ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
Pagination or Media Count:
Nonmetallic waterstops having suitable properties for use in joints in hydraulic structures of concrete have been made successfully from natural rubber, synthetic rubber, and polyvinyl chloride. To perform satisfactorily, a waterstop must have sufficient strength and extensibility to avoid being ruptured by joint movement, and it must maintain strength and extensibility over the temperature range and in spite of chemical attack from the environment of service. It must also have suitable dimensions and configuration and be installed so as to avoid waterflow around the embedded ends. Field and laboratory studies have led to the conclusion that suitable waterstop materials should have a tensile strength of at least 1400 psi plastic, 2000 psi rubber , the ability to elongate 280 percent plastic or 360 percent rubber, and to have various levels of maintenance of relevant properties after various chemical and thermal exposures.
- Civil Engineering
- Construction Equipment, Materials and Supplies