Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution
Hegazy, A., Khalil, A., El-Alfi, E., El-Shahat, M. (2019). Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution. EKB Journal Management System, 62(6), 1145-1155. doi: 10.21608/ejchem.2019.6563.1579
A. A. Hegazy; A. A. Khalil; E. A. El-Alfi; M. F. El-Shahat. "Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution". EKB Journal Management System, 62, 6, 2019, 1145-1155. doi: 10.21608/ejchem.2019.6563.1579
Hegazy, A., Khalil, A., El-Alfi, E., El-Shahat, M. (2019). 'Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution', EKB Journal Management System, 62(6), pp. 1145-1155. doi: 10.21608/ejchem.2019.6563.1579
Hegazy, A., Khalil, A., El-Alfi, E., El-Shahat, M. Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution. EKB Journal Management System, 2019; 62(6): 1145-1155. doi: 10.21608/ejchem.2019.6563.1579

Durability of Supersulphated Cement Pastes Activated with Portland Cement in Magnesium Chloride Solution

Egyptian Journal of Chemistry
Article 14, Volume 62, Issue 6, June 2019, Page 1145-1155  XML PDF (4.19 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2019.6563.1579
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Authors
A. A. Hegazy email 1; A. A. Khalil1; E. A. El-Alfi1; M. F. El-Shahat2
1Refractories, Ceramics and Building Materials Department, National Research Centre, Cairo, Egypt
2Chemistry Dept., Faculty of Science, Ain Shams University, Cairo, Egypt
Abstract
This study investigates the effect of chemical attack of chlorides on the physicomechanical properties of the prepared supersulphated cement (SSC) pastes activated by 2-11 % ordinary Portland cement (OPC) after immersion in 4% magnesium chloride solution for up to 12 months. Results indicated that the bulk density increases while the apparent porosity decreases with hydration time for all the SSC pastes. The compressive strength results showed a significant increase for all SSC samples hydrated up to 12 months whereas they showed high resistance to deterioration. The hydration products appeared via XRD, FTIR, TG, DTG, and DSC are ettringite, gypsum, anhydrite, and calcium silicate hydrate (CSH).
Keywords
Supersulphated cement; Slag; Anhydrite; Physicomechanical properties; Magnesium chloride; Aggressive Media
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