Skip to Main content Skip to Navigation
Journal articles

Composite cement mortars based on marine sediments and oyster shell powder

Abstract : Additions of dredged marine sediments and oyster shell powder (OS) as cement substitute materials in mortars are examined by several techniques. The sediments have high water and chloride contents and calcite, quartz, illite and kaolinite as principal minerals. The OS powders are entirely composed of calcium carbonate and traces of other impurities. Four mixtures of treated sediments and OS powders at 650 °C and 850 °C are added to Portland cement at 8%, 16% and 33% by weight. The hydration of composite pastes is followed by calorimetric tests, the porosity accessible to water, the bulk density, the permeability to gas, the compressive strength and the accelerated carbonation resistance are measured. In general, the increase of addition amounts reduced the performance of mortars. However, a reduction of gas permeability was observed when the addition was up to 33%. Around 16% of addition, the compressive strength and carbonation resistance were improved
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01302342
Contributor : Laurent Jonchère <>
Submitted on : Thursday, April 14, 2016 - 9:40:15 AM
Last modification on : Friday, January 24, 2020 - 10:26:03 AM

Links full text

Identifiers

Citation

H. Ez-Zaki, A. Diouri, Siham Kamali-Bernard, O Sassi. Composite cement mortars based on marine sediments and oyster shell powder. Materiales de Construcción, 2016, 66 (321), pp.e080. ⟨10.3989/mc.2016.01915⟩. ⟨hal-01302342⟩

Share

Metrics

Record views

130