Influence of mixing techniques on properties of high performance concrete

Abstract

Six mixing methods were used to prepare high performance concrete (HPC) of high flowability. The properties of the fresh and hardened concrete are measured. It is found that adding all superplasticizers (SP) in watts in one dose can ensure that workability can be maintained. The tested results identified a most efficient and economical method in making HPC. especially for lower binder content, which requires less mixing time and less amount of SP in producing the resulting material with higher flowability and better compressive strength than the other methods. (C) 2001 Elsevier Science Ltd. All rights reserved.