Extension Tests on Pvc Contraction Joint Forming Waterstops

摘要

Laboratory extension tests on short sections of polyvinyl chloride plastic contraction joint forming waterstops are described. Tests indicate that most strips will serve satisfactorily if the joint does not open more than 3/8 inch, most strips could be extended over 2 inches, the size of the hole in the center bulb does not greatly affect performance, fins on the horizontal flange restrict deformation to that portion of the flange between fins, strips should restrain slab movement, and further investigation of stress relaxation and the effect of cycling should be done. (Author)