膨胀剂在高掺量粉煤灰混凝土中作用效果的试验研究  

INVESTIGATION ON THE EFFECT OF EXPANSIVE AGENT IN HIGH VOLUME FLY ASH CONCRETE

作　　者：李飞[1] 覃维祖[1] 

机构地区：[1]清华大学土木工程系,清华大学结构工程与振动教育部重点实验室,北京100084

出　　处：《工业建筑》2009年第5期89-91,95,共4页Industrial Construction

摘　　要：采用温度应力试验机(TSTM)试验方法,对比研究了膨胀剂在普通水泥混凝土与高掺量粉煤灰混凝土中的作用效果,包括自由条件下的膨胀率及完全约束条件下的压应力发展。结果表明:在本试验条件下,粉煤灰与膨胀剂复合使用,发挥出超叠效应。Results of tests performed on the effect of expansive agent in normal concrete and high volume fly ash concrete are presented. The expansive deformation ratio without restraint and the self-compressive stress under complete restraint are investigated in the tests with temperature-stress test machine （TSTM）. The results indicate that combination of fly ash and expansive agent may produce a synergistic effect on the concrete under the specific condition.

关 键 词：膨胀剂 粉煤灰 完全约束 自压应力 TSTM 

分 类 号：TU528.042.4[建筑科学—建筑技术科学]