1. Product introduction
Concrete siliceous density agent is mixed into ordinary concrete in an appropriate amount and mixed with water. Hydrophobic gels and crystals are generated, filling the capillary pores of concrete, blocking water seepage channels, improving the density of concrete, preventing or reducing shrinkage and cracking of concrete, thereby improving the anti-seepage capability of the concrete structure. The concrete siliceous density agent makes the concrete slightly expand and dense, and has the functions of moisture-proof, waterproof, anti-seepage and anti-cracking. The anti-permeability grade of concrete mixed with this product can reach P20, and the frost resistance of concrete mixed with this product can reach 300 times. This product is suitable for concrete grades C20~C60. It can be adapted to the construction of concrete moisture-proof, waterproof and anti-seepage projects with structures over 150m without leaving any expansion joints.
2. Scope of application
1. It has high requirements for anti-cracking and anti-seepage and has static water Pressure projects, such as: concrete silica density agent for silos, reservoirs, water corridors, tunnels, dams, subways, underwater structures, etc.
2. Foundation projects, surface projects, repair projects, post-cast concrete, roads, bridges, airport aprons, parking lots and large buildings requiring expansion joints Volumetric concrete project.
3. Anti-seepage and waterproof concrete that is non-shrinking, crack-resistant and dense is required, such as: most civil engineering projects (including construction, municipal administration, water conservancy, bridges, electricity, roads, airports, seaports), etc., especially for cast-in-situ raft foundations of high-rise buildings, large water field projects, water diversion, water supply and drainage, and ground projects.
4. For concrete projects in cold areas that require resistance to freeze-thaw cycles, it has frost resistance.
3. Product performance
1. Water impermeability: This product is used to configure waterproof When dense concrete or mortar is used to prevent seepage and cracking, the impermeability level can be increased by more than 3 times.
2. Compactness: Adding this product can reduce the porosity inside concrete by more than 50%, which can effectively reduce the number of capillary pores and macropores, thus To achieve the purpose of waterproofing.
3. Water reduction rate: changes with the mixing amount. When 5% is mixed, the water can be reduced by about 18% in the mortar and in the concrete. Reduce water content by 20%.
4. Strength: Significantly increase the strength of concrete in a short period of time, reaching 70% in 3 days, 28-day strength in 7 days, and 20% in 28 days. %about.
5. Save cement: 5% of this product can be used to replace cement, while the compressive strength and impermeability grade remain unchanged.
4. Usage
1. When the normal temperature is not lower than 0 degrees Celsius, you can Mix this product directly into concrete or mortar. In order to achieve uniformity, the mixing time needs to be extended by 1 minute.
2. The dosage is 3-5% of the cement weight.
5. Precautions
1. Use strictly according to the prescribed dosage and strictly control the water ash The ratio should not be increased or decreased arbitrarily. When used in mortar, mix dry for 2 minutes first, then add water and stir.
2. When using this product, it is necessary to strengthen early curing to prevent concrete or mortar from losing water, which will affect cement hydration and slow down the later strength growth.
3. This product is used in Portland cement, ordinary Portland cement and (GB1344-92) pozzolan cement that comply with national standards (GB175-92) , fly ash cement mixed with concrete or mortar, other varieties should pass the test before use.
4. This product should be stored under dry conditions. If it becomes damp and agglomerates, it will deliquesce, but it will not lose its effectiveness and can still be used after drying and crushing.
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