Sample 1
Sample 2
Sample 3
June 2010
In order to colour the concrete an iron oxide based additive will be added to the concrete when it is mixed. The Technical Committee decided that based on the varying colours of the existing floor a uniform dark grey colour would be the best compromise of what colour we should make the Cathedral floor. To get the right mix ratio a test was conducted. Three samples were made of different ratios of colour additive to concrete. After curing, the samples were transported to the cathedral and the team assembled to choose the best colour. Sample 3 was chosen.
So fascinating to follow along.
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