摘要
上海奉贤的在水一方项目的上部楼板均采用了双曲面预应力混凝土结构,对混凝土早期强度、泵送性、流动性、凝结时间以及裂缝方面提出了很高的要求。针对这些要求,本文基于原有配合比,对混凝土和易性、凝结时间、强度和收缩性能进行了研究,设计出了符合工程要求的预应力混凝土,并通过对生产、养护环节的控制措施最终确保了本工程的顺利浇筑和混凝土质量。
The upper floor slabs of Zaishuiyifang project in Fengxian,Shanghai are all made of hyperbolic prestressed concrete structures,and high requirements are put forward for early strength,pumping,flowability,setting time,and cracks.In response to these requirements,C40 prestressed concrete was designed based on the original mix proportion that meets engineering requirements through workability,setting time,strength,and shrinkage.Control measures were taken in the production and curing stages of the concrete to ensure the smooth pouring and quality of the project at last.
作者
褚小军
CHU Xiaojun(Shanghai Construction Building Materials Technology Group Co.,Ltd.,Shanghai 200080,China)
出处
《上海建材》
2025年第1期82-87,共6页
Shanghai Building Materials
关键词
双曲面
预应力
混凝土
hyperbolic
prestress
concrete
