混凝土芯样强度的正交试验研究  

Orthogonal experimental study on strength of concrete core samples

作　　者：孙宁[1] 符英杰 

机构地区：[1]商丘师范学院建筑与土木工程系,河南商丘476000 [2]太康县建设局,河南太康475415

出　　处：《河南城建学院学报》2010年第2期32-35,共4页Journal of Henan University of Urban Construction

摘　　要：通过不同直径芯样强度与同条件试块抗压强度比较和对影响芯样强度的各种因素进行正交分析,得出芯样直径对其强度影响水平是显著的,φ100 mm芯样混凝土芯样强度与同条件试块抗压强度相当,而φ70 mm芯样混凝土芯样强度高于同条件试块抗压强度10%左右。采用小直径芯样强度作为检验和评估混凝土的质量是可行的、可靠的。Compressive strength of different diameter core sample were compared with cubic compressive strength of concrete under same curing conditions,and we analyzed various factors of the core samples by orthogonal experiment.Core samples obtained diameter of the impact of their intensity level is significant.The strength of core samples of 100 mm concrete core sample is the same as that of blocks under the same test conditions,while the strength of 70 mm core samples is 10% higher under the same kind of conditions.It is feasible and reliable to use small-diameter core sample as the test and assess the quality of concrete.

关 键 词：混凝土 芯样抗压强度 正交试验 方差分析 

分 类 号：TU502[建筑科学—建筑技术科学]