Correlation of rheological properties to durability and strength of hardened concrete

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DOIResolve DOI: http://doi.org/10.1061/(ASCE)0899-1561(2003)15:4(391)
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TypeArticle
Journal titleJournal of Materials in Civil Engineering
Volume15
IssueJuly/August 4
Pages391399; # of pages: 9
Subjectconcrete durability; sorption; permeability; vibration; admixtures; rheological properties; Concrete
AbstractPremature deterioration of concrete structures has created an awareness and concern about the durability of concrete. Concrete mixtures used in the construction of residential basement walls and foundations have a high w/c ratio (w/c > 0.6) and low cement content (<280 kg/m3). The result is friable concrete with highly porous surface layer and high potential for cracking. The defects have a direct impact on the durability of concrete. This experimental study examines the effects of three parameters: mix design, formwork and consolidation, on the quality of the surface of high w/c concrete. The fresh concrete is characterised using its rheological properties, in particular, its yield stress and plastic viscosity. Pulse velocity, pull off strength and compressive strength were measured to evaluate the quality and the mechanical properties of the hardened concrete. The durability of the hardened concrete was evaluated by measuring its surface transport properties, namely its air permeability and sorptivity. The results show that it is possible to correlate the rheological properties of fresh concrete to the mechanical and permeation properties of the hardened concrete.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46652
15812
NPARC number20378986
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Record identifiera43da737-b5c8-4064-a8d9-d4595ea2aee6
Record created2012-07-24
Record modified2016-05-09
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