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大体积混凝土因比表面积较小,水化热散发困难,导致内外温差大,易引起混凝土出现裂缝,我们应对此加以重视,防止危害结构的裂缝发生。本文从保证高速铁路桥梁混凝土耐久性的角度出发,对大体积混凝土产生裂缝的原因进行分析,并对控制裂缝产生的技术进行研究。
Due to the small specific surface area of large-volume concrete, hydration heat dissipation is difficult, resulting in large temperature difference between inside and outside, easily lead to concrete cracks, we should pay attention to this, to prevent the occurrence of structural cracks. In this paper, from the perspective of ensuring the durability of high-speed railway bridge concrete, the causes of cracks in mass concrete are analyzed, and the technology of controlling cracks is studied.