A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of Post-cracking Behavior of Concrete with Recycled Aggregates Reinforced with Steel Fiber
The use of steel fiber reinforced concrete (SFRC) for structural purposes has received a major enhancement since the publication of the fib Model Code 2010. The use of recycled concrete aggregates (RCA) in structural applications is also a growing practice. Therefore, it is expected that the combined use of SFRC and RCA will gain more space in structural applications. Assessment of this suitability is essential, and there is also the possibility of using alternative tests for this qualification, as allowed by the fib Model Code 2010. In this sense, the DEWS test (double-edge wedge splitting test) appears to be very promising since recent research has made its procedure and analysis of the simplest results, using only displacement control as a basis for material parameterization. Considering this, an experimental program was developed using SFRC with different levels of replacement of primary aggregate by RCA varying the steel fiber content to verify its influence on constitutive models. The simplified DEWS test proved to be an interesting alternative for the flexural test with some advantages such as providing good quality of results with a reduced volume of the material resulting in both economical and labor benefits. The results demonstrated that the content of RCA had minor effect on the post-cracking behavior of the material, indicating that it can be very interesting for more sustainable structural applications.
Evaluation of Post-cracking Behavior of Concrete with Recycled Aggregates Reinforced with Steel Fiber
The use of steel fiber reinforced concrete (SFRC) for structural purposes has received a major enhancement since the publication of the fib Model Code 2010. The use of recycled concrete aggregates (RCA) in structural applications is also a growing practice. Therefore, it is expected that the combined use of SFRC and RCA will gain more space in structural applications. Assessment of this suitability is essential, and there is also the possibility of using alternative tests for this qualification, as allowed by the fib Model Code 2010. In this sense, the DEWS test (double-edge wedge splitting test) appears to be very promising since recent research has made its procedure and analysis of the simplest results, using only displacement control as a basis for material parameterization. Considering this, an experimental program was developed using SFRC with different levels of replacement of primary aggregate by RCA varying the steel fiber content to verify its influence on constitutive models. The simplified DEWS test proved to be an interesting alternative for the flexural test with some advantages such as providing good quality of results with a reduced volume of the material resulting in both economical and labor benefits. The results demonstrated that the content of RCA had minor effect on the post-cracking behavior of the material, indicating that it can be very interesting for more sustainable structural applications.
Evaluation of Post-cracking Behavior of Concrete with Recycled Aggregates Reinforced with Steel Fiber
RILEM Bookseries
Mechtcherine, Viktor (editor) / Signorini, Cesare (editor) / Junger, Dominik (editor) / Neto, José Gabriel Medef (author) / Costa, A. T. (author) / de Figueiredo, A. D. (author) / Tchalian, R. (author) / Monte, R. (author)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2024 ; Dresden, Germany
Transforming Construction: Advances in Fiber Reinforced Concrete ; Chapter: 16 ; 123-130
RILEM Bookseries ; 54
2024-09-12
8 pages
Article/Chapter (Book)
Electronic Resource
English
Steel Fiber Reinforced Concrete , Recycled Concrete Aggregates , DEWS Test (Double Edge Wedge Splitting Test) , Material Parameterization , Sustainability in Construction , Post-Cracking Behavior , Constitutive Models in Structural Engineering Engineering , Building Materials , Structural Materials , Sustainable Development
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