Quantifying Decay Due to Wet Atmospheric Deposition on Basalt

The study of building materials is important for a better conservation built heritage. Worldwide, volcanic stones (including basalt, andesite and dacite) are among the least studied materials. In this research, decay red basalt due to wet atmospheric deposition was studied. Red exposed artificial rain solutions, prepared from samples collected weekly 2014–2019. stone-built heritage indirectly emulating accelerated weathering under three different volume weighted mean (VWM) compositions: global, acid no-acid categories. Lixiviates were analyzed understand deterioration mechanisms taking place inside material. Decay quantified as mass difference, water absorption capacity (WAC) open porosity (OP) changes. Results show that methodology used suitable research indeed prone by deposition. main washing insoluble compounds, dissolution minerals, salt crystallization cation exchange. WAC OP showed promising results their appropriateness monitoring variables in situ. Acid conditions produce most severe decay, but Ph effect not precipitation volume. Non-linear equations relating with difference presented.