Development of durable cementitious composites using sisal and flax fabrics for reinforcement of masonry structures

Olivito, Renato Sante; Cevallos, Oscar A.; Carrozzini, A.

doi:10.1016/j.matdes.2013.11.023

Cited by 107 publications

(64 citation statements)

References 16 publications

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“…Using an inorganic matrix such as cement favours the effective bonding between reinforcing fibres and the matrix and also between the composite material and substrate [11,12]. In addition, unlike in the case of polymeric materials, special precautions regarding health hazards need not be taken when preparing and using cementitious materials.…”

Section: Introductionmentioning

confidence: 99%

“…Composite samples were produced using one, two or three layers of flax and sisal fabric strips. Because of their good mechanical properties compared to those of other natural fibres, flax and sisal fibres have been used to produce composite materials with great potential for strengthening structures [4,11,14,22]. The matrix used was a limebased grouting (NLG) mix containing natural pozzolans and carbonated filler.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, using natural hydraulic lime (NHL) mortars guarantees the absence of any OPC binder and therefore the absence of harmful amounts of water-soluble salts. Indeed, the results of durability tests conducted by the authors on flax and sisal fibres aged in this NLG matrix [11] led to the conclusion that the lower alkalinity and the presence of carbonate filler and pure pozzolan with a high content of reactive silica makes this matrix potentially well suited for incorporation into vegetable fibre reinforcement composites. All composite samples were subjected to direct tensile tests.…”

Section: Introductionmentioning

confidence: 99%

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Effects of fabric parameters on the tensile behaviour of sustainable cementitious composites

Cevallos

Olivito

2015

Composites Part B: Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of fabric parameters on the tensile behaviour of sustainable cementitious composites

Cevallos

Olivito

2015

Composites Part B: Engineering

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“…This strengthening system was developed in previous studies conducted by the authors [26,27]. According to these studies, by using a natural hydraulic lime (NHL) matrix, the durability of natural fibers is improved.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Repaired Masonry Elements with Flax-FRCM and PBO-FRCM Composites Subjected to Axial Bending Loads

Cevallos

Olivito

Codispoti

2015

Fibers

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Abstract:In the construction industry, the use of natural fabrics as a reinforcement for cement-based composites has shown great potential. The use of these sustainable composites to provide strengthening or repair old masonry structures that exhibit structural problems mainly due to a poor tensile strength of the mortar/brick joints is revealed to be a promising area of research. One of the most significant load conditions affecting the mechanical response of masonry structures occurs when axial bending loads are applied on the resistant cross-section. In this study, three different types of masonry elements were built using clay bricks and a lime-based mortar. After 28 days, the samples were subjected to concentric and eccentric compressive loads. In order to produce significant bending effects, the compressive loads were applied with large eccentricity, and a sudden failure characterized the behavior of the unreinforced masonry (URM) elements. The tested masonry specimens were repaired using fabric-reinforced cementitious matrix (FRCM) composites produced using bi-directional flax and polyparaphenylene benzobisoxazole (PBO) fabrics. The mechanical behavior of the URM and repaired samples was compared in terms of load-displacement and moment-curvature responses. Furthermore, the results achieved using flax-FRCM composites were compared with those of using PBO-FRCM composites. OPEN ACCESSFibers 2015, 3 492

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“…Observando los resultados mostrados en la figura 3 se pueden apreciar dos tipos de curvas esfuerzo-deformación distintas, una es el caso los FRCM de basalto mencionado anteriormente (donde la malla desliza cuando el mortero se fisura) y la otra, los FRCM de fibras vegetales que se caracterizan por un comportamiento de multifisuras, causada por la interacción malla-mortero después de fisurar el mortero. Analizando este comportamiento de multifisuras (el cual se corresponde con los resultados obtenidos por otros estudios [3]), se puede identificar tres zonas de comportamiento diferentes (ver figura 3f): una primera zona elástica-lineal sin fisura (donde el mortero y la malla se deforman en conjunto), luego una zona de formación de fisuras (caracterizada por interacción malla mortero en las diferentes secciones del espécimen) y por último, la zona de fisuración estabilizada (donde quien absorbe todas las tensiones es la malla).…”

Section: Frcmunclassified

Comportamiento mecánico de compuestos de matriz cementicia y tejidos de fibras vegetales

Mercedes

Gil²,

Bernat³

2018

Libro De Comunicaciones / Livro Das Comunicações

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RESUMENLos compuestos de matriz cementicia reforzados con fibras (fibre reinforced cementitious matrix: FRCM) han demostrado ser un material de refuerzo con un prometedor futuro, debido a su facilidad de aplicación, resistencia al fuego y su capacidad de disipar energía a través de un patrón de multifisuras. El auge que viene desarrollando el estudio de fibras vegetales como refuerzo dentro de los materiales compuestos debido a su bajo costo, baja densidad, reciclabilidad y biodegradabilidad, hace que estas fibras se presenten como una opción de refuerzo a considerar dentro los materiales compuestos. En este estudio se han elaborado especímenes FRCM de diferentes fibras vegetales (lino, cáñamo, sisal y algodón), utilizando un tratamiento a base de poliéster para evitar la degradación de las fibras y mejorar su eficacia dentro de los compuestos cementicios. Estos especímenes fueron sometidos a ensayos de tracción directa, donde los resultados mostraron una excelente interacción entre los tejidos y la matriz utilizada, pues el poliéster además mejorar las propiedades mecánicas de los hilos, aumenta la adherencia con la matriz, y con ello mejora las prestaciones mecánicas del FRCM. Los resultados presentan los FRCM de fibras de cáñamo y lino como los compuestos que alcanzaron mayor resistencia a traccion, y a los FRCM de fibras de algodón como los de mayor capacidad de alargamiento y multifisuración. PALABRAS CLAVE: Matriz cementicia, Fibras vegetales, Poliéster1.-INTRODUCCIÓN Dentro de las diversas formas de disponer fibras, entre los llamados compuestos de matrices cementicias reforzados con fibras (fibre reinforced cementitious matrix: FRCM), se encuentran los compuestos cementíticos reforzados con fibras en forma de tejidos. Estos surgen como una alternativa a la matriz orgánica del FRP (fibre reinforced polimers), pues al tener menos emisiones tóxicas, mayor resistencia al fuego y permeabilidad al vapor del agua, entre otras ventajas, los investigadores lo ven como un posible sustituto del FRP, en el campo del refuerzo y rehabilitación de estructuras. 465

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Development of durable cementitious composites using sisal and flax fabrics for reinforcement of masonry structures

Cited by 107 publications

References 16 publications

Effects of fabric parameters on the tensile behaviour of sustainable cementitious composites

Effects of fabric parameters on the tensile behaviour of sustainable cementitious composites

Experimental Analysis of Repaired Masonry Elements with Flax-FRCM and PBO-FRCM Composites Subjected to Axial Bending Loads

Comportamiento mecánico de compuestos de matriz cementicia y tejidos de fibras vegetales

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