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Proportioning method for gap concrete

A technology of void and mix ratio, applied in complex mathematical operations, instruments, data processing applications, etc., can solve problems such as lack of scientificity or rationality, inability to guarantee a reasonable volume of clean slurry, and lack of it.

Active Publication Date: 2018-01-26
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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  • Proportioning method for gap concrete
  • Proportioning method for gap concrete
  • Proportioning method for gap 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 for gap concrete. The method comprises the following steps of (1) initially determining a net paste body and measuring the density; (2) determining the porosity; (3) determining coarse aggregates and a usage amount; (4) determining the net paste body and a usage amount; (5) performing trial proportioning and checking a reference proportion by workability; and (6) determining a production proportion and performing trial mix detection. According to the technical scheme, the coarse aggregates and the net paste body are proportioned; local materials are used fully according to fluctuation of raw materials and influences of production and construction links; practical raw material detection data is taken as a basis; use of empirical data and divorce from reality are avoided; and the effects of quality controllability, cost reduction and resource saving can be 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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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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