1. Product Introduction
Pile foundation cement grouting agent is a multi-functional concrete additive specially used for pile foundation engineering. This product has the function of reducing water expansion, which can greatly increase the bearing capacity of a single pile and reduce settlement. It is Ideal for pile foundation projects.
2. Scope of application
This product can be mixed with various cements such as ordinary cement and slag cement. It is suitable for various types of cast-in-place piles, powder spray piles, deep mixing piles and other projects.
3. Technical performance
1. Good water reduction and enhancement effect: 12% of this product mixed with water can reduce water by more than 20%, and the compressive strength can be increased by more than 30% in 28 days.
2. Good slump retention performance: The concrete mixed with this product has basically no slump loss for 15 hours, which can meet the requirements of ready-mixed concrete.
3. Significantly improve the workability, pumpability and pourability of concrete, reduce bleeding and stratification, and also reduce the "spring" and "sand lines" of engineering piles, thereby improving the quality of the piles. body quality.
4. The concrete mixed with this product has a certain retarding effect, which effectively avoids the occurrence of engineering accidents such as lack of compactness and broken piles due to accelerated hardening of concrete due to hydration.
5. The concrete mixed with this product has a certain expansion value. When cured in water for 28 days, the free expansion rate reaches 7.0-10.4×10-4.
6. It can increase the vertical bearing capacity of a single pile by more than 15% and reduce the settlement by about 20%.
IV. Homogeneity index
Inspection items Appearance fineness Moisture content pH value Chloride ion content Total alkali content (Na2O+0.658K2O)
Enterprise standard pink powder 0.315㎜ sieve residue ≤ 8% ≤5% 7±1 ≤0.05% ≤0.4%
Remarks No rusting effect on steel bars
5. Usage methods and precautions
1. Dosage: Recommended dosage 8-10% ( Measured based on the amount of cementitious materials)
2. It should be added to the mixer together with cement, sand and stone, and must not be dissolved in advance.
3. The stirring time should be appropriately extended.
4. There is no need to add other water reducing agents or pumping agents.
6. Packaging and Storage
This product is packed in lined plastic bags, 25kg per bag. It should be stored in a dry and cool place and be protected from moisture. Shelf life is one year. </p
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