Effect of external sulfate attack on the tensile properties of steel-fibre-reinforced sprayed concrete-Reference-Cited by-同舟云学术

Effect of external sulfate attack on the tensile properties of steel-fibre-reinforced sprayed concrete

Published:2024-08-01 Issue:15 Volume:76 Page:872-881
ISSN:0024-9831
Container-title:Magazine of Concrete Research
language:en
Short-container-title:Magazine of Concrete Research

Author:

Salvador Renan P.¹,Serafini Ramoel²,Rambo Dimas A. S.¹,Sant'Anna Alessandra S.³,Quarcioni Valdecir A.⁴,de Figueiredo Antonio D.⁵

Affiliation:

1. Lecturer, Department of Civil Engineering, São Judas Tadeu University, Rua Taquari, São Paulo, Brazil

2. Lecturer, Department of Civil Engineering, São Judas Tadeu University, Rua Taquari, São Paulo, Brazil (corresponding author: )

3. Researcher, Department of Civil Engineering, São Judas Tadeu University, Rua Taquari, São Paulo, Brazil

4. Researcher, Institute for Technological Research, Av. Prof. Almeida Prado, São Paulo, Brazil

5. Professor, Department of Civil Construction Engineering, Polytechnic School of University of São Paulo, São Paulo, Brazil

Abstract

An investigation into the effects of external sulfate attack (ESA) on the mechanical and microstructural properties of steel fibre-reinforced sprayed concrete (SFRSC) was conducted. Crimped carbon steel fibres, 40 mm long, were used as reinforcement in three different mixtures with specified fibre contents of 30, 60 and 90 kg/m3. Cylindrical specimens, drilled from SFRSC panels, were subjected to sulfate attack for up to 270 days. Double-punch tests were used to determine the matrix crack strength and the post-crack tensile strength of the SFRSC. The effective fibre content of each specimen was determined by inductive tests and subsequently correlated with the mechanical results. Scanning electron microscopy was used to evaluate the phases formed in the concrete pores during the ESA. The results showed that fibre reinforcement may reduce cracking due to ESA.

Publisher

Emerald

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jmacr.23.00251

Reference51 articles.

1. ABNT (Associação Brasileira de Normas Técnicas) (2014) NBR 6118:2014: Design of concrete structures – procedure. ABNT, Rio de Janeiro, Brazil.

2. ACI (American Concrete Institute) (2008) ACI 201.2R-08: Guide to durable concrete. ACI, Farmington Hills, MI, USA.

3. Aenor (Asociación Española de Normalización y Certificación) (2009) UNE EN 12390-3:2009: Testing hardened concrete. Part 3: Compressive strength of test specimens. Aenor, Madrid, Spain.

4. Aenor (2010) UNE EN 83515:2010: Fibre reinforced concrete. Determination of cracking strength, ductility and residual tensile strength. Barcelona test. Aenor, Madrid, Spain.

5. Aenor (2011) UNE EN 197-1:2011. Cement: Composition, specifications and conformity criteria for common cements. Aenor, Madrid, Spain.