DBS, RILEM publication S.A.R.L., 1999. 

Robson, M., Melymuk, L., et al (2009) Continuing sources of PCBs the significance of building sealants (submitted). 

Polysulphide sealants were used in building structures for a long time before a standard specification was developed for such uses. ASA-A116.1 was the first specification for building sealants written by the Building Trade Specification Committee in 1956. Later, several specifications were designated by different societies for one-component and two-component systems. The specifications will be mentioned in the following. Apart from polysul-phides these specifications also refer to urethane and silicone sealants... 

DIN 52 452, part 1 1981 Testing of building sealants compatibility of sealants compatibility with other building materials. 

DIN 52 452, part 3 1978 Testing of building sealants for sealing and glazing compatibility of sealants with each other compatibility of hardened and fresh sealants. 

DIN 52 459 1981 Testing of building sealants determination of the water absorption of backfill material retentive capacity. 

Emulsions of polyvinyl acetate and polyalkyl acrylates have been used as tub caulking compositions, spackling compounds and as building sealants.22 Acrylic sealants which harden in the presence of powdered iron or copper meet Federal Specifications TT-S-00230C. 27 Liquid monomers, such as polyethylene glycol dimethacrylate and butyl alpha—cyanoacrylate have been used as room temperature curing sealants.22 22. 

Building Sealants - (Seals joints in exterior joints of curtain wall and other building exterior joints)... 

The properties of high performance building sealants have been studied as a function of four variables stress, strain, time and temperature, using tensile tests. By time-temperature superposition the number of variables can be reduced to three and the material properties characterized in a three-dimensional coordinate system. For sealants the projection of the failure points to this system in the log strain versus log time plane is sufficient for characterization. Further simplification can be made depending on the properties of the various types of sealant. 

Building Sealants Materials, Properties and Performance, STP 1069, edited by T.F. O Connor, 1991, 351 pp., ASTM International. 

INTERNATIONAL UNION OF TESTING AND RESEARCH LABORATORIES FOR MATERIALS AND STRUCTURES (RILEM) TC 139-DBS, Building Research Establishment, Garston Watford WD2 7JR UK, +44 (0)1923 894040. Durability of Building Sealants, in conjunction with Building Research Estabhshment. 

Uses Commercial building sealant for crack repair, cove bead expansion Joint sealant Features Nonsag... 

J. Beech and D. Aubrey, The influence of prunes on the pafonnance of building sealant joints. Proceedings Adhesives, Sealants and Erwapsulants Confererwe, London, November, 1986. 

A. T. Wolf, Ed., Durability of Building Sealants, Rilem Publications, 1999. 

J. C. Beech and C. Mansfield, The wate resistance of sealants for construction, in Building Sealants Properties and Performance, F. O Connor, Ed., Amaican Society for Testing and Materials, Philadelphia, 1990. 

Most of the polysulfide sales are in Europe, the United States, and Japan. Polysulfide sealants have 83% of the market share of insulating glass sealants in Europe, 35% in the United States, and a total of 60% worldwide. Polysulfides have only a modest share of the building sealant market. Polysulfides are virtually the only sealant specified for aircraft integral fuel tanks worldwide. In addition, they comprise about 90% of other aircraft sealant applications. The total volume used in the aircraft sealant market fluctuates with aircraft construction and repair. 

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