| Texto completo | |
| Autor(es): |
John, Vanderley M.
[1]
;
Quattrone, Marco
;
Abrao, Pedro C. R. A.
;
Cardoso, Fabio A.
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Dept Construct Engn, Escola Politecn, BR-05508070 Sao Paulo - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CEMENT AND CONCRETE RESEARCH; v. 124, OCT 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
This paper discusses possible changes in cement standards to cope with megatrends: climate change and industry 4.0. Most standards are prescriptive, defining cements by composition of SCMs, hence the number of types increase, and composition limits widen. Cements are classified by compressive strength of fixed water/cement mortars. This pragmatic approach ignores physical effects, that results in variable mixing water demand. It hinders the development of cements with low water demand, products of optimized particle engineering and dispersants, which allows formulate cements with lower clinker fraction. Also, most standard tests are difficult to automate to generate large datasets crucial to train artificial intelligence. Performance-based standards are an alternative, but simple and progressive approach is recommended to ease transition. Cement types should not be solely defined by composition but rather classified by performance characteristics including durability and environmental. Combined water fraction, cwf, may be a good parameter to replace strength class. (AU) | |
| Processo FAPESP: | 14/50948-3 - INCT 2014: tecnologias ecoeficientes avançadas em produtos cimentícios |
| Beneficiário: | Vanderley Moacyr John |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |