Concrete and preparation process thereof

Abstract

The invention discloses concrete and a preparation process thereof. The key point of the technical scheme of the concrete is characterized in that the concrete comprises a base layer and a surface layer protection layer arranged on the base layer; and the base layer is prepared from the following components, in parts by weight: 140-160 parts of water, 360-390 parts of cement, 20-30 parts of fly ash, 1,600-1,900 parts of gravel, 5-10 parts of carclazyte, 1-2 parts of polyacrylonitrile-based carbon fibers and 6-12 parts of an additive special for the pervious concrete. The pervious concrete comprises the base layer and the surface layer protection layer; the base layer has good structural strength; and by arranging the surface layer protection layer, on one hand, the abrasion resistant property of the material can be strengthened, and on the other hand, entering of partial impurities into the base layer can be prevented, so that the phenomenon of cleaning difficulty caused by plugging ofpores of the base layer is reduced. The fly ash added in the base layer can improve the structural strength of the base layer; by adding the carclazyte, on one hand, part of substances can be decomposed, and on the other hand, the strength of the base layer is improved; and the polyacrylonitrile-based carbon fibers can also improve the structural strength of the base layer.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a concrete and a preparation process thereof. Background technique [0002] With the advancement of urbanization, large areas of impermeable materials are used in urban construction, causing serious harm to the living environment, such as heat island effect, urban waterlogging, shortage of groundwater resources, land subsidence and surface runoff pollution. [0003] Permeable concrete is an ecological and environmentally friendly concrete, which can effectively alleviate the adverse impact of traditional impermeable pavement on the environment. Permeable concrete belongs to the skeletal pore structure, relying on the internal friction resistance of aggregates and the cohesive force of cementitious materials to form a certain strength. Since there is no fine aggregate to fill the pores between coarse aggregates, more pores are formed. Good water permeability. [0004] However, because pe...

AI Technical Summary

Problems solved by technology

[0004] However, because pervious concrete has a porous structure, the structural strength of pervious concrete is relatively low, and it can only be used on light-loaded pavement, and its use is limited.