Rheological properties of self-consolidating concrete stabilized with fillers or admixtures

Title: Rheological properties of self-consolidating concrete stabilized with fillers or admixtures
Author(s): H. Vikan, K. De Weerdt, and S. Smeplass
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 216 - 222
Total Pages: 7
Nb references: 9
Language: English

Abstract: The mix design of self-consolidating concrete (SCC) is crucial in order to obtain a robust SCC that is fluid enough to completely fill the form and simultaneously stable against segregation of aggregates and bleeding. This study investigates the effect of chemical stabilizers or additional filler on the castability and rheological properties of concrete and its matrix.
Viscosity and thus thixotropy is of special interest since these parameters are believed to influence stability, form-filling ability, the migration and evacuation of entrapped air bubbles and thus the final surface quality of hardened concrete elements.
The study includes three different types of filler: limestone powder, fines from crushed sand, and fines from sand which is both crushed and washed. Two types of chemical stabilizers and two types of superplasticizers with different stabilizing/splitting properties have, moreover, been used. Rheological properties have been measured both on concrete and concrete equivalent matrix.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00