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水分的影响,评价罚款内容和可塑性在填充材料(G3)用于长跑训练在坦桑尼亚研究区域姆地区

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坦桑尼亚长跑训练建设活动必须遵循标准规范的建立指导方针和路面材料设计手册的建立工作。填充图层的建设需要的材料构成CBR等于或超过3%,最低90%的压实和最大膨胀指数的2%。层次和可塑性测试期间无视属性分类。这种情况导致了土壤水敏感性高的使用在建设由于缺乏控制的可塑性和罚款的百分比含量。坦桑尼亚由三个气候区域的干燥,温和、湿润;建立指导方针已经省略了气候带的部门分类填充材料的要求。研究评估罚款内容的影响,填充材料塑性和水分变化已经进行。调查进行的测试由土壤标本有罚款的内容比例为5%,10%,45%,60%和80%抽样从姆地区。每个样本进行了三个气候区而干燥,温和和湿OMC的75%,分别为OMC OMC的100%和125%。通过弹性模量的影响研究(Mr)和力量(CBR)参数。 The laboratory results and analysis revealed that fines content and plasticity are detrimental to the performance of fill layer. CBR is inversely proportional to the fines content and PI. The Mr values are increased when the fines content increases up to optimal content of fines, and the soil structure with most fined grains has poor performance when exposed to the wet condition. The findings might have a great implication in the roadwork construction industry in Tanzania and other countries with similar characteristics. For instance, the ministry of work might utilize the findings by adding the fine content and plasticity limit. Roadwork construction specification urged to include the limit of fines content and plasticity. Also, the classification must be separated based on climatic zone. The minimum compaction effort must be improved from 90% to 93% together with CBR value from 3% to 5%.

约瑟夫·斯蒂芬•Gimonge Siya Rimoy

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