Hengyang Region Ultrasonic Rebound Concrete Strength Curve Of Experiment Research

In recent years,for the sake of the concrete strength of the structure under sampling inspection,validation,evaluation purpose,quality supervision institution,engineering supervision and construction units in the concrete structure detection of the widely used in ultrasonic rebound synthetic method.In hengyang area presumption of the structural concrete by ultrasonic rebound synthesis strength,unified national strength curve,has been used for ultrasonic rebound strength curve of national unity in hengyang area if applicable,has been no in-depth study.Actually after the region engineering detection practice,found that using the unified strength curve estimation tend to have larger deviation,the concrete strength and the measured values may seriously affect the test results.This thesisis according to the engineering practice in Hengyang area,Choosing the ready-mixed concrete as the research object,Using the raw materials from the ready-mixed concrete production factory in hengyang region,to make a batch of concrete block,carried out in accordance with the rules of ultrasonic value,rebound value,compressive strength test,data of more than 150 groups,and chooses the corresponding data model to fitting the measured parameters and practical relationship of the compressive strength,has established the hengyang region ultrasonic rebound synthesis strength curve equation,provide the reference for the engineering quality inspection personnel in our region.To establish the strength curve equation of inspection in the applicability of the hengyang region,we carried out the strength of the concrete member field engineering test,the data showed that we got by experiment ultrasonic rebound synthesis method,strength curve equation of conform to the requirements in hengyang area has a good applicability.