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C25-strength-grade CMA concrete for masonry structure and preparation method of CMA concrete

A technology of strength grade and masonry structure, which is applied in the field of building materials, can solve problems such as damaging the ecological environment, polluting the environment, and damaging the soil, and achieves the effects of saving natural resources, reducing production costs, and low production costs

Pending Publication Date: 2020-08-25
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these large amounts of cow dung and CMA are not handled properly, it will pollute the environment, damage the soil, occupy farmland, and damage the local ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for CMA concrete whose masonry structure strength grade is C25, the specific steps are:

[0025] Step 1: Weigh the quality of each component. The CMA quality of each cubic meter of concrete is 11.75kg, the cement quality is 223.25kg, the fly ash quality is 95kg, the coarse sand quality is 432kg, the fine sand quality is 432kg, the crushed stone The mass is 1015kg, the mass of water is 165kg, and the mass of water reducer is 5.8kg;

[0026] Step 2: Pour the weighed CMA, cement, fly ash, coarse sand, fine sand and gravel into the mixer and stir for 70 seconds;

[0027] Step 3: Melt the solid water reducer in water and stir evenly, then add the water in which the solid water reducer has been melted into the blended material in the mixer, and then stir together for 5 minutes, and discharge the material to obtain the prepared concrete admixture.

Embodiment 2

[0029] A preparation method for CMA concrete whose masonry structure strength grade is C25, the specific steps are:

[0030] Step 1: Weigh the quality of each component. The CMA quality of each cubic meter of concrete is 11.75kg, the cement quality is 223.25kg, the fly ash quality is 95kg, the coarse sand quality is 432kg, the fine sand quality is 432kg, the crushed stone The mass is 1015kg, the mass of water is 165kg, and the mass of water reducer is 5.8kg;

[0031] Step 2: Pour the weighed CMA, cement, fly ash, coarse sand, fine sand and gravel into the mixer and stir for 75 seconds;

[0032] Step 3: Melt the solid water reducer in water and stir evenly, then add the water in which the solid water reducer has been melted into the blended material in the mixer, and then stir together for 4.5 minutes, discharge the material, and the prepared product is obtained concrete mix.

Embodiment 3

[0034] A preparation method for CMA concrete whose masonry structure strength grade is C25, the specific steps are:

[0035] Step 1: Weigh the quality of each component. The CMA quality of each cubic meter of concrete is 11.75kg, the cement quality is 223.25kg, the fly ash quality is 95kg, the coarse sand quality is 432kg, the fine sand quality is 432kg, the crushed stone The mass is 1015kg, the mass of water is 165kg, and the mass of water reducer is 5.8kg;

[0036] Step 2: Pour the weighed CMA, cement, fly ash, coarse sand, fine sand and gravel into the mixer and stir for 80 seconds;

[0037] Step 3: Melt the solid water reducer in water and stir evenly, then add the water in which the solid water reducer has been melted to the blended material in the mixer, and then stir together for 4 minutes, and discharge the material to obtain the prepared concrete admixture.

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Abstract

The invention discloses C25-strength-grade CMA concrete for a masonry structure and a preparation method of the C25-strength-grade CMA concrete. The concrete is composed of CMA, cement, fly ash, coarse sand, fine sand, gravels, water and a water reducing agent according to a mixing ratio of the (unit: kg / m <3>) CMA to the cement to the fly ash to the coarse sand to the fine sand to the gravels tothe water to the water reducing agent of 11.75: 223.25: 95: 432: 432: 1015: 165: 5.8. the cement, the fly ash, the coarse sand, the fine sand and the gravels which are weighed according to the above ratio are poured into a stirrer to be stirred, then the water in which the solid water reducing agent is melted is added into the stirred materials in the stirrer to be stirred together with the materials, and an obtained mixture is discharged, so that the prepared concrete mixture can be obtained. The concrete mixture is prepared into a test block; the test block is subjected to a mechanical test,and the 28-day compressive strength value of the test block is 25.37 MPa. The CMA concrete has the advantages of ecologically environmental friendliness, low production cost, thermal insulation and high firmness, and has great application value.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a CMA concrete with a strength grade of C25 for masonry structures and a preparation method thereof. Background technique [0002] In recent years, with the global energy crisis and environmental problems becoming more and more prominent, the industry of generating electricity and heat by burning biomass is developing rapidly. Biomass can be burned to generate heat or undergo thermochemical conversion technology to obtain gas, liquid and solid energy products, and the residual material is biomass ash. A large amount of biomass ash is produced every year in countries all over the world. It is estimated that the annual output of biomass ash in the world is close to that of fly ash, how to deal with and utilize these biomass ash is an urgent problem to be solved. At present, a large number of studies have shown that biomass ash can be used in the production of building ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/10
CPCC04B28/04C04B18/08C04B14/06C04B14/14C04B18/10C04B2103/302Y02W30/91
Inventor 陈新孝袁远龙万鹏
Owner XIJING UNIV