ABSTRACT
Cementitious materials are deteriorating progressively due to varieties of physical, chemical, thermal, and biological processes. Various approaches are adopted to develop self-healing cement-based materials, while experiments are conducted to establish a new method of self-healing. Tests at the microstructure level are commonly performed to maximize the reliability of the results. Only a few tests are conducted at the nanostructure level. This chapter reviews all the available tests and methods on self-healing efficiency assessment of cement-based materials and recent development of innovative experimental strategies. Use of supplementary cementing materials, polymers, and microorganisms are the most familiar approaches to achieve effective self-healing. Determining the effect of self-healing to successfully sealing crack width is the key issue.
