Mix design and mechanical performance of geopolymer binder for sustainable construction and building material

2017 International Conference on Building Materials and Materials Engineering

材料科学;土木建筑工程

Saeli, Manfredi^1 ; Novais, Rui M.^1 ; Seabra, Maria Paula^1 ; Labrincha, João A.^1

Department of Materials and Ceramics Engineering, CICECO, University of Aveiro, Campus Universitário de Santiago, Aveiro

3810-193, Portugal^1

关键词: Cement production;    Financial surplus;    Geopolymer binders;    Material processing;    Mechanical performance;    Ordinary Portland cement;    Structural applications;    Sustainable construction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/264/1/012002/pdf
DOI  :  10.1088/1757-899X/264/1/012002

来源: IOP

【 摘 要 】

Sustainability in construction is a major concern worldwide, due to the huge volume of materials and energy consumed by this sector. Associated supplementing industries (e.g. Portland cement production) constitute a significant source of CO2emissions and global warming. Valorisation and reuse of industrial wastes and by-products make geopolymers a solid and sustainable via to be followed as a valid alternative to Portland cement. In this work the mix design of a green fly ash-based geopolymer is evaluated as an environmentally friendly construction material. In the pursuit of sustainability, wastes from a regional kraft pulp industry are exploited for the material processing. Furthermore, a simple, reproducible, and low-cost manufacture is used. The mix design is hence optimised in order to improve the desirable mechanical performance of the material intended for structural applications in construction. Tests indicate that geopolymers may efficiently substitute the ordinary Portland cement as a mortar/concrete binder. Furthermore, valorisation and reuse of wastes in geopolymers is a suboptimal way of gaining financial surplus for the involved industrial players, while contributes for the implementation of a desirable circular economy.