363
4000.023
Ryan, W.G.
ICLC
Paper
International Congress on Lightweight Concrete
1968
May 27-29
May 27-29, 1968, Sess. A
1-5
N
The production of lightweight concrete in Australia to date has been confined mainly to the areas around Sydney and Melbourne in which sources of manufactured lightweight aggregates have been available since the late 1950s. Some deposits of a naturally occurring lightweight aggregate, viz. scoria, have been located in the western areas of the State of Victoria, but their use so far has been confined primarily to concrete masonry block manufacture in the areas adjacent to the deposits.As there is very little site mixing of concrete in Sydney and Melbourne, the producers of ready-mixed concrete have been directly involved from the earliest stages in the development and use of lightweight aggregates in producing structural lightweight concretes for structures of the type referred to by Stigter and Brown in their papers to this Congress. Simultaneously with this work, the Victorian Housing Commission has been developing the use of such concretes in a large-scale factory-mixing precasting plant operation for structures of the type referred to by Brown.