Cholik Boy Madais
Metric No: BK10110048
Topic: Engineering Properties of Soil Treated with Soil Fibre Column
Abstract: Introduction of soil fiber column as soil reinforcement is one of the technique to improve the performances of poor soil different from other soil column reinforcement such as cement column, Fly ash column and lime column. The performances of reinforced soil will be largely dependent on the inclusion of fiber and the soil, the percentage of fiber used and the time of curing of the soil fiber column. Therefore, this research focused on the performance of fiber stabilizer on the engineering properties of clay, determining the effective percentage of fiber to give higher maximum dry density and optimum water content, and to study the effect of curing time of fiber column to the shear strength and consolidation settlement of clay. There are four experiments were conducted on this research which is Atterberg limit, compaction test, triaxial test and consolidation test. On the Atterberg limit test, the results show that the effect of fiber inclusion on clay soil, where the plastic limit decrease and the liquid limit increase as the fiber content increase. The result then lead to the increased of plasticity index of the clay. For the compaction test, the OWC was increased and the MDD was decreased as the percentage of fiber increased from 3% to 5%. From the result, the 3% fiber content was the effective percentage that gives higher value of MDD. For triaxial test, the deviatory stress and shear strength of the clay soil was increase when 3% of fiber content used. Further addition of fiber content cause the deviatory stress and shear strength decreases. This shows that the 3% fiber was the effective percentage to give higher value of shear strength. The test also proves that increasing the time of curing will increase the shear strength of the clay. The time of curing also has affecting the consolidation test. As the time of curing increased, the void ratio of the sample decreased and the value of consolidation settlement also decrease. Therefore, all the results can be conclude that the percentages of fiber used and the curing period will affect the engineering properties of clay soil.