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nature : short shakedown. It reflects the hardening slurry due to uneven expansion and deformation conditions. Cement quality assessment is an important one of the indicators is to guarantee the quality of concrete work necessary conditions. Portland cement for the series, resulting in poor stability of the cement is mainly because of excessive cement existence of free calcium oxide, magnesium oxide or sulfate free due. National Cement standards require a determination of the stability and soundness standard method of compliance or standards. The most commonly used method for a trial cake, Lui clips and swelling pressure steaming method.
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