Blockage-resistant pervious concrete as well as preparation method and application thereof

Abstract

The invention provides blockage-resistant pervious concrete. The water glue ratio of the blockage-resistant pervious concrete is 0.28-0.38. The blockage-resistant pervious concrete is prepared from the following components in parts by weight: 22-30 parts of silicate cement, 34-42 parts of macadam, 24-32 parts of quartz sand, 2-5 parts of pulverized coal ash, 3-6 parts of micro powder of ore residues, 0.3-0.5 part of modified polypropylene fibers, 1-3 parts of redispersible latex powder, 1-2 parts of a water reducing agent and water. According to the blockage-resistant pervious concrete disclosed by the invention, the pervious principle of conventional concrete with macropore is changed, the perviousness of the concrete is improved by using functional material components namely the modified polypropylene fibers, and the macadam and the quartz sand are matched for use, so that the small pore rate of the concrete is guaranteed, the modified polypropylene fibers and the small pores of the concrete are utilized for perviousness, and massive suspending particles or organic fine particles are prevented from entering large pores to block the pores along with water currents; and the modified polypropylene fibers are used and are effectively combined with other components in the pervious concrete, so that the perviousness of the pervious concrete is further improved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an anti-blocking permeable concrete and its preparation method and application. Background technique [0002] In the process of urbanization, the surface of the city is gradually hardened and covered by water-blocking materials such as buildings and concrete. These impermeable pavements have brought great negative impacts on the ecological environment of the city, such as slippery in rainy days, glare, and urban floods. and the urban heat island effect. [0003] Permeable concrete is an ecological and environmentally friendly concrete. It is a concrete with continuous pores made by a special process. It has a certain strength and a certain degree of air and water permeability. Permeable concrete pavement can alleviate urban rain and flood, reduce slippage and glare in rainy days, improve the safety and comfort of driving, absorb sound and reduce noise, and alleviate the urban h...

AI Technical Summary

Problems solved by technology

[0004] However, the general permeable concrete pavement or permeable brick has relatively large porosity due to the requirement of water permeability. After the permeable concrete pavement is built, a large amount of suspended particles (such as mud sand, debris, etc.) The fine particles will continue to enter the pores of the permeable concrete with the water flow, causing the clogging of the pores and reducing the permeability of the pavement.

It not only causes economic waste, but also increases the possibility of urban flood disasters

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