Carbonation depth detector

Abstract

The invention discloses a carbonation depth detector. The carbonation depth detector comprises a staff, a microscope, a lighting source, a camera, a detector housing, a bulge on the end of the staff, a precision gear, a signal cable, a current supply cable, an image collecting and processing chip, a video display, a roller with a spring, a power switch, a power work indicating lamp, a diode and a camera power supply module. The carbonation depth detector can clearly and truly display the color change of concrete after phenolphthalein is sprayed on concrete; and the carbonation dividing line can be accurately found through the displayed image video, thus avoiding the error caused by oblique visual observation. Therefore, the measurement is fast and the operation is simple.

Description

technical field [0001] The invention relates to a carbonization depth detector used for testing the durability of cement-based materials and structures, in particular to a detection instrument which can accurately determine the carbonization front and measure the carbonization depth through graphic amplification and imaging. Background technique [0002] Carbonation depth is an important index to measure the strength and durability of service concrete. At present, the drilling method is generally used in engineering testing and existing specifications, that is, drilling holes on the detection object with an electric drill, and then spraying the concrete around the drilling hole with phenolphthalein to distinguish the carbonized area and the non-carbonated area of ​​the concrete, that is, to find out the carbonized area. Edge or carbonization boundary, and then measure with a ruler or a vernier caliper. This method is more feasible when the carbonization depth is small and t...

AI Technical Summary

Problems solved by technology

However, when the carbonation depth of concrete is relatively large, such as on-site concrete carbonation is more serious, especially when the carbonation depth of concrete is studied in the laboratory and the concrete components are not allowed to be damaged, it is difficult or impossible to determine the boundary between the carbonized area and the non-carbonated area by sight. The above method is difficult to obtain accurate carbonation depth value, which makes the determination of concrete strength and durability index by rebound very inaccurate

[0003] At present, there are existing ruler-type and pen-type carbonation depth measurement patents for measuring the carbonation depth of concrete. The measurement depth is less than 10mm, which cannot meet the measurement of concrete components with a large carbonation depth; The measurement depth has been improved, but the measurement principle is the same as that of the ruler-type and pen-type carbonization depth measuring instruments, which mainly rely on the eyes to distinguish the boundary between the carbonized area and the non-carbonized area. boundary, and the light in the hole is poor at this time, making it more difficult to determine the carbonization front

Using current instruments to accurately measure cement-based material components with a large carbonization depth, only the components are destroyed, but this is not allowed in actual engineering or component tests in some laboratories

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