Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology

doi:10.1139/cgj-2020-0008

	Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology
	Liu, Song-Yu 4; Cai, Guang-Hua 2,3; Du, Guang-Yin 5; Wang, Liang 5; Li, Jiang-Shan 1; Qian, Xing-Chen 5
刊名	CANADIAN GEOTECHNICAL JOURNAL
	2021
卷号	58 期号:1 页码:97-113
关键词	mass carbonation reactive magnesia soft soil field investigation engineering properties
ISSN号	0008-3674
DOI	10.1139/cgj-2020-0008
英文摘要	The innovative carbonation technique based on reactive MgO and CO2 has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical properties. However, there are to date limited investigations on the soft-soil field application of this technique. In this study, a field trial was conducted to ascertain the feasibility of the MgO mass carbonation technique in improving shallow soft-soil subgrades. A series of field tests, including temperature, dynamic cone penetrometer, and light-weight defiectometer tests, were undertaken. The results indicated that compared with uncar-bonated soil layers, there was two to three times increase in dynamic resilient moduli and soil resistances of carbonated MgO-admixed soils. The outcomes of this field investigation will contribute to the utilization of the combined stabilizer of MgO and CO2 and the mass carbonation technology in subgrade improvement.
资助项目	NSFC[41902286] ; NSFC[41972269] ; NSFC[41977241] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[18KJB560012] ; Youth Science and Technology Innovation Fund of Nanjing Forestry University[CX2018005] ; Science and Technology Project of Jiangsu Traffic Engineering Construction Bureau[2018T01] ; Open Fund for State Key Laboratory of Geotechnical Mechanics and Engineering[Z019026] ; Ministry of Housing and Urbanrural Development Science and Technology Project Plan[2018-K7-013]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	CANADIAN SCIENCE PUBLISHING
WOS记录号	WOS:000606493600007
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25573]
专题	中科院武汉岩土力学所
通讯作者	Cai, Guang-Hua
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.Southeast Univ, Nanjing 211189, Peoples R China 3.Nanjing Forestry Univ, Sch Civil Engn, Nanjing 210037, Peoples R China 4.Southeast Univ, Inst Geotech Engn, Jiangsu Key Lab Urban Underground Engn & Environm, Nanjing 211189, Peoples R China 5.Southeast Univ, Inst Geotech Engn, Nanjing 211189, Peoples R China
推荐引用方式 GB/T 7714	Liu, Song-Yu,Cai, Guang-Hua,Du, Guang-Yin,et al. Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology[J]. CANADIAN GEOTECHNICAL JOURNAL,2021,58(1):97-113.
APA	Liu, Song-Yu,Cai, Guang-Hua,Du, Guang-Yin,Wang, Liang,Li, Jiang-Shan,&Qian, Xing-Chen.(2021).Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology.CANADIAN GEOTECHNICAL JOURNAL,58(1),97-113.
MLA	Liu, Song-Yu,et al."Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology".CANADIAN GEOTECHNICAL JOURNAL 58.1(2021):97-113.