Abstract

AbstractAn autoclave with an externally generated steam supply and fitted with windows has been used to observe calcium silicate brick specimens with varying initial moisture contents during the autoclaving cycle. In particular, gains and losses in weight due to condensation and evaporation of water were recorded.Tests on the autoclaved specimens indicated that bulk density, compressive and transverse strength varied with initial water contents of the mix within the range 4 to 14%. Specimens with high water contents expanded and cracked during autoclaving. C2SH(A) rather than CSH(II) was formed in mixes with low water contents at short autoclaving times.

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