恒负温自密实混凝土的研究与应用

Research and Application on Self-compacting Concrete under Constant Subzero Temperature

随着混凝土技术的发展,负温混凝土的应用越来越多。针对恒负温施工的特殊工况,结合混凝土新成熟度理论分析,采用自身防冻和辅助防冻相结合、新型添加剂等多种技术,设计恒负温自密实混凝土配合比,并对其工作性能进行了研究,从混凝土设计、生产和施工等环节提出了一系列方法措施。

As the development of concrete technology, subzero concrete are widely used. To satisfy the engineering re-quirements at subzero temperature, some technologic measures are adopted on self-compacting concrete design under con-stant subzero temperature, such as analyzing by new maturity theory, self anti-freezing combined additional measures and new admixture adopting. Meanwhile, the workability of concrete is researched, and some measures on design, production and construction of concrete are proposed in this paper.