1. Product introduction
With market needs, technological progress, and the development of pumping commercial models, a new type, high -performance, cracking waterproofing agent emerges. 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 achieving crack resistance; the expansion rate of concrete cured in water for 14 days is limited to ≥0.015 %, while general waterproofing agents can only resist penetration, but not cracking;
2. The high-efficiency water-reducing component of this product can reduce the concrete-water-glue ratio, increase the workability and compactness of concrete, Further reduce the shrinkage rate of concrete, fill the internal porosity of concrete, and achieve the effect of improving the impermeability level and compressive strength;
3. This product varies with the construction season, and the compound retarder and other components will It can reduce the hydration heat of concrete and avoid temperature difference cracks, thereby pouring large-volume concrete, constructing concrete in summer, and providing early-strength frost-resistant and crack-resistant concrete in winter.
4. When using this product's shrinkage-compensating concrete 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, and the concrete can be poured continuously. It can solve the trouble caused by the cleaning and deburring of the post-pouring joints during construction; it also solves the disadvantages of the post-pouring joints having to be poured after 60 days, a long construction period, and many hidden dangers of leakage.
3. Technical parameters:
The dosage of HEA anti-crack 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 % cementitious material. 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%) cementitious material;
2. Add 10-15% horizontal steel bars to the expansion reinforcement belt;
3. Erect 5-10mm steel mesh on both sides of the expansion reinforcement belt. , to prevent concrete stones from flowing into the reinforcement belt;
4. The concrete grade of the expansion reinforcement belt should be increased by 0.5 levels of strength; the entire construction process is 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
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