st/1990/March.aspx">March</a> <a href="/table-of-contents/Concrete-Repair-Digest/1990.aspx">1990</a></li>
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          Posted on:
          March 1, 1990</li>
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<h1>Don't play with resin-catalyst ratio to change set time</h1>
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		<div class="articlepage"><dl><dt>We do epoxy injection work and sometimes need to slow the hardening rate of the