This mixture of pozzolana and lime was then added to an aggregate.

人们把火山灰与石灰的混合物加到集料中。

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Microsilica is a sort of tiny pozzolana with high-active silicon dioxide.

硅灰是一种极细的火山灰质的高活性二氧化硅。

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Microsilica is a sort of tiny pozzolana with high-active silicon dioxide.

硅灰是一种极细的火山灰质的高活性二氧化硅。

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