Controlling the Consistency of High-Performance Concrete by Mixing Torque in the Ready-Mixed Concrete Plant

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Controlling the Consistency of High-Performance Concrete by Mixing Torque in the Ready-Mixed Concrete Plant

Author(s): N. Nishiyama

Publication: Special Publication

Volume: 149

Issue:

Appears on pages(s): 633-648

Keywords: admixtures; flowability; high-performance concretes; loads (forces); mixing time; quality control; torque; water-cement ratio; Manufacturing

Date: 10/1/1994

Abstract:
Mixing torque is highly related to the consistency of concrete. A high-performance concrete with a unit amount of water as low as 165 kg/m 3 is viscous and exhibits higher torque at mixing, and the decrease in torque with the mixing time is not so great. Flowing concrete, a high-performance concrete with high flowa bility, with a unit amount of water of 180 kg/m 3 shows characteristic low viscosity on the contrary, which may require more practical consistency control. Paper proposes a new method of controlling the consistency of high-performance concrete by means of load current at the ready-mixed concrete plant.