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采用物理和化学方法考察了添加辅助性胶凝材料对水泥水化和耐久性的影响。根据辅助性胶凝材料的相似性和差异性将其分为潜在水化性、火山灰活性,并可进一步分为硅酸盐类、铝酸盐类、碳酸盐类等。还研究了包括辅助性胶凝材料与添加剂之间的相互作用,如减水剂、促凝剂等。结果表明:添加辅助性胶凝材料对混凝土耐久性有一定影响,如抗氯离子渗透、抗碳化、碱骨料反应,以及抗硫化物腐蚀等。在相同水胶比时,添加辅助性胶凝材料有助于提高混凝土的抗老化性能。但碳化作用除外,这可以通过降低水胶比来提高混凝土的耐久性。
Physical and chemical methods were used to investigate the effects of adding auxiliary cementitious materials on hydration and durability of cement. According to the similarities and differences of auxiliary cementitious materials, it is divided into potential hydration and pozzolanic activity, and can be further divided into silicates, aluminates, carbonates and the like. The interactions between auxiliary cementitious materials and additives, such as water reducers, accelerators, and the like, have also been studied. The results show that adding auxiliary cementitious material has certain influence on the durability of concrete, such as resistance to chloride ion penetration, carbonation, alkali aggregate reaction and anti-sulfide corrosion. At the same water-cement ratio, the addition of ancillary cementitious materials helps to improve the anti-aging properties of concrete. However, with the exception of carbonation, which can improve the durability of concrete by reducing the water to binder ratio.