DURABILITY OF REINFORCED CONCRETE MADE WITH LOW CLINKER, TERNARY BLEND CEMENT

Author(s): Martirena, J. F., Vizcaíno, L. M., Antoni, M. G., Henocq, P., Alujas, A. and Scrivener, K. L.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 786-793
Total Pages: 9
Language: English

Abstract: A low clinker ternary blended cement has been developed by taking advantage of the synergy between alumina-rich calcined clay and limestone in cementitious systems. Clinker substitution ratio up to nearly 50% has been achieved in laboratory conditions without compromising the mechanical properties of the cement produced. The authors carried out an in-depth study of the cementitious system, which included durability studies based on the protocol established by the multi-ionic transport model STADIUM. Chloride ion penetration was measured in mortar prisms aided by chloride migration cells; tortuosity and ion diffusion coefficient of the system came out as results. In all cases a reference made with ordinary Portland cement was also studied. The studies indicate that mortars made with the ternary blend show a much lower ionic diffusion coefficient; despite it has a higher total porosity related to Portland cement mortars. The good resistance to chloride penetration is basically attributed to the higher tortuosity and pore refinement achieved by this blended cement.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00