坦桑尼亚珊瑚土回填料试验的中英标准对比

坦桑尼亚某码头工程后方堆场采用吹填成陆,主要用于暂存轻型小汽车,采用珊瑚土作为基层回填料。通过对珊瑚土、珊瑚石以及珊瑚石添加水泥等3种回填料的室内泡水加州承载比(CBR)试验、现场CBR及压实度试验以及中英标准对比分析,并总结其规律。结果表明,采用英标设计的承载力要求较低的堆场,可以采用掺黏土的珊瑚土作为基层;珊瑚土在掺一定量的黏土后方可满足设计压实度要求下的室内泡水CBR值;珊瑚土回填料因其孔隙率大、强度偏低、对于轻型集装箱堆场能满足要求,重箱堆场则须另做调研。

Comparison of Chinese and British standards for Tanzania coral back filler test

The stack yard of a terminal project in Tanzania uses blown-filled land,mainly for temporary storage of light cars,and applies coral soil as the base back filler.We carry out the comparative analysis of Chinese and British standards of water CBR(California bearing ration)test,on-site CBR and compaction test of the back fillers,such as coral soil,coral stone and coral stone adding cement,and summarize their rules.The results show that for stack yards with lower bearing capacity requirements designed by British standard,the coral soil mixed with clay can be used as the base layer.The coral soil mixed with a certain amount of clay can meet the indoor water CBR value under the design compaction requirements.The coral soil back filler can meet the requirements for light container yards due to its high porosity and low strength,while heavy container yards must be investigated separately.