Product type water swelling water stop is also called PZ product type water swelling water stop. It is a new type of waterproof material which has the properties of general rubber products and self expansion when meeting water. The water stop and waterproof effect is more reliable than the general rubber water stop.

Features of the product type water swelling waterstop:

A. When the rubber meets water, it will produce 2-5 times less expansion deformation, and fill all the irregular surfaces, holes and gaps of the joint, and generate huge contact pressure to prevent leakage completely;

B. When the rigid joint or construction joint is displaced, resulting in the gap exceeding the elastic range of the material, the ordinary rubber water stop material will lose its water stop function, and the product can also stop water by absorbing water and expanding.

C. Using water swellable rubber as plugging and sealing material can not only save energy, but also eliminate the characteristics of elastic fatigue caused by excessive compression of general elastic materials, so that the waterproof effect is more reliable, and the water resistance, chemical resistance and aging resistance are good.

D. It is mainly used for waterproofing of existing joints with shield construction method, deformation joints of buildings, Waterstops and metal components for construction joints and prefabricated concrete members.

Physical properties of product type expanded rubber (BF) GB / t18173.3-2002

Item index pz-150pz-250pz-400pz-6001 hardness (Shore A) / degree 50-6042 ± 745 ± 748 ± 72 tensile strength / MPa 2.5-3.97 ≥ 3.533 elongation at break /% ≥ 4503504 volume expansion ratio /% ≥ 1502504006005 repeated immersion test tensile strength / MPa ≥ 32 elongation at break /% ≥ 350250 volume expansion ratio /%) Note: 1. The hardness is recommended; 2. The slicing test of the finished product should reach 80% of the standard; 3. The tensile strength index of the joint should not be less than 50%

There are dozens of sections of waterstop, such as 15 × 20, 20 × 20, 20 × 30, 30 × 30, 30 × 40, 20 × 50, 30 × 50, 50 × 50 and so on. Products with different specifications and length and expansion ratio can be manufactured according to engineering design requirements.