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Toughness characteristics of Arenga pinnata fibre concrete
The addition of fibres in concrete is expected to improve its tensile strength, toughnesss and ductility. The fibres will also function as a bridge across cracks and help control its propagation. This study is concerned with the toughness characteristics of concrete containing Arenga pinnata fibre as reinforcement. The fibres were obtained from the trunk of the Afenga pinnata or commonly known as the black sugar palm. The findings of an experimental investigation on the toughness characteristics of Arenga pinnata fibre concrete are reported. The following conclusions can be derived: 1. The addition of fibre reduces the workability, and this was overcome by varying the dosage of the superplasticizer in the mix proportions to maintain similar workability. 2. The incorporation of Arenga pinnata fibre into the mix had a positive effect on the ductility of the concrete and increased toughness characteristics. 3. The toughness at early age showed significant increases up to 28 days due to effect of concrete maturity. However, at later ages, the increase becomes minimal and even experienced a reduction as a result of the reaction between the fibres and the alkaline pore water. The effect of the reaction is more pronounced in the mix with high fibre volume fraction. 4. The effect of fibre length and volume fraction on the toughness characteristics showed no definite trend.
Toughness characteristics of Arenga pinnata fibre concrete
The addition of fibres in concrete is expected to improve its tensile strength, toughnesss and ductility. The fibres will also function as a bridge across cracks and help control its propagation. This study is concerned with the toughness characteristics of concrete containing Arenga pinnata fibre as reinforcement. The fibres were obtained from the trunk of the Afenga pinnata or commonly known as the black sugar palm. The findings of an experimental investigation on the toughness characteristics of Arenga pinnata fibre concrete are reported. The following conclusions can be derived: 1. The addition of fibre reduces the workability, and this was overcome by varying the dosage of the superplasticizer in the mix proportions to maintain similar workability. 2. The incorporation of Arenga pinnata fibre into the mix had a positive effect on the ductility of the concrete and increased toughness characteristics. 3. The toughness at early age showed significant increases up to 28 days due to effect of concrete maturity. However, at later ages, the increase becomes minimal and even experienced a reduction as a result of the reaction between the fibres and the alkaline pore water. The effect of the reaction is more pronounced in the mix with high fibre volume fraction. 4. The effect of fibre length and volume fraction on the toughness characteristics showed no definite trend.
Toughness characteristics of Arenga pinnata fibre concrete
Zähfestigkeitseigenschaften von mit Arenga pinnata-Fasern verstärktem Beton
Abdul Razak, H. (author) / Ferdiansyah, T. (author)
Journal of Natural Fibers ; 2 ; 89-103
2005
15 Seiten, 8 Bilder, 3 Tabellen, 14 Quellen
Article (Journal)
English
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