两端修正法在混凝土测强曲线中的应用研究

对国家、北京和青岛混凝土测强曲线各测强区段误差进行了统计分析,结果表明各测强曲线在曲线两端的测强区段内计算误差较大且具有一定规律性,经分析比较采用了合适的修正公式分别对青岛地区商品混凝土综合测强曲线的两端进行了曲线修正,误差分析表明修正后的测强曲线具有更高的检测精度。利用青岛地区工程现场的检测数据对修正前和修正后的测强曲线进行了验证,结果表明修正后的测强曲线在两端测强区段内明显优于修正前的测强曲线。

Application Research on a Revisional Method at Both Ends of Concrete Strength-detecting Curve

Statistical deviation analysis on each section of strength-detecting curves in Beijing,Qingdao and country are made.The result shows that the computational deviation is more obvious and disciplinary in both ends of concrete strength-detecting curve.Based on analysis and comparison,appropriate formulas is adopted to revise both ends of Qingdao concrete strength-detecting curve for combined method.The deviation analysis shows that the revised strength-detecting curve has higher detection precision.Certified by site nondestructive test data in Qingdao area,the superiority of revised curve in both ends is proved.