2011
DOI: 10.1016/j.conbuildmat.2010.12.022
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Post-cracking behaviour of steel and macro-synthetic fibre-reinforced concretes

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Cited by 288 publications
(141 citation statements)
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“…The reported residual post-cracking to peak strength ratios achieved by the HDPE FRC are satisfactory as they reach approximately 50% of the equivalent R L /F cr strength ratio for steel fibre reinforced concrete and are about equal to the ratios reported for concrete reinforced with PP fibres [15,31]. These results demonstrate that, even for structural applications, the performance of the recycled plain HDPE fibres is comparable to that of the commercial PP fibres which are produced with the optimised shapes to develop higher bond strength.…”
Section: Post-cracking Flexural Strength Of Concretementioning
confidence: 60%
“…The reported residual post-cracking to peak strength ratios achieved by the HDPE FRC are satisfactory as they reach approximately 50% of the equivalent R L /F cr strength ratio for steel fibre reinforced concrete and are about equal to the ratios reported for concrete reinforced with PP fibres [15,31]. These results demonstrate that, even for structural applications, the performance of the recycled plain HDPE fibres is comparable to that of the commercial PP fibres which are produced with the optimised shapes to develop higher bond strength.…”
Section: Post-cracking Flexural Strength Of Concretementioning
confidence: 60%
“…Figure 7 show the graph of modulus of elasticity of the polythene fibre reinforced concrete beams versus the concrete age. The Figure shows that for all percentages fibre, the modulus of elasticity increases with increase age of concrete [24]. At each of the concrete ages of 7 days, 14 days and 28 days tested, the concrete modulus of elasticity increases linearly and it is seen that the concrete with 0.30% fibre having the highest value of modulus of elasticity irrespective of the age of the concrete.…”
Section: Results Of Load Strengthsmentioning
confidence: 81%
“…Em cada gráfico da Figura 4, verifica-se que a resposta elástica inicial, compreendida no intervalo entre 0 e 0,05mm de abertura de fissura, é praticamente inalterada pela adição das fibras, independentemente da dosagem utilizada [1,13]. A carga resistida pós-fissuração aumenta com o consumo de fibras e é dependente do módulo de elasticidade da fibra e da sua aderência na matriz.…”
Section: Figuraunclassified
“…No entanto, a exigência da norma EN 14651-2007 [7] de utilização de entalhe no corpo-de-prova torna o método ainda mais trabalhoso. Talvez por isso, a avaliação do comportamento mecânico e estrutural do CRF com distintos tipos de fibras já foi objeto de vários estudos internacionais [2,[12][13][14][15] e brasileiros [11,[16][17][18][19][20][21], sem a utilização deste método específico. Assim, há a necessidade de utilização deste método para a caracterização do comportamento mecânico e dosagem do CRF de modo a atender aos critérios estabelecidos no fib Model Code para aplicações estruturais do concreto reforçado com distintos tipos de fibras em baixos teores [22].…”
Section: Introductionunclassified