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The role of sodium tripolyphosphate in concrete
Views: 0 Author: Site Editor Publish Time: 2023-06-30 Origin: Site
First, it is important for us to understand that the strength and durability of concrete is related to the amount of cement used and the water-cement ratio. The more cement used and the smaller the water-cement ratio, the better the strength and durability of the concrete. However, too much cement increases the cost of the concrete and can make the concrete difficult to construct.
Therefore, in order to reduce costs and improve construction efficiency while ensuring the strength and durability of concrete, it is necessary to add a water reducing agent. Sodium tripolyphosphate is one of the commonly used water reducing agents for concrete.
Concrete admixture formula:
1) Composite high-efficiency concrete admixture using polycarboxylic acid series condensate as anti-segregation component, naphthalene-based high-efficiency water reducer as base material, and sodium tripolyphosphate as plastic-preserving component.
2) The mixing amount of polycarboxylic acid series condensate is 4% to 7% of that of naphthalene series superplasticizer;
3) The doping amount of sodium tripolyphosphate is 0.4% to 0.8% of that of naphthalene-based superplasticizer;
4) The naphthalene-based high-efficiency water reducer is compounded by two kinds of high-efficiency water-reducers of naphthalene sulfonate formaldehyde condensate with different condensation degrees and the water-reducing rate is greater than 25%. The ratio of the two high-efficiency water-reducers is 1:1.
Concrete is a material commonly used in construction engineering, and its strength and durability directly affect the quality and lifespan of buildings. As a water reducer, sodium tripolyphosphate can improve the performance of concrete, increase the strength and durability of concrete. In the process of concrete production, it is necessary to select the appropriate water reducing agent according to the specific situation in order to achieve the best effect.
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