Effect of Vibrating Load on Grain Size Distribution of Crushed Rock Layer

Abstract:

For the construction of the proposed Qinghai-Tibet Express Highway in warm and ice-rich permafrost regions, it will be necessary to utilize the new technique of cooling the ground temperature by the coarsely crushed rock layer with a low fines content, instead of the traditional measures taken to increase simply thermal resistances, so as to protect from damage to highway embankment due to thaw settlement. The vibrating loads such as wheel load and tamping load may cause the breakage and abrasion of the matrix grains in the coarsely crushed rock layer. This results in decreasing of grain size and increasing of fines content in the crushed rock layer, thus decreasing the porosity of crushed rock layer. The smaller porosity of crushed rock layer may weaken the cooling effect of buoyancy-driven natural convection of the pore air in the crushed rock layer of the highway embankment, thus resulting in instability and failure of the embankment structure in permafrost regions. Under these conditions, the influence of vibrating load on the grain size distribution of the coarsely crushed rock layer has to be investigated experimentally. In the present study, laboratory experiments on the grain size variation of the coarsely crushed rock layer under vertically vibrating loads were carried out. The test results show that the vibrating load can cause the breakage and abrasion of the matrix grains in the coarsely crushed rock layer and the shapes of coarely crushed rock grain tend to be non-angular.

• Periodical: Advanced Materials Research (Volumes 168-170)
• Pages: 663-668
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.168-170.663
• Online since: December 2010
• Authors: Li Jun Yang, Wen Hui Bai, Bin Xiang Sun, Shuang Jie Wang, Jin Zhao Zhang
• Keywords: Crushed Rock Layer, Grain Size, Road Engineering, Vibrating Load

References

[1] H.J. Jin, Z. Wei, S.L. Wang, Q.H. Yu, L.Z. Lu, Q.B. Wu and Y.J. Ji: Eng. Geol. Vol. 101(3-4) (2008), p.96.

[2] G.D. Cheng, Y.M. Lai, Z.Z. Sun and F. Jiang: Permafrost Periglac. Vol. 18(2) (2007), p.151.

[3] G.D. Cheng, Z.Z. Sun and F.J. Niu: Cold Reg. Sci. Technol. Vol. 53 (3) (2008), p.241.

[4] A.S. Jørgensen, G. Doré, E. Voyer, Y. Chataigner and L. Gosselin: Cold Reg. Sci. Technol. Vol. 53 (2) (2008), p.179.

[5] T.T. Zhang, H.W. Baker, G.D. Cheng and Q.B. Wu: Cold Reg. Sci. Technol. Vol. 53 (3) (2008), p.229.

[6] Y. Chataigner, L. Gosselin and G. Doré: Int. J. Therm. Sci. Vol. 48 (6) (2009), p.1151.

[7] M. Lebeau and J.M. Konrad: Comput. Geotech. Vol. 36 (3) (2009), p.435.

[8] B.X. Sun, X.Z. Xu, Y.M. Lai, D.Q. Li, S.J. Wang and J.Z. Zhang: Cold Reg. Sci. Technol. Vol. 38 (2-3) (2004), p.219.

[9] B.X. Sun, X.Z. Xu, Y.M. Lai and M.X. Feng: Cold Reg. Sci. Technol. Vol. 42(2) (2005), p.120.

[10] B.X. Sun, L.J. Yang and X.Z. Xu: Cold Reg. Sci. Technol. Vol. 48(3) (2007), p.218.

[11] B.X. Sun, L.J. Yang, Q. Liu, W. Wang and X.Z. Xu: Cold Reg. Sci. Technol. Vol. 57(2-3) (2009), p.131.

[12] B.X. Sun, L.J. Yang, Q. Liu and X.Z. Xu: Eng. Geol. Vol. 114(3-4) (2010), p.181.

[13] S. Saboundjian and D.J. Goering: Transport. Res. Rec. Vol. 1821(1) (2003), p.20.

[14] D.J. Goering, A. Instanes and S. Knudsen, in: Convective heat transfer in railway embankment ballast, edited by J.F. Thimus, volume 1 of Proceedings of the International Symposium on Ground Freezing and Frost Action Soils, p.31, A.A. Balkema Publishers (2000).

DOI: 10.1201/9781003078654-7

[15] M.Y. Zhang, Y.M. Lai, W.B. Yu and Z.J. Huang: Cold Reg. Sci. Technol. Vol. 48 (3) (2007), p.232.

[16] S.M. Springman and L.U. Arenson, in: Recent advances in permafrost geotechnics, edited by D.L. Kane and K.M. Hinkel, volume 2 of Proceedings of the Ninth International Conference on Permafrost, Part VII, p.1685, University of Alaska Fairbanks (2008).

[17] L.U. Arenson, J.F. Chen, H. -N. Pham and D.C. Sego, in: Laboratory investigations on air convection in porous media, volume 3 of Proceedings of the 60th Canadian Geotechnical Conference and 8th Joint CGS/IAH-CNC Groundwater Conference, p.1836, OttawaGeo2007 Organizing Committee (2007).

[18] L.U. Arenson, H. -N. Pham, R. Klassen and D.C. Sego, in: Heat convection in coarse waste rock piles, volume 3 of Proceedings of the 60th Canadian Geotechnical Conference and 8th Joint CGS /IAH-CNC Groundwater Conference, p.1500, OttawaGeo2007 Organizing Committee (2007).

[19] P. He, Z. Zhang, G.D. Cheng and H. Bing: Cold Reg. Sci. Technol. Vol. 47 (3) (2007), p.271.

[20] S.L. Ma, L. Wang and Z.R. Wang: China J. Highway Transport Vol. 14(1) (2001), p.5 (In Chinese).

[21] C.B. Zhang, Z.Y. Deng, L.T. Gao, K.X. Liu and Z.Y. Zhang: Chinese J. Rock Mech. Eng. Vol. 23 (1) (2004), p.95 (In Chinese).

[22] A. Nurmikolu: Degradation and Frost Susceptibility of Crushed Rock Aggregates Used in Structural Layers of Railway Track (Tampere University of Technology Publication, Finland 2005).