Pavement, as an important transportation infrastructure, plays an essential role in modern society. Joints and cracks, which are either designed for or created by internal and external means, must be filled in with proper sealant to stop penetration of water into the surface layer and layers beneath; otherwise, they usually lead to severer premature structural failure. In this paper, we briefly reviewed the various types of sealants available for cement concrete pavement, their performance, and their selection and evaluation methods. In particular, we discussed some new developments in sealant research, that is, using shape memory polymers as sealants. We concluded the brief review with some future perspectives.

路面作为重要的交通基础设施，在现代社会中发挥着至关重要的作用。为内部和外部方法设计或产生的接缝和裂缝必须用适当的密封剂填充，以阻止水渗透到表层和下面的层中；否则，它们通常会导致更严重的过早结构失效。在本文中，我们简要回顾了可用于水泥混凝土路面的各种类型的密封剂，它们的性能，以及它们的选择和评估方法。特别是，我们讨论了密封剂研究的一些新进展，即使用形状记忆聚合物作为密封剂。我们以一些未来的观点结束了简短的回顾。