Shear strength and durability against wetting and drying cycles of lime-stabilised laterite soil as subgrade

被引:16
作者
Razali, Roslizayati [1 ,3 ]
Rashid, Ahmad Safuan A. [1 ,2 ]
Lat, Diana Che [3 ]
Horpibulsuk, Suksun [4 ,5 ,6 ]
Roshan, Mohammad Jawed [7 ]
Rahman, Noor Shazreen A. [3 ]
Rizal, Nurin Hannah Ahmad [1 ]
机构
[1] Univ Teknol Malaysia, Fac Civil Engn, Dept Geotech & Transportat, Johor Baharu 81310, Malaysia
[2] Univ Teknol Malaysia, Ctr Trop Geoengn, Johor Baharu 81310, Malaysia
[3] Univ Teknol MARA UiTM Cawangan Johor, Coll Engn, Sch Civil Engn, Kampus Pasir Gudang, Johor Baharu, Malaysia
[4] Suranaree Univ Technol, Sch Civil Engn, Nakhon Ratchasima 30000, Thailand
[5] Suranaree Univ Technol, Ctr Excellence Innovat Sustainable Infrasturct Dev, Nakhon Ratchasima 30000, Thailand
[6] Royal Soc Thailand, Acad Sci, Bangkok 10300, Thailand
[7] Univ Minho, Dept Civil Engn, ISISE, Campus Azurim, P-4800058 Guimaraes, Portugal
关键词
Laterite soil; Lime; UCS; Durability; CU triaxial test; Microstructural analysis; SILTY SOIL; MICROSTRUCTURE; CEMENT; EVOLUTION; BEHAVIOR; ASH;
D O I
10.1016/j.pce.2023.103479
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Laterite soil is commonly used as a fill or pavement material. However, it tends to lose its natural bonding and experiences large deformation when subjected to cyclic rainy (wet) and hot (dry) seasons. This leads to cracking and deflection of road pavement. It has long been known that lime stabilisation can improve the engineering properties of laterite soils. Unconfined Compressive Strength (UCS) tests at different curing periods (0, 3, 7, 14, and 28 days) were conducted with various percentages of lime (3%, 5%, 7%, and 9%). The durability of stabilised soil against wet and dry cycles was also evaluated. In addition, the variation of shear strength parameters during the Consolidated Undrained (CU) triaxial test under different confining pressures has been presented. Microstructural analyses showed an increased soil strength due to the formation of calcium silicate hydrate (CSH) and calcium aluminate hydrate (CAH).
引用
收藏
页数:18
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