Microstructural Features and Technical Properties of Calcium Sulfoaluminate-Based Cements
A rapid-hardening and dimensionally stable calcium sulfoaluminate (CSA) cement (i), consisting of 80% CSA clinker and 20% anhydrite by mass, and an expansive CSA-based binder (ii), composed by 44% CSA clink er, 16% anhydrite and 40% high-strength and rapid-hardening CEM I 52.5R Portland cement (used also as a reference term), were cured with a 0.5 water/ solid mass ratio from 4 hours to 56 days and submitted to microstructural (dif ferential thermal-thermogravimetric and X-ray diffraction analyses, mercury in trusion porosimetry, scanning electron microscopy) and physical/mechanical (workability, shrinkage, compressive strength) tests.DTA-TG and XRD analyses assessed the role played by the main reactions occurring in the hydrating systems.The porosimetric and morphological fea tures well correlated with the expansive/non-expansive behavior of the investi gated cements.
Calcium sulfoaluminate cements Portland cement addition Hydration Microstructural characterization Technical behavior
Antonio Telesca Milena Marroccoli Michele Tomasulo Gian Lorenzo Valenti Stefano Allevi Maurizio Marchi
Scuola di Ingegneria ,Università degli Studi della Basilicata Viale dell Ateneo Lucano 10,85100 Po CTG S.P.A.-Italcementi Group,Via Camozzi 124,24121 Bergamo,Italy
国际会议
武汉
英文
45-64
2013-10-23（万方平台首次上网日期，不代表论文的发表时间）