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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php what are the retarders? - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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what are the retarders?
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returds is a type of admixtures, which is used for delay in stting time of concrete. Returds- Suger, Gypsum.
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