Conventional castables can contain around 15-30 % cement binder.
2.
The most probable, they said, was that rain over the years had leached the hydraulic cement binder within the 32-inch by 48-inch Tectum panels.
3.
Stone aggregates, like Terrazzo, can also used instead of raw cut stone and are available as either preformed tiles or to be constructed in-place using a cement binder.
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