STUDY OF SOIL-WATER CHARACTERISTIC CURVE (SWCC) SCANNING WETTING OF 20% MOISTURE CONTENT VALUE FOR COMPACTED CRUSHED SHALE

• Main Author: Astasya, Nita
• Format: Theses
• Language: Indonesia
• Subjects: Teknik sipil
• Online Access: https://digilib.itb.ac.id/gdl/view/71259
• Institution: Institut Teknologi Bandung

Construction problems that are a challenge for engineers in Indonesia cannot always be quantified by the phenomenon of Classical Soil Mechanics or Saturated Soil Mechanics. The naturally occurring dry-wet phenomenon as hysteresis behavior can be translated in Unsaturated Soil Mechanics. Scanning wetting is one of the hysteresis in Unsaturated Soil Mechanics that can translate or represent real events that occur in nature as a natural dry-wet behavior experienced by the soil. The soil water characteristic curve (SWCC) describes the relationship between matrix suction and soil moisture content. The method of measuring soil matrix suction in the laboratory using filter paper is also called water flow through unsaturated soil. The method of using filter paper is an indirect method, because it is only a measurement of water content without suction measurement. SWCC is part of the constitutive field of Unsaturated Soils. The merger of SWCC and the result of consolidation can result in a constitutive field. This constitutive field can provide information regarding the strength and volume changes of Unsaturated Soils. Scanning wetting measurements for moisture content of 21%, 22%, 24%, 25%, and 26% obtained an equilibrium time of 21 days. Numerical results using SSEP/W resulted in an equilibrium time of 26 days. Thus, from testing 5 water content based on the reference drying curve from the previous study, a wetting scanning curve can be obtained. For wetting fittingscanning parameters, it still has to be optimized because it still covers only 2 points of moisture content.