Dredged marine sand as a new source for construction materials

作者：Limeira J^*; Agullo L; Etxeberria M

来源：Materiales de Construccion, 2012, 62(305): 7-24.

DOI：10.3989/mc.2011.61710

• dredged marine sand
• mortars
• mechanical properties

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 Rapita 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.

• 出版日期2012