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In situ chemical modification of C–S–H induced by CO2 laser irradiation

Autor
Martínez Ramírez, Sagrario; Díaz, L.; Martín-Garrido, M.; Fernandez-Carrasco, L.; Torrens, D.
Tipus d'activitat
Article en revista
Revista
Materials and structures
Data de publicació
2018-02
Volum
51
Pàgina inicial
1
Pàgina final
9
DOI
https://doi.org/10.1617/s11527-018-1150-y Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/114832 Obrir en finestra nova
https://www.researchgate.net/publication/322708680_In_situ_chemical_modification_of_C-S-H_induced_by_CO2_laser_irradiation Obrir en finestra nova
URL
https://link.springer.com/article/10.1617/s11527-018-1150-y Obrir en finestra nova
Resum
Fire-induced compositional changes lead to strength loss and even failure in cement and concrete. Calcium silicate hydrate (C–S–H) gel, the main product of cement hydration, dehydrates at 25–200 °C, while temperatures of 850–900 °C alter its structure. A Raman spectroscopic study of the amorphous and crystalline phases forming after CO2 laser radiation of cement mortar showed that C–S–H dehydration yielded tricalcium silicate at higher, and dicalcium silicate at lower, temperatures...
Citació
Martínez Ramírez, Sagrario, Díaz, L., Martín-Garrido, M., Fernandez-Carrasco, L., Torrens, D. In situ chemical modification of C–S–H induced by CO2 laser irradiation. "Materials and structures", Febrer 2018, vol. 51, p. 1-9.
Paraules clau
Ca2SiO4, Ca2SiO5, Calcium silicate hydrate, Degradation, Microstructure, Spectroscopy
Grup de recerca
LiTA - Laboratori d'Innovació i Tecnologia en l'Arquitectura

Participants

  • Martínez Ramírez, Sagrario  (autor)
  • Díaz Sol, Luis M.  (autor)
  • Martín Garrido, Moisés  (autor)
  • Fernández Carrasco, Lucía  (autor)
  • Torrens Martin, David  (autor)