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随着我国沙漠地区公路建设的不断发展,经常会使用不同含泥量风积砂填筑路基。但是,不同含泥量的风积砂是否能用做公路地基填料?风积砂含泥量的多少对路基的影响如何?这都与不同含泥量风积砂的强度特性有关。为准确评价不同含泥量风积砂的强度特性,确定适合做公路路基填料的风积砂含泥量,本文结合实际工程,通过资料调研、工程实践、室内试验以及理论分析,对不同含泥量风积砂的强度特性(直剪试验、室内回弹模量试验、CBR试验)进行了试验研究,试验结果得出风积砂的含泥量在15%左右时,其强度特性好,适合做公路路基填料,这对沙漠地区的公路建设有一定的参考意义和经济价值。
With the continuous development of highway construction in desert areas of our country, it is common to fill the roadbed with aeolian sand with different clay content. However, whether the aeolian sand with different clay content can be used as the road foundation filler, how is the aeolian sand content affect the roadbed, which is related to the strength characteristics of aeolian sand with different clay content? In order to accurately evaluate the strength characteristics of aeolian sand with different clay content and to determine the aeolian sand content that is suitable for highway subgrade fill, this paper, based on the actual project, through data investigation, engineering practice, laboratory test and theoretical analysis, The strength characteristics of aeolian sand (direct shear test, indoor resilience modulus test, CBR test) were studied. The results showed that when the clay content of aeolian sand was about 15%, its strength characteristics were good and suitable As a highway subgrade filler, this has certain reference value and economic value to highway construction in the desert area.