湿陷性黄土地基工程事故的实例分析

The mix proportion design of mass concrete in sewage treatment engineering

受单位委托 ,就潞安矿区某办公楼地基基础下沉、局部墙体开裂等事故 ,查明了该楼场地地基土的岩土工程特性 ,准确评估了其地基的承载能力和变形特征。用科学的方法作了进一步的分析与论证 ,并指出造成基础下沉的主要原因 ,提出了正确处理该事故的意见和方法 ,以期业内同行参考。

The problem that how to ensure the stability of mass concrete is discussed. At the same time the damage of secondary ettringite reaction is analyzed and the technology of using flyash and air entrained retarded high efficient water reducing agent are introduced to prevent shrinkage and thermal cracks and meet the demand of impermeability and flow property. The correct method that ensures the concrete's continuous pouring is elaborated. At last several technical measures are applied to study the mix proportion design of mass concrete.