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| Experimental study on compaction property of different sized ground earth fill foundation |
| 1.Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, Shandong 250061, China; 2.Shandong University of Science and Technology, Qingdao, Shandong 266510, China; 3.School of Civil Engineering, Shandong University, Jinan, Shandong 250061, China) |
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Abstract According to the compaction features of filledin ground in highroad, dry weight density curve was obtained through the indoor compaction test under the work of resistance function and the different gradation silty soil or the clay. The compaction features were presented under different graduations of silt soil or clay soil. The relationship between the compactness, the void ratio, the air volume rate, and the degree of saturation was obtained. Furthermore, based on the microscopic structure analysis, the influence of compactness on the earth fill microscopic structure was discussed. The test results indicate that in the different gradations of silty soil or the clay, there is one optimum compaction work. The maximum dry density is obtained under the optimum compaction work. The compression feature of clay can be changed by mixing the coarse particles, but that of silty soil can not be changed effectively. In the compaction process, with the increase of compactness, the clay grains can fill the pore spaces fully, but the silty soil can not.
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2011, Vol. 32 
