Concrete carbonization depth detector and detection method

Abstract

The invention provides a concrete carbonization depth detector and a detection method. The concrete carbonization depth detector comprises a shell, a measuring device, a liquid spraying device and anair blowing device. The shell is provided with an air inlet, an air outlet and a display unit; a detection opening is formed in the plane part of the shell; and the diameter of the detection opening is larger than that of a to-be-detected hole in the surface of a concrete detection area. The measuring device consists of an annular lighting source, a visual sensor, a PLC, a laser displacement sensor, a rotation driving mechanism, a radial sliding driving mechanism, a data processor, a guide support and a fixing support. The liquid spraying device includes a reagent bottle, a low-pressure electric water pump, a liquid conveying pipe and a sprayer. And the air blowing device includes a motor and an impeller. According to the invention, the concrete carbonization depth detector integrating airblowing, liquid spraying and measuring functions can be carried and used conveniently; and because of automatic measurement and intelligent measurement of the carbonization depth of the laser displacement sensor, the measurement precision is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering concrete detection, in particular to a structural improvement of a concrete carbonation depth detector and an improvement of a detection method. Background technique [0002] Carbonation depth is an important indicator of concrete durability. When measuring the carbonation depth of concrete, the drilling method is usually used, that is, holes with a diameter of about 15mm and a depth of more than 10mm are cut on the surface of the measurement area. The shape of the hole is approximately conical. The inner diameter from the opening to the bottom of the hole gradually decreases, and then the powder and debris in the hole are removed with a blower device, and then the phenolphthalein alcohol reagent with a concentration of 1% is sprayed on the edge of the inner wall of the hole. When it is clear, use the depth measuring tool to measure the vertical distance from the interface between carbon...

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Problems solved by technology

[0003] However, at present, the measuring device, air blowing device and liquid spraying device usually need to be taken out separately during operation, and the removal method of debris and powder in the hole is generally to use an ear blower to blow out the gas to remove the powder and debris, and then take it out again. The spray bottle filled with 1% phenolphthalein alcohol reagent sprays the liquid on the edge of the inner wall of the hole. Mechanical scale measurement, taking the average value after each measurement, the measurement accuracy is not high, and the measurement result has a large error

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