Detection and inference of potential hazards of discretely distributed free calcium oxide in concrete
The current standard for detecting the potential hazards of free calcium oxide on concrete uses methods such as thin-film and core sample specimens fried in boiling water.However,these specimens have a small volume,which introduces significant randomness in detecting the potential hazards of free calcium oxide distributed discretely in concrete.In this study,the solid concrete wall and slab of a project were taken as the research object,and the effect of over-burned lime mixed in solid concrete on concrete quality was inferred from the aspects of appearance,thickness,ultrasonic sound time and compressive strength changes through boiling experiment.The results show that the detection inference of appearance,thickness,ultrasonic sound time and compressive strength change before and after boiling is more comprehensive and accurate than the test results of the current standard methods,has certain reference significance for the prevention and control of related accidents and quality testing.
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