Dayang Siti Zubaidah binti Mohd Hanan
Metric No: BK10110056
Topic: Engineering Properties of Soil Treated With Cement-Soil Column
Abstract: To date, handling problematic soil is a very challenging problems faced by soil engineers in order to meet the necessity requirement for a strong construction materials. Consequently, soil stabilization has been introduced in order to improve the engineering properties of the soil to meet the requirement. Cement stabilization has widely being used to improve not only problematic clay for construction use, but also for other purposes such as increasing sub base strength, improving slope stability and many other examples. Soil Column is one of method usually used to apply soil stabilization. The main objective of this research paper is to investigate the engineering properties of problematic soil stabilized with cement-column. The soil untreated soil sample was tested with several laboratory test such as Consistency Test, Standard Proctor Test, Triaxial Test and Consolidation Test and the results were compared with soil samples treated with 3% and 5% cement stabilizer in soil column to investigate the effect of different percentage of cement-soil column to the engineering properties of the problematic soil. The same soil samples were tested for 7 and 28 days curing period respectively to investigate the effect of curing period of cement-soil column to the engineering properties of stabilized problematic soil. The results reveals that the value of liquid limit of soil samples increases with the increase of both percentage of cement stabilizer and curing period. On the other hand, the value of plastic limit decreases with the increment of also both the percentage of cement stabilizer and curing period which leads to the decrease of plasticity index. The result shows that the maximum dry density of the treated soil sample shows an increasing value of maximum dry density with the increasing percentage of cement stabilizer and longer curing period. However on the other hand, the value of moisture content decreases with the increasing percentage of cement stabilizer and longer curing period time. The value of shear strength of the treated soil increases with the increasing percentage of cement stabilizer. However the result shows a drop of shear strength with 5% of cement stabilizer after 28 days. The cohesion and angle of friction of the specimens also increases with the increasing percentage of cement stabilizer and curing period. The value of coefficient of consolidation, cv decrease with the increasing percentage of cement stabilizer and curing period of the soil. On the other hand, the hydraulic conductivity and the coefficient of volume compressibility, mv of the soil sample decreases with the increasing percentage of cement stabilizer and curing period.