2026-05-30T15:50:11Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/136542026-02-03T11:34:58Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Álvarez-Pinazo, Gema
author
Santacruz-Cruz, María Isabel
author
León-Reina, Laura
author
García-Aranda, Miguel Ángel
author
Gómez-de-la-Torre, María de los Ángeles
2017-05-16T10:51:36Z
2017-05-16T10:51:36Z
2013
1520-5045
http://hdl.handle.net/10630/13654
Belite calcium sulfoaluminate (BCSA) cements are low-CO2 building materials. However, their hydration behavior and its effect on mechanical properties have still to be clarified. Here, we report a full multitechnique study of the
hydration behavior up to 120 days of nonactivated and activated BCSA laboratory-prepared clinkers, with β- or αH-belite as main phase, respectively. The effects of the amount of gypsum added were also studied. The hydration and crystallization processes are reported and discussed in detail. Finally, shrinkage/expansion data are also given. The optimum amount of gypsum was close to
10 wt %. Our study has demonstrated that β-belite reacts at a higher pace than α′H-belite, irrespective of the gypsum content.
The hydration mechanism of belite determines the development of the mechanical strengths. These are much higher for activated BCSA cement, ∼65 MPa at 120 days, against ∼20 MPa for nonactivated BCSA cement, with the latter having larger amounts of stratlingite.
eng
by-nc-nd
Construcciones de hormigón
Hydration Reactions and Mechanical Strength Developments of Iron- Rich Sulfobelite Eco-cements
journal article
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URL
https://riuma.uma.es/bitstreams/54cb873f-dbd6-415e-bf8e-85d5518a962d/download
File
MD5
671edaabd9c05c18a7e002a9454b5305
1490856
application/pdf
2013_IECR_BCSA_Alvarez.pdf