THE EFFECT OF USING OF VULANIC ASH AND TAILING AS STABILIZATION MATERIALS IN SOIL CLAY ON CBR VALUE Achmad Abrar Haziri (a*), Syahril (b)
(a) Master of Applied Infrastructure Engineering, Politeknik Negeri Bandung. Jl. Gegerkalong Hilir, Ds. Ciwaruga, Bandung 40012. Indonesia.
(b) Departement of Civil Engineering, Politeknik Negeri Bandung. Jl. Gegerkalong Hilir, Ds. Ciwaruga, Bandung 40012. Indonesia
*ahmad.abrar.mtri18[at]polban.ac.id
Abstract
Soil is the basic element for the structure or construction, which will be a building construction or road construction, often causes problems if it has bad properties. Two main problems in soft soils are large subsidence and small carrying capacity. One of the soil improvement efforts that will be investigated is soil stabilization using waste materials, namely Volcanic Ash and Tailings. Soil stabilization is the process of mixing soil with certain materials to improve the technical properties of the soil and is an attempt to change or improve the technical properties of the soil to meet certain technical requirements which of the stabilization can increase the carrying capacity of the soil. This research is an experimental study to determine the carrying capacity of soft clay soil stability, using volcanic ash (AGV) deposits and tailing (TL) instead of cement. The research variables are volcanic ash deposits and tailings which varied from AGV (8%) and TL (4%, 5%, 6%) and curing time for 3 days, 7 days and 14 days. The purpose of this study was to find out and to compare the CBR values of clay before and after stabilization with the addition of volcanic ash and tailing
