The Experts below are selected from a list of 1767 Experts worldwide ranked by ideXlab platform
Ningjun Jiang - One of the best experts on this subject based on the ideXlab platform.
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multi scale laboratory evaluation of the physical mechanical and microstructural properties of soft Highway subgrade soil stabilized with calcium carbide residue
Canadian Geotechnical Journal, 2016Co-Authors: Yanjun Du, Suksun Horpibulsuk, Ningjun Jiang, Arul ArulrajahAbstract:Calcium carbide residue (CCR) is an industrial by-product, stockpiles of which are rapidly accumulating worldwide. Highway Embankment construction has been identified as an avenue to consume huge quantities of CCR as an economical, less energy intensive, and environmentally friendly chemical additive for soil stabilization. Previous studies have investigated the mechanical behavior of soils stabilized by CCR or blends of CCR with other additives; however, interpretation of the macroscale geomechanical behavior of CCR-stabilized soft soils from a systematically microstructural observation and analysis is relatively unknown. This paper presents a multi-scale laboratory investigation on the physical, mechanical, and microstructural properties of CCR-stabilized clayey soils with comparison to quicklime-stabilized soils. Several series of tests were conducted to examine the Atterberg limits, particle-size distribution, compaction characteristics, unconfined compressive strength, California Bearing Ratio, and r...
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multi scale laboratory evaluation of the physical mechanical and microstructural properties of soft Highway subgrade soil stabilized with calcium carbide residue
Canadian Geotechnical Journal, 2016Co-Authors: Ningjun Jiang, Suksun Horpibulsuk, Songyu Liu, Mingli Wei, Arul ArulrajahAbstract:Calcium carbide residue (CCR) is an industrial by-product, stockpiles of which are rapidly accumulating worldwide. Highway Embankment construction has been identified as an avenue to consume huge q...
K Fei - One of the best experts on this subject based on the ideXlab platform.
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performance of a geogrid reinforced and pile supported Highway Embankment over soft clay case study
Journal of Geotechnical and Geoenvironmental Engineering, 2007Co-Authors: Hanlong Liu, K FeiAbstract:This paper describes a case history of a geogrid-reinforced and pile-supported (GRPS) Highway Embankment with a low area improvement ratio of 8.7%. Field monitored data from contact pressures acting on the pile and soil surfaces, pore-water pressures, settlements and lateral displacements are reported and discussed. The case history is backanalyzed by carrying out three-dimensional (3D) fully coupled finite-element analysis. The measured and computed results are compared and discussed. Based on the field observations of contact stresses and pore-water pressures and the numerical simulations of the Embankment construction, it is clear that there was a significant load transfer from the soil to the piles due to soil arching. The measured contact pressure acting on the pile was about 14 times higher than that acting on the soil located between the piles. This transfer greatly reduced excess positive pore water pressures induced in the soft silty clay. The measured excess pore water pressure ratio B¯ max in t...
Hanlong Liu - One of the best experts on this subject based on the ideXlab platform.
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grouted gravel column supported Highway Embankment over soft clay case study
Canadian Geotechnical Journal, 2015Co-Authors: Hanlong Liu, Gangqiang Kong, Jian Chu, Xuanming DingAbstract:In this paper, a simplified column construction method — the so-called grouted gravel column — and its application to construction of Embankments over soft ground are introduced. The construction m...
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performance of a geogrid reinforced and pile supported Highway Embankment over soft clay case study
Journal of Geotechnical and Geoenvironmental Engineering, 2007Co-Authors: Hanlong Liu, K FeiAbstract:This paper describes a case history of a geogrid-reinforced and pile-supported (GRPS) Highway Embankment with a low area improvement ratio of 8.7%. Field monitored data from contact pressures acting on the pile and soil surfaces, pore-water pressures, settlements and lateral displacements are reported and discussed. The case history is backanalyzed by carrying out three-dimensional (3D) fully coupled finite-element analysis. The measured and computed results are compared and discussed. Based on the field observations of contact stresses and pore-water pressures and the numerical simulations of the Embankment construction, it is clear that there was a significant load transfer from the soil to the piles due to soil arching. The measured contact pressure acting on the pile was about 14 times higher than that acting on the soil located between the piles. This transfer greatly reduced excess positive pore water pressures induced in the soft silty clay. The measured excess pore water pressure ratio B¯ max in t...
Arul Arulrajah - One of the best experts on this subject based on the ideXlab platform.
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multi scale laboratory evaluation of the physical mechanical and microstructural properties of soft Highway subgrade soil stabilized with calcium carbide residue
Canadian Geotechnical Journal, 2016Co-Authors: Yanjun Du, Suksun Horpibulsuk, Ningjun Jiang, Arul ArulrajahAbstract:Calcium carbide residue (CCR) is an industrial by-product, stockpiles of which are rapidly accumulating worldwide. Highway Embankment construction has been identified as an avenue to consume huge quantities of CCR as an economical, less energy intensive, and environmentally friendly chemical additive for soil stabilization. Previous studies have investigated the mechanical behavior of soils stabilized by CCR or blends of CCR with other additives; however, interpretation of the macroscale geomechanical behavior of CCR-stabilized soft soils from a systematically microstructural observation and analysis is relatively unknown. This paper presents a multi-scale laboratory investigation on the physical, mechanical, and microstructural properties of CCR-stabilized clayey soils with comparison to quicklime-stabilized soils. Several series of tests were conducted to examine the Atterberg limits, particle-size distribution, compaction characteristics, unconfined compressive strength, California Bearing Ratio, and r...
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multi scale laboratory evaluation of the physical mechanical and microstructural properties of soft Highway subgrade soil stabilized with calcium carbide residue
Canadian Geotechnical Journal, 2016Co-Authors: Ningjun Jiang, Suksun Horpibulsuk, Songyu Liu, Mingli Wei, Arul ArulrajahAbstract:Calcium carbide residue (CCR) is an industrial by-product, stockpiles of which are rapidly accumulating worldwide. Highway Embankment construction has been identified as an avenue to consume huge q...
Jared Mcginn - One of the best experts on this subject based on the ideXlab platform.
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design construction and performance of a Highway Embankment failure repaired with tire derived aggregate
Transportation Research Record, 2010Co-Authors: Bernie Mills, Jared McginnAbstract:In July 2006, a large Embankment failure occurred during construction of a four-lane divided Highway leading to the Canada-U.S. border crossing in St. Stephen, New Brunswick, Canada. The Highway Embankment was approximately 12.3 m in height, just short of the design height of 14 m, when it failed. The cause of the failure was attributed to the rapid rate of construction and the intensity of loading on low-strength foundation soils, consisting of up to 15 m of soft marine clay. The reconstruction effort used 1.4 million scrap tires to create the tire-derived aggregate (TDA) as lightweight fill. TDA was placed within the new Embankment, constructed over the site of the original failure. An important element to the design was the installation of geotechnical instrumentation, which allowed an observational approach to be taken during the construction process. This approach resulted in modifications to the original design throughout the process of reconstructing the TDA Embankment. This paper presents the resu...