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Title: Robustness of Self-Consolidating Concrete Incorporating Different Viscosity-Enhancing Admixtures

Author(s): Kamal H. Khayat

Publication: Web Session

Volume: RobustnessSaltLake2018abreviated.pdf

Issue:

Appears on pages(s):

Keywords:

DOI:

Date: 3/26/2018

Abstract:
Given the sensitivity of SCC to variations in raw material characteristics, greater care should be taken for the selection of constituent materials and mixture proportioning to secure adequate robustness. The presentation will discuss the effect of various combinations of viscosity-enhancing admixtures (VEAs) and high-range water-reducing admixtures (HRWRAs) on the robustness of SCC. For each group, mixtures with sand humidity corresponding to saturated surface dry (SSD) condition as well as ±1% humidity were prepared. The tested mixtures were ranked in terms of robustness using the values of the coefficient of variation for all of 20 investigated fresh and hardened concrete properties. Test results indicate a large dependency of the type of chemical admixture on securing high level of robustness of the concrete to changes in materials characteristics.