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  1. mckeejrob

    ASTM C 90 CMU testing procedures

    Thank you concretemasonry for the help. I'll check out that NCMA web site.
  2. mckeejrob

    ASTM C 90 CMU testing procedures

    I am the QA on a hospital addition in Afghanistan and I have a contractor who is trying to make his own concrete block on site. I was curious if anyone knew a website that I could view the ASTM specs. I'm only finding sites that I have to pay for the info. I'm just needing to know the number...
  3. mckeejrob

    fiber voids..what are they?

    I am filling in as the project engineer on a road project in Afghanistan, as well as a large concrete placement for some Helopads. I am reading through the design submittal and came across "fiber voids". I'm not familiar with the term and since the submittal is vague as to what exactly it is...
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