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Some Properties of High Performance Carbon Fibres Cement Composites | ||
| Journal of Engineering | ||
| Article 1, Volume 15, Issue 4, 2009, Pages 0-0 | ||
| Authors | ||
| Nada Al; | ||
| Abstract | ||
| The paper presents properties of high performance concrete reinforced with relatively high percentage of choped carbon fibers vol. fraction ranging from (1 to 5) %. The great advantage of such composites is their relatively high flexural strength. A low water to cement ratio of 0.3 with super plasticizer was used in order to keep the cement mix easily workable. To improve the properties, a locally existing pozzolan based on reactive meta- kaolin was used in the mixture together with silica sand. A high modulus carbon fibers (450 KN/mm2) were also used. In addition to the flexural strength, dynamic modulus of elastisity were found using dynamic methods. The results showed that the specimen failed in flexureal by a single crack although the ultimate tensile strength and the stiffness of the composite were increased as the fibers content was increased. | ||
| Keywords | ||
| carbon fibers; reactive meta; kaolin; silica sand; super plasticizer; flexural strength; dynamic modulus of elastisity | ||
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