Title:
Controlling the Consistency of High-Performance Concrete by Mixing Torque in the Ready-Mixed Concrete Plant
Author(s):
N. Nishiyama
Publication:
Symposium Paper
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
DOI:
10.14359/4259
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.