同时介绍防止灰缝鼓起、裂缝、勾缝不密实的防治措施等。
Furthermore, the prevention measures for blowing up of mortar joint, crack and no dense joint are introduced.
衬砌背后回填不密实层和空洞厚度检测值的误差范围与天线密贴衬砌的情况一致。
The deviation ranges of uncompacted backfill and cavity thicknesses behind the lining agree with those when the antenna closes up to the lining specimen surface.
混凝土结构内部若存在不密实区或空洞等缺陷，必然会严重影响结构的承载能力和耐久性。
If there are lacunas or holes in concrete structure, it will affect the supportability and endurance of concrete structure seriously.
混凝土结构内部若存在不密实区或空洞等缺陷，必然会严重影响结构的承载能力和耐久性。
If there are lacunas or holes in concrete structure, it will affect the supportability and endurance of concrete structure seriously.
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