闽南地区花岗岩机制砂非泵送混凝土回弹法测强曲线的建立与分析  

Establishment and Analysis on Rebound Method Strength-measuring Curve of the Granite Machine-made Sand Non-pumped Concrete In South Region of FuJlan

作　　者：何信生[1,3] 张锦[2,3] 严捍东[2,3] 陈治平[2,3] 

机构地区：[1]中泰福建混凝土发展有限公司,福建惠安362121 [2]华侨大学土木工程学院,福建泉州362021 [3]中泰华侨大学研发中心,福建泉州362021

出　　处：《中国包装科技博览（混凝土技术）》2011年第7期1-5,共5页China Science and Technology Review

基　　金：泉州市科技计划项目基金资助（2010G26）

摘　　要：针对闽南地区花岗岩机制砂配制不同强度等级的非泵送混凝土试块，按照JGJ／T23-2001《回弹法检测混凝土抗压强度技术规程》的标准方法分别测试14d、28d、60d、90d、180d、360d混凝土试块的回弹值、碳化深度值和破损强度值，并选用指定的幂函数模型来拟合回弹、碳化深度和实际抗压强度三者之间的关系。最后通过回归分析建立闽南地区花岗岩机制砂非泵送混凝土回弹法测强曲线，并在现场工程实践中得到了验证。In view of South Region of Fujian, granite machine-made sand is made to different strength levels of the non-pumped concrete briquettes.According to the standard method of ＂Technical regulation of rebound method detecting concrete compression strength＂ （ JGJ/T23-2001 ）, the concrete briquettes＇ rebound value, carbonation depth value and damaged strength value are tested by 14d, 28d, 60d, 90d, 180d, 360d. The specified power function model is selected to analyse the relation among the rebound, carbonation depth and the actual compressive strength.The final regressive analysis is used to establish on rebound method strength-measuring curve of the granite machine-made sand non-pumped concrete in South Region of Fujian, and the curve has been verified in the scene project practice.

关 键 词：机制砂 非泵送混凝土 回弹法 测强曲线 回归分析 

分 类 号：TU375[建筑科学—结构工程]