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by bobho1
Thu Oct 11, 2007 9:57 pm
Forum: Concreting, Drives, Paths and Patios Forum
Topic: concrete garage sub base
Replies: 2
Views: 5513

concrete garage sub base

I'm replacing a concrete garage base, after digging up the original concrete, the base under is constructed of red ash. Is red ash a suitable material to lay concrete on or does it react with the concrete and cause cracking ?.
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