Ettringite formation on the aggregate — cement paste interface

• Published in: Cement and concrete research Vol. 15; no. 2; pp. 378 - 380
• Main Authors: Monteiro, J.J.M., Mehta, P.K.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Ltd 01.01.1985; Elsevier Science
• Subjects: Applied sciences; Buildings. Public works; Cement concrete constituents; Cements; Exact sciences and technology; Materials; Ettringite; Hydration; Cement; Reaction mechanism; Concrete; Portland cement; Calcium Aluminates Sulfates Hydrates; Interface; Granite; Aggregate(materials)

Subject of the experiment was a portland cement paste, with w/c ratio of 0.35, cast against the polished surface of a granite rock, and hydrated for various times. Abrasion and study of the polished paste-rock interfacial zone using QXRD revealed high quantities of ettringite next to the aggregate s...