TY - GEN
T1 - Experimental study on improving the frost heave of graded gravel on passenger-dedicated railway line
AU - Nie, Zhi Hong
AU - Liu, Yuan
AU - Wang, Xiang
PY - 2014
Y1 - 2014
N2 - Frost heave significantly affects the graded gravel used to construct passenger-dedicated railway lines. For safety reasons, such lines have strict demands on the amount of deformation that can occur to tracks. The aim of this study was to investigate the geotechnical properties of graded gravel that was grouted with slurry. After grouting, scanning electron microscopy showed that the slurry bound well to the gravel particles. With increasing iterations of freeze-thaw cycles, the frost heave ratio increased, but it did not change significantly after 20 freeze-thaw cycles. In addition, changes in the unconfined compression strength were also negligible after 20 freeze-thaw cycles, and they tended to stabilized after 10 dry-wet cycles. These results show that graded gravel samples stabilized with slurry exhibited high resistance to the effects of freeze-thaw cycles and dry-wet cycles. We concluded that slurry can be successfully used to improve frost heave associated with the graded gravel of passenger-dedicated railway line.
AB - Frost heave significantly affects the graded gravel used to construct passenger-dedicated railway lines. For safety reasons, such lines have strict demands on the amount of deformation that can occur to tracks. The aim of this study was to investigate the geotechnical properties of graded gravel that was grouted with slurry. After grouting, scanning electron microscopy showed that the slurry bound well to the gravel particles. With increasing iterations of freeze-thaw cycles, the frost heave ratio increased, but it did not change significantly after 20 freeze-thaw cycles. In addition, changes in the unconfined compression strength were also negligible after 20 freeze-thaw cycles, and they tended to stabilized after 10 dry-wet cycles. These results show that graded gravel samples stabilized with slurry exhibited high resistance to the effects of freeze-thaw cycles and dry-wet cycles. We concluded that slurry can be successfully used to improve frost heave associated with the graded gravel of passenger-dedicated railway line.
UR - http://www.scopus.com/inward/record.url?scp=84905845184&partnerID=8YFLogxK
U2 - 10.1061/9780784478509.010
DO - 10.1061/9780784478509.010
M3 - Conference article published in proceeding or book
AN - SCOPUS:84905845184
SN - 9780784478509
T3 - Geotechnical Special Publication
SP - 73
EP - 80
BT - Advances in Transportation Geotechnics and Materials for Sustainable Infrastructure - Selected Papers from the Proceedings of the Geo-Hubei 2014 International Conference on Sustainable Infrastructure
PB - American Society of Civil Engineers (ASCE)
T2 - Geo-Hubei 2014 International Conference on Sustainable Infrastructure: Advances in Transportation Geotechnics and Materials for Sustainable Infrastructure
Y2 - 20 July 2014 through 22 July 2014
ER -