High anti-permeability basalt fibre concrete and preparation method thereof

Abstract

The invention discloses high anti-permeability basalt fibre concrete. The high anti-permeability basalt fibre concrete is prepared from, by weight, 22 parts of cement, 35 parts of fine aggregate, 16 parts of coarse aggregate, 8 parts of water, 0.05 part of water reducing agent and 0.1 part of synergist. The concrete raw material further comprises doping material, and the doping material refers to short-cutting basalt fiber and fly ash, wherein the doping amount of short-cutting basalt fiber is 1.2 kg / m3, and the doping amount of fly ash is 30wt% of total weight of concrete gel. Through optimizing the mixture ratio of short-cutting basalt fiber and fly ash, the chloridion permeability resistance of concrete is effectively improved; the prepared concrete is applicable to the underground structure enriched in underground water, maritime work structures built in coastal regions, and other concrete projects; the economic loss is greatly reduced, and the concrete industry development is significantly promoted.

Description

technical field [0001] The invention belongs to the field of concrete preparation, and in particular relates to a high-impermeability basalt fiber concrete and a preparation method thereof. Background technique [0002] Concrete has become the most widely used building material due to its excellent performance and low cost. It is not only widely used in the above-ground space, but also more and more in the underground space, which has a certain impact on the durability of concrete. higher requirements. According to the research results of scholars at home and abroad, adding fibers to concrete can effectively improve the flexural strength, impact toughness and fatigue performance of concrete, and has a significant effect on improving the durability of concrete. Due to the disadvantages of low tensile strength and small tensile strain, it is limited in engineering application. However, for concrete projects such as underground structures rich in groundwater and marine struct...

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Problems solved by technology

However, for concrete projects such as underground structures rich in groundwater and marine structures built in coastal areas, the role of ions will have a great impact on the durability of concrete. Among them, chloride ions are the most harmful ions. Chloride ions It can invade concrete through capillary action, infiltration, diffusion and electrochemical migration, causing corrosion of steel bars, seriously endangering the safety and normal use of concrete structures, and causing huge economic losses

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