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您的检索式：作者名="Mohamed ZAWAM"
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| 1 | Effect of fineness of ash on pozzolanic properties and acid resistance of sugarcane bagasse ash replaced cement mortars显示文摘This paper addresses the potential use of Sugar Cane Bagasse Ash(SCBA)as a pozzolanic material for partial cement replacement in concrete mixtures.Cement mortars containing SCBA having five different particle size distributions at a replacement rate of 20%by weight were used to study the chemical and physical pozzolanic properties of SCBA.The durability of SCBA replaced mortars was also evaluated.SCBA with 0%retained on sieve No.325 was used to replace 20%by weight of cement and create mortar specimens that were subjected to sulfuric acid attack of varying concentrations(1%–3%by weight of water).The tested samples were observed to check visual distortion,mass loss,and compressive strength loss at 1,7,14,28,and 56 d of acidic exposure,and the results were compared to those for the control sample,that was lime water cured,at the same ages.The SCBA sets were found to meet the requirements for pozzolan class N specified by ASTM C 618.Mortars containing SCBA with 0%or 15%retention produced better compressive strength than the control mortars after 28 d.Additionally,X-ray fluorescence and X-ray diffraction analysis showed that the SCBA had favorable chemical properties for a pozzolanic material.Furthermore,SCBA replaced samples at all ages showed improved resistance against acidic attack relative to that of the control mortars.Maximum deterioration was seen for 3%concentrated solution.This study’s findings demonstrated that SCBA with an appropriate fineness could be used as a pozzolanic material,consistently with ASTM C 618. | Shan E ALI Rizwan AZAM Muhammad Rizwan RIAZ Mohamed ZAWAM | 2022 | Frontiers of Structural and Civil Engineering2022，16，10： | 0 |
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