2011
DOI: 10.1016/j.conbuildmat.2010.12.062
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Study of the influence of microstructural parameters on the ultrasonic velocity in steel–fiber-reinforced cementitious materials

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Cited by 19 publications
(10 citation statements)
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References 25 publications
(34 reference statements)
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“…The variation of the aspect ratio below 20 has a considerable influence on the ultrasonic pulse velocity, while the pulse velocity is almost constant at higher values [42]. In this study the aspect ratios of fibre were above 20 (33 and 66 for 2 and 4 cm fibre, respectively), and as can be seen in Fig.…”
Section: Ultrasonic Pulse Velocitymentioning
confidence: 97%
“…The variation of the aspect ratio below 20 has a considerable influence on the ultrasonic pulse velocity, while the pulse velocity is almost constant at higher values [42]. In this study the aspect ratios of fibre were above 20 (33 and 66 for 2 and 4 cm fibre, respectively), and as can be seen in Fig.…”
Section: Ultrasonic Pulse Velocitymentioning
confidence: 97%
“…As diferentes posições das fibras localizadas na composição do concreto em decorrência da sua quantidade de 2% para cada 50 kg de cimento e densidade obtiveram efeito insignificante nos tempos de percurso medidos dos pulsos ultrassônico, reduzindo em média a velocidade em torno de 3% da amostra sem adição de fibras. De acordo com Acebes et al (2011), o aumento da porcentagem das fibras de aço causam uma diminuição na velocidade de ultrassom devido à geometria das inclusões de aço. Em virtude da baixa densidade das fibras de polipropileno e borracha, durante a confecção dos traços de concreto utilizou-se maior quantidade de fibras, ocasionando maior Persp.…”
Section: Ensaios De Ultrassomunclassified
“…Previous work focused on the beneficial setting properties of fly ash available in concrete, which can be realized in terms of improving the setting properties due to a longer curing period [4][5][6][7]. It was also reported that the mix design, materials characteristics and curing techniques which leads to the improvement of setting properties in hardened concrete [8,9]. The reacting efficiency of fly ash presents in concrete more than 30% is affected by the low water-cement ratio and also hydration process can lead to the poor binder to aggregate proportioning [10].…”
Section: Introductionmentioning
confidence: 99%