Abstract
![CDATA[This paper presents results of an experimental investigation evaluating dynamic properties and damping ratio of fibre reinforced concrete (FRC) including PVA fibres of two different geometric lengths, 6 and 12 mm, with volume fraction of 0.25% and 0.50%. The impact resonance test is used to determine the resonant frequency of 75 x 100 x 400 mm prisms by applying a small load impulse and measuring the resulting acceleration through the specimen for transverse mode of vibration. For each concrete type, impact resonance test was carried out at 14 and 28 days of ageing. From the test results, the fundamental (natural) frequencies are measured and acceleration-time history graphs are prepared. Acceleration-time history is used in order to calculate the damping ratio, following logarithmic decrement method. The dynamic modulus of elasticity (DMOE) is also being calculated from the fundamental transverse frequency which is comparable to the static chord modulus of elasticity. The compressive strength of concretes at the age 28 day is also evaluated. Test results indicated that the compressive strength of concrete increased by fibre addition. However, it has been observed that PVA fibre addition in low volume fraction used in this study do not significantly affect the concrete modulus of elasticity and damping ratio.]]
| Original language | English |
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| Title of host publication | Proceedings of the Thirteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-13): Sapporo, Japan, September 11-13, 2013 |
| Publisher | Hokkaido University |
| Number of pages | 8 |
| Publication status | Published - 2013 |
| Event | East Asia-Pacific Conference on Structural Engineering and Construction - Duration: 3 Dec 2019 → … |
Conference
| Conference | East Asia-Pacific Conference on Structural Engineering and Construction |
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| Period | 3/12/19 → … |
Keywords
- fiber-reinforced concrete