Concrete siliceous density agent (hereinafter referred to as density agent) is a low-alkali, low-dosage, high-concentration compound composed of silicone hydrophobic agent and penetrating crystallization shrinkage-reducing surfactant. A new green additive with high performance. This product is mixed into ordinary concrete in an appropriate amount. After mixing with water, it will form hydrophobic gels and crystals, which will fill the capillary pores of the concrete and block the water seepage channels. Improves the density of concrete and prevents or reduces shrinkage cracking of concrete. And improve the anti-seepage ability of the concrete structure.
Product Features
1. The shrinkage rate of concrete of different grades is greatly reduced after being mixed with this product. Small, the anti-permeability index can be increased by 2 to 4 times, reaching P8-P30.
2. After incorporating this product, it can significantly improve the frost resistance of concrete. The dynamic elastic modulus after 200 freeze-thaw cycles is greater than 70%.
3. After incorporating this product, it can significantly improve the resistance of concrete to the intrusion and erosion of harmful ions (chloride ions, sulfate ions, etc.).
Concrete mechanical properties
item | Indicators | item | Indicators | ||
Pure paste stability | Qualified | Bleeding rate ratio, % | ≤50 | ||
Condensation time difference, min | Initial setting | ≥-90 | Penetration height ratio, % | ≤30 | |
Compressive strength ratio, % | 3d | ≥100 | 48h water absorption ratio, % | ≤65 | |
7d | ≥100 | Shrinkage rate Ratio | 3d | ≤95 | |
28d | ≥100 | 28d | ≤105 | ||
Corrosion effect on steel bars | None | ||||
The dosage is 0.21-0.22% of the cementing material, and the ordinary type dosage is 2-5% of the cementing material
Scope of application: Used in silos, reservoirs, water corridors, tunnels, dams, subways, underwater structures and other projects that have high anti-cracking and anti-seepage requirements and a certain hydrostatic pressure, so that they can reach the structure Self-waterproofing, foundation engineering, surface engineering, repair engineering, post-cast concrete, roads, bridges, airport pavements, parking lots and large-volume concrete projects requiring expansion joints.
Specially configured densifiers include:
JH siliceous densifier (powder, liquid), which mainly uses sodium methyl silica, trimethylsilane A new type of waterproof and impermeable material made of polymer materials such as ethoxy silicon and organic silicone water-soluble resin, which are compounded through dispersion, emulsification and other processes.
It has more obvious anti-permeability, anti-cracking, moisture-proof, and waterproof effects. It also overcomes the shortcomings of the older generation of solid powders that are easy to absorb moisture and agglomerate. It is widely used in underground construction: subways, parking lots, tunnels, mines, and civil air defense Engineering, machine pits, cave storage, construction pools, swimming pools, water towers, storage tanks, oil tanks, large containers, toilets, etc.
The dosage is cement 3-5% of weight.</p
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