Effects of Binding Materials and Chemical Admixtures on Rheological Constants of Fresh Paste

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Title: Effects of Binding Materials and Chemical Admixtures on Rheological Constants of Fresh Paste

Author(s): Shinzou Nishibayashi, Akira Yoshino, K. Yamura, Y. Okawa and M. A. Peres Lara

Publication: Special Publication

Volume: 173

Issue:

Appears on pages(s): 343-358

Keywords: Admixtures; plastics; rheological properties; viscosity; water

Date: 9/1/1997

Abstract:
This paper describes the effects of properties of powder such as specific surface and solid volume percentage on the plastic viscosity of fresh paste with admixtures. Eight types of blended powder and three types of high-range water-reducing admixtures (HRWRA) were used, and the plastic viscosity of paste mixed with these materials was measured, keeping the yield value of paste constant. The fresh paste is considered to be a type of highly concentrated suspension, so the authors propose a method to predict plastic viscosity based on this concept. In this method, the ratio of powder content, the specific surface, and solid volume percentage of powder, the type of admixture, and other factors are taken into account.