C80自密实混凝土配制研究

发布时间：2018-03-23 17:12

本文选题：C80　切入点：自密实混凝土　出处：《重庆交通大学》2014年硕士论文

【摘要】：随着建筑设计理念的不断创新，特大型建筑工程、地标型建筑的结构设计日趋复杂，对混凝土技术和施工提出了更高的要求。C80自密实高性能混凝土为解决配筋密集的高强混凝土结构提供了有效技术措施。本文根据全计算法计算出C80自密实混凝土配合比，选择粉煤灰、矿粉、硅粉三因素三水平进行正交试验，优选出矿物掺合料的最佳掺量；分析了水胶比、单位用水量、胶凝材料用量、砂率、集料级配等对C80自密实高性能混凝土工作性和力学性能的影响，最显著的影响因素是水胶比；在此基础上，试验分析了C80自密实混凝土的抗渗性和收缩性能；提出了配制C80自密实高性能混凝土的原材料技术要求和技术途径，，为工程应用提供一定的参考价值。
[Abstract]:With the continuous innovation of architectural design idea, the structural design of super large scale building and landmark building is becoming more and more complicated. Higher requirements for concrete technology and construction. C80 self-compacting high performance concrete provides effective technical measures for solving reinforced high-strength concrete structures. According to the total calculation method, the mixture ratio of C80 self-compacting concrete is calculated, and the orthogonal test is carried out at three levels of fly ash, mineral powder and silica fume, and the optimum addition amount of mineral admixture is selected, and the water binder ratio and water consumption per unit are analyzed. The most significant factors affecting the workability and mechanical properties of C80 self-compacting high performance concrete are the ratio of water to binder. The impermeability and shrinkage properties of C80 self-compacting high performance concrete are analyzed experimentally, and the technical requirements and technical approaches of raw materials for preparing C80 self-compacting high performance concrete are put forward, which provide certain reference value for engineering application.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU528

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