چکیده مقاله
In the present laboratory study, cubes of concrete were heated at a temperature of 600°C Then, the efficiency of the microorganism that produces calcium carbonate was examined by conducting compressive strength and water absorption tests on control, heat damaged and bacterial specimens to evaluate the amount of repairing of damaged samples The experiment test results revealed that the microorganism Bacillus Sphaericus was very effective in repairing surface cracks in damaged specimens The compressive strength of specimens treated with the microorganism rose by 52% In addition, the amount of water absorption of bacterial specimens decreased by 39% compared to damaged samples Scanning Electronic Microscope SEM image of bacterial sample showed that the microorganism produced a considerable amount of calcium carbonate to fill the thermal cracks
کلیدواژهها
نویسندگان
Milad Nimafar
Department of Engineering, Shahid Ashrafi Esfahani University, Isfahan, Iran
Zahra Ahmadi
Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
Shahrokh Soltaninia
Department of Environmental Science, Faculty of Natural Resources and Environment, Scienceand Research Branch, Islamic Azad University, Tehran, Iran
شیوه ارجاع
Nimafar, Milad and Ahmadi, Zahra and Soltaninia, Shahrokh,1402,Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature,13th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات سیزدهمین کنگره بین المللی مهندسی عمران25 مهر 1402 · تهران