Controlling the quality of fresh concrete - a new approach

Download
  1. (PDF, 530 KB)
  2. Get@NRC: Controlling the quality of fresh concrete - a new approach (Opens in a new window)
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleMagazine of Concrete Research
Volume52
IssueOctober 5
Pages353363; # of pages: 11
Subjectconcrete workability, rheology, consistency; Concrete
AbstractTraditionally, the slump test has been used to measure concrete consistency. However, many researchers contend that the slump alone is not a sufficient measure of consistency and that other quantifiable rheological properties such as shear yield stress and plastic viscosity are more representative and should be considered. A SLump Rate Machine (SLRM) was adapted and calibrated, to consistently measure the plastic properties for a number of concrete mixes, namely slump rate and slump flow. Furthermore, a theoretical model was developed to correlate the slump flow and slump rate with the shear yield stress and plastic viscosity of fresh concrete, respectively. Employing the SLRM and the theoretical model has resulted in an efficient new approach to adequately predict the rheological behaviour of fresh concrete as well as to provide reasonably accurate values for shear yield stress and plastic viscosity.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number43146
9637
NPARC number20331317
Export citationExport as RIS
Report a correctionReport a correction
Record identifierd9127945-5990-47d7-953a-744f4c60b3f4
Record created2012-07-18
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)