Application Study Of Soil Hardener In Road Case And Subgrade Treatment

The road groundsill of A320 aero bus of AIRBUS overall assemblage engineering in Binhai is soft soil. If the roadbed couldn't bear the upside load, the roadbed would have subsided and the groundsill would have been destroyed when the road is open to traffic. The application of soil hardener can guarantee the roadbed stable, enhance intensities of the ground and modules of deformation, in order to bearing the upside load. Through the analysis on the laboratory testing results of cement and calcareousness soil for projects, such as the relationships between the unconfined compression strength and the water content of soil, the compactness, the ratio of water cement and calcareousness, the cement content and the age of the piles are studied. We have confirmed the construction project and control target that guarantee construction quality. When added 4 percents calcareousness and soil hardener, if the compactness greater than 90 percents, the unconfined compression strength can reach 0.80MPa. When added 2 percents cement, 3 percents calcareousness and soil hardener, if the compactness greater than 95.5 percents, the unconfined compression strength can reach 1.50MPa. When added 3 percents cement, 3 percents calcareousness and soil hardener, if the compactness greater than 97.6 percents, the unconfined compression strength can reach 2.50MPa.The curve between unconfined compression strength and compactness that summarized from laboratory test can be served as reference on construction quality control.