粉煤灰膨胀剂对喷射混凝土力学性能影响试验  

Experiment Test on Expanding Agent Affected to Mechanics Performances of Fly Ash Shotcrete

作　　者：申文萍[1] 马芹永[1] 李伏虎[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《煤炭科学技术》2012年第4期42-44,51,共4页Coal Science and Technology

基　　金：高等学校博士学科点科研基金资助项目(20093415110001)

摘　　要：基于一定掺量速凝剂条件下,对喷射混凝土掺不同量的粉煤灰与膨胀剂下的力学性能进行了研究。结果表明,单掺膨胀剂的喷射补偿收缩混凝土在膨胀剂掺量为6%时,抗压、劈裂抗拉强度较好;单掺粉煤灰的喷射粉煤灰混凝土,抗压、劈裂抗拉强度随粉煤灰掺量增加而下降;粉煤灰混凝土在膨胀剂掺量为6%、粉煤灰掺量为10%时效果最佳,抗压、劈裂抗拉强度相对于素混凝土分别增加了4.5%、6.6%。Under the certain accelerating agent mixed, a study was conducted on the mechanics performanees of the shotcrete under the effect of the different quantity fly ash and swelling agent mixed. The study results showed that when the mixed value of the swelling agent was 6%, the shrinking compensated shotcrete with a single swelling agent mixed would have good compressive and splitting tensile strength performances. As for the shot fly ash concrete with single fly ash mixed, the compressive and splitting tensile strength would be reduced with the fly ash mixed value increased. When the swelling agent mixed value was 6% and the fly ash mixed value was 10% , the effect of the shot shrinking compensated fly ash concrete will be the best and the compressive and splitting tensile strength would be in- creased with 4. 5% and 6.6% higher than the plain concrete individually.

关 键 词：粉煤灰 补偿收缩混凝土 抗压强度 劈裂抗拉强度 喷射混凝土 

分 类 号：TU528.41[建筑科学—建筑技术科学]