1 AIT Asian Institute of Technology

Effects of lime on strength and compressibility characteristics of soft clay

AuthorYang, Cheng-wen
Call NumberAIT Thesis no.GT-87-01
Subject(s)Soil mechanics
Soil consolidation test

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementThesis ; no. GT-87-01
AbstractSix series of consolidated undrained triaxial compression CCIU> tests were carried out on lime - treated clays after one month curing period. Of particular interest were to determine the effects of lime content and effective pre-shear consolidation pressure on the triaxial strength characteristics of lime-treated Soft Bangkok Clay. Lime contents of 2. 5 to 15 % and effective pre - shear consolidation pressures ranging from 5 to 60 t/m2 were used in the study. The results of CIU tests show that the strength of treated clay is bi - linear depending on the effective pre - shear consolidation pressure. The strength increases with increasing pre-shear consolidation pressure. Moreover, the relationship of pore pressure response and effective pre-shear consolidation pressure is linear. The strengths of 5 to 15 % lime contents are more or less same, while 2. 5 % lime content appears not sufficient to improve the strength of Soft Bangkok Clay. However, the effect of lime treatment is not appreciable on the pore pressure response. The results of Oedometer consolidation tests show that lime treatment with lime contents of 5 to 15 % improves the consolidation characteristics of soft clay; lime content of 2. 5 % is not effective . Lime treatment with 5 to 15 % lime contents causes an increase in preconsolidation pressure C 0-vm> and coefficient of consolidation C cv>, and a decrease in compression index ยท A lime content of 5 % was found to be sufficient to cause similar improvement to the consolidation properties when compared with higher lime contents. Unconfined compression tests were also carried out to determine the strength gain with time due to lime treatment. Results show that the strength does not increase much within the first month; but after 2 months, lime contents of 5 to 15 % result to strength gain of about 10 times the strength of untreated clay. Also, unconfined compression tests show that 5 to 10 % lime contents would be enough to cause appreciable strength gain.
Year1988
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. GT-87-01
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSGeotechnical and Transportation Engineering (GT)
Chairperson(s)Balasubramaniam, A.S.
Examination Committee(s)Rantucci, Giovanni ;Kuwano, Jiro
Scholarship Donor(s)Ret - Ser Engineering Agency, R. 0. C;
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1988


Usage Metrics
View Detail0
Read PDF0
Download PDF0