Method for rapidly judging stone content of concrete

Abstract

The invention discloses a method for rapidly judging the stone content of concrete. The method comprises the following steps: mixing concrete mixture according to the preset concrete theoretical mix proportion; fetching a certain amount of concrete mixture from the prepared concrete mixture as the judgment sample; screening stones from the judgment sample, calculating the stone content of the judgment sample according to the weight of the stones and the weight of the judgment sample; calculating the actual stone weight of the concrete mixture according to the stone content of the judgment sample; comparing the actual stone weight of the concrete mixture and a theoretical stone weight to obtain a stone weight deviation of the concrete mixture; judging whether the stone weight deviation is in a tolerant deviation range or not, and correcting the stone weight deviations that are not in the tolerant deviation range. The provided method is capable of rapidly acknowledging the stone content of a concrete mixture in advance, and thus guarantees the durability of a concrete structure.

Description

technical field [0001] The invention relates to a concrete mixing ratio control, in particular to a method for quickly judging the stone content ratio in concrete. Background technique [0002] Concrete is composed of cement, sand, stone, water, admixtures and blended materials. Sand and stone are aggregates in concrete, which act as a skeleton. Generally, aggregates with a particle size of 5 mm or more are called stones, and aggregates with a particle size of 5 mm or less are called sand. For concrete used in engineering, before concrete mixing and production, it is necessary to determine the concrete construction mix ratio, that is, the amount of various constituent materials in one side of concrete, and then determine the content of various materials based on the determined total mass of one side of concrete. The existence of stones can effectively reduce the shrinkage and cracking of concrete. Therefore, when designing the concrete mix ratio, it is hoped that on the pre...

AI Technical Summary

Problems solved by technology

However, since there are some particles larger than 5mm in the sand, the pebbles in the river sand often account for more than 10%. If the control is not accurate during production, when the amount of stones is large, the pump pipe may be blocked during the pumping process, which will reduce the pumpability of the concrete. If the amount of stones is less than the design value, the concrete will crack. Cause a greater quality hidden danger to the quality of concrete

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