粉煤灰综合利用 2010no.6 FLY ASH COMPREHENSIVE UTILIZATION 回弹法检测高强混凝土强度回归方程的比较* Regression Equations Comparison of Rebound Method Testing Strength for High-strength Concrete 边智慧,陈朝阳,赵士永,戴占彪2 (.河北省建筑科学研究院,石家庄0500212.河北建研科技有限公司,石家庄050021) 要:介绍了回弹法检测C50以上高强混凝土强度的试验研究过程,总结认为回弹法检测高强混凝土强度是可行 的,并通过多个回归方程式进行试算比较,取精度高者作为绘制测强曲线的依据 关键词:回弹法高强混凝土:检测测强曲线;回归方程 中图分类号:TU522 文献标识码:A文章编号:1005-8249(2010)060006-03 Bian Zhihui' ,Chen Zhaoyang' ,Zhao Shiyong' ,Dai Zhanbiao ( 1.Hebei Academy of Building Research ,Shijiazhuang Hebei 050021 2 .Hebei Building Research Engineering Co ,Itd ,Shijiazhuang Hebei 050021 ) Abstract :The paper introduces the experiment study of rebound method testing strength for high-strength concrete above 50MPa .It is concluded that the rebound method feasible to test high-strength concrete strength .By paring several regression equations and pilot calculation ,the precision higher is the basis for strength curvea . Key words :rebound method :high-strength conerete :teating :strength curves ;regresaion equation 回弹法是用一个弹簧驱动的重锤,通过弹击杆 回弹仪器:在回弹试验中发现采用原标准回弹仪 (传力杆)弹击混凝土表面,并测出重锤被反弹回来的 (2.207J)对高强混凝土进行回弹试验,回弹值与混凝 距离,以回弹值(反弹距离与弹簧初始长度之比)作为 土强度之间离散性很大,针对这种情况我们采用中国 与强度相关的指标,来推定混凝土强度的一种方法。 ...
回弹法检测高强混凝土强度回归方程的比较.pdf
