A Proportioning Method of Void Concrete

A technology of void and mix ratio, applied in data processing applications, instruments, complex mathematical operations, etc., can solve the problems of lack, the reasonable volume of the clean slurry cannot be guaranteed, lack of scientificity or rationality, etc., to reduce the volume and dryness. shrink, improve work performance, and reduce costs

Active Publication Date: 2021-06-18
四川省三台县波特兰商品砼有限公司
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Problems solved by technology

[0006] (2) There is a lack of connection between the amount of coarse aggregate and porosity: the amount of coarse aggregate in each square of void concrete = close packing density * 0.98, and the amount of coarse aggregate is determined by the close packing density. When the single-grain coarse aggregate is small The porosity of close-packed concrete may be lower than or close to the porosity of void concrete, so that the reasonable volume (ie dosage) of net slurry cannot be guaranteed, so it lacks scientific or rationality

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  • A Proportioning Method of Void Concrete
  • A Proportioning Method of Void Concrete
  • A Proportioning Method of Void Concrete

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Embodiment

[0146] A method for proportioning void concrete, which requires the preparation of porosity not less than 20%, water permeability >1.0, strength grade C30, mixing on site, initial setting time not less than 1 hour, final setting time not less than 2 hours, and Fly ash is as admixture, and described proportioning method comprises the following steps:

[0147] (1) Initially determine the net slurry and measure the density:

[0148] 1. Select the raw materials for the net slurry: cement, water, fly ash, admixture, the cement uses ordinary Portland cement with a strength grade of 42.5, the water uses drinking water, and the fly ash uses grade I fly ash, plus The agent is polycarboxylate water reducer.

[0149] 2. Determination of raw material indicators: the standard deviation statistics are 5 according to the specification, the cement strength is 42.5Mpa, the affluence coefficient statistics are 1.1, the 28-day compressive strength of cement = 42.5*1.1 = 46.75Mpa, the test deter...

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Abstract

The invention discloses a proportioning method of void concrete, which comprises the following steps: (1) initially determining the net slurry and measuring the density; (2) determining the porosity; (3) determining the coarse aggregate and its dosage; (4) determining the net slurry Slurry and dosage; (5) Trial mix and base mix ratio for workability inspection; (6) Determine production mix ratio and test mix for testing. The technical scheme of this application uses coarse aggregate and net slurry for proportioning, fully based on the fluctuation of raw materials, the influence of production and construction links, local materials, and the actual raw material detection data as the basis, avoiding the use of empirical data out of reality, and at the same time achieving The quality is controllable, the cost is reduced, and the effect of saving resources is achieved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for proportioning void concrete. Background technique [0002] Void concrete is a kind of porous concrete with the functions of air permeability, water permeability and noise reduction. The popularization and application of void concrete is of great significance to the improvement of urban ecological environment. Due to the limited understanding of environmental protection, with the rapid advancement of the country's urbanization process, urban roads, squares, courtyards, parking lots, etc. are hardened with impermeable materials on a large scale, which leads to a shortcut in the atmospheric rainwater circulation system, causing atmospheric rainwater to carry air The dust in the dust passes through the impermeable ground of the town, and after continuing to pollute, it enters the city's ground and is discharged into the ditch river, causing the water quality ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06Q50/08
Inventor 龙凤全
Owner 四川省三台县波特兰商品砼有限公司
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