在回填土壤的应力作用下,管道在3∶00 ~ 9∶00时钟位置的石油沥青防腐层容易出现剥离并屏蔽阴极保护,导致管体腐蚀。
Due to the stress of backfilled soil, the asphalt coating at 3:00-9:00 (clock position) is easily disbonding and the CP is shielded, which results in the pipe body corrosion.
兴建过程中,建商会排干湿地,将沥青、混凝土、房屋建材覆盖在原本生长植物的土壤上。
In the process, construction companies are draining wetlands and covering formerly vegetated soils with asphalt, concrete and housing materials.
供应孔洞挖掘机,沥青路面压实机,土壤压实机。
提出用水泥以及沥青大规模地覆盖土壤对于土壤,特别是土壤表层的微生物种群结构将会造成改变的问题。
A problem is coating the earth with cement or bitumen on a large scale that would change the horde structural of the microbe in soil particularly in the surface layer of soil.
提出用水泥以及沥青大规模地覆盖土壤对于土壤,特别是土壤表层的微生物种群结构将会造成改变的问题。
A problem is coating the earth with cement or bitumen on a large scale that would change the horde structural of the microbe in soil particularly in the surface layer of soil.
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