高强自密实混凝土抗压强度现场检测方法试验研究  

Experimental Study on On-Site Detection Method of Compressive Strength of High-Strength Self-Compacting Concrete

作　　者：卜良桃[1] 赵倚天 BU Liangtao;ZHAO Yitian(School of Civil Engineering,Hu′nan University,Changsha,China,410000)

机构地区：[1]湖南大学土木工程学院,湖南长沙410000

出　　处：《沈阳建筑大学学报（自然科学版）》2020年第3期412-420,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51878262)。

摘　　要：目的为了保证高强自密实混凝土现场施工质量,弥补高强自密实混凝土现场强度检测领域的空白.方法采用回弹法、超声回弹综合法、先装拔出法、后装拔出法、钻芯法对强度等级为C50、C60、C70、C80、C90、C100的自密实混凝土构件进行现场强度检测,并将检测结果与留置的试件抗压强度值进行对比分析.结果试验得出五种方法的测强曲线和测强公式,其相关性与精确度均良好,其中超声回弹综合法测强公式误差最小.结论传统的强度检测方法仍适用于高强自密实混凝土现场强度检测,笔者提出五种检测方法的测强公式为日后的工程质量验收工作提供了指导依据.In order to ensure the quality of high-strength self-compacting concrete on-site construction,and to fill a gap in the field of high-strength self-compacting concrete field strength testing,this paper uses the rebound method,ultrasonic rebound comprehensive method,pre-loading method,post-loading method,core drilling method to test the self-compacting concrete with strength class of C50、C60、C70、C80、C90、C100.The strength curves and strength formula of the five methods are obtained through experiments,and their correlation and accuracy are good.Among them,the ultrasonic strength measurement method has the smallest error.It is concluded that the traditional strength testing method is still suitable for high-strength self-compacting concrete on-site strength testing.The strength testing formulas of the five testing methods proposed by the author provide guidance for future engineering quality acceptance work.

关 键 词：现场检测 高强自密实混凝土 测强曲线 回归分析 

分 类 号：TU391[建筑科学—结构工程]