History
Foamed concrete has a surprisingly long history and was first patented in 1923, mainly for use as an insulation material
The first comprehensive review on foamed concrete was presented by Valore in 1954 and a detailed treatment by Rudnai and Short and Kinniburgh in 1963, summarising the composition, propertSignificant improvements over the past 20 years in production equipment and better quality surfactants (foaming agents) has enabled the use of foamed concrete on a larger scale.
➢ Significant improvements over the past 20 years in production equipment and better quality surfactants (foaming agents) has enabled the use of foamed concrete on a larger scale.
Foam concrete is produced either by :-
pre-foaming method
mixed foaming method
Pre-foaming method comprises of producing base mix and stable preformed aqueous foam separately and then thoroughly blending foam into the base mix. ➢ In mixed foaming, the surface active agent is mixed along with base mix ingredients and during the process of mixing, foam is produced resulting in cellular structure in concrete .
MAKING OF FOAMED CONCRETE 1) The components of foam concrete mix should be set by
their functional role in order as follows:
foaming agent
binding agent
water
AggregateES
find enclosed herewith the detailed presentation on foam concrete
