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Matco Associates Inc. Specialists in Materials Engineering, Corrosion and Failure Analysis

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Concrete Testing (Petrography): Hardened Concrete

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    Why is it that petrographic chemical analysis is required on hardened concrete even thou we have passed the Water Absorption Test and RCPT. Also there are no signs of failure. Does it mean that our client is futuristic? If you have experience these condition could you elaborate further.
    • CommentAuthorzee
    • CommentTimeFeb 17th 2008
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    Besides water absorption, petrographic analysis can be used to determine chemical attack, identification of reactive aggregate, strength, mixture proportion estimates (such as water/cement ratio), cement and fly-ash content, corrosion potential of embedded steel, degree of carbonation, aggregate size and distribution, presence of alkali-aggregate or sulfate reaction.
    • CommentAuthori88cy
    • CommentTimeJun 24th 2009
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    Hello!
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    • CommentAuthorjohnwentz
    • CommentTimeDec 21st 2009 edited
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    Performing petrographic analysis in a logical sequence and using qualified personnel makes this type of analysis fundamental in concrete characterization. A well-performed analysis can elucidate the responsibility and causes of failure, as well as suggestions for repair.
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    Concrete Repair Guide: http://concrete-repair-guide.blogspot.com

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