Comparative flexural performance evaluation of steel fibre-reinforced concretes acoording to ASTM C1018 shows importance of fibre parameters
| Autor: | C. D. Johnston, Å. Skarendahl |
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| Rok vydání: | 1992 |
| Předmět: |
Toughness
Materials science business.industry General Engineering Steel fibre Building and Construction Matrix strength Structural engineering Aspect ratio (image) Matrix (chemical analysis) Residual strength Flexural strength Mechanics of Materials Solid mechanics General Materials Science Composite material business Civil and Structural Engineering |
| Zdroj: | Materials and Structures. 25:191-200 |
| ISSN: | 1871-6873 0025-5432 |
| DOI: | 10.1007/bf02473063 |
| Popis: | The flexural performance of steel fibre-reinforced beams with varying amounts and types of fibre is evaluated in terms of toughness parameters and residual strength factors determined in accordance with ASTM Standard C1018-89. Five types of steel fibre in amounts from 30 to 105 kg m−3, and two matrix strength levels, were examined in a program of 117 tests using beams 150 mm wide and 100 mm deep loaded at the third points over a 750 mm span. Significant differences in performance associated with changes in matrix and fibre parameters are clearly identified in this test. First-crack strength depends mainly on characteristics that govern matrix strength and is minimally dependent on fibre parameters such as type, size and amount. Toughness indices and residual strength factors, particularly those corresponding to higher deflections, depend primarily on fibre type, amount and, for geometrically similar fibres, aspect ratio. All are minimally dependent on matrix strength. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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