Effect of Shape on Strength and Durability of Crushed and Uncrushed Quartzite Aggregates from Central Nepal Himalaya

Authors

  • Dinesh Raj Sharma Tribhuvan University, Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, NEPAL.
  • Naresh Kazi Tamrakar Tribhuvan University, Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, NEPAL. https://orcid.org/0009-0004-1493-4354

DOI:

https://doi.org/10.22452/mjs.vol44no3.4

Keywords:

Quartzite, aggregates, aggregate shape, strength, durability

Abstract

This study examines the influence of shape on the strength and durability of angular (crushed) and rounded (uncrushed) quartzite aggregates sourced from the Central Nepal Himalaya. Crushed quartzite samples, characterized by angular morphologies, exhibit enhanced interlocking and greater variability in mechanical properties such as Point Load Strength Index (PLSI), Aggregate Impact Value (AIV), and Aggregate Crushing Value (ACV), due to their rough textures. In contrast, rounded (uncrushed) quartzite from alluvial gravels, with subrounded particles, demonstrates more consistent strength and durability, as evidenced by narrower ranges in PLSI, AIV, and ACV. Durability tests, including Slake Durability Index (SDI), Los Angeles Abrasion Value (LAAV), and Sulfate Soundness Value (SSV), indicate that angular aggregates provide superior abrasion resistance, whereas subrounded aggregates display more uniform resistance to sulfate-induced weathering. These findings offer valuable insights for selecting quartzite aggregates based on shape to optimize performance in construction applications.

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Author Biography

Naresh Kazi Tamrakar, Tribhuvan University, Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, NEPAL.

Dr. Naresh Kazi Tamrkar

Associate Professor 

Department of Geology, Tribhuvan University, Kirtipur Nepal. 

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Published

30-09-2025

How to Cite

Sharma, D. R., & Tamrakar, N. K. (2025). Effect of Shape on Strength and Durability of Crushed and Uncrushed Quartzite Aggregates from Central Nepal Himalaya. Malaysian Journal of Science (MJS), 44(3), 27–49. https://doi.org/10.22452/mjs.vol44no3.4

Issue

Vol 44 No 3 (2025): September 2025

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Original Articles

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