Effect of Lime Stabilization on Vertical Deformation of Laterite Halmahera Soil

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Saing, Zubair^1 ; Djainal, Herry^1

Civil Engineering Department, Engineering Faculty, Universitas Muhammadiyah Maluku Utara, Ternate, Indonesia^1

关键词: Laboratory testing;    Lime stabilization;    Maximum dry density;    Physical model testing;    Soil characteristics;    Standard Proctor test;    Standard requirements;    Vertical deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012071/pdf
DOI  :  10.1088/1755-1315/140/1/012071

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, the study was conducted to determine the lime effect on vertical deformation of road base physical model of laterite Halmahera soil. The samples of laterite soil were obtained from Halmahera Island, North Maluku Province, Indonesia. Soil characteristics were obtained from laboratory testing, according to American Standard for Testing and Materials (ASTM), consists of physical, mechanical, minerals, and chemical. The base layer of physical model testing with the dimension; 2m of length, 2m of width, and 1.5m of height. The addition of lime with variations of 3, 5, 7, an 10%, based on maximum dry density of standard Proctor test results and cured for 28 days. The model of lime treated laterite Halmahera soil with 0,1m thickness placed on subgrade layer with 1,5m thickness. Furthermore, the physical model was given static vertical loading. Some dial gauge is placed on the lime treated soil surface with distance interval 20cm, to read the vertical deformation that occurs during loading. The experimentals data was analyzed and validated with numerical analysis using finite element method. The results showed that the vertical deformation reduced significantly on 10% lime content (three times less than untreated soil), and qualify for maximum deflection (standard requirement L/240) on 7-10% lime content.