“双掺”高性能钢管混凝土膨胀性能分析  

Analysis of expansion performance of "double mixed" high-strength steel-tube concrete

作　　者：周茗如[1] 王强[1] 郭士刚 乔宏霞[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]甘肃建设工程咨询设计有限责任公司,甘肃兰州730030

出　　处：《兰州理工大学学报》2010年第6期107-110,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省建设科技攻关项目(JK2007-11);兰州理工大学博士启动基金(SB04200803)的资助

摘　　要：采用"双掺"法,研究钢管混凝土的强度性能、膨胀性能及抗压强度与膨胀的协调发展性能,分析钢管混凝土中粉煤灰和膨胀剂的作用效果.结果表明:膨胀剂掺量相同时,膨胀率随着粉煤灰的掺量的增加而增大,强度随着粉煤灰掺量的增加而减小;粉煤灰掺量相同时,膨胀率随着膨胀剂掺量的增加而增大,抗压强度随着膨胀剂掺量的增大而减小.The characteristics of strength,expansion as well as the coordination between compressive strength and expansion of steel-tube concrete were investigated by using ＂double mixed＂ method.The effects of interaction between expanding agent and fly ash on steel-tube concrete were analyzed.The results showed that with the same amount of expanding agent and increase of the amount of fly ash,the expansion rate was increased while the strength decreased;with the same amount of fly ash and increase of expanding agent amount,the expansion rate was increased while the strength decreased.

关 键 词：双掺 钢管混凝土 膨胀性能 抗压强度 

分 类 号：TU528.31[建筑科学—建筑技术科学]