Sciences in Cold and Arid Regions ›› 2017, Vol. 9 ›› Issue (3): 297–306.doi: 10.3724/SP.J.1226.2017.00297

• ARTICLES • 上一篇    

Experimental investigation on static and dynamic resilient moduli of compacted fine soil

QiuBo Yan1, Feng Zhang2, KangWei Tang2, ShuJuan Wang1, Yan Liu1   

  1. 1. Jilin Provincial Transport Scientific Research Institute, Changchun, Jilin 130012, China;
    2. School of Transportation Science and Engineering, Harbin Institute of Technology, Heilongjiang, Harbin 150090, China
  • 收稿日期:2016-11-21 修回日期:2016-12-21 发布日期:2018-11-23
  • 通讯作者: Tang KangWei, KangWei Tang, Harbin Institute of Technology. No. 73, Huanghe Road, Harbin, Heilongjiang 150090, China. Tel: +86-451-86282120; E-mail: tangkangwei_hit@163.com E-mail:tangkangwei_hit@163.com
  • 基金资助:
    This research is supported by the National Key Basic Research Development Plan (2012CB026104),the National Natural Science Foundation of China (51408163,51578200 and 41430634).

Experimental investigation on static and dynamic resilient moduli of compacted fine soil

QiuBo Yan1, Feng Zhang2, KangWei Tang2, ShuJuan Wang1, Yan Liu1   

  1. 1. Jilin Provincial Transport Scientific Research Institute, Changchun, Jilin 130012, China;
    2. School of Transportation Science and Engineering, Harbin Institute of Technology, Heilongjiang, Harbin 150090, China
  • Received:2016-11-21 Revised:2016-12-21 Published:2018-11-23
  • Contact: Tang KangWei, KangWei Tang, Harbin Institute of Technology. No. 73, Huanghe Road, Harbin, Heilongjiang 150090, China. Tel: +86-451-86282120; E-mail: tangkangwei_hit@163.com E-mail:tangkangwei_hit@163.com
  • Supported by:
    This research is supported by the National Key Basic Research Development Plan (2012CB026104),the National Natural Science Foundation of China (51408163,51578200 and 41430634).

摘要: To investigate the static and dynamic resilient modulus of fine soil, and adapting to the new design code and maintenance system of highway subgrade in China, a series of static and dynamic tests were carried out according to the standard laboratory test methods (JTG E40-2007 and JTG D30-2015, respectively). The effects of initial water content, compactness and freeze-thaw cycles on the static and dynamic resilient moduli of fine soil were investigated and analyzed. Experimental test results show that with increasing water content, dry density and freeze-thaw cycles, the static moduli reduces about 10.2%~40.0%, 14.4%~45.5%, and 24.0%~50.3%, and dynamic moduli reduces about 10.9%~90.8%, 2.5%~38.4%, and 0.0%~46.0%, respectively. Then, the empirical mathematical relationship between static and dynamic resilient moduli was established under different water content, dry density and freeze-thaw cycles. The investigation results can be used to determine the dynamic modulus of fine soil by widely used static modulus, which could meet the requirement of adopting dynamic modulus index in new specification.

关键词: fine soil, static modulus, dynamic modulus, freeze-thaw cycle, mathematical relationship

Abstract: To investigate the static and dynamic resilient modulus of fine soil, and adapting to the new design code and maintenance system of highway subgrade in China, a series of static and dynamic tests were carried out according to the standard laboratory test methods (JTG E40-2007 and JTG D30-2015, respectively). The effects of initial water content, compactness and freeze-thaw cycles on the static and dynamic resilient moduli of fine soil were investigated and analyzed. Experimental test results show that with increasing water content, dry density and freeze-thaw cycles, the static moduli reduces about 10.2%~40.0%, 14.4%~45.5%, and 24.0%~50.3%, and dynamic moduli reduces about 10.9%~90.8%, 2.5%~38.4%, and 0.0%~46.0%, respectively. Then, the empirical mathematical relationship between static and dynamic resilient moduli was established under different water content, dry density and freeze-thaw cycles. The investigation results can be used to determine the dynamic modulus of fine soil by widely used static modulus, which could meet the requirement of adopting dynamic modulus index in new specification.

Key words: fine soil, static modulus, dynamic modulus, freeze-thaw cycle, mathematical relationship

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