HEA anti-crack waterproofing agent

1. Product introduction
With the continuous improvement of engineering quality and the demand for deep concrete, technological progress, the development of pumping commercials, a new type, high -performance, and cracking waterproofing agent came into being. The HEA produced by our factory is a high-performance anti-crack waterproofing agent that compensates for shrinkage. In addition to low-alkali sulfoaluminate expansion agent, its components also have high-efficiency water reduction, impermeability, and retardation. These components are compounded on a high-efficiency compounding production line.
2. Technical characteristics
1. The calcium sulfoaluminate expansion agent component of this product has the effect of compensating concrete shrinkage and resisting cracking; the expansion rate of concrete cured in water for 14 days is limited to ≥0.015%, and generally The waterproofing agent can only resist penetration, but not cracking; 2. The highly efficient water-reducing component of this product can reduce the concrete-water-cement ratio, increase the workability and compactness of the concrete, further reduce the shrinkage of the concrete, and fill the concrete The internal porosity can improve the impermeability level and compressive strength;
3. This product varies with the construction season. The compound retarder and other components can reduce the heat of concrete hydration and avoid temperature difference cracks, thus Pour large volumes of concrete, construct concrete in summer, and use early-strength frost-resistant and crack-resistant concrete in winter.
4. When using shrinkage-compensating concrete of this product to build a reinforced concrete structure of more than 50 meters, the post-pouring tape can be left out and the post-pouring tape can be replaced by an expansion reinforcing tape to continuously pour concrete. It can solve the trouble caused by the cleaning and deburring of post-pouring joints during construction; it also solves the disadvantages that post-pouring joints must be poured after 60 days, the construction period is long, and there are many hidden dangers of leakage.
3. Technical parameters:
The dosage of HEA anti-cracking waterproofing agent is the internal extrusion method of replacing cement or cementitious materials with equal amounts. This product is a powder, and the recommended dosage is 6-8% of cementitious materials. . Regarding the technical key points of the expansion reinforcement belt, as early as 1993, the China Building Materials Research Institute filed a patent application for "Seamless Design and Construction Method of Ultra-Long Reinforced Concrete Structure" (Application Number: 93117132·6). The patent proposed: In underground engineering, For concrete that is more than 50mm long, expansion reinforcement strips can be used instead of post-pouring. The technical points are:
1. The width of the expansion reinforcement strip is 2 meters, and the recommended dosage of HEA anti-crack expansion waterproofing agent is (8-10%) glue. Concrete material;
2. Increase the horizontal steel bars by 10-15% in the expansion reinforcement belt;
3. Set up 5-10mm steel wire mesh on both sides of the expansion reinforcement belt to prevent concrete stones from flowing into the reinforcement belt;
4. The grade of expansion-reinforced concrete should be increased by 0.5 levels of strength; the entire construction process should be poured continuously.
5. The expansion reinforced belt needs special maintenance, moisturizing and curing for 14 days.
4. Packaging and storage:
This product is packed in a composite woven bag lined with plastic bags. Each bag weighs 50±0.5 kg and is stored in a dry and ventilated place. It is prohibited to get wet and caked. The shelf life is one year. </p