Porous concrete aggregate design method based on working performance

A technology of porous concrete and work performance, applied in computer-aided design, calculation, special data processing applications, etc., can solve the problems of lack of reliable calculation to ensure porosity and pore size distribution, difficult to guarantee the work performance of porous concrete, etc., to reduce the number of tests. Quantity, the effect of improving construction performance

Inactive Publication Date: 2019-07-09
科利尔环保科技有限责任公司
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Problems solved by technology

[0003] In the existing porous concrete mix ratio design, the aggregate particle size is mainly determined directly based on engineering experience and the principle of nearby availability, and there is a lack of reliable calculations to ensure the required porosity and pore size distribution, so the workability of the resulting porous concrete is difficult to guarantee

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  • Porous concrete aggregate design method based on working performance

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Embodiment 1

[0035] The design method of porous concrete aggregate based on work performance includes the following steps:

[0036] 1. The target working performance of the designed porous concrete is: density 1950kg / m 3 , porosity 22%, U-shaped slump angle 25°. Determine the volume of each component according to the relationship between the volume of pores, slurry and aggregate and the working performance,

[0037] V=0.2, P=0.275, A=0.525.

[0038] 2. Adjust the volume of each component.

[0039] V'+P'=V+P-5%=0.425

[0040] A'=A+5%=0.575

[0041]

[0042] V'=V+P-5%-P'=0.124

[0043] 3. Target porosity e for aggregate design A =V'+P'=0.425

[0044] According to the relationship between the porosity of the aggregate and the percentage of aggregates with four particle sizes:

[0045] e A =40.1A+42.6B+43.8C+37.5S-4.9AB-13.7AC-7.1BC-42.2AS-38BS-27.2CS A, B, C, and S are respectively the percentage of aggregates with three particle sizes in the total aggregate volume percentage.

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Abstract

The invention discloses a porous concrete aggregate design method based on working performance, which comprises the following steps: determining the pore, slurry and aggregate volume of concrete according to the design density, porosity, U-shaped slump and other working performance of target porous concrete, thereby determining the particle size combination of the aggregate and the mass of the aggregate required by unit volume of porous concrete. According to the method, mix proportion design is carried out based on the working performance of the porous concrete, and the problems that the porous concrete design and actual working performance are greatly different, and construction is difficult are solved.

Description

technical field [0001] The invention relates to the technical field of porous concrete preparation, and mainly relates to aggregate particle size selection and mass calculation. Background technique [0002] Aggregate is the largest part of porous concrete, which has a great influence on the working performance of porous concrete. The amount of aggregate directly determines the density of porous concrete. The porosity and pore size distribution in the aggregate have a crucial influence on the porosity and water permeability of porous concrete. Aggregate particle size and surface area affect the fluidity and spreadability of porous concrete. [0003] In the existing porous concrete mix ratio design, the aggregate particle size is mainly determined directly based on engineering experience and the principle of nearby availability, and there is a lack of reliable calculations to ensure the required porosity and pore size distribution, so the workability of the resulting porous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 朱亚洲杨张兵
Owner 科利尔环保科技有限责任公司
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