自密实自应力混凝土力学性能及自应力值测定试验研究  

Mechanical Performance and Self-stressing Value Determination of Self-compacting and Self-stressing Concrete

作　　者：韩春刚 刘英达 余友于 赵根田[1] 

机构地区：[1]内蒙古科技大学土木工程学院,包头014010 [2]包头市建筑设计研究院,包头014010 [3]内蒙古第三电力建设工程有限责任公司,包头014010

出　　处：《硅酸盐通报》2017年第9期3112-3118,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51268042)

摘　　要：试验通过P1、P2型与Z型自密实自应力混凝土进行力学性能比较,研究不同配合比及不同养护条件对自应力值的影响;对三联试模测定的混凝土自应力值和自密实自应力钢管混凝土测定的自应力值进行比较,研究新方法的可行性。结果表明:三种混凝土均能产生较高自应力值,都具有良好的膨胀效果和自密实特点;在同养护条件下,P型混凝土自应力值均比Z型高;其中养护环境对自应力值有较大影响;用三联试模来测定自密实自应力混凝土自应力值是切实可行的。In the experiment,comparison was carried out on the mechanical properties of Model P1,P2 and Model Z self-compacting and self-stressing concrete to study the influences of different mix proportions and curing conditions on self-stressing value. Also,comparison was carried out between the self-stressing value of concrete measured in the triple testing mold and the self-stressing value of selfcompacting and self-stressing concrete-filled steel tube to study the feasibility of the new method. The results show the follows： the three types of concrete all have high self-stressing values,and have sound expansion effect and self-compacting. Under the same curing conditions,the self-stressing value of Model P concrete is higher than that of Model Z. Curing environment has a great influence on self-stressing value. It＇s practical and feasible to measure the self-stressing value of self-compacting and self-stressing concrete in triple testing mold.

关 键 词：自密实混凝土 自应力混凝土 养护条件 三联试模 自密实自应力钢管混凝土 

分 类 号：TU528.55[建筑科学—建筑技术科学]