Aumento de la tenacidad de hormigones autocompactables reforzados con fibras cortas de polipropileno

Melián, Gonzalo Pérez; Barluenga, Gonzalo; Olivares, Francisco Hernández

doi:10.3989/mc.2010.52309

Cited by 3 publications

(3 citation statements)

References 7 publications

(14 reference statements)

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“…The results of the studies carried out on cement mortars reinforced with fibres indicate that in the majority of the cases the resulting mortars show a decrease in the compressive strength of around 14% for the polymeric fibres [18], 3% for metallic fibres [27] and 20% for glass fibres [25] flexural strength increases by about 25% for polymer fibres [18,28], 12% for metallic fibres and 15% for glass fibres [29].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the mechanical behaviour of the cement mortars with additives of mineral wool fibres from recycling of CDW

Ramírez

Merino

Arrebola

et al. 2019

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Analysis of the mechanical behaviour of the cement mortars with additives of mineral wool fibres from recycling of CDW

Ramírez

Merino

Arrebola

et al. 2019

Construction and Building Materials

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“…When any slab is subjected under bending moment Mp yielded from concentrated load P at slab's centre, based on conservation of virtual work which prescribes the internal virtual work equals to the external virtual work, the ultimate static load can be derived as eight times of bending moment, which is given in equation [5]. The ultimate static load of each slab has been calculated and included in Table 6 and the ultimate dynamic load of each slab is considered as a maximum load yielded from all impacts given in Table 3.…”

Section: Analysis Of Slabs Based On An Extended Yield Line Theorymentioning

confidence: 99%

“…Thanks to fibre inclusion, Fibre Reinforced Concrete (FRC) has much better properties under impact load than Plain Concrete (PC) does, in terms of both toughness and energy absorption (2, 3) Many kinds of fibres such as steel fibres (4), polypropelene fibres (5), glass fibres (6) etc. have been reported to improve FRC impact resistance significantly.…”

Section: Introductionmentioning

confidence: 99%

Performance of hybrid cement composite elements under drop-weight impact load

Nguyen¹,

Río²,

Sánchez‐Gálvez³

2014

Mater. construcc.

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ABSTRACT:The performance, under drop-weight impact load, of hybrid cement composite (HCC) elements, consisting of a top layer of plain concrete (PC) and a bottom layer of fibre reinforced concrete (FRC), in comparison with full-depth FRC and PC was studied. Apart from improving the tensile capacity of PC and saving fibre steel reinforcements of FRC, the results showed that HCC can effectively control the deformations and enhance the impact performance of the structural members as its outcomes were similar to that of a full-depth FRC. The analytical studies using Hughes empirical formulae (HEF) and yield line theory (YLT) adopted to investigate the practical use of HCC showed that they are applicable for design such HCC elements against impacts. KEYWORDS: RESUMEN:Comportamiento de elementos estructurales de compuestos híbridos base cemento frente a impacto de torre de caída. Se estudió el comportamiento, frente a impacto de torre de caída, de elementos híbridos base cemento (HCC), formados por una capa superior de hormigón en masa (PC) y una capa inferior de hormigón reforzado con fibras (FRC) en comparación con elementos análogos íntegramente fabricados con FRC y PC. Además de proporcionar una mejora en la resistencia frente a flexo-tracción de los PC y un ahorro en refuerzo usando fibras de acero en el caso de los FRC, los resultados mostraron que el HCC puede controlar eficazmente las deformaciones y mejorar el rendimiento frente a impacto de los elementos estructurales ya que sus resultados fueron análogos a la de los FRC. Los estudios analíticos, utilizando HEF e YLT, adoptados para investigar el uso práctico de los HCC mostraron que los mismos son aplicables para el diseño de estos elementos frente a impacto.

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An Experimental Study of Shear Resistance for Multisize Polypropylene Fiber Concrete Beams

Yang

Liang

et al. 2021

Int J Concr Struct Mater

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To study the influence of polypropylene fibers with different thicknesses on concrete beams, inclined section shear tests of polypropylene fiber concrete beams were carried out. The cracking load, ultimate load, midspan deflection, reinforcement, and strain of polypropylene fiber concrete beams and conventional reinforced-concrete beams under shear were compared and analyzed. The load-bearing capacity of the rectangular beams was improved significantly by polypropylene fiber addition. Compared with conventional reinforced-concrete beams, the limit shear load of concrete beams with polypropylene fibers and multisize polypropylene concrete beams that were reinforced with three types of fibers increased by 8.67% and 17.07%, respectively. By mixing polypropylene fibers into concrete beams, the initial crack shear force of the beam was improved, the number of cracks was increased and the crack width was reduced, which can increase the beam ductility, inhibit crack formation and increase the strength. The computational formula of the shear ultimate bearing capacity of polypropylene fiber–concrete beams was revised according to composite material theory, and the calculated results were consistent with the test values.

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Aumento de la tenacidad de hormigones autocompactables reforzados con fibras cortas de polipropileno

Cited by 3 publications

References 7 publications

Analysis of the mechanical behaviour of the cement mortars with additives of mineral wool fibres from recycling of CDW

Analysis of the mechanical behaviour of the cement mortars with additives of mineral wool fibres from recycling of CDW

Performance of hybrid cement composite elements under drop-weight impact load

An Experimental Study of Shear Resistance for Multisize Polypropylene Fiber Concrete Beams

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