Mignon Arn, Snoeck Didier, Dubruel Peter, Van Vlierberghe Sandra, De Belie Nele
Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark Zwijnaarde 904, B-9052 Ghent, Belgium.
Polymer Chemistry and Biomaterials Group, Department of Macromolecular and Organic Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281, B-9000 Ghent, Belgium.
Materials (Basel). 2017 Feb 28;10(3):237. doi: 10.3390/ma10030237.
Cracking is a major concern in building applications. Cracks may arise from shrinkage, freeze/thawing and/or structural stresses, amongst others. Several solutions can be found but superabsorbent polymers (SAPs) seem to be interesting to counteract these problems. At an early age, the absorbed water by the SAPs may be used to mitigate autogenous and plastic shrinkage. The formed macro pores may increase the freeze/thaw resistance. The swelling upon water ingress may seal a crack from intruding fluids and may regain the overall water-tightness. The latter water may promote autogenous healing. The use of superabsorbent polymers is thus very interesting. This review paper summarizes the current research and gives a critical note towards the use of superabsorbent polymers in cementitious materials.
开裂是建筑应用中的一个主要问题。裂缝可能由收缩、冻融和/或结构应力等因素引起。虽然有多种解决方案，但高吸水性聚合物（SAPs）似乎是解决这些问题的有效方法。在早期阶段，SAPs吸收的水分可用于缓解自收缩和塑性收缩。形成的大孔隙可提高抗冻融性。遇水膨胀可阻止裂缝中流体的侵入，并可恢复整体的水密性。这些水分还可促进自愈合。因此，高吸水性聚合物的应用非常具有吸引力。本文综述了当前的研究，并对高吸水性聚合物在胶凝材料中的应用给出了批判性的评价。
