A device and method for measuring the compactness of rockfill concrete

Abstract

The invention discloses a rockfill concrete compactness measuring device and a method thereof. The measuring device comprises a test rod and a fixed arm set on the upper part of the test rod. A pressure gauge is installed at the lower end of the test rod, and a testing instrument is installed at the upper end; The measuring method is as follows: After the rockfill concrete is piled up with rocks, the fixed arm is used to fix the pressure gauge and the test rod at the test point, and the angle between the horizontal plane of the test rod is measured; after the pouring is completed and the concrete surface is relatively stable, the test instrument is used to read the test rod. Take the test parameters such as the pressure value per unit area and the length of the buried section of the test rod; use the same concrete to make a concrete standard test block at the pouring site, and obtain the density value of the standard test block; use the test parameters to calculate the density of the rockfill concrete at the test point degree value. The method is convenient to use, high in precision, high in work efficiency and low in comprehensive use cost, and can be used in the detection work of multiple test points in large-scale projects and complex projects.

Description

technical field [0001] The invention belongs to the technical field of engineering construction, and relates to a method for detecting the engineering quality of an engineering building, in particular to a device for measuring the density of rockfill concrete and a method thereof. Background technique [0002] In projects such as hydropower dams, complex structures and foundations, rockfill concrete is used more and more widely as filling materials. Rock-fill concrete is a rock-fill concrete body formed by randomly filling self-compacting concrete in large-sized stones by utilizing the characteristics of high flow, good separation resistance and self-flow of self-compacting concrete. It has the advantages of less cement consumption, small hydration temperature rise, low comprehensive cost, fast construction speed, good volume stability, and strong interlayer shear resistance. However, the impact of compactness on the performance of rockfill concrete is very significant, and...

AI Technical Summary

Problems solved by technology

However, this device uses infrared photography to take infrared photos of a concrete surface, observe the compactness of the concrete through the photos, and estimate the void ratio of the concrete. It is a special method in the appearance inspection method, and the detection results are subject to personal technical level It has a great influence on the judgment method, so the test result is not ideal

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