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Soil compaction assessment using Spectral Analysis of Surface Waves (SASW)

Roslan, Muhammad Afiq and Madun, Aziman and Zainalabidin, Mohd Hazreek and Md Dan@Azlan, Mohd Firdaus and Abu Talib, Mohd Khaidir and Zahari, Muhammad Nur Hidayat and Ambak, Kamaruddin and Mohamad Ismail, Mohd Ashraf (2018) Soil compaction assessment using Spectral Analysis of Surface Waves (SASW). In: ISMAP 2017.

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Abstract

Compaction is a process of soil densification in earthworks via by pressing the soil particles with air being expelled from the soil mass, thereby increasing its unit weight. Thus, it is important to evaluate the quality of soil compaction as prescribed in the technical requirement. SASW method is widely used for estimating material properties in layered structures based on the dispersion characteristics of Rayleigh Waves. The small scale at dimension area of 1.0 m width x 1.0 m length x 0.9 m depth was excavated and back filled with laterite soil. The soil was compacted for every layer at 0.3 m thickness. Each layer of soil compaction was conducted compaction test using core cutter methods and SASW test to determine the density and shear wave velocity. The phase velocity for layer 1 was between 112 m/s and 114 m/s, layer 2 was between 67 m/s and 74 m/s and layer 3 was between 74 m/s and 97 m/s. The result shows that the compacted soil layers are not fulfilled the quality of compacted soil layers where supposedly the expected shear wave velocity for the compacted layers should be higher than 180 m/s which is classified as stiff soil.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Mr Abdul Rahim Mat Radzuan
Date Deposited: 08 Mar 2020 03:13
Last Modified: 08 Mar 2020 03:13
URI: http://eprints.uthm.edu.my/id/eprint/12763
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