Weibull modulus from size effect of high-performance fiber-reinforced concrete under compression and flexure
| Autor: | Tuan-Kiet Tran, Duy-Liem Nguyen, Tri-Thong Nguyen, Duc-Kien Thai, Tri Thuong Ngo |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Weibull modulus 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Fiber-reinforced concrete Bending Compression (physics) 0201 civil engineering law.invention Brittleness law 021105 building & construction Cylinder General Materials Science Fiber Cube Composite material Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 226:743-758 |
| ISSN: | 0950-0618 |
| Popis: | The Weibull modulus, a material parameter describing the size effect of brittle material, of high-performance fiber-reinforced concretes (HPFRCs) was investigated under compression and flexure. The compressive specimens were as follows: 70.7 × 70.7 × 70.7 mm (cube), 100 × 100 × 100 mm (cube), 150 × 150 × 150 mm (cube), O100 × 200 mm (cylinder), O150 × 300 mm (cylinder). The bending specimens were as follows: 40 × 40 × 120 mm, 100 × 100 × 300 mm and 150 × 150 × 450 mm. For each size or shape, two HPFRCs having different fiber content were examined as follows: HPFRC1 having no fiber and HPFRC2 containing 1.0% macro hooked fibers blended with 0.5% micro smooth fibers by volume. There was a clear size effect on the compressive and bending parameters for both the investigated HPFRCs. The derived Weibull modulus of the investigated HPFRCs for the mechanical parameters varied from 1.33 to 8.74. Furthermore, the correlation between the bending and compressive strengths of the two HPFRCs and their conversion factors for various sizes and shapes of the compressive specimens were explored. |
| Databáze: | OpenAIRE |
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