Study On Deformation And Mechanical Properties Of Stabilized Soil With TG Curing Agent Subjected To Freezing And Thawing

TG curing agent is ionic reinforcement material.The advantages of this material are safe, no pollution,reducing the use of inorganic binders in the path construction projects,solving the problem of long distance transportation of building stone, cost reduction, saving resources,etc. In the seasonal frozen region, roads cannot be protected from repeated freeze-thaw cycles, in this paper, using TG curing agent, lime and soil as material,the deformation and mechanical properties of the reinforced soil were studied under the freezing and thawing action.First, determining the basic properties of soil, TG, curing agent and lime,including the soil of particle analysis and limited moisture content test, determining the classification of soil and to determine the optimum water content and maximum dry density, analyzing the curing principle of TG curing agent and lime, determining the effective calcium and magnesium content of lime. The reasonable mixture ratio of several materials was selected by compaction test and unconfined compression strength test. The mechanical properties of TG curing agent lime soil under freezing and thawing condition were studied by the test of unconfined compressive strength and compressive resilient modulus and splitting strength test. Analysis of freeze-thaw cycles, freeze-thaw cycle conditions, the degree of compaction and lime and curing agent content on unconfined compressive strength influence. Draw the stress-strain curve under the condition of different compaction degrees and different freeze-thaw cycles, analysis of variation characteristics curve. Study on the compressive modulus and splitting strength after freezing thawing after changes. The frost resistance of TG curing agent lime soil was evaluated. The deformation properties of TG curing agent lime soil under freezing and thawing condition were studied by the test of dry shrinkage test and temperature shrinkage test. The influences of the number of freeze-thaw cycles and the degree of compaction on the dry shrinkage strain and shrinkage coefficient were obtained, and the performance of temperature shrinkage strain and temperature shrinkage coefficient under different compaction conditions.