Title: Early Age and Durability Properties of Dredged Marine Sand Mortars

Author(s): Amor Ben Fraj, Mohamed Miraoui, Frederic Boinski, and Pierre Mounanga

Publication: Symposium Paper

Volume: 289

Issue:

Appears on pages(s): 1-15

Keywords: Dredged marine sand, durability properties, heavy metals, hydration, mechanical properties, mortar, physical properties, TGA.

DOI: 10.14359/51684282

Date: 9/14/2012

Abstract:
This study examines the early-age and durability properties of mortars made with Dredged Marine Sand (DMS). Both physical and mechanical properties of the DMS mortars were investigated and compared to those of mortar prepared with conventional aggregates. Results showed that the substitution of Standardized Sand (SS) with DMS had no significant effect on mortar hydration. For a rate substitution of 25%, the mechanical properties of mortars increased, particularly in case of air curing. The increasing of substi¬tution rate of SS with DMS, slightly decreased the mortar density and increased entrapped air and total porosity. For a substitution rate of 50% and more, a decrease of the mechanical properties was measured. Chloride migration coefficients of tested mortars followed similar trends.