A method for detecting overfilling of concrete

Abstract

The invention provides a method for detecting concrete super-filling. Mechanical and electronic methods are adopted to cooperate to achieve measurement, and the result is more accurate; a super-filling device is assembled and detected according to the determined measurement height; an anode electrical impedance detection probe and a cathode electrical impedance detection probe are installed on the lower end face of a supporting rod piece, concrete grouting is carried out, when flow state concrete reaches the height where the anode electrical impedance detection probe and the cathode electrical impedance detection probe are located, an overground electrical impedance detector will display advanced marked data, and grouting is paused at the time; an upper H-shaped piece lower plate and a lower H-shaped piece upper plate in an extrusion structure are compressed until mud and cement mortar are discharged out from screens of a cylinder, and displacement of a lead screw sleeve is recorded; and the recorded displacement of the lead screw sleeve is analyzed, the solid macadam volume fraction is determined, and therefore the height of the flow state concrete in the cylinder is obtained, and mutual verification with the electrical impedance detection result is carried out. The method can be widely applied to height measurement of the flow state concrete in filling pile holes, and super-filling of the concrete is prevented.

Description

technical field [0001] The invention discloses a method for detecting concrete overfilling, which belongs to the technical field of building concrete pouring measurement. Background technique [0002] The traditional method of measuring the concrete surface level of bored piles is to measure with a measuring hammer with a measuring rope. The measuring hammer weighs about 1 kg and is conical. The measuring hammer is put into the pile hole manually. Since the concrete contains gravel and other coarse aggregates, when the measuring hammer passes through the concrete, the feel of the measuring staff is different from that in the mud. It is confirmed by this feeling As for the elevation of the concrete surface, it can be seen that with the increase of the buried depth of the concrete surface, the measurement error becomes larger and larger. With the increase of the hole depth, the measurement error of the measuring hammer is getting bigger and bigger, and the elevation control o...

AI Technical Summary

Problems solved by technology

[0003] 1. The waste of engineering materials leads to the increase of engineering costs;

[0004] 2. The difficulty of intercepting the pile head, the increase in transportation and disposal costs, resulting in environmental pollution around the disposal of piled concrete waste blocks;

[0005] 3. Prolong the construction period of the foundation pit

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