The Applied Research Of Curing Agent Consolidation Soil Base In Seasonal Permafrost Zone

With the development of highways, road building materials will gradually scarce natural resources, as road and the over-exploitation, it will be seriously damaged the ecological environment. Some road construction material (such as lime, cement) production, transport and storage will pollute the environment, waste of energy, so that road construction costs continue to rise. So how can we give full play to the limited use of local and soil resources, destruction and how to resolve the contradiction between development and rational use of natural resources and protecting the ecology and environment, we are facing a major issue.Soil stabilizer is a very important road construction material, compared with traditional road construction materials, curing agents or curing the grassroots of the roadbed soil curing speed, high strength, impermeability, and road performance, and less pollution, construction Short cycle and integrated low cost advantages. Road on the 1st of soil curing agent is a soil stabilizer, it middle ground on the 1st of curing agent lime, clay soil mixed with good curing effect. Road on the 1st of soil curing agent, lime, clay interaction among and promote each other, can form a dense, water stability, high strength and durability of the structure, the middle ground curing agent on the 1st of cement, clay soil also has mixed Curing a better role. Road on the 1st of soil curing agent, cement, clay interaction among and promote each other, can form a more compact than lime, water stability, high strength and a more stable structure.This paper relies on the Ministry of Science and Technology joint research project "Consolidation of soil primary application of the road" by the following conclusions:1. Depth to the system of indoor and outdoor experiments, observation-based, application of soil cement curing agent and a small amount of fine-grained soil material consolidation of the road as the primary research and the results achieved at home and abroad is the first, "Consolidation of soil" The proposed concept is the first time at home and abroad.2. Seasonally frozen in the first combination, the system on the consolidation of soil as a road base materials and the shrinkage temperature shrinkage, freeze-thaw stability and made a bending Rafah (Split) strength, resilience compression mode Volume, and other design parameters for the structural composition of the road provided an important basis for the design.3. Faces use of scanning electron microscopy, X-ray diffraction, and thermal and differential thermal analysis and other advanced technical methods to study soil consolidation of the major internal changes in mineral content, crystal morphology of the changes and micro-structure changes. Through the consolidation of the first curing mechanism of soil analysis, evaluation of soil road base materials consolidation of stability and durability, so that the project on more complete.4. On the whole of the test tank and a large number of pilot project based on the first systematic summary of the consolidation of the soil surface grass-roots construction technology, and the preparation of the "consolidation of soil surface grass-roots technical guidelines (Trial)", for the research results In the absence of conventional materials in road construction to promote practical applications of the technology basis and guiding methods.5. The direct use of soil on the 1st Road curing agent consolidation soil, soil particles can more closely, strong and compressive strength have improved, but the bulk of the test showed that water. In this research, by optimizing the ratio, explore Road on the 1st curing agent and a small amount of cement materials (lime, cement, etc.) consolidation of fine-grained soil, soil solution as a single road curing the grass-roots water stability issues.