An experimental study on the corrosion susceptibility of Recycled Steel Fiber Reinforced Concrete
| Autor: | B. Díaz, Joaquim A. O. Barros, J. Alexandre Bogas, Cristina Maria Vieira Frazão, Fatih Toptan |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
0211 other engineering and technologies 02 engineering and technology Fiber-reinforced concrete Chloride 12. Responsible consumption Corrosion law.invention Natural rubber law Engenharia e Tecnologia::Engenharia Civil Cost competitiveness 021105 building & construction medicine RSF General Materials Science Composite material Splitting tensile test Science & Technology Building and Construction 021001 nanoscience & nanotechnology Durability Fiber pullout test visual_art RSFRC visual_art.visual_art_medium Engenharia Civil [Engenharia e Tecnologia] 0210 nano-technology medicine.drug |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Steel fibers resulting from the industry of tire recycling can be efficiently employed in concrete to improve its mechanical performance, such as post-cracking load bearing and energy absorption capacity. Under chloride attack, an important aspect of Recycled Steel Fiber Reinforced Concrete (RSFRC) durability is its corrosion resistance. However, the insufficient knowledge on this domain contributes for a conservative design philosophy, which can compromise the cost competitiveness of RSFRC and prevent its application in elements where this occurrence, even eventual, is not acceptable. In the present work, an experimental program was performed with the aim of assessing the corrosion susceptibility of RSFRC including the characterization of the micro-mechanical properties and the corrosion resistance of recycled steel fiber (RSF) by means of nano-indentation testing, electrochemical monitoring techniques and scanning electron microscopy (SEM) analysis. The influence of the small rubber debris attached to the RSF surface was also analyzed by using two distinct pre-treatment methods. The adhesive bond behavior between the RSF and the surrounding self-compacting concrete (SCC) matrix was analyzed by performing monotonic RSF pullout tests. Double edge wedge splitting (DEWS) tests were conducted for evaluating the corrosion effects on the post-cracking response of RSFRC. CiviTest Company and the Scientific and Technological Research Assistance Centre (CACTI) of the University of Vigo. The first author would like to thank the FCT for the financial support through the Research Grant PD/BD/113638/2015. The third author acknowledges the grant SFRH/BSAB/114302/2016 provided by FCT. Part of this work is supported by FCT with the reference project UID/EEA/04436/2013, COMPETE 2020 with the code POCI-01- 0145-FEDER-006941. Finally the support of the FCT through the project PTDC/ECM-EST/2635/2014 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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