大体积混凝土夏季施工防止热量倒灌的研究

在夏季,由于大气温度较高,使得大体积混凝土从原材料的进场、搅拌、运输到浇筑的过程中不断地吸收大气中的热量,使混凝土内部热量大量地堆积,从而使其内部温度升高(即热量倒灌)。同时,由于大体积混凝土的断面尺寸大,热量不易散发,从而造成混凝土的内部与外部温差大,也使混凝土容易开裂,影响了其强度和耐久性的发展。本文根据热量倒灌的原理和混凝土的施工方法,提出防止大体积混凝土施工时热量倒灌的具体措施。

Research of amass concrete constructions preventing heat absorbed in summer

In summer, because atmosphere temperature is higher, make amass concrete from construction site of material, mix and transport to pour process continuously absorb calories from atmosphere, and make concrete inner calories pile up, thus make its inner temperature rise (also calories absorb). At the same time, because section size of amass concrete is bigger, and the calories is not easily send out, inner and exterior have bigger difference in temperature, and also make the concrete easy emergence split open, and affect its development of strength and lasting long. This paper according to the principle of calories absorb and construction method of concrete, brings up to provide concrete measure for preventing calories absorb for amass concrete construction.