Abstract
The use of Self Consolidating Concrete (SCC) can lead to improved working environment, and better form filling and surface finishing. However, its use is limited due to the low robustness regarding stability, especially for low grade concrete e.g. NS-EN 206-1 M60 B30. This report builds further on the findings published in a previous COIN report in which the reference SCC on the verge of instability is stabilized with either filler or chemical stabilizers, and the effect of stabilization on the stability and the rheology of the SCCs is investigated. In this study the combination of fillers and admixtures to stabilize SCC is included.
The combination of fillers and chemical stabilizers increases the viscosity of both matrix and concrete compared to the reference. In addition, they lead to an increased yield stress and viscosity of the matrix. The stability, however, does not seem to be improved compared to using either filler or chemical stabilizer to stabilize the SCC.