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Title: Enhance the rheological and mechanical properties of clayey materials by adding starches
Authors: Alhaik, Ghaith
Ferreira, Michel
Dubois, Vincent
Wirquin, Eric
Tilloy, Sébastien
Monflier, Eric
Aouad, Georges 
Affiliations: Department of Civil and Environmental Engineering 
Keywords: Clayey material
Rheological properties
Mechanical behavior
Issue Date: 2017
Part of: Journal of construction and building materials
Volume: 139
Start page: 602
End page: 610
This research work highlights the rheological and mechanical behavior of clayey/starch mixes. Several native and derivate starches have been studied in association with two types of clayey materials: quarry fines and kaolinite. The mixes were manufactured with a constant starch/clayey material ratio of 1%. The optimal water content has been determinate by the flow test. The rheological and mechanical tests have shown a significant effect of starch on the properties of mixes. In the rheological part, most starches have induced an increase up to four times the thixotropic index for quarry fines, while a decrease of this parameter has been observed with the kaolinite. From a mechanical point of view, all starches increase mechanical strengths whatever the clayey material.
DOI: 10.1016/j.conbuildmat.2016.11.130
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Civil and Environmental Engineering

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