摘要
本文为高强混凝土(60～80MPa)抗裂强度的试验研究。对其轴心抗拉强度、劈裂抗拉强度和抗折强度均进行了量测。为量测抗折强度,采用了不同高度的矩形截面和菱形截面混凝土梁。试验结果表明,高强混凝土的脆性明显地比普通混凝土大,现行设计规范中关于普通混凝土梁抗裂强度计算的条款对高强混凝土已不尽适用。
Cracking resistance for high-strength concrete ranging from 60 to 80 MPais evaluated in this paper.The axial tensile strength, splitting tensile strength,and modulus of rupture of high-strength concrete were measured.For de-termining the modulus of rupture, two types of concrete beams with rectan-gular and rhombic cross-section respectively and various height,were tested.Test results show that high-strength concrete is obviously more brittle thannormal concrete and the provisions for predicting cracking resistance of con-crete beams in the current Code are not valid for high-strength concrete.
出处
《土木工程学报》
EI
CSCD
北大核心
1992年第2期23-31,共9页
China Civil Engineering Journal
基金
国家自然科学基金
城乡建设科技发展基金
