Rheological Properties of Cementitious Materials Containing Mineral Admixtures

The rheological properties of cementitious materials containing fine particles, such as mineral admixtures (MA), were investigated using a Rotovisco RT 20 rheometer (Haake) with a cylindrical spindle. The mineral admixtures were finely ground blast furnace slag, fly ash and silica fume. The cementitious materials were designed as one, two and three components systems by replacement of ordinary portland cement (OPC) with these mineral admixtures. The rheological properties of one-component system (OPC) were improved with increasing the dosage of PNS-based superplasticizer. For two-components systems, yield stress and plastic viscosity decreased with replacing OPC with blast furnace slag (BFS) and fly ash (FA). In the case of OPC-silica fume (SF) system, yield stress and plastic viscosity steeply increased with increasing SF. For three components systems, both OPC-BFS-SF and OPC-FA-SF systems, the rheological properties improved, compared with the sample with SF. In the two and three components systems, the rheological properties of samples containing BFS improved much more than with FA replacement alone.

[1]  Chiara F. Ferraris,et al.  The influence of mineral admixtures on the rheology of cement paste and concrete , 2001 .

[2]  M. Regourd.  A Review of the use of Proton Magnetic Resonance to Study Superplasticizers , 1986 .

[3]  Kazuo Yamada,et al.  Interaction between cement and chemical admixture from the point of cement hydration, absorption behaviour of admixture, and paste rheology , 1999 .

[4]  M. Piotte,et al.  Progress in Understanding the Functional Properties of Superplasticizers in Fresh Concrete , 1994, SP-148: Fourth CANMET/ACI International Conference on Superplasticizers and chemical admixtures in Concrete.

[5]  Phillip Frank Gower Banfill,et al.  THE RHEOLOGY OF FRESH CEMENT AND CONCRETE - A REVIEW , 2003 .

[6]  Hamlin M. Jennings,et al.  The influence of mixing on the rheology of fresh cement paste , 1999 .

[7]  H. Ohnuma,et al.  EFFECTS OF PROPERTIES OF FLY ASH ON FLUIDITY OF PASTE , 2002 .

[8]  M. Cyr,et al.  Study of the shear thickening effect of superplasticizers on the rheological behaviour of cement pastes containing or not mineral additives , 2000 .

[9]  Phillip Frank Gower Banfill,et al.  The rheology of fresh concrete , 1983 .

[10]  A. Akgerman,et al.  Adsorption of Phenolic Compounds on Fly Ash , 1996 .

[11]  Xiong Zhang,et al.  The effect of ultra-fine admixture on the rheological property of cement paste , 2000 .

[12]  Canmet,et al.  Seventh CANMET/ACI international conference on superplasticizers and other chemical admixtures in concrete , 1994 .

[13]  R. Pellenq,et al.  Electrostatic Attraction between Two Charged Surfaces: A (N,V,T) Monte Carlo Simulation , 1997 .

[14]  Chiara F. Ferraris,et al.  Measurement of the Rheological Properties of High Performance Concrete: State of the Art Report , 1999, Journal of Research of the National Institute of Standards and Technology.

[15]  Phillip Frank Gower Banfill,et al.  Rheology of fresh cement and concrete , 1991 .

[16]  Pierre-Claude Aitcin,et al.  Superplasticizers: How they Work and Why They Occasionally Don't , 1994 .

[17]  T. Nawa,et al.  Effect of Alkali Sulfate on the Rheological Behavior of Cement Paste Containing a Superplasticizer , 1989, SP-119: Superplasticizers and Other Chemical Admixtures in Concrete.

[18]  Sidney Mindess,et al.  Rheology of high-performance concrete: Effect of ultrafine particles , 1998 .