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Fire Resistance of Wood Fiber Reinforced Concrete
https://orcid.org/http://orcid.org/0000-0002-3781-2198
https://orcid.org/http://orcid.org/0000-0002-8240-6930
One of many possible approaches to reduce the carbon footprint and improve the resource efficiency of building materials is to use wood fibers as alternative fibers and aggregate substitutes from wood processing in concrete. In addition to the interaction between wood fibers, concrete matrix, and the resulting structures, the fire resistance of a hybrid system is of particular interest. Two test rigs were developed to test the material behavior under high-temperature conditions. In one, the 4-point bending tensile strength was tested at 105 °C, 600 °C, and 800 °C with a heating rate of 10 K/min to simulate the residual load-bearing behavior due to the temperature strain in the case of fire. A second test was set up to simulate flame exposure in case of fire. The specimens were exposed to flames at predetermined intervals using a high-propane burner. At a maximum test duration of 70 s, temperatures up to 1450 °C were reached at the specimen surface. Surface tensile strength measurements and structural analyses then investigated the influence of the added wood fibers.
To assess how the novel concrete formulation affects fire resistance, flexural strength tests and flame exposure trials were carried out on different test specimens of a reference concrete and several wood fiber-reinforced concretes with varying fiber contents. Particularly in the surface tensile tests exposed to flame, no decrease in strength was observed for the wood fiber-reinforced specimens, whereas for the reference test, the strength decreased by about 10%. Based on the test results, the influence of the wood fibers on the fire resistance could be determined more precisely and enable a better understanding of this type of new concrete construction.
Fire Resistance of Wood Fiber Reinforced Concrete
https://orcid.org/http://orcid.org/0000-0002-3781-2198
https://orcid.org/http://orcid.org/0000-0002-8240-6930
One of many possible approaches to reduce the carbon footprint and improve the resource efficiency of building materials is to use wood fibers as alternative fibers and aggregate substitutes from wood processing in concrete. In addition to the interaction between wood fibers, concrete matrix, and the resulting structures, the fire resistance of a hybrid system is of particular interest. Two test rigs were developed to test the material behavior under high-temperature conditions. In one, the 4-point bending tensile strength was tested at 105 °C, 600 °C, and 800 °C with a heating rate of 10 K/min to simulate the residual load-bearing behavior due to the temperature strain in the case of fire. A second test was set up to simulate flame exposure in case of fire. The specimens were exposed to flames at predetermined intervals using a high-propane burner. At a maximum test duration of 70 s, temperatures up to 1450 °C were reached at the specimen surface. Surface tensile strength measurements and structural analyses then investigated the influence of the added wood fibers.
To assess how the novel concrete formulation affects fire resistance, flexural strength tests and flame exposure trials were carried out on different test specimens of a reference concrete and several wood fiber-reinforced concretes with varying fiber contents. Particularly in the surface tensile tests exposed to flame, no decrease in strength was observed for the wood fiber-reinforced specimens, whereas for the reference test, the strength decreased by about 10%. Based on the test results, the influence of the wood fibers on the fire resistance could be determined more precisely and enable a better understanding of this type of new concrete construction.
Fire Resistance of Wood Fiber Reinforced Concrete
https://orcid.org/http://orcid.org/0000-0002-3781-2198
https://orcid.org/http://orcid.org/0000-0002-8240-6930
One of many possible approaches to reduce the carbon footprint and improve the resource efficiency of building materials is to use wood fibers as alternative fibers and aggregate substitutes from wood processing in concrete. In addition to the interaction between wood fibers, concrete matrix, and the resulting structures, the fire resistance of a hybrid system is of particular interest. Two test rigs were developed to test the material behavior under high-temperature conditions. In one, the 4-point bending tensile strength was tested at 105 °C, 600 °C, and 800 °C with a heating rate of 10 K/min to simulate the residual load-bearing behavior due to the temperature strain in the case of fire. A second test was set up to simulate flame exposure in case of fire. The specimens were exposed to flames at predetermined intervals using a high-propane burner. At a maximum test duration of 70 s, temperatures up to 1450 °C were reached at the specimen surface. Surface tensile strength measurements and structural analyses then investigated the influence of the added wood fibers.
To assess how the novel concrete formulation affects fire resistance, flexural strength tests and flame exposure trials were carried out on different test specimens of a reference concrete and several wood fiber-reinforced concretes with varying fiber contents. Particularly in the surface tensile tests exposed to flame, no decrease in strength was observed for the wood fiber-reinforced specimens, whereas for the reference test, the strength decreased by about 10%. Based on the test results, the influence of the wood fibers on the fire resistance could be determined more precisely and enable a better understanding of this type of new concrete construction.
Fire Resistance of Wood Fiber Reinforced Concrete
RILEM Bookseries
Amziane, Sofiane (editor) / Merta, Ildiko (editor) / Page, Jonathan (editor) / Vaculik, Selina (author) / Matschei, Thomas (author)
International Conference on Bio-Based Building Materials ; 2023 ; Vienna, Austria
2023-06-14
11 pages
Article/Chapter (Book)
Electronic Resource
English
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