Print Email Facebook Twitter Effect of a mixed-in crystallization inhibitor on the properties of hydraulic mortars Title Effect of a mixed-in crystallization inhibitor on the properties of hydraulic mortars Author Kamat, Ameya (TU Delft Heritage & Technology; TU Delft Materials and Environment) Lubelli, B. (TU Delft Heritage & Technology) Schlangen, E. (TU Delft Materials and Environment) Date 2022 Abstract Porous building materials are often subjected to damage due to salt crystallization. In recent years, the addition of crystallization inhibitors in lime-based mortar, has shown promising results in improving durability of this material against salt decay. Lime-based mortars have low mechanical properties and slow setting. They are often replaced with hydraulic binders to overcome these limitations. However, the effect of crystallization inhibitors in mortars with hydraulic binders is still unknown. Incorporation of crystallization inhibitors in hydraulic mortars would widen the application field of this new technology. In this research, the possibility to develop hydraulic mortars with mixed-in sodium ferrocyanide, an inhibitor of sodium chloride crystallization, is explored. As an essential first step, the influence of this inhibitor addition on the properties of hydraulic mortars is investigated. Two common types of hydraulic binders, natural hydraulic lime (NHL) and ordinary Portland cement (CEM I), were studied; the inhibitor was added in different amounts (0%, 0.1% and 1% by binder weight) during mortar (and binder paste) preparation. Relevant mortar and binder paste properties, in fresh (hydration, workability, setting time) and hardened (mechanical strength, elastic modulus, pore size distribution, water absorption) state, were assessed using several complementary methods and techniques. The results indicate that the addition of ferrocyanide does not alter the studied properties of both NHL and CEMI-based mortar and binder pastes. These results are promising for the further development of hydraulic mortars with an improved durability with respect to salt decay. Subject salt damagecrystalization inhibitorhydraulic mortardurabilitysodium ferrocyanide To reference this document use: http://resolver.tudelft.nl/uuid:f887d88a-6fe4-41ca-ad23-ea117651b9cf DOI https://doi.org/10.3934/matersci.2022038 ISSN 2372-0484 Source AIMS Materials Science, 9 (4), 628-641 Part of collection Institutional Repository Document type journal article Rights © 2022 Ameya Kamat, B. Lubelli, E. Schlangen Files PDF 10.3934_matersci.2022038.pdf 1.72 MB Close viewer /islandora/object/uuid:f887d88a-6fe4-41ca-ad23-ea117651b9cf/datastream/OBJ/view