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Method for directly replacing fly ash in concrete with power plant ash residues

A power plant ash and concrete technology, applied in the field of building materials, can solve the problems of complex treatment process and high cost, and achieve the effect of reducing costs and simplifying the ash and slag treatment process.

Inactive Publication Date: 2017-12-15
云南鼎安翔农业产业发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves two technical problems. It proposes a method for directly using power plant ash to replace fly ash in concrete, aiming at problems such as complicated treatment process and high cost of ash replacement utilization caused by the use of fly ash in existing concrete. Simplify the ash treatment process to realize the local acquisition and recycling of power plant ash

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: The method of directly using power plant ash to replace fly ash in concrete is to first determine the basic mix ratio of a common C30 concrete, and then use the control variable method to use power plant ash , Through grinding and screening methods, ash with appropriate particle size can be obtained to directly replace fly ash in concrete, and then concrete can be obtained by conventional methods. The substitution amount of power plant ash slag to replace fly ash is 20%. For the grinding and screening of power plant ash, the power plant ash is first ground with a common grinder, and then sieved with a common sieve to obtain power plant ash with a particle size of 0.1 mm, which is used to replace fly ash in concrete.

Embodiment 2

[0010] Embodiment 2: The method of directly using power plant ash to replace fly ash in concrete is to first determine the basic mix ratio of a common C30 concrete, and then use the control variable method to use power plant ash , Through grinding and screening methods, ash with appropriate particle size can be obtained to directly replace fly ash in concrete, and then concrete can be obtained by conventional methods. The replacement amount of power plant ash slag to fly ash is 60%. For the grinding and screening of power plant ash, the power plant ash is firstly ground with an ordinary grinder, and then sieved with an ordinary screen to obtain power plant ash with a particle size of 0.5mm, which is used to replace fly ash in concrete.

Embodiment 3

[0011] Example 3: The method of directly using power plant ash to replace fly ash in concrete is to first determine the basic mix ratio of a common C30 concrete, and then use the control variable method to use power plant ash , Through grinding and screening methods, ash with appropriate particle size can be obtained to directly replace fly ash in concrete, and then concrete can be obtained by conventional methods. The substitution amount of power plant ash slag for fly ash is 100%. For the grinding and screening of power plant ash, the power plant ash is first ground with a common grinder, and then sieved with a common sieve to obtain power plant ash with a particle size of 0.8mm, which is used to replace fly ash in concrete.

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Abstract

The invention discloses a method for directly replacing fly ash in concrete with power plant ash residues and belongs to the technical field of building materials. The method comprises the following steps: firstly, determining a basic matching ratio of common C30 concrete and common C40 concrete; then utilizing a control variable method; under the condition that the other ratio is controlled, treating the power plant ash residues through a conventional grinding and screening method to obtain ash residues with the granularity of 0.1mm to 0.8mm; directly replacing the fly ash in the concrete with the ash residues and obtaining the concrete according to a conventional method. According to the method disclosed by the invention, the replacement amount of replacing the fly ash with the power plant ash residues is 20 percent to 100 percent. According to the method disclosed by the invention, the concrete is prepared by replacing the fly ash with the power plant ash residues with lower cost and relatively poor quality; the power plant ash residues only need to be simply finely ground and screened, so that the cost of the concrete is greatly reduced. The method has the advantages that an ash residue treatment process can be simplified and the power plant ash residues are obtained locally and circularly utilized and the like.

Description

technical field [0001] The invention relates to a method for directly using power plant ash to replace fly ash in concrete, belonging to the technical field of building materials. Background technique [0002] Concrete is the main material in engineering construction, and it is used in the construction of buildings, structures, roads, bridges, water conservancy facilities, municipal engineering and other projects. Ordinary C30 and C40 concrete are mainly composed of cement, fly ash, crushed stone, sand, admixtures and water. Due to the large demand for concrete, the amount of fly ash as one of the main concrete admixtures has also increased sharply, resulting in The shortage of supply has led to a sharp increase in the price of fly ash and the cost of concrete. [0003] In production, the cost of concrete increases due to the high cost of fly ash. Fly ash obtained from power plant ash is often used for concrete production, which can not only make use of power plant ash as w...

Claims

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Application Information

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IPC IPC(8): C04B18/10C04B28/02
CPCC04B18/10C04B28/02C04B2111/00017C04B2201/50C04B14/02C04B14/06C04B2103/0068Y02W30/91
Inventor 姜源张沛钦洪涛李梓齐徐向荣寸江涛
Owner 云南鼎安翔农业产业发展股份有限公司