Water swelling compound

The water-swellable rubber waterstop is made of high-molecular inorganic water-absorbing expansion material and rubber, and is also a new type of building waterproof material. After water contact, it can absorb water and swell, the maximum expansion rate is 250%-550% (adjustable), and the gap between the new and old concrete is formed to form an impervious plastic colloid. In addition to the full performance of the waterstop, it also uses an internal waterproof line, which is made of special rubber for water expansion engineering. In this way, after the expansion rubber expands with water, the tightness of the waterstop and the structure is enhanced, so that the waterproof and water stopping effects are better.

Performance and application of water-swellable rubber waterstop:

In addition to the performance of the ordinary rubber waterstop, the main feature of the water-swellable rubber waterstop is that the inner waterproof line is made of special rubber with water expansion engineering. In this way, after the expansion rubber expands with water, the tightness of the waterstop and the structure is enhanced, so that the waterproof and water stopping effects are better. In the expansion of the waterproof line part of the rubber compound to implement the GB18173.3-2002 standard. The rest of the rubber has the same physical and mechanical properties as the ordinary rubber waterstop, and the GB18173.2-2000 standard is implemented. Rubber physical properties (execution standard GB/T18173.3-2002)

The water-swellable rubber waterstop increases the tightness of the waterstop and the structure after the water expands, thereby improving the waterproof performance of the waterstop. Therefore, the water-swellable rubber waterstop solves the problem of the surrounding leakage that has long been plagued by people. This product has been widely used in more than 360 key projects nationwide, and the use effect is good. This product is mainly used in the foundation engineering of concrete joints and concrete joints in the construction joints and deformation joints, such as underground facilities, tunnel culverts, water transfer aqueducts, water dams, liquid storage structures, etc. It needs to be used in combination with two-component polysulfide building waterproof sealant. It utilizes the characteristics of high elasticity and compressive deformation of rubber to produce elastic deformation under various loads, thereby effectively sealing and sealing, preventing water leakage, water seepage and shock absorption buffering of the building structure.

The water stop belt can be used in the concrete construction joint of the underground building to effectively and thoroughly solve the water leakage problem of the construction joint, and is an alternative product of the rubber waterstop. Widely used in basement, caverns, mines, bridges, tunnels, subways, sewage treatment plants, dams, storage tanks and other projects. In addition to the full performance of the rubber waterstop, this product also features an internal waterproof line and is made of special rubber for water expansion engineering. In this way, after the expansion rubber expands with water, the tightness of the waterstop and the structure is enhanced, so that the waterproof and water stopping effects are better. Therefore, it solves the problem of surrounding leakage that has long plagued people. This product has been widely used in more than 250 key projects nationwide, and the effect is good.

In 2006, the construction of domestic highways and high-rise buildings was endless, allowing water-expansion water-stopping belts to be widely used. It is based on its scientific water-stopping mechanism, low market price, and convenient installation and construction in various civil engineering and hydraulic engineering. Widely used. With the improvement of engineering waterproofing requirements, in order to ensure the leakage of civil engineering underground works and the quick and easy way to make up for leakage, our company has recently developed a water-swellable waterstop that can be pre-grouted.

Water-expanding rubber waterstop product use method:

The water-expanded rubber water-stopping belt expands the waterproof line part of the rubber compound to implement the GB18173.3-2002 standard. The rest of the rubber has the same physical and mechanical properties as the ordinary rubber waterstop, and the GB18173.2-2000 standard is implemented. Physical properties of water-expanded line rubber compound (execution standard GB/T18173.3-2002). After the concrete pouring is completed, the interface of the construction joint is hardened and dried, and the scum of the interface is removed. The viscosity of the water stop strip is applied to the interface of the construction joint along the direction of the construction joint, and the vertical construction joint is used. It can be fixed with steel nails to avoid displacement. When the joint is attached, the water stop strips may be laterally attached together and tied with a lead wire, and then the next section of the construction is carried out.

Main performance indicators of water-swellable rubber waterstop:

1. The maximum water swelling rate is 150%-300%.

2, high temperature 150 ° C does not flow

3, low temperature -25 ° C is not hard and brittle.

4, water pressure resistance 20 × 30mm up to 1.5mpa The above performance indicators have passed the national level test.

Installation and construction method of water-expansion waterstop:

1. The interface of the rubber waterstop is kept flat and dry. Before installation, the interface scum dust and debris are removed, and the waterstop is fixed to the determined installation site with steel nails or glue. However, the face of the grouting pipe must be placed on the original interface.

2. When the water stop belt is connected, the parallel lap joint method is adopted. The break point should not be left in the middle. The water stop belt at the joint is strengthened with steel nails, and the reserved grouting connection pipe on the water stop belt is placed in the other equal piece. Connect the water stop to the second pass.

3. Install a three-way one at a distance of about 30 meters according to the length of the installed waterstop. One end of the three-way straight line is inserted into the waterstop, one end is inserted into the grouting connection tube, and the other end of the T-shaped end should be Insert into the spare grouting to prepare the chemical slurry for water leakage when the gap leaks.

4. The grouting connecting pipe in the connected waterstop must be firmly bonded to the three-way coupling, and the grouting pipe of the installed waterstop must be completely unobstructed. The spare grouting pipe installed on the tee should be placed in the direction of the inner wall.

5. There is a bottle of grouting pipe adhesive in each box (used as a two-way and three-way connection on the grouting pipe and the water stop), and a spare grouting placed in the inner wall of a connecting tee. tube.

The water-expansion water-stopping belt adopts the world's advanced preparatory chemical grouting system concept, which combines the advantages of the slow-expanding water-expansion water-stopping water-stopping mechanism and the convenience of installation with the active remediation of preliminary grouting. Waterstop belt product, this product has low price and convenient installation. Under normal conditions, it relies on the expansion and water stop of the waterstop. When there is water leakage in the gap, it is not necessary to slot the hole in the structure to stop the leak. The chemical slurry is directly injected into the spare grouting pipe, and is uniformly filled into the leaking water portion, thereby conveniently and quickly blocking the leakage water, thereby saving the construction period, saving the cost, and achieving the purpose of permanently stopping the water. The grouting pipe type water-swellable waterstop is suitable for construction joints, post-casting belts, settlement joints and other building joints of high-grade underground waterproofing works. Waterstop with grouting pipe can increase the installation strength of the waterstop, make it easier to install, and control its expansion direction, the installation strength of the waterproof waterstop, make it easier to install, and control its expansion direction, waterproof waterstop Elongation in the length direction.

The water-expansion water-stopping zone of the grouting pipe adopts the world's advanced preparatory chemical grouting system concept, which combines the advantages of the water-stopping mechanism of the slow-expansion water-expansion water-stopping zone and the convenience of installation with the active remediation of the preliminary grouting. The new product developed has a scientific mechanism of stopping water, low price and convenient installation. Under normal conditions, it relies on the expansion and water stop of the waterstop. When there is water leakage in the gap, it is not necessary to drill holes in the surface of the structure to stop the leak. The chemical slurry can be directly injected into the spare grouting pipe and uniformly filled into the leaking water, so that the leakage water can be blocked conveniently and quickly, which saves the construction period, saves the cost, and achieves the purpose of permanently stopping the water. Suitable for construction joints, post-casting belts, settlement joints and other architectural joints for high-grade underground waterproofing works. Waterstop with grouting pipe can increase the installation strength of the waterstop, make it easier to install, and control its expansion direction, the installation strength of the waterproof waterstop, make it easier to install, and control its expansion direction, waterproof waterstop Elongation in the length direction.