Def-related expansion in concrete samples and blocks with nano-sio2

Constancy is necessary in finding strategies for enhancing the lifetime of concrete structures, through preventing expansive chemical reactions. Research has been published regarding the use of SCMs in DEF expansions trials. Nevertheless, there is little research involving DEF focused on incorporating nanomaterials into the cement matrix. Thus, the aim of this investigation was to evaluate the potential of DEF mitigation using nano-SiO2. Concrete blocks and laboratory specimens were tested and as a result, a high level of DEF expansions in concrete was observed, with and without nanomaterials, noting that nanosilica was not effective in mitigating DEF.