Dry-hard concrete applied to parking apron

A technology for dry-hard concrete and parking apron, applied in the field of concrete, can solve the problems of poor fluidity of dry-hard concrete, speed up construction, increase physical labor, etc., and achieve the effects of facilitating construction treatment, reducing erosion, and improving utilization rate.

Inactive Publication Date: 2018-11-27
北京建工新型建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In particular, the apron has strict requirements on the quality of dry hard concrete, which needs to have high strength and durability, but the fluidity of dry hard concrete is poor, which affects the quality of concrete parts during later transportation or construction. Difficult to form compactly and has high requirements for technology, which is not conducive to speeding up the construction speed, complicated operation, and increased physical labor

Method used

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  • Dry-hard concrete applied to parking apron
  • Dry-hard concrete applied to parking apron
  • Dry-hard concrete applied to parking apron

Examples

Experimental program
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Effect test

preparation example 1

[0036] (1) by comprising the compound of 4-butylaminobenzoic acid nine polyethylene glycol monomethyl ether ester-maleic anhydride-lignosulfonate calcium polymer graft copolymer 15Kg, polyethylene glycol 15Kg and acrylic acid 2.5Kg React in the presence of water at 80°C for 5 hours and dry to obtain mixture A;

[0037] (2) React the mixture comprising the mixture A of step (1), 2.5Kg of acrylic acid and 15Kg of water glass in the presence of water at 80°C for 4 hours, and cool to 40°C to obtain mixture B;

preparation example 2

[0039] (1) by comprising the compound of 4-butylaminobenzoic acid nine polyethylene glycol monomethyl ether ester-maleic anhydride-calcium lignosulfonate polymer graft copolymer 18Kg, Polyethylene Glycol 8Kg and acrylic acid 3.5Kg React in the presence of water at 90°C for 6 hours and dry to obtain mixture A;

[0040] (2) React the mixture comprising the mixture A of step (1), 3.5Kg of acrylic acid and 18Kg of water glass in the presence of water at 85°C for 5 hours, and cool down to 45°C to obtain mixture B;

preparation example 3

[0042] (1) by the mixture comprising 4-butylaminobenzoic acid nine polyethylene glycol monomethyl ether ester-maleic anhydride-lignosulfonate calcium polymer graft copolymer 20Kg, Polyethylene Glycol 10Kg and acrylic acid 5Kg React in the presence of water for 7 hours at 99°C and dry to obtain mixture A;

[0043] (2) React the mixture comprising the mixture A of step (1), 3.5Kg of acrylic acid and 18Kg of water glass in the presence of water at 90°C for 6 hours, and cool down to 50°C to obtain mixture B;

[0044] (3) Add 3Kg of defoamer to the mixture B of step (2), and use sodium bicarbonate to adjust the pH value to 9.0 to obtain a water reducer; Preparation Example 1 of Plasticizer

[0045] Dimethylbenzenesulfonic acid polymerized formaldehyde sodium salt 1Kg, sodium lauryl sulfate 15Kg, water reducing agent 3Kg provided in Example 1 of water reducing agent preparation, hydroxymethyl cellulose 5Kg, attapulgite 3Kg, methyl acrylate 1Kg and 10Kg of water are mixed and stirre...

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Abstract

The invention discloses dry-hard concrete applied to a parking apron, and belongs to the technical field of concrete. The dry-hard concrete is prepared from 375-429 parts of cement, 857-985 parts of sand, 1,200-1,478 parts of broken stone, 57-69 parts of activated fly ash, 85-110 parts of mineral powder, 5-10 parts of plasticizing agent, 2-6 parts of expanding agent and 120-163 parts of water. Thedry-hard concrete has the advantages of being good in liquidity, high in compactibility, high in strength and good in durability.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a dry hard concrete applied to an apron. Background technique [0002] Concrete, referred to as concrete, is a collective name for engineering composite materials that are aggregated into a whole by cementitious materials. It uses cement as cementitious material, sand and stone as aggregates, and can be mixed with water and admixtures in a certain proportion. It is obtained by mixing and is widely used in civil engineering. [0003] With the development of science and technology and the diversification of highway structures, more and more building materials have been widely used, and various types of concrete emerge in endlessly, among which the types of dry hard concrete products are becoming more and more abundant. [0004] The concrete whose slump is less than 10mm and the Vibe consistency value is in the range of 10-30s is called dry hard concrete. Dry hard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01F3/00
CPCC04B28/04C04B2111/20C04B2201/50E01F3/00C04B14/06C04B14/02C04B18/08C04B18/141C04B2103/0068C04B2103/40C04B2103/30
Inventor 张莉李海彬刘永志张弯张杰
Owner 北京建工新型建材有限责任公司
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