In terms of linear shrinkage, all mixtures were in compliance
with the reference value (LS 6%). In general, statistical tests
showed that different mixtures showed different behaviors.
Although mixtures A-G did not comply with the reference values
for ignition loss, water absorption, porosity, and bulk density, they
did show good flexural strength. Thus, in terms of linear shrinkage
and with the exception of mixture H, all mixtures can be used in the
production of solid bricks (FS 20 kgf/cm2
). Further, mixtures C-G
can be used in the production of roof tiles because they showed
higher flexural strength (FS 30 kgf/cm2
). Statistical tests
confirmed significant differences between mixture H and mixtures
A, D, E, F, and G.