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https://ptsldigital.ukm.my/jspui/handle/123456789/487300Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Zamri Chik, Prof. Ir. Dr. | - |
| dc.contributor.author | S.M. Taohidul Islam (P54855) | - |
| dc.date.accessioned | 2023-10-11T02:32:19Z | - |
| dc.date.available | 2023-10-11T02:32:19Z | - |
| dc.date.issued | 2013-10-10 | - |
| dc.identifier.other | ukmvital:75057 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/487300 | - |
| dc.description | Soil compaction characterizations are important for civil engineering especially in geotechnical engineering, and road and highway engineering. Conventional methods of soil compaction characteristics include maximum dry density and optimum moisture contents. Both methods use laboratory testing which is tedious and time consuming in practice. Electrical resistivity method is an effective nondestructive method such as Self-Potential (SP), Four-electrode Probe, Vertical Electrical Sound (VES) and Non-contact Electromagnetic Profiling to obtain soil compaction characteristics and near surface soil properties. A mathematical model is developed in this research to obtain the soil compaction characteristics through measurement of electrical resistivity of soil. Soil electrical resistivity is also used to determine field compaction characteristics and soil state behavior for better data performance with respect to conventional laboratory tests. Shear modulus (G) and shear wave velocity (Vs) of soil are crucial in assessment of soil dynamic properties in geotechnical investigations. Borehole explorations that are normally performed to measure dynamic soil parameters in situ are costly and the method's physical destructive nature is evident. Hence, surface wave analysis was quite commonly used as a non-destructive method in near surface soil characterizations. Multi-channel Analysis of Surface Waves (MASW) method is the improved surface wave method by increasing the number of geophones in the acquisition of seismic signals. However it is quite difficult to interpret Vs profile through seismic signal analysis of multiple geophones. There are limitations in obtaining specific soil properties in different layers in conventional soil apparent electrical resistivity method. Multi-layer resistivity model on the other hand was used in this research where soil resistivity ratio was introduced to give more accurate near surface soil profile. Passing electrical currents from a constant voltage in different layers present the resistance as well as resistivity of a soil. Soil maximum dry density and optimum moisture contents were obtained from soil electric resistivity at a faster and accurate result in the field and in the laboratory. Soil liquid limits and plastic limits were identified efficiently with soil electric resistivity. A multi-layer soil resistivity algorithm was developed based on electric theory in resistivity ratio. Correlations were developed between shear wave velocity Vs and soil resistivity ratios for the assessment of near surface soil properties. The main advantage of using the newly developed multi-layer resistivity method was provened where qualitative information such as shear wave velocity Vs profiles, particle size distributions, soil mass densities and other compaction characteristics were obtained quickly with higher accuracy in the field as well as in the laboratory. Based on soil resistivity measurements, a tomography technique was incorporated to produce 2-D and 3-D soil shear velocity profiles that showed good agreements with borehole results obtained in several sites at Universiti Kebangsaan Malaysia (UKM).,PhD | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | - |
| dc.rights | UKM | - |
| dc.subject | Characterizations Of Soil Properties | - |
| dc.subject | Profiles Using Electrical Theories | - |
| dc.subject | Profiles Using Electrical Applications | - |
| dc.subject | Soil stabilization | - |
| dc.title | Characterizations Of Soil Properties And Profiles Using Electrical Theories And Applications | - |
| dc.type | Theses | - |
| dc.format.pages | 181 | - |
| dc.identifier.callno | TA710 .I845 2013 3 | - |
| dc.identifier.barcode | 000581 | - |
| Appears in Collections: | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_75057+Source01+Source010.PDF Restricted Access | 6.05 MB | Adobe PDF |  View/Open |
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