锂渣、粉煤灰高性能混凝土早期抗裂性能试验研究.pdfVIP

学兔兔 2012年第 1期(总第 267期 ) 混 凝 土 原材料及辅助物料 Number 1 in 2012(Total No．267) Concrete MATERL L AND ADMINICLE doi：10．3969／j．issn．1002—3550．2012．01．020 锂渣、粉煤灰高性能混凝土早期抗裂性能试验研究 杨恒阳，周海雷，侍克斌，吴福飞 (新疆农业大学 水利与土木工程学院，新疆 乌鲁木齐 830052) 摘 要：利用刀口法研究了水胶比、锂渣掺量、粉煤灰掺量和锂渣细度对复掺锂渣、粉煤灰高性能混凝土早期塑性收缩裂缝的影响，试 验结果表明水胶比对混凝土早期抗裂性能影响较大，粉煤灰掺量和锂渣掺量分别次之。在相同条件下，复掺锂渣、粉煤灰高性能混凝土的 早期抗裂性能优于普通水泥混凝土，锂渣细度的适度增加会在一定程度上提高混凝土的早期抗裂性能。 关键词：高性能混凝土；锂渣；粉煤灰；刀1：3法；水胶比；掺量；早期抗裂性能 中图分类号：TU528．041 文献标志码： A 文章编号： 1002—3550(2012)01—0065—03 Experimental study on the cracking resistance at early ages of high performance concrete added with lithium slag and fly ash YANGHcng-yang，ZHOUHai—lei，SHIKe—bin，WUFu一 玎 (CollegeofHydraulic andCivilEngineering，XinjiangAgriculturalUniversity，Ummqi 830052，China) Abstract： It studies the contribution of water to binder ratio，lithium slag dosage，fly ash dosage and lithium slag fineness to the early-age plastic shrinkage and cracking ofhigh performance concrete added、Ⅳitl1 lithium slag and fly ash．The experiment demonstrates the water to binder ratio has the most influence among the three factors，and the lithium slag dosage has the least．The cracking resistance at early ages of hi曲 performance concrete added、vith lithium slag and fly ash is better than that of common cement concrete in the same condition． To some extent．the increase oflithium slag fineness call improve the cracking resistance at early ages Of high performance concrete． Keywords：hi曲performance concrete；lithium slag；flyash；knife—edgemethod；watertobinder ratio；poraver；cracking resistanceatearlyages 本试验采用刀口法对复掺锂渣、粉煤灰高性能混凝土的早 0 引言