【摘要】 针对大体积混凝土设计施工中存在的问题，引进了双掺技术，研究了粉煤灰和复合减水剂在混凝土中的作用机理。通过试验，分析了双掺技术对大体积混凝土性能、凝结时间、强度、干缩、绝热温升和发热量等指标的影响，为建筑施工企业提供了科学的理论依据。更多还原

【Abstract】 In the light of the problem at the bulky concrete’s design-build process, I have recommended the technology of double mixture, researched the effect mechanism in the concrete. At the same time. I have analyzed the influence of the technology of double mixture to many targets through test. Such as performance of the bulky concrete .Setting time strength dry-shrinkage temperature rise of adiabatic quantity of the heat and so on. The result have provided the scientific theoretical basic to the building construction enterprise.更多还原