Journal:
Cement and Concrete Composites
Cement and Concrete Composites
Fecha:
2015
2015
Keywords publicación:
Cold bonded fly ash aggregate, High volume fly ash, Pelletization, Electrical resistivity, Environment; Sustainability
Cold bonded fly ash aggregate, High volume fly ash, Pelletization, Electrical resistivity, Environment; Sustainability
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.
- Felipe Riveraa, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile. National Research Center for Integrated Natural Disaster Management CONICYT/FONDAP/15110017, Chile
- Patricia Martínez, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
- Javier Castro, Faculty of Engineering, Universidad del Desarrollo, Santiago, Chile
- Mauricio López, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
