Abstract

At present, the application of high performance concrete in super high-rise building engineering structure is more and more extensive. The mix proportion of high-strength concrete is the basic variable of concrete, and the rebound detection of building structure is carried out. On this basis, the design method of building pressure matching is proposed. Due to the large error of the estimated value of the strength test curve unified by the whole country, in a new project in Xi’an, the rebound method and core drilling method are carried out on several concrete members, and it is concluded that the test results of rebound method and core drilling method with different strength levels are quite different. In view of the difference of test results of mix proportion rebound method of high-strength concrete of super high-rise buildings in Xi’an area, the correction method of rebound difference of different strength levels is put forward.

Highlights

  • With the continuous development of concrete science, the application of concrete is more and more extensive

  • The concrete mix proportion is calculated according to the solid rebound detection results

  • The research results of mix proportion and solid rebound detection of high-strength concrete in super high-rise buildings ensure the quality acceptance of engineering.The effectiveness is of practical significance to the sampling inspection of engineering concrete structures

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Summary

Introduction

With the continuous development of concrete science, the application of concrete is more and more extensive. Due to the higher requirements of concrete quality and cost in practical engineering application, reasonable concrete mix proportion design is very important. On the premise of ensuring the engineering quality and construction requirements, reasonable selection of material concrete varieties and dosage can reduce the cost of super high-rise buildings and improve economic benefits. In the process of mix proportion and solid rebound detection of high-strength concrete in super high-rise buildings, relevant national and local design, construction and maintenance specifications should be strictly followed to ensure that the strength of high-strength concrete meets the design requirements[2]. The research results of mix proportion and solid rebound detection of high-strength concrete in super high-rise buildings ensure the quality acceptance of engineering.The effectiveness is of practical significance to the sampling inspection of engineering concrete structures

Mix density algorithm of high strength concrete
Specification for mix proportion index of high strength concrete
Experimental environment and equipment
Rebound test results and conclusions
40 Strong molding cement content
Findings
Conclusion
Full Text
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