Rapid inspection method for construction quality of horizontal joints

Abstract

The invention provides a method for quickly detecting the construction quality of horizontal joints, S1: select a detection device, and the detection device is standby; the detection device includes two probes, a detection surface, a low-frequency ultrasonic detection device, a data processor and a display screen ; S2: Point-fixing step, measuring and drawing a center line extending along the length direction of a horizontal joint to be detected, and drawing and numbering a plurality of detection points on the center line according to preset intervals; S3: using two probes and The low-frequency ultrasonic detection device detects and obtains multiple wave velocity values ​​between two adjacent detection points, and the display screen displays the wave velocity information detected by the low-frequency ultrasonic detection device in real time; S4: The data processor judges the horizontal joint according to the preset algorithm and the wave velocity value Whether there are defects, and display the detection results. A method for quickly detecting the construction quality of horizontal joints of the present invention, which cooperates with a detection device, can quickly determine the location of defects.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to a method for rapid detection of construction quality of horizontal joints. Background technique [0002] Different from the cast-in-place concrete structure, there are many horizontal joints between the prefabricated components of the prefabricated concrete structure. These horizontal joints are generally long in length, the width is the same as the wall or column thickness, and the height is generally small, usually about 20mm. It is generally filled with cement-based grouting material. Due to the relatively long and narrow horizontal joints and limited testing space, once construction defects occur, it is difficult or inefficient to use conventional non-destructive testing methods to detect, especially the testing results cannot be displayed immediately and quickly on site, and special calculations are often required afterwards. judge. These horizontal joints are often ...

AI Technical Summary

Problems solved by technology

Since the horizontal joints are narrow and long, the detection space is limited. Once a construction defect occurs, it is difficult to detect or the detection efficiency is relatively low with conventional non-destructive testing methods. In particular, the detection results cannot be displayed immediately and quickly on site, and special calculations are often required afterwards. judge

And these horizontal joints are often located in important stress-bearing parts of the structure. When defects such as holes that are not filled densely appear, it may have an adverse effect on the overall mechanical performance of the structure.

At present, there is still a lack of a detection method that can adapt to the narrow and long horizontal joints on the one hand, and can easily and quickly determine the defect location on the other hand.

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