resumo
The use of calcium-rich materials in geopolymerization has been reported in the literature and generally induces an increase in mechanical properties. In this work, stone cutting waste (SW) was used in new geopolymers formulations and the interaction of the components was evaluated. In addition to the filler effect, SW affected the compositional system producing different geopolymer gels when compared to the formulation containing only metakaolin. The samples with 50 and 75 wt% SW achieved a compressive strength of similar to 28 and similar to 14 MPa, respectively. In conclusion, SW is a promising raw material for geopolymers, whose properties suggest distinct applications. (C) 2020 Elsevier Ltd. All rights reserved.
palavras-chave
C-S-H; FLY-ASH; STRUCTURAL CHARACTERISTICS; THERMAL-PROPERTIES; ALKALI ACTIVATION; METAKAOLIN; PULP; LIGHTWEIGHT; LIMESTONE; ZEOLITES
categoria
Construction & Building Technology; Engineering; Materials Science
autores
Simao, L; Hotza, D; Ribeiro, MJ; Novais, RM; Montedo, ORK; Raupp-Pereira, F
nossos autores
Rui Miguel Novais
Investigador Auxiliaragradecimentos
The authors are very grateful to Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES/Brazil, processes 88887.144642/2017-00 and 88882.345219/2019-01) and Fundacao para a Ciencia e a Tecnologia (FCT/Portugal, process 308669/2016-9) for funding this work. R.M. Novais wish to thank FCT for supporting their work (CEECIND/00335/2017). This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the Foundation for Science and Technology/MCTES.