Dredger fill sand has small cohesive force, inadequate engineering performance, and is vulnerable to rainfall erosion which leads to subgrade destruction. Used as roadbed filling material, dredger fill sand should be reinforced by inorganic binder. Triaxial tests were carried out on dredger fill sand specimens stabilized with lime and cement to research their strength properties and stress-strain regularity. Test results show that dry density, curing period, and inorganic binder content are positive correlated factors affecting the strength of dredger fill sand; while the delayed time of compaction and the water content are negatively correlated factors. As for salinity, with 3% as a dividing line, when less than 3%, the strength is increased with the increase of salt content; when larger than 3%, the strength decreases with the increase of salt content.
YU Guo-xuan
,
LI Shu-e
,
JIN Ming-dong
,
CHEN Zhi-ming
,
QU Jian
. Triaxial Test on Dredger Fill Sand Stabilized with Inorganic Binder[J]. Journal of Changjiang River Scientific Research Institute, 2014
, 31(2)
: 68
-72
.
DOI: 10.3969/j.issn.1001-5485.2014.02.014
[1] 刘 莹,王 清.水泥加固吹填土试验研究[J].公路交通科技,2006,23(6): 45-48.(LIU Ying, WANG Qing. Consolidation Test and Study on the Treatment of Dredger Fill with Cement[J]. Journal of Highway and Transportation Research and Development,2006,23(6):45-48.(in Chinese))
[2] 刘 科,沈 扬,刘汉龙.水泥-生石灰固化吹填土无侧限抗压强度试验研究[J]. 土木工程与管理学报,2012,29(3): 94-98.(LIU Ke, SHEN Yang, LIU Han-long. Experimental Study on Unconfined Compressive Strength of Hydraulic Fill Consolidated by Adding Cement and Lime[J]. Journal of Civil Engineering and Management, 2012,29(3) : 94-98.(in Chinese))
[3] TOMOHISA S, SAWA K, NAITOH N. Hedoro Hardening Treatment by Industrial Wastes [J]. Journal of the Society of Materials Science Japan,1995,44(503):1023-1026
[4] ZALIHE N, EMIN G. Improvement of Calcareous Expansive Soils in Semi-arid Environments[J]. Journal of Arid Environments, 2001,47(4):453-463.
[5] 朱志铎,刘松玉,邵光辉,等.粉土及其稳定土的三轴试验研究[J]. 土木工程与管理学报,2012,26(12): 1967-1971.(ZHU Zhi-duo, LIU Song-yu, SHAO Guang-hui, et al. Research on Silts and Silts Treated with Stabilizers by Triaxial Shear Tests[J]. Rock and Soil Mechanics, 2012, 26(12): 1967-1971.(in Chinese))
[6] JTG E40—2007,公路土工试验规程 [S].(JTG E40—2007, Specifications for Highway Geotechnical Test for Highway Engineering[S].(in Chinese))
[7] 徐 剑.击实功与延迟击实对石灰处治土的影响[J] .国外公路,1999,19(4):27-32.(XU Jian. Effect of Compaction Power and Delay Time of Compaction on Soil Stablized by Lime [J]. Foreign Highway, 1999,19(4): 27-32.(in Chinese))
[8] 储诚富,刘松玉,邓勇峰,等.含盐量对水泥土强度影响的室内试验研究[J] .工程地质学报,2007,15(1):139-143.(CHU Cheng-fu, LIU Song-yu, DENG Yong-feng, et al. The Threshold of Salt Contents on Strength of Cement-Mixed Clays: A Finding of Laboratory Tests[J]. Journal of Engineering Geology, 2007,15(1):139-143.(in Chinese))
