"Massive volume fly-ash concrete: A more sustainable material with fly ash replacing cement and aggregates". (October 2015)

• Record Type: Journal Article
• Authors: Rivera, Felipe; Martínez, Patricia; Castro, Javier; López, Mauricio
• Is Part Of: Cement & concrete composites. Volume 63(2015)
• Page Start: 104
• Page End: 112
• Publication Date: 2015-10
• Subjects: Cold bonded fly ash aggregate -- High volume fly ash -- Pelletization -- Electrical resistivity -- Environment -- Sustainability; Composite-reinforced concrete -- Periodicals; Concrete -- Periodicals; Composite materials -- Periodicals; Composites de ciment -- Périodiques; Béton -- Périodiques; Composites -- Périodiques; Béton léger -- Périodiques; Cement composites; Composite materials; Composite-reinforced concrete; Concrete; Lightweight concrete; Periodicals; Electronic journals; 620.135
• DOI: 10.1016/j.cemconcomp.2015.08.001
• Languages: English
• ISSNs: 0958-9465

Abstract

Abstract: Fly ash (FA) has been widely used to improve concrete sustainability for many years; however, the amount of FA has been limited by the relatively low cement contents in concrete. In this study, massive volume fly-ash concrete was developed that maximizes the use of FA in concrete through its use as both a cement and aggregate replacement. Concrete containing as much as 728 kg of FA per cubic meter was produced with a compressive strength greater than 30 MPa, a low permeability measured in terms of chloride ion permeability (2300C at 56 d) and electrical resistivity (60 Ω-m at 56 d), and a decreased environmental impact.