Research Of Road Performance Of Clayey Soil With Soil Stabilizer And Jute Fiber

The construction of Shenyang Dalian freeway(Shen Hai Expressway Liaoning section)in 1984 achieved a breakthrough in China's highway zero.By March 2017,the total mileage of China's expressways has reached 125373 kilometers,ranking first in the world.Soil is the foundation of roads,and is also one of the basic materials for road construction.Its performance is of vital importance to the service level and service life of roads.Soil solidifying agent is a new kind of environment-friendly additive.On the one hand,the curing agent can improve the properties of soil,on the other hand,it can be modified and strengthened for the special soil such as loess and expansive soil.Therefore,the curing agent has attracted more and more attention from the road researchers.In addition,the application of fiber in soil reinforcement is gradually put on the agenda.In order to study the effect of fiber and curing agent on soil properties,this paper mainly did the following work:(1)Test and analysis of the properties of the raw materials,and through the literature to understand the classification and curing mechanism of curing agents,fibers.(2)In order to determine the optimal fiber content and length,a three-factor threelevel orthogonal test was designed with the fiber length,content and moisture content as variables,and the triaxial test results of plain soil and fiber soil were compared.(3)Using unconfined compressive strength and splitting tensile strength as evaluation indicators,comparative analysis of the increase in strength of soil after incorporation of fiber,cement,and curing agent was performed.In addition,the strength of test pieces at different ages was measured.The relationship between soil compressive strength and tensile strength and age is obtained.(4)The water stability and freeze-thaw resistance of solidified soil and fiber solidified soil were studied experimentally and compared.This paper mainly studies the reinforcing effect of fiber and curing agent on the surrounding soil of Changchun.It has the practical significance of research and can provide some guidance and help for the construction of road subgrade in the future.