Evaluation of Shrinkage Resulted Cracking of High Strength Calcium Sulfoaluminate Cement Concrete wi

来源 :The 10th International Symposium on High Performance Concret | 被引量 : 0次 | 上传用户:wyxxzh
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  In this paper, restrained ring test and shrinkage test are carried on three kinds of concrete—high-strength portland cement concrete, high-strength calcium sulfoaluminate cement concrete and high-strength calcium sulfoaluminate cement concrete with intemal curing in order to evaluate the shrinkage induced cracking performance of the concretes.The experimental results show that calcium sulfoaluminate cement concrete exhibits lower shrinkage caused by surface drying comparing to portland cement concrete.Intemal curing can eliminate most of the autogenous shrinkage of concrete.In the ring test, the latter two concrete did not crack during the whole test history—42 days, while high-strength portland cement concrete cracked at the 13th day after casting.High strength calcium sulfoaluminate cement concrete exhibits better anti-cracking ability than the high strength portland cement concrete with the same strength grade.
其他文献
  中国散裂中子源(China Spallation Neutron Source)快循环质子同步加速器(Rapid Cycling Synchrotron)中,射频功率源以铁氧体加载腔为负载,提供加载腔与束流所需的射频功
丝网印刷电池工艺清洗制绒工序流程·NaOH去除硅片表面损伤层和制取绒面.· HC1去除硅片表面的金属杂质离子.·HF去除硅片表面的氧化层.清洗制绒的目的* 清除硅片表面的金属
会议
  稀土矿物种类多,品位低,而且稀土元素性质十分相似,提取分离困难,工艺流程复杂,化工材料、水及能源消耗高,循环利用率低,单位产品污染物产生量较大,加之目前稀土冶炼企业环保方面
主要内容背景介绍西门子法多晶硅技术进展与成本下降情况我国改良西门子法多晶硅生产发展继续研究开发冶金法多晶硅我国多晶硅产业面临的问题及应对措施一、背景介绍多晶硅对
会议
  This talk discusses various types of uncertainties existing in engineering systems including random and fuzzy uncertainties.Different theories for modeling
  研究了带有分数阶导数阻尼的单自由度线性单边碰撞系统在有界随机噪声激励下的共振响应问题。用Zhuravlev变换将碰撞系统转化为非碰撞系统,然后用Krylov-Bogoliubov平均法
  工程设计中除了预设的地震、风振等自然灾害的作用外,现代结构服役过程中还容易遭受爆炸、碰撞、冲击、火灾或地基塌陷等偶发灾害事件的作用。传统设计中对结构倒塌规律认
  Autogenous shrinkage strains may cause cracking of brittle cement-based systems.The lower the water/cement ratio of a mixture, the higher the autogenous shr
  响应面法通过将结构功能函数或响应量等隐式函数显性化,发展成为结构可靠度分析的重要方法。但传统响应面法属于标量型,难以在随机空间和结构空间高效、准确地拟合结构响
  The creep of the concrete might cause comprehensive effect on the structure, such as stress redistribution and pre-stress relaxation.To better understanding