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Cement-free slag powder concrete

A technology for concrete and slag powder, applied in cement-free slag powder concrete, special concrete field, can solve the problems of environmental pollution, energy loss of cement, consumption of cement, etc., to reduce production costs, save cement and energy, and utilize waste resources. Effect

Inactive Publication Date: 2010-05-26
GUANGDONG FOUND ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary concrete consumes a lot of cement, and the production of cement consumes a lot of energy, releases a lot of greenhouse gases, and causes huge environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cement-free slag powder concrete mix ratio: 100kg slag powder, 220kg fly ash, 980kg medium sand, 860kg stone, and 215kg water. Concrete prepared according to this mix ratio has been tested in the underground shield enclosure structure of a key project in Guangzhou, with a total production of 3600m 3 . The concrete has good workability, the slump reaches 190mm, and the 28-day compressive strength reaches 12MPa.

Embodiment 2

[0022] Cement-free slag powder concrete mix: 300kg slag powder, 100kg fly ash, 780kg medium sand, 1025kg stone, 175kg water, and 6.0kg superplasticizer. The slump reaches 150mm, the standard curing is 28 days, and the compressive strength reaches 25MPa.

Embodiment 3

[0024] Cement-free slag powder concrete mix ratio: 300kg slag powder, 200kg fly ash, 700kg medium sand, 1015kg stone port, 160kg water, 7.0kg water reducing agent, and 3.1kg alkaline activator. The slump reaches 180mm, the standard curing is 28 days, and the compressive strength reaches 33MPa.

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Abstract

The invention provides a cement-free slag powder concrete which is characterized in that proportioning of main raw materials in per cubic meter concrete is as follows: 0kg of cement, 100-400kg of slag powder, 0-250kg of fly ash and 140-220kg of water. As in the invention, no cement is adopted in the concrete and quantities of slag powder and fly ash are doped, the activity effect of the slag powder and fly ash is fully utilized, thus ensuring the working performance and quality thereof, efficiently utilizing waste resource, saving cement and energy, reducing production cost and mitigating environment pollution. The invention has wide application range, can be applied to various project parts, is especially suitable for temporary structure and underground structure projects, and has broad market prospect.

Description

technical field [0001] The invention relates to a special concrete, in particular to a cementless slag powder concrete, which belongs to the technical field of building materials. Background technique [0002] With the continuous development of social and economic construction, the demand for concrete is increasing. Ordinary concrete is prepared by mixing cement, admixtures, sand and admixtures. Ordinary concrete consumes a lot of cement, and the production of cement consumes a lot of energy, releases a lot of greenhouse gases, and causes huge environmental pollution. Modern industrial production produces a large amount of industrial waste residues such as slag powder and fly ash, and these admixtures have good potential activity. Therefore, how to make good use of these resources and reduce production costs is imminent. Contents of the invention [0003] The purpose of the present invention is to provide a cementless slag powder concrete. Its characteristic is that no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08
Inventor 詹国良邓旭华陈洪毅官雄忠
Owner GUANGDONG FOUND ENG GRP CO LTD
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