大体积混凝土防裂探讨

大体积混凝土开裂后，其性能与原状混凝土性能相差很大，尤其是对耐久性（渗透性）的影响更大，而混凝土渗透反过来又会加速和促使混凝土的进一步恶化，严重影响结构的长期安全和耐久运行，而裂缝大多又是在早期产生的，因此，探讨裂缝产生的原因和防止裂缝的出现就显得格外重要，通过对大体积混凝土裂缝产生的原因和类型的论述，从各个环节提出了预防裂缝的综合措施。

Discussions on the crack control of massive concrete

After the cracking of massive concrete, its properties are greatly different from that of original concrete, especially in its durability (permeability). But the permeability of concrete can accelerate and promote the worsening of concrete so that it can greatly affect the long term safety and operation of the whole structure. Because the most of cracks occur in early stage, it is very important to find out the causes of crack occurrence and its control countermeasures. This paper discusses the causes and types of crack occurrence of massive concrete and puts forward the comprehensive measures of crack control in different aspects.