Open AccessThe use of bottom ash and limestone as soil stabilization material based on unconfined compression test
Author(s) -
Ika Puji Hastuty,
. Roesyanto,
Daniel Stephanes
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/801/1/012009
Subject(s) - atterberg limits , geotechnical engineering , bottom ash , compressive strength , soil water , water content , california bearing ratio , fly ash , environmental science , soil science , geology , materials science , composite material
Unconfined Compression Test (UCT) is a test for cohesive soil strength, and this could be tested for both existing soil and remolded. UCT is aimed to determining the soil strength rapidly and quickly and economycally. Soil improvement is done by mixing the soil with other material to have a better soil characteristics. This research uses chemical stabilizers, i.e, limestone and bottom ash. This research is meant to determine the value of maximum compression strength using UCT with additional stabilizing materials and to determine the optimum water content of additional limestone and bottom ash. Based on the result, it is known that the existing soil has water content 24.35%, unit weight 2.673, liquid limit (LL) 38.15%, and plasticity index (PI) 21.54%. Based on AASHTO, that soil is categorized as Clay Low (CL), where as based on USCS it is categorized as A-6. Value of UCT of existing soil is 1.320 kg/cm 2 . After the soil is mixed with variation of limestone and bottom ash determined, it is obtained that the most optimum UCT value is at variation of 4% limestone + 8% bottom ash with value 2.585 kg/cm 2 , optimum water content (W opt ) 21.80 % and dry weight maximum (γd max) 1.427 gr/cm 3 .