THE EXISTENCE OF NON-CRYSTALLINE PHASES IN ANHYDROUS PORTLAND CLINKER: AN X-RAY DIFFRACTION INVESTIGATION

An X-ray diffraction investigation

Autores

  • Paulo Matos Universidade do Estado de Santa Catarina (UDESC) https://orcid.org/0000-0002-3695-1356
  • José Andrade Neto Universidade do Estado de Santa Catarina (UDESC)
  • Ana Paula Kirchheim Universidade Federal do Rio Grande do Sul (UFRGS)
  • Erich Rodríguez Universidade Federal de Santa Maria (UFSM)
  • Carlos Campos Universidade Federal de Santa Catarina (UFSC)/ Max Planck Institute for Solid State Research

Palavras-chave:

XRD, Portland clinker, ACn, Amorphous, Rietveld refinement

Resumo

Portland clinker (PC) may contain an amorphous or non-crystalline (ACn) fraction most likely coming from poor phase crystallization, although there is not a consensus on that. This work assessed the presence of ACn in eight commercial PC, using CuKα1,2 and strictly monochromatic CuKα1 radiation and the external standard method. The results showed that CuKα1,2 radiation generally yielded equivalent or higher ACn contents than CuKα1 measurements. Four clinkers showed ACn contents of 8.6-12.2 wt% and 4.5-8.3 wt% respectively for CuKα1,2 and CuKα1 measurements, above the precision threshold. Thus, anhydrous Portland clinker may present an important ACn content.

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Publicado

2024-01-15

Como Citar

Matos, P., Andrade Neto, J. ., Kirchheim, A. P., Rodríguez, E., & Campos, C. (2024). THE EXISTENCE OF NON-CRYSTALLINE PHASES IN ANHYDROUS PORTLAND CLINKER: AN X-RAY DIFFRACTION INVESTIGATION: An X-ray diffraction investigation. SIMPÓSIO BRASILEIRO DE CIÊNCIA DO CIMENTO, 1(00), 1–5. Recuperado de https://eventos.antac.org.br/index.php/sbcc/article/view/3648

Edição

Seção

Métodos de caracterização de cimentos e materiais cimentícios

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