喷射UHTCC抗冻性能试验研究  

RESEARCH ON FREEZE-THAW RESISTANCE OF SPRAYED UHTCC

作　　者：张逸风 李庆华[1] ZHANG Yifeng, LI Qinghua(College of Civil Engi. and Architecture,Zhejiang Univ., Hangzhou 310058, Chin)

机构地区：[1]浙江大学建筑工程学院高性能建筑结构与材料研究所,杭州310058

出　　处：《低温建筑技术》2018年第4期10-12,26,共4页Low Temperature Architecture Technology

摘　　要：通过对比试验研究喷射UHTCC梁和普通混凝土梁在冻融循环后的性能变化,包括质量损失、动弹性模量损失和弯曲性能。试验结果表明,经过100次冻融循环后,喷射UHTCC的质量损失和动弹性模量损失均保持在较低水平,且仍具有应变硬化特征和多缝开裂现象,具有良好的抗冻性能。Through the comparative tests, the properties of jet UHTCC beam and ordinary concrete beam after freeze-thaw cycle were studied, including mass loss, loss of dynamic elastic modulus and bending behavior. The test results show that after 100 freeze-thaw cycles, the mass loss and dynamic elastic modulus loss of sprayed UHTCC keep at a low level, the sprayed UHTCC still has strain hardening property and excellent crack control ability, the sprayed UHTCC has excellent freeze-thaw resistance.

关 键 词：喷射 超高韧性水泥基复合材料 冻融循环 弯曲性能 

分 类 号：TU528.53[建筑科学—建筑技术科学]