|
Strength and Durability of Quartzite from the Pandrang and the Chisapani Quartzite Units of Bhimphedi Group, Central Nepal Lesser Himalaya |
|---|---|
| รหัสดีโอไอ | |
| Creator | A. Dinesh Raj Sharma |
| Title | Strength and Durability of Quartzite from the Pandrang and the Chisapani Quartzite Units of Bhimphedi Group, Central Nepal Lesser Himalaya |
| Contributor | B. Naresh Kazi Tamrakar |
| Publisher | Southeast Asian Geotechnical Society |
| Publication Year | 2568 |
| Journal Title | Geotechnical Engineering Journal of SEAGS & AGSSEA |
| Journal Vol. | N/A |
| Journal No. | 3 |
| Page no. | 1-16 |
| Keyword | Quartzite Characterization, Railway Aggregates Evaluation, Durability Assessment for Railway Applications |
| URL Website | https://seags.ait.asia/ |
| Website title | AGSSEA & SEAGS |
| ISSN | 0046-5828 |
| Abstract | This study focuses on the characterization and evaluation of quartzites sourced from the Pandrang Quartzite and the Chisapani Quartzite belonging to the Bhimphedi Group of the Lesser Himalayan sequence for their potential use as railway aggregates. The objective of the research is to assess the physical, mechanical, and durability properties of these crushed rock aggregates, considering their suitability for railway applications. The quartzites, classified as medium-grained, monomictic quartzites belonging to the Precambrian Age, exhibit white to yellowish or brownish white colour, and rough surface texture. The investigation gives away consistent and similar physical properties in both quartzite samples, including narrow ranges in density, specific gravity, and water absorption. While the quartzites demonstrate varying levels of strength, with a majority falling into the strong to very strong category, some exhibit medium strong and extremely strong characteristics. Additionally, the aggregates show a range of values for the Aggregate Impact Value (AIV) and Aggregate Crushing Value (ACV), indicating variations in toughness. The quartzites show high resistance to slaking, minimal weight changes during slake durability testing, and superior resistance to freeze and thaw weathering. Moderate hardness and abrasion resistance suggest their suitability as durable aggregates for ballast. Despite comparable density ranges and aggregate crushing values, the Pandrang Quartzite generally exhibits higher strength and durability than the Chisapani Quartzite, suggesting superior quality. Except for crushing resistance, the quartzites meet the requirements specified by (American Railway Engineering and Maintenance-of-Way Association (AREMA) and British Railway Standards, making them suitable for railway applications. The study provides valuable insights into the physical, mechanical, and durability characteristics of quartzite aggregates, guiding their potential utilization in railway infrastructure with an emphasis on durability and strength. |
