High-strength permeable concrete and method for preparing same

A permeable concrete, high-strength technology, applied in the field of road paving materials, can solve the problems of inability to meet the requirements of high-performance pavement laying, poor weather resistance of ordinary permeable concrete, hindering the application and development of permeable concrete, etc., and achieves excellent water permeability and frost resistance. , the effect of the best compressive strength

Inactive Publication Date: 2018-08-21
合肥慧林建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the strength of permeable concrete currently on the market is low, which cannot meet the requirements for laying high-performance pavements; the water permeability coefficient is low, generally lower than 10mm / s, which cannot meet the drainage requirements in rainy seasons, and it is easy to cause ground water phenomenon. ; In addition, ordinary permeable concrete has poor weather resistance, low freeze-thaw resistance, and is prone to freeze-thaw damage, which seriously hinders the application and development of permeable concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The high-strength permeable concrete of this implementation includes the following raw materials in parts by weight: 30 parts of coarse aggregate, 20 parts of sulphoaluminate cement, 5 parts of converter steel slag, 2 parts of calcined metabentonite powder, 4 parts of fly ash, silicon powder 1 part, 3 parts of iron tailings, 4 parts of ceramsite, 2 parts of coal gangue powder, 2 parts of reinforcing fiber, 2 parts of sodium silicate, 2 parts of bauxite, 0.5 part of binder, 0.3 part of water reducer, 1 part of glue, 0.1 part of dispersant.

[0027] Wherein, the coarse aggregate is composed of granite machine-made sand and river sand, and the weight ratio of granite machine-made sand and river sand is 2:1.

[0028] Wherein, the calcined metabentonite powder is obtained by crushing metabentonite, grinding it into powder, adding sodium sulfate and mixing evenly, putting it into a calciner, and calcining at 800°C for 5 hours to obtain calcined metabentonite powder, and sodiu...

Embodiment 2

[0037] The high-strength permeable concrete of this implementation includes the following raw materials in parts by weight: 40 parts of coarse aggregate, 30 parts of sulphoaluminate cement, 10 parts of converter steel slag, 4 parts of calcined metabentonite powder, 8 parts of fly ash, silicon powder 3 parts, 8 parts of iron tailings, 8 parts of ceramsite, 5 parts of coal gangue powder, 8 parts of reinforcing fiber, 5 parts of sodium silicate, 1.5 parts of 4 parts of bauxite, 0.8 parts of water reducing agent, 3 parts of gelling agent , 0.5 parts of dispersant.

[0038] Wherein, the coarse aggregate is composed of granite machine-made sand and river sand, and the weight ratio of granite machine-made sand and river sand is 4:1.

[0039] Wherein, the calcined metabentonite powder is obtained by crushing metabentonite, grinding it into powder, adding sodium sulfate and mixing evenly, putting it into a calciner, and calcining at 800°C for 5 hours to obtain calcined metabentonite po...

Embodiment 3

[0048] A kind of high-strength permeable concrete of this implementation comprises the following raw materials in parts by weight: 30-40 parts of coarse aggregate, 20-30 parts of sulphoaluminate cement, 5-10 parts of converter steel slag, 2-4 parts of calcined metabentonite powder Parts, 4-8 parts of fly ash, 1-3 parts of silicon powder, 3-8 parts of iron tailings, 4-8 parts of ceramsite, 2-5 parts of coal gangue powder, 2-8 parts of reinforced fiber, sodium silicate 2-5 parts, 2-4 parts of bauxite, 0.5-1.5 parts of binder, 0.3-0.8 parts of water reducer, 1-3 parts of gelling agent, and 0.1-0.5 parts of dispersant.

[0049] Preferably, raw materials including the following parts by weight: 35 parts of coarse aggregate, 25 parts of sulfoaluminate cement, 7.5 parts of converter steel slag, 3 parts of calcined metabentonite powder, 6 parts of fly ash, 2 parts of silicon powder, iron tail 5.5 parts of mineral sand, 6 parts of potassium feldspar powder, 3.5 parts of coal gangue pow...

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Abstract

The invention discloses high-strength permeable concrete and a method for preparing the same. The high-strength permeable concrete comprises, by weight, 30-40 parts of coarse aggregate, 20-30 parts ofsulphoaluminate cement, 5-10 parts of converter steel slag, 2-4 parts of calcined meta-bentonite powder, 4-8 parts of fly ash, 1-3 parts of silicon powder, 3-8 parts of iron tailings sand, 4-8 partsof ceramsite, 2-5 parts of coal gangue powder, 2-8 parts of reinforcing fibers, 2-5 parts of sodium silicate, 2-4 parts of bauxite, 0.5-1.5 parts of adhesion agents, 0.3-0.8 part of water reducing agents, 1-3 parts of gel and 0.1-0.5 part of dispersing agents. The high-strength permeable concrete and the method have the advantages that the high-strength permeable concrete is excellent in permeability performance, strength and frost resistance, and the method is simple, is easy to implement and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of road paving materials, in particular to a high-strength permeable concrete and a preparation method thereof. Background technique [0002] With the development of social economy and the continuous improvement of urbanization level, more and more urban surfaces are gradually covered by reinforced concrete buildings and impervious roads. Compared with natural soil, concrete pavement lacks the ability to breathe, absorb heat, and infiltrate rainwater, resulting in the inability of rainwater to penetrate into the ground, forming a large amount of water on the pavement and affecting the replenishment of urban groundwater, causing damage to the ecological environment. [0003] Permeable concrete is a new type of concrete born to make up for the impermeability of ordinary concrete. It is an environmentally friendly and ecological concrete material with water permeability and air permeability. It is mainly compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/08C04B111/20
CPCC04B28/065C04B2111/00284C04B2111/29C04B2201/52C04B14/048C04B14/068C04B18/142C04B14/104C04B18/08C04B18/146C04B18/12C04B18/027C04B14/386C04B16/0633C04B12/04C04B14/303C04B24/2676C04B2103/302C04B24/2623C04B24/00C04B24/38C04B24/128C04B24/383
Inventor 刘伍
Owner 合肥慧林建材有限公司
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