Ultrasonic Testing Of Cement Concrete Strength

Concrete is one of the most important material of civil engineering. Quality of the structure concrete will affect the safety of structure directly. Traditional method of the structure concrete quality test base on the cube sample selected according to regulation. But for the production condition , maintain environment ,force bearing status etc of the sample are different with that of the structure concrete, Performance index of the test concrete sample is different with that of the actual structure concrete sometimes. But other test method such as use core sample by drilling can not represent all structure for just choose very little parts of it. So, locale test technology that test concrete quality in the structure directly has became an important method of concrete engineering quality management and is getting more and more recognition of every country in the world.This article adopt the test data in five expressway projects which are Shenyang to Shanhaiguan expressway,Shenyang to Siping expressway, Shenyang to Siping expressway,Dandong to Benxi expressway, Jinzhou to Chaoyang expressway and Shenyang to Dalian expressway expand project. By comparing the influence of all kinds of factors and analyzing prominent influence factors, We confirmed prominent influence factors and correlative coefficients through obverse crossing design. After that, we built region speciality intension test curve by regress analysis method. Quality valuation of the structure concrete intension by intension test curvecan truly reflect the actual intension of the structure concrete comparatively and can provide road-test data for the concrete structure completed.Believe in that this kind of no damage concrete test technology will be adopted cosmically to improving engineering quality effectively by sustaining test data accumulate of various region, perfecting various grade intension test curve and improving nicety of test result.