Journal
CASE STUDIES IN CONSTRUCTION MATERIALS
Volume 15, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cscm.2021.e00637
Keywords
Geopolymer concrete; Waste; Fly ash; Strength; Durability
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This paper reviews and analyzes the mechanical and durability properties of geopolymer concrete containing various waste materials. It highlights the lack of mix design guidelines, which result in a wide variance of properties, and calls for the development of guidelines focusing on optimal Si/Al ratio, NaOH concentration, and SS/SH ratio to account for the addition of waste materials with different chemical compositions and morphology.
This review paper presents and analyses the mechanical and durability properties of geopolymer concrete (GPC) which contain various waste materials. Significant findings have concluded that the absence of guidelines for the mix design of GPC has resulted in a wide variance of design parameters and therefore strength and durability properties. The purpose of this review is to compile recent research to highlight the inadequacy of the current literature and identify areas in which the current mix design can be improved. The development of mix design guidelines that focus on optimal Si/Al ratio, NaOH concentration and sodium silicate to sodium hydroxide (SS/ SH) ratio are required, as these factors are significantly affected by the addition of waste materials with varying chemical compositions and morphology.
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