A kind of sea sand powder concrete

Abstract

The invention relates to sea sand powder concrete. The sea sand powder concrete comprises, by weight, 450-750 parts of cement, 250-450 parts of active mineral admixture, 50-150 parts of inert admixture, 850-1400 parts of sea sand, 24-32 parts of high efficiency slushing agents, 145-220 parts of seawater, 2-4 parts of organic fiber and 78-250 parts of copper-bearing steel fiber with the thickness ranging from 0.08 mm to 0.35 mm. According to the sea sand powder concrete, a compact stacking structure principle is adopted, the interior of the concrete is almost seamless in communication channel through optimization of particle size gradation, and a channel of internal ion medium migration is further eliminated through secondary hydration of the active mineral additive, so that the powder concrete obtained by stirring the raw materials through the seawater and the sea sand is ultra-high performance concrete with high durability, corrosion resistance and high mechanic property.

Description

field of invention

[0001] The invention relates to the field of concrete materials, in particular to sea sand powder concrete prepared by using sea water and sea sand. Background technique

[0002] With the rapid development of my country's economy, the demand for concrete in construction projects is increasing day by day. In the concrete manufacturing industry, a large amount of river sand is generally added to the concrete to obtain the desired strength of the final concrete structure. However, the mass production of concrete products has depleted limited river sand resources, which in turn endangers river flood control and urban water supply.

[0003] Compared with river sand, sea sand resources are more abundant. Using sea sand to prepare concrete is an ideal choice to solve the problem of overexploitation of river sand resources. However, because sea sand contains a certain amount of chloride ions, sulfate ion anions and metal cation ions, the steel structure in the ...

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