FIELD MEASUREMENTS OF THE HIGH-STRENGTH AND HIGH PERFORMANCE CONCRETE STRENGTH

This paper studied the characteristics of high-strength and high performance (HSHP) concrete and compared the advantages and disadvantages and the scope of the application of detection methods used to test the strength of HSHP concrete structure, such as rebound method, ultrasonic-rebound method, core-drilling method, and so on. Took Famen Temple as an example, combined with the structural characteristics of the ultra-high strength and as a cantilever, it analyzed the feasibility of each detection method in the special structure and finally determined to use the high-rebound instrument to measure strength of concrete to make the detection plan. Based on the field measurements of strength of HSHP concrete, standardize method was used to amend it and made the statistical analysis about the amendments by using the mathematical software MathCAD to assess the reliability of the concrete strength. The results show that the concrete strength followed the normal distribution and met the designed requirements. The use of the high-rebound instrument to detect HSHP concrete has been found to be satisfactory. The study can provide reference to the similar engineering of the high strength concrete steel composite structures and the special structure of cantilever.