Open AccessExpansive Clay Soil Stabilization Using White Soil Material and Sulfuric Acid Solution (H2SO4) For Subgrade in Godong Area - Grobogan District
Author(s) -
I. K. Suwantara,
Sri Prabandiyani Retno Wardani,
Yulita Arni Priastiwi
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/328/1/012022
Subject(s) - expansive clay , oedometer test , subgrade , geotechnical engineering , physical property , swell , clay minerals , sulfuric acid , water content , soil science , shear strength (soil) , atterberg limits , geology , environmental science , materials science , mineralogy , soil water , composite material , metallurgy , oceanography
Expansive clay is classified as an unstable soil. Soil stabilization of expansive clay can be achieved by means of replacement, chemical, and physical methods. This research studies the stabilization of expansive clay using chemical methods, by combining white soil from NTT with H 2 SO 4 . This study was conducted to determine the effect of adding white soil and H 2 SO 4 to soil physical and mechanical properties and to improve expansive clay. The method used physical and mechanical testing, namely: property test, CBR, UCS, and Oedometer with variations in composition with an addition of 3%, 4%, and 5% white soil from the weight of expansive clay and 5% H 2 SO 4 from OMC water content at 0, 7, 14, and 28 days of aging, then compared to untreated expansive clay. The results showed that physically stabilized clay became inactive, although its plasticity and expansion rate decreased. Mechanically, there was an increase in the compressive and shear strength of 43.82%, and unsoaked CBR density of 83.25% and soaked CBR of 7.4%, which is directly proportional to the aged soil. Swell potential and swell pressure decreased by 90.71% and 65.71% respectively. The optimum composition is the composition with an addition of 3% white soil and 5% H 2 SO 4 at 28 days of aging.