Investigation of mechanical and mineralogical properties of mortars subjected to sulfate |
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| Affiliation: | 1. School of Material Science and Engineering, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, Henan 454000, China;2. School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, USA;1. Petrochemical Department, Egyptian Petroleum Research Institute, Cairo, Egypt;2. Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt;3. Chemistry Department, Faculty of Science, Benha University, Benha, Egypt;4. Chemistry Department, Faculty of Science, Al-Imam Muhammad ibn Saud Islamic University, Riyadh, Saudi Arabia;1. College of Civil Engineering, Hunan University, Changsha 410082, China;2. Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark;1. Instituto Superior de Engenharia de Lisboa, Área Departamental de Engenharia Civil, Portugal;2. Laboratório Nacional de Engenharia Civil (LNEC), Lisboa, Portugal |
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| Abstract: | The durability can be described as concrete’s resistance to the destructive influences of a medium containing acid, sulfate and/or various chemicals and mechanical effects. The main objective of this study is investigation of mechanical and mineralogical properties of cement mortar with different pozzolanic compositions and subjected to sulfated medium. In the study, the mortars produced with cement samples having seven different compositions and varied with an air-entraining agent were subjected to the influence of sulfate. This study is supported by thin section and X-ray powder diffraction (XRPD) investigations, in addition to being subjected to the basic tests, such as compression and flexure. The most important findings obtained from the study are that the compact structure has more effective properties against sulfate effects for cement mortars than pozzolanic materials’ effects and the highest pozzolanic material ratio is restricted about 25–30% by mass because this ratio is a boundary of mechanical properties. |
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