Publication: Preliminary evaluation of rock mass weathering grade for granitic rock Using image analysis of cielab color space
| datacite.subject.fos | oecd::Engineering and technology::Civil engineering | |
| dc.contributor.author | Andrew, Lee Kwan Yee | |
| dc.date.accessioned | 2025-11-27T08:40:00Z | |
| dc.date.available | 2025-11-27T08:40:00Z | |
| dc.date.issued | 2024-07-01 | |
| dc.description.abstract | In tropical regions, intense weathering processes lead to the instability and failure of rock slopes. In addition to the various advanced numerical rock slope stability assessment techniques that have been developed to date, simple evaluation techniques that characterize the rock slope weathering degree based on color changes of the rock surface continue to be one of the primary methods utilized by the majority of geologists for rock slope stability assessment. This study proposed a new evaluation method for weathering assessment of the granite rock slope using digital image processing technologies to reduce human-induced errors based on a manual characterization procedure. The color variations of the limestone rock with respect to the CIELAB color space, which inferred differential weathering of the rock mass, were measured in situ using a 40 mm FRU colorimeter. For verification purpose, the Schmidt hammer was employed to ascertain the intact rock strength and the color changes of the granite rock in accordance with the International Society For Rock Mechanics (ISRM) weathering grade standard. Results indicated that a* and b* were highly correlated with R² = 0.7519 and R² = 0.5421 for Slope B and C of Baling-Gerik Route, respectively and R² = 0.9027 for the Slope of Lebuhraya Kubu Bharu – Teranum – Raub. This is highlighting the consistency of the in situ CIELAB color space data. The results were verified with the weathering grades analyzed using image analysis technique of JudGeo Software developed by the Kajima Corporation. Conclusively, in the preliminary assessment of rock mass weathering, the CIELAB color space together with image analysis is an effective tool particularly for slightly vegetated rock slope outcrops. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/23259 | |
| dc.language.iso | en | |
| dc.title | Preliminary evaluation of rock mass weathering grade for granitic rock Using image analysis of cielab color space | |
| dc.type | Resource Types::text::thesis::master thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |