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Effect comparison of geosynthetics and lime on improving the bearing capacity of unpaved road subgrade

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Document pages: 8 pages

Abstract: Therefore, many soil improvement methods have been developed to improve the bearing capacity of road superstructure to be built on soft clay subgrade soil, reduce settlement, and improve other strength specifications (CBR, value, etc.). In this paper, lime stabilization and geosynthetics (geocell + geotextile) reinforcement of cohesive road base soil with high water content are studied, and two different reinforcement methods are compared. Therefore, after using lime to improve in the proportion of 3 , 6 and 12 , the plate load test of cohesive soil with high water content is carried out. The optimal water content is increased by 10 , including geotextile reinforcement, geocell reinforcement, geosynthetics reinforcement and geosynthetics reinforcementthetics reinforcement + lime stabilization at various rates. It was understood that these improvement methods will not yield sufficient results on clayey soils with high water content on their own, and method of improvement with lime and then reinforcement with geosynthetics yields better results on these types of soils. Only one improvement state among ten different states examined in this study gave the sufficient results for the soil to be used for unpaved roads.

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