Dr J D Bapat delivered a talk on "Durability of Concrete" on 21 February, the Foundation Day of Indian Concrete Institute (ICI), Pune Centre. There were around 140 participants.
The talk covered the following aspects:
Strength and durability aspects of concrete, with mineral
admixtures were presented. Aspects responsible for improvement in durability,
such as interfacial transition zone (ITZ), permeability reduction, reduced
temperature rise, long-term strength improvement were discussed. Importance
of curing was be stressed. Focus was on durability of concrete with
respect to resistance towards carbonation, alkali-aggregate reaction (AAR), chloride
attack (corrosion), external sulphate attack, delayed ettringite formation
(DEF). Mention was also be made of the relevant testing methods, such as
carbonation depth measurement, accelerated mortar bar test (AMBT) for alkali
aggregate reaction, rapid chloride permeability test (RCPT) for corrosion.
The lecture was followed by highly participative question-answer session for about 45 minutes.
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