Comparison Experiments on Relieving Differential Settlement of Subgrade by Graded Crushed Rock in Different Particle Sizes

Abstract:

By the self-made experimental device, the experiment research on the role of relieving differential settlement of subgrade on graded crushed rock in different particle sizes has conducted. The experiment has tested the stress of central, edge and corner of the slab when cavity is produced. The experiment results show that, the graded crushed rock is able to better correspond differential settlement deformation of the subgrade, the liquidity of the bulk particle can fill the cavity spaces. The stress in the slab increases with the addition of the cavity height and the loading. The graded crushed rock with different particles plays different roles on the relief effect of cavity. Generally speaking, the effect of the graded crushed rock in 31.5mm size is better than that of in 19mm size.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 3151-3156
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.3151
• Online since: November 2011
• Authors: Wei Liang, Bin Yang, Yun Liang Zhao, Yu Li, Xin Kun Wen
• Keywords: Differential Settlement of Subgrade, Experiment, Graded Crushed Rock

References

[1] Y. Li, Hu ruining. Causes for Differential Settlement of Subgrade and Its Treatment Methods[J]. Journal of Chongqing Jiaotong University, 2006, 25(B06): 85-88.

[2] Ministry of Communications of People's Republic of China. Specifications for Construction of Highway base (JTT 034-2000) [S] Beijing: China Communications Press, 2000: 17-21.

[3] Ministry of Communications of People's Republic of China. Design Specification for Highway Cement Concrete Pavement (JTG D40-2002) [S] Beijing: China Communications Press, 2002: 9-11.

[4] Lv lijian, Ning yingjie, Yao yihong. Causes for the Formation of Differential Settlement of Subgrade and Analysis on the Influence on the Crack of Pavement[J]. Road Engineering, 2008(2): 53-55.

[5] S. Rajesh， B.V.S. Viswanadham. Evaluation of geogrid as a reinforcement layer in clay based engineered barriers[J]. Applied Clay Science，2009, 46 (2): 156-160.

DOI: 10.1016/j.clay.2009.07.019

[6] Z. Wang, J. Cao, Wanglong, etc. Dynamic deformation characteristic of grading macadam mixture[J] China Journal of Highway and Transport, 2003, 16 (1): 22-26.

[7] Yuanjun, X. Huang. Resilient deformation behavior of unbound stone aggregates[J] Journal Of Chang'an University(Natural Science Edition), 2007, 27 (6): 29-33.