Pakistan Journal of Geology (PJG)

Journal: Pakistan Journal of Geology (PJG)
Author: K. I. Adebayo, O. E. Faseki, A. S. Oji, M. A. Saliu, and O. A. Ademeso

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/pjg.02.2025.41.44

Los Angeles (LA) abrasion test is the best known and most widely applied method used to measure abrasion resistance. However, its preparation phase and execution are expensive and time consuming compared to other mechanical aggregate tests. As such, establishing empirical equations to predict LA abrasion from physical and mechanical methods that are simpler and cheaper to execute provides both time and money savings and is useful for forecasting purposes in preliminary studies. This study aims at obtaining empirical relationships between the LA abrasion and other practical aggregate properties such as aggregate impact value (AIV), aggregate crushing value (ACV), unconfined compressive strength (UCS), specific gravity of the calcareous sandstones collected from four different locations in parts of southeastern Nigeria. The rocks’ ACVs and AIVs ranged from 16.34 to 26.29 % and 15.87 to 22.52 % respectively, while the LAAVs varied from 38.62 to 53.1 %. The slake durability index is within the range of 91.1 to 96.7 % and the strength values of the studied rocks fall between 20 to 41 MPa. The correlation plots show that LA abrasion resistance had a very strong linear positive relationship of R2 = 0.98, 0.74 with the ACV, AIV; a moderate positive relationship (R2 = 0.49, 0.50) with porosity, water absorption and an inverse relationship with the UCS (R2 = 0.77), slake durability (R2 = 0.43), dry density (R2 = 0.69) and specific gravity values (R2 = 0.55). Furthermore, the highest correlation coefficient was obtained from the ACV while slake durability recorded the weakest correlation with LA abrasion values. In conclusion, the study suggests that ACV, AIV and UCS tests are the best empirical methods for estimating the LA abrasion value.