Processing method for rubber particle concrete triaxial compression experimental data

Abstract

The invention discloses a processing method for rubber particle concrete triaxial compression experimental data. The processing method comprises the steps: obtaining displacement data points in a compression process, and converting displacement into corresponding axial strain; then according to different-degree fluctuation conditions of experimental data, carrying out primary moving average and secondary moving average of the overall data in a certain period, and drawing a stress-strain curve chart; and processing data having bias in the experimental process according to the development law of the curve, determining a turning point of the bias transiting to a compact state, and then obtaining a bias coefficient. Therefore, the physical and mechanical properties of rubber particle concrete under different mixing contents of rubber particles are studied, at the same time, the bias degree of a specimen having the bias condition is quantified, a reference value is provided for application of the rubber particle concrete in different environments, and an accurate and effective treatment method is provided for processing the rubber particle concrete triaxial compression experimental data.

Description

technical field [0001] The invention relates to a simulation experiment of rubber granule concrete, in particular to a processing method for triaxial compression test data of rubber granule concrete. Background technique [0002] With the popularization and application of rubber particle concrete, the physical and mechanical properties of rubber particle concrete have received more and more attention. At present, the common practice is to use rock triaxial testing machine to conduct triaxial compression experiments to obtain its mechanical parameters. Rock triaxial The testing machine has good pertinence for brittle materials such as rocks, and its device for detecting rock force is relatively sensitive, and the compression amount of standard rock specimens is extremely limited, but the compressive strength of rubber particle concrete is not very high, and Due to the high compression performance, the matching between the rock triaxial testing machine and the rubber particle ...

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Problems solved by technology

[0002] With the popularization and application of rubber particle concrete, the physical and mechanical properties of rubber particle concrete have received more and more attention. At present, the common practice is to use rock triaxial testing machine to conduct triaxial compression experiments to obtain its mechanical parameters. Rock triaxial The testing machine has good pertinence for brittle materials such as rocks, and its device for detecting rock force is relatively sensitive, and the compression amount of standard rock specimens is extremely limited, but the compressive strength of rubber particle concrete is not very high, and Due to the high compression performance, the matching degree between rock triaxial testing machine and rubber particle concrete is limited. The triaxial testing machine developed for rubber particle concrete is very expensive and has no promotion value. Therefore, based on the existing experimental conditions It is of practical significance to process the experimental data

[0003] There are a series of problems in the triaxial compression test of rubber particle concrete using a rock triaxial testing machine. Due to the large compression of rubber particle concrete, especially in the case of high rubber particle content, its axial deformation can reach 2cm or more, which has exceeded the range of the extensometer; in the process of compression, due to the existence of rubber particles, the rubber particle concrete still has a certain compressive strength under the condition of a certain compression deformation, through the obtained data It is not difficult to find that this characteristic makes the overall data amplitude larger, and the data directly output by the rock triaxial testing machine cannot effectively obtain the physical and mechanical properties of the specimen; during the triaxial compression process, since the upper and lower surfaces of the specimen are not absolute Flat, the rubber particle concrete material is not continuous and uniform, and the axial pressure device of the triaxial testing machine is not completely horizontal. The degree of stress cannot be effectively quantified

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