摘要
水泥水化热引起的混凝土温度裂缝问题在工程中不可小觑。以某工程地下室底板为例,采用midas Civil有限元软件对比分析了基准混凝土和掺入水化热抑制剂后大体积混凝土结构不同部位温度场、温度应力场的变化,提出采用水化热抑制剂可降低早期温度应力峰值,理论上可有效控制混凝土早期温度裂缝。
The problem of temperature cracks caused by hydration heat of cement can not be underestimated in concrete structure. In this paper,the foundation slab of a project has been studied by the Midas Civil,the differences of the temperature and temperature stress have been obtained between the control concrete and the concrete with hydration heat inhibitor. On the ba-sis of analysis,the conclusion could been drawn that hydrated heat controlling agent could reduce the early temperature stress peak and control the early concrete temperature crack effectively from theoretical point of view.
引文
[1]路璐,李兴贵.大体积混凝土裂缝控制的研究与进展[J].水利与建筑工程学报,2012(1):146-150.
[2]徐仕林,王乐,徐文.基于温度场调控的大体积混凝土裂缝控制技术工程应用[J].江苏建筑,2016(4):44-47.
[3]郝兵,赵文丽,臧圣国.水化热抑制剂对大体积混凝土性能的影响研究[J].建筑技术,2017,48(10):1073-1075.
[4]张晓果,杨进波,刘虎.水化热抑制剂对大体积混凝土性能影响的研究[J].商品混凝土,2017(5):33-35.
[5]吴翠娥,刘虎,李磊,等.水化热抑制剂对膨胀砂浆早期性能的影响[J].商品混凝土,2015(10):27-29.
[6]贾福杰,张加奇,聂风义,等.水化热抑制型膨胀剂在工程中的应用[J].混凝土与水泥制品,2013(7):70-73.
[7]葛俊颖.桥梁工程软件midas Civil使用指南[M].北京:人民交通出版社,2013.
[8]朱伯芳.大体积混凝土温度应力与温度控制[M].北京:中国水利水电出版社,2012.