Publicaciones

Massive volume fly-ash concrete: A more sustainable material with fly ash replacing cement and aggregates

Investigadores

Felipe Rivera

Journal

Cement and Concrete Composites

Institución

Pontificia Universidad Católica de Chile

Disciplina

Ingeniería Civil

afiliacion

  1. Felipe Riveraa, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile. National Research Center for Integrated Natural Disaster Management CONICYT/FONDAP/15110017, Chile
  2. Patricia Martínez, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
  3. Javier Castro, Faculty of Engineering, Universidad del Desarrollo, Santiago, Chile
  4. Mauricio López, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile

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.

Keywords

Cold bonded fly ash aggregate, High volume fly ash, Pelletization, Electrical resistivity, Environment; Sustainability

Link

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