A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effects of Plastic Properties on the Fluidization Behaviour of Subgrade Soil under Heavy Haul Rail Load
Recent studies indicate low to medium plastic soils can fluidize and spread over the track surface, i.e., mud pumping, although, the question on the influence of plastic parameters such as the plasticity index (PI) and fines content on mud pumping has not been well understood. This study therefore aims to investigate the role of plastic parameters on the subgrade instability through a series of field and laboratory studies. The site investigations show that all soils collected from mud pumping sites have PI smaller than 26 while poor drainage condition is found as a major factor causing subgrade fluidization. The laboratory study shows that the specimen experiences a redistribution of water content at an adverse loading which transforms the top portion of the specimen to a fluid-like state. Kaolin content significantly affects the cyclic response of subgrade soil as increasing this fraction to a reasonable degree can mitigate soil fluidization.
Effects of Plastic Properties on the Fluidization Behaviour of Subgrade Soil under Heavy Haul Rail Load
Recent studies indicate low to medium plastic soils can fluidize and spread over the track surface, i.e., mud pumping, although, the question on the influence of plastic parameters such as the plasticity index (PI) and fines content on mud pumping has not been well understood. This study therefore aims to investigate the role of plastic parameters on the subgrade instability through a series of field and laboratory studies. The site investigations show that all soils collected from mud pumping sites have PI smaller than 26 while poor drainage condition is found as a major factor causing subgrade fluidization. The laboratory study shows that the specimen experiences a redistribution of water content at an adverse loading which transforms the top portion of the specimen to a fluid-like state. Kaolin content significantly affects the cyclic response of subgrade soil as increasing this fraction to a reasonable degree can mitigate soil fluidization.
Effects of Plastic Properties on the Fluidization Behaviour of Subgrade Soil under Heavy Haul Rail Load
Nguyen, Thanh Trung (author) / Indraratna, Buddhima (author) / Rujikiatkamjorn, Cholachat (author) / Singh, Mandeep (author) / Korkitsuntornsan, Warantorn (author) / Novais Silva, Isabella (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 204-213
2022-03-17
Conference paper
Electronic Resource
English
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