journal article·2013-08

Influence of clinker sulfate on cement paste external sulfate attack

Sayed Horkoss, Simone Julien, Gilles Escadeillas, Roger Lteif, Toufic Rizk

Advances in Cement Research· Volume 25· Issue 4
Publisher page

Abstract

This paper aims to clarify the influence of the clinker sulfate on external sulfate attack of cement paste. The investigation shows that the clinker sulfate does not have any direct influence on the resistance of cement to external sulfate attack. Indirectly this sulfate reduces the amount of tricalcium aluminate (C3A) and tricalcium silicate (C3S), generating an improvement in the level of cement resistance to external sulfate attack. The mortar expansions, after 1 year of storage in 5% sodium sulfate (Na2SO4) solution, verify the mineralogical results. Additionally the investigation indicates that the combination of the three techniques – X-ray diffraction analysis, scanning electron microscopy and graphical treatment of microanalysis by energy-dispersive X-ray spectroscopy – leads to a better understanding of the causes of paste deterioration by external sulfate attack.
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Research context

OpenAlex topics: Concrete and Cement Materials Research · Building materials and conservation · Innovative concrete reinforcement materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Raw material, laboratory and quality control manager, Cimenterie Nationale S.A.L., Plant Laboratory Department, Chekka, Beirut, Lebanon; Saint Joseph University, Faculty of Sciences, Beirut, Lebanon

Engineer, Toulouse University, UPS, INSA, LMDC (Laboratoire Matériaux et Durabilité des Constructions), Toulouse, France

Director, Toulouse University, UPS, INSA, LMDC (Laboratoire Matériaux et Durabilité des Constructions), Toulouse, France

Professor, Saint Joseph University, Faculty of Sciences, Beirut, Lebanon

Dean, Saint Joseph University, Faculty of Sciences, Campus of Sciences and Technologies, Beirut, Lebanon

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