Journal
JOURNAL OF BUILDING ENGINEERING
Volume 41, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jobe.2021.102400
Keywords
Crystalline admixture; Self-healing; Permeability-reducing admixture; Mechanical recovery; Durability
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES) [1414016]
- CNPq-Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- FAPERJ-Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro
- FINEP-Empresa Brasileira de Inovacao e Pesquisa
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This paper provides an overview of relevant studies on the enhancement promoted by crystalline admixtures (CAs) in cement-based materials, acting both as permeability reducers and self-healing stimulators. The main mechanisms of CAs, their impact in cementitious systems, and synergetic effects with other constituents are discussed. Conclusions highlight research needs and future works in this area.
This work presents an overview of the most relevant studies developed to understand the enhancement promoted by the double effect of the crystalline admixtures (CAs), both as permeability-reducers and as self-healing stimulators in cement-based materials. Thus, an in-depth investigation was carried out of the main mechanisms of CAs disclosed in the literature in order to associate the relationship between healing products and performance improvement in cementitious materials. Further, an examination of the impact of different factors in cementitious systems with CAs was reported, as well as the synergetic effects of CAs with other constituents. Finally, conclusions were drawn highlighting research needs and addressing future works in order to provide a substantial overview of the latest information in the literature for those who are working or intend to work with this type of admixture.
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