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高吸水聚合物(SAP)具有特殊的功能,可作为一种新型多功能混凝土外加剂。其中一个重要的应用领域是作为具有较低水胶比的混凝土内养护材料。在混凝土中均匀分布的SAP颗粒,可以补充水泥石自收缩消耗用水,因此可以降低自收缩以及由此产生裂缝的危害。并且SAP可以在混凝土中可形成稳定的气泡系统,提高混凝土的抗冻融能力。本文除阐述了SAP在现代混凝土中可能的应用领域,还列举应用案例阐述了SAP作为新型混凝土外加剂对现代混凝土技术发展的巨大潜力。
Superabsorbent polymer (SAP) has a special function as a new multifunctional concrete admixture. One of the most important applications is as a concrete curing material with a lower water-cement ratio. The uniform distribution of SAP particles in the concrete can supplement the self-shrinking consumption of cement stones, thus reducing the risk of self-shrinkage and resulting cracks. And SAP can form a stable bubble system in concrete, improve the concrete anti-freeze-thaw ability. In addition to the possible applications of SAP in modern concrete, this paper also illustrates the potential of SAP as a new type of concrete admixture for the development of modern concrete technology.