掺矿粉混凝土耐久性研究

本文介绍了掺矿粉混凝土的耐久性，重点研究了掺加矿粉对混凝土水化热、抗水渗透性能、抗氯离子渗透性能、抗碳化性能以及抗冻性能的影响。研究结果表明：混凝土中掺加矿粉，可降低浆体水化热；大幅提高混凝土的抗水渗透性能；显著提高混凝土抗氯离子渗透性能，尤其是采用矿粉和粉煤灰复配技术并结合引气剂的使用；在同强度的条件下掺矿粉混凝土和普通混凝土具有相同的抗碳化作用能力；在强度和含气量相同的条件下掺矿粉混凝土和普通混凝土具有相同的抗冻融能力。

The durability of applying ground granulated slag in concrete

The durability of applying ground granulated slag in concrete was introduced.Mixing mineral powder can influence heat of hydration,water-resisting property,anti-chlorine ion permeability,anti-carbonization property,and anti-freezing of concrete.The result shows that the heat of hydration of mortar can be reduced,the water-resisting property and anti-chlorine ion permeability can be improved after mixing mineral powder,especially by the compound mixing technology and air-entraining agent.Under the same strength,concrete with mineral powder and common concrete have the same anti-carbonization property and anti-freezing property.