Keywords: Granite, Salty Solution, Slake Durability, Slaking Fluid, Weathering

Abstract

The slake durability (SD) of a rock is a vital engineering property relevant to its evaluation and estimation of its degradability due to mechani￾cal and chemical breakdown. This study assesses the infuence of pH of slaking fuid and diferent acidic solutions on slake durability of granitic rocks (fne￾grained and porphyritic granite) by carrying out slake durability test (SDT) in acidic and basic conditions or environment. Petrographic analysis and basic labora￾tory tests such as porosity, water absorption capacity, density, and point load test, Schmidt rebound hammer were performed on the granitic rocks. The SDT was carried out in accordance with the standard procedure in distilled water and in diferent slaking fuids pre￾pared by adding suitable amount of H2SO4 and HNO3 (representing acidic solutions) and NaOH (represent￾ing alkaline solutions) to distilled water. The SD of the granitic rocks was evaluated up to 8 cycles in acidic and basic solutions with pH ranging from 2 to 12. The slake durability index (SDI) of the granitic rocks range from very high to extremely high under the diferent pH and two acidic solutions