A method for measuring the mixing ratio of coarse and fine aggregate

Abstract

A measuring method for a mixing proportion of coarse and fine aggregate relates to the field of building construction. A first contrast group is prepared, aggregate of the particle size of 0mm to 120mm is separated into eight piles of aggregate via screen meshes in the diameters of 80mm, 40mm, 20mm, 5mm, 1mm, 0.5mm and 0.25mm sequentially, and containers of the same model are used to take aggregate from the eight piles to form eight groups numbered from 1 to 8 respectively; and a second contrast group is prepared, containers of the above model are used, aggregate of any two of the eight piles is taken and mixed and stirred fully in one container, and twenty eight groups of mixed aggregate, numbered from 9 to 36, are obtained via all combination manners. The groups in the numbers from 1 to 36 are filled into glass grooves of the same depth, length and width, and smoothed out, a power switch of a ground geological radar 2 is switched on, a handheld rod 1 is held by two hands, and pushed to move in the same heights, over the numbers 1 to 36, along the glass grooves, and radar oscillograms of the first and second contrast groups are obtained. The method has the advantages that whether coarse and fine concrete aggregate is mixed uniformly can be detected at any time in the construction process.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for measuring the mixing ratio of coarse and fine aggregates to be obtained during concrete mixing. Background technique [0002] In the construction industry, concrete is the most basic civil engineering material, and it is also the most widely used and used building material. It plays an important role in the construction fields of highway engineering, bridge and tunnel engineering, construction engineering, water conservancy and special structures. substitute role. The grading of aggregates is an important part of the concrete production process. In the actual construction process, when the particle size of each group of mixed aggregates is specified in advance, it is undoubtedly the most important thing to know whether the coarse and fine aggregates in the concrete are mixed uniformly at any time. Most importantly, it can not only reduce redundant mixing time, b...

AI Technical Summary

Problems solved by technology

The existing ground geological radar measurement technology is: in the actual measurement, the frequency of the antenna is selected according to the required accuracy. The radar wave emitted by the high-frequency antenna has a high main frequency and high resolution, but the penetration distance is small; The radar wave emitted by the antenna has low main frequency and low resolution, but has a large penetration depth

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