| 摘要 |
<p>PURPOSE: An admixture for strength enhancement, a concrete composition using thereof, and a cement mortar composition using thereof are provided to enhance early strength of concrete composition or cement mortar composition. CONSTITUTION: An admixture for strength enhancement comprises 20-80 weight% of slag powder, 1-30 weight% of anhydrous gypsum, 5-50 weight% of calcium sulfate. The calcium sulfate has ignition loss(Ig.loss) of 13-14%, and comprises 55-65 weight% of CaO, 0.1-5 weight% of siO2, 0.1-3 weight% of al2O3, 1-10 weight% of MgO, 15-40 weight% of SO3, 0.1-3 weight% of fe2O3, 0.01-0.3 weight% of K2O, 0.01-0.3 weight% of V. The admixture additionally includes 1-20 weight% of copolymers which includes polyoxyalkylene alkenyl ether sulfate. The admixture additionally includes 1-20 weight% of steam supply and power generating plant fuel ash 1-20 weight%.</p> |
