Can HVFAG technology be adopted for site-mixed concrete?

摘要

It was in the year 2000 that I first came to know about the technology of high-volume fly ash (HVFAj concrete. Two papers gave a general idea about the technology. However, I believed that the technology was in the nascent stage and had not gone beyond the realm of laboratory investigations, until I heard about some demonstration projects being conducted in India. Being quite enthusiastic to know more about this technology and the latest developments in this field, I seized the opportunity of attending the one-day seminar on the subject, organised jointly by the Confederation Indian Industry (CII), India and CANMET, Canada, in the second week of October 2004. speakers including Dr V. M. Malhotra, as also the panel discussion, I was left wondering as to what extent this new technology would be suitable for application in the typical Indian conditions, dominated by the preponderance of site-mixed concrete, most of which is volume batched. I have spent more than 35 years on various construction sites and based on my long experience I would like to share my views on the subject.