Study On The Application Technology Of Roadpacker Solidified Limestone Soil

Roadpacker plus is a type of liquid cation-exchanger made from Canada. The electric double layer of the soil surface can be destroyed by the intense ion. Therefore, the soil surface's properties are changed fundamentally, and the soil changes to hydrophobic. Under the pressure, the soil's strength begins to format and the soil has the good water resisting property. So the Roadpacker plus can accelerate the stabilization and strength of soil.Choose different types of representive soil including silt, silty clay, clay and highly plastic clay in Shandong province. The strength ,wanter stability, frost resistence, permeability, health preserving and environmental asessment of Roadpacker solidified limestone soil are reasearched. Take unconfined compressive strength of 7days, 14days, 28days and 90days as assessing index, and consider other indexs such as cation exchange capacity, CBR and modulus of resilience etc at the same time. Analyze the influence regularity of Roadpacker plus and lime to the strength of Roadpacker solidified limestone soil, and offer the proper mix design of different types of Roadpacker solidified limestone soil.Reasearch the water stability and frost resistence of Roadpacker solidified limestone soil through experiments, which include the permeability contrast test of limestone soil and Roadpacker solidified limestone soil, the freeze-thaw contrast test of lime-flyash stabilized soil, limestone soil and Roadpacker solidified limestone soil, and the 7days ,6+4days clavage strength test. Reasearch the dry shrinkage and temperature shrinkage and health preserving of Roadpacker solidified limestone soil through outside testing block using sprinking and covering as different health preserving ways.The microstructure's electric mirror and mineral component anlysis of 28 days' Roadpacker solidified limestone soil are done. And through experiments analyze its element and mineral component; through the anlysis of element, compound and total salt evalute the experimental influence of Roadpacker solidified limestone soil. The study indicates that Roadpacker plus is proper to solidify silty clay(IP≥12), clay and highly plastic clay; the early strength of Roadpacker solidified limestone soil increases more quickly; it has good dry and temperature shrinkage resistence and water stability; especially it has better ductility and crack resistence are better than inoganic binder stabilized soil, also it has the function to reduce the heavy metal in soil.The research offers the design standards of the Roadpacker solidified limestone soil (different types of soil) , the proper ratio of mixture coverage, and the proper way of health preserving. As an environment protection new material, the Roadpacker solidified limestone soil can be used as the subbase of superhighway or first class highway, and can be used as the base course of second-class road or lower grade road, specially of the country road. T...