Method and system for detecting moisture content of sand and gravel

Abstract

The invention provides a method and system for detecting the moisture content of sand and gravel. The sand and gravel are evenly laid on the conveyor belt of the feed port of the mixing station with a preset thickness to form a sand and gravel belt with a preset thickness and a preset width, and the sand and gravel are randomly selected for mixing. A certain length of gravel belt on the conveyor belt of the feeding port of the station, and measure its resistance value, measure the length of the gravel belt, and calculate the unit length on the conveyor belt of the feeding port of the mixing station according to the length of the gravel belt and its resistance value , the preset thickness and the preset width of the resistance value of the gravel belt, obtain the corresponding relationship between the resistance value of the unit length, the preset thickness and the preset width of the gravel belt and the moisture content of the gravel, according to the unit length, preset thickness and preset The corresponding relationship between the resistance value of the wide sand and gravel belt and the moisture content of the sand and gravel, and the resistance value of the unit length, preset thickness and preset width of the conveyor belt at the feed port of the mixing station, online and accurate calculation of the sand and gravel moisture content.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a method and a system for detecting the water content of sand and gravel. Background technique [0002] Concrete refers to the collective name of engineering composite materials that aggregate aggregates into a whole by cementitious materials. It is widely used in civil engineering. An important parameter to judge whether the concrete is qualified is the slump of the concrete. [0003] The slump mainly refers to the plasticizing performance and pumpability of concrete. It is a quantitative index to measure its degree (plasticization and pumpability) and is used to judge whether the construction can proceed normally. There are many factors that affect the slump, the most important of which is the moisture content of the sand. At present, the conventional method of testing the moisture content of sand and gravel raw materials is random inspection. The sand and gravel obtained by ...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a method and system for detecting the water content of sand that can be detected online in order to solve the problem that the existing sand water content detection methods cannot be detected online.

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