TY - JOUR AU - Limeira, J. AU - Agulló, L. AU - Etxeberria, M. PY - 2012/03/30 Y2 - 2024/03/28 TI - Dredged marine sand as a new source for construction materials JF - Materiales de Construcción JA - Mater. constr. VL - 62 IS - 305 SE - Research Articles DO - 10.3989/mc.2011.61710 UR - https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/641 SP - 7-24 AB - This work deals with the use of dredged marine sand (DMS) in pastes and mortars as construction material. Different materials from two Spanish ports were used: DMS-0 from Sant Carles de la Ràpita and DMS-A, DMS-B and DMS-C from Barcelona. The aim of the study was to assess DMS as addition (its influence on cohesion and fluidity) or as a fine granular corrector (its influence on compressive strength) in different mixes of cement paste and mortars, respectively. Two experimental stages were carried out: firstly, DMS-0 material was used on the production of pastes and mortars (partial substitution of raw sand 0/2 mm); secondly, DMS-A, DMS-B and DMS-C were used on mortar production (partial substitution of raw sand 0/5 mm). The fresh and hardened properties obtained were compared to those of the control mixes; the results revealed 25 % as an optimum substitution ratio of raw sands for DMS. ER -