Memorias de investigación
Communications at congresses:
Polypropylene fiber-reinforced self-compacting concrete for the reconstruction of the cathedral of La Laguna, Canary Island, Spain
Year:2011

Research Areas
  • Civil engineering and architecture

Information
Abstract
High performance materials are needed for the reconstruction of such a singular building as a cathedral, since in addition to special mechanical properties, high selfcompactability, high durability and high surface quality, are specified. Because of the project?s specifications, the use of polypropylene fiber-reinforced, self-compacting concrete was selected by the engineering office. The low quality of local materials and the lack of experience in applying macro polypropylene fiber for structural reinforcement with these components materials required the development of a pretesting program. To optimize the mix design, performance was evaluated following technical, economical and constructability criteria. Since the addition of fibers reduces concrete self-compactability, many trials were run to determine the optimal mix proportions. The variables introduced were paste volume; the aggregate skeleton of two or three fractions plus limestone filler; fiber type and dosage. Two mix designs were selected from the preliminary results. The first one was used as reference for self-compactability and mechanical properties. The second one was an optimized mix with a reduction in cement content of 20 kg/m3 and fiber dosage of 1 kg/m3. For these mix designs, extended testing was carried out to measure the compression and flexural strength, modulus of elasticity, toughness, and water permeability resistance.
International
Si
Congress
9th Symposium on High Performance Concrete. Design, Verification and Utilization
960
Place
Rotorua, Nueva Zelanda
Reviewers
Si
ISBN/ISSN
978-0-473-19028-6
Start Date
09/08/2011
End Date
11/08/2011
From page
95
To page
96
Book of Abstracts y CD 9th Symposium on High Performance Concrete. Design, Verification and Utilization
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Proyectos y Calidad