Method for measuring and calculating foam volume in foam concrete preparing process

Abstract

The invention discloses a method for measuring and calculating the foam volume in the foam concrete preparing process. The method includes the following steps that 1, the volume of foam of a concrete mixture is calculated by measuring the total volume of the concrete mixture, the actual density of the concrete mixture and the density of common concrete; 2, the amount of foam originally added into the concrete mixture is measured, and the foam reserving rate is calculated; 3, the design density is determined, and the theoretical volume of the foam needing to be added is calculated according to the ratio relationship between the theoretical foam volume and the amount of the foam originally added into the concrete mixture; 4, a certain amount of foam is supplemented into the concrete mixture, and the amount and the volume of the supplemented foam are calculated according to the foam volume of concrete mixture, the theoretical volume of the foam needing to be added and the foam reserving rate. According to the method, traditional thinking is broken through, foam concrete with the required design density is accurately obtained by accurately calculating the volume of the foam to be supplemented, and the quality of the foam concrete is effectively improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a method for measuring and calculating the volume of foam in the preparation of foam concrete. Background technique [0002] Foam concrete is a new type of energy-saving building material. First of all, it has outstanding light-weight characteristics, which can greatly reduce the self-weight of buildings when used in non-load-bearing structures; secondly, it is porous. There are a large number of independently closed micropores in foam concrete. , so that it has good thermal insulation, heat insulation, sound insulation and other excellent properties. [0003] However, there are still several problems in the preparation of foamed concrete: 1. Affected by foaming equipment and means, mechanical stirring and foaming methods often fail to reach the foaming ratio in the foaming agent description, which is often low; 2. Prepared In the process of mixing and stirring ...

AI Technical Summary

Problems solved by technology

[0003] However, there are still several problems in the preparation of foamed concrete: 1. Affected by foaming equipment and means, mechanical stirring and foaming methods often fail to reach the foaming ratio in the foaming agent description, which is often low; 2. Prepared In the process of mixing and stirring the foam with the cement slurry, part of the foam is broken due to extrusion, water loss and other reasons, and the amount of foam in the final foam concrete is reduced; Slump and uneven

The above problems will lead to a large difference between the measured density and the design density of foam concrete, and the quality is difficult to guarantee

[0004] At present, researchers mostly start with foaming agents to develop more efficient foaming agents. For example, Chinese patent CN101638303 discloses a LC-01 foam concrete foaming agent, which is reported to better solve the problem of foaming concrete foaming. The contradiction between the expansion ratio of the agent and the stability of the foam when it is in contact with the concrete slurry, but affected by factors such as actual operation in the application, the expansion ratio is still low, and the amount of foam is small, resulting in the measured density of foam concrete and the design Deviation in density

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