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Concrete

Concrete

Concrete

(OP)
Can yoy mix type 1 and type 3 cement in the same mix ?

RE: Concrete

I wouldn't because Type III cement is high-early strength cement.  This means that some of you concrete matrix is gaining more strength quicker than others.  Intuitively, this doesn't sound like a good idea.  Also, the heat of hydration might be different for the two types also which would lead to cracks.

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