Improved durability of vegetable fiber reinforced cement composite subject to accelerated carbonation at early age

Almeida, A. E. F. S.; Tonoli, Gustavo Henrique Denzin; Santos, S.F.; Savastano, Holmer

doi:10.1016/j.cemconcomp.2013.05.001

Cited by 137 publications

(125 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The authors attribute this to the lower degradation of the polymeric fiber in alkaline environment, even after 50 cycles of accelerated aging. Almeida et al 13 , upon evaluating fiber cement reinforced with cellulosic pulp produced by the extrusion process, reported an increase of MOR in the order of 5 MPa to 10 MPa for samples tested without aging and after 400 cycles of accelerated aging. Alamshahi et al 46 found values ranging from 8.09 to 11.03 MPa for cement composite reinforced with polypropylene in the order of 2.16 to 4.28% combined with cotton and viscose fiber.…”

Section: Mechanical Properties Of the Compositesmentioning

confidence: 99%

“…Furthermore, for this formulation, the specific energy decreased considerably after 400 aging cycles. This reduction may be related to the increase in MOE of the matrix-reinforcement interface, which is the result of the densification of the material resulting from the re-precipitation of the hydration products of cement that are deposited in the lumen of cellulosic fibers, resulting in the degradation of vegetable material in a highly aggressive environment, causing it to lose its reinforcement capacity [10][11][12][13]20 . The association of cellulosic pulp with PET bottle particles did not cause variation in MOR values after the most aggressive aging conditions (400 cycles).…”

Section: Mechanical Properties Of the Compositesmentioning

confidence: 99%

“…The use of vegetable fibers as a reinforcement in fibercement composites leads to a set of advantages, such as wide availability, low cost, besides being a material that is renewable and not harmful to health. However, long-term durability of fiber-cements reinforced with lignocellulosic material is problematic due to the degradation of vegetable fibers in alkaline environment, which leads to loss of reduction in toughness and maximum strength, of the composite after accelerated wetting and drying cycles, that simulates the conditions of use [10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…Almeida et al 13 , studying fiber-cement reinforced with cellulosic pulp, observed a reduction in apparent porosity of close to 31%, 28% and 23% for those samples evaluated without aging, after 200 and 400 cycles of accelerated aging. Teixeira et al 42 , upon evaluating fiber-cement reinforced with cellulose and polypropylene in concentrations of 4 and 2%, respectively, found the respective values of 23.3% and 33.0% for water absorption.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Cellulose Associated with Pet Bottle Waste in Cement Based Composites

et al. 2017

View full text Add to dashboard Cite

The present study was to evaluate the effect of polyethylene terephthalate (PET) particle sizes on the mechanical and physical properties of extruded fiber-cement composites with different particle sizes combined to cellulose pulp in the production of fiber cement by the extrusion process. The design consisted of four formulations, one composed of 5% cellulose and the other three with 2.5% cellulosic pulp and 2.5% of PET particles with different particle sizes. Physical, mechanical and microstructural tests were performed without aging cycles and after 200 and 400 accelerated aging cycles. The degradation of vegetable fibers in the cement and the decrease of properties with aging was observed. PET particles were more resistant in alkaline environment and did not degrade. However, particle size did not exert great effect in the physical and mechanical properties of the composite. Thus, the use of PET particles shows potential as a reinforcement for fiber-cement composites.

show abstract

Section: Mechanical Properties Of the Compositesmentioning

confidence: 99%

Section: Mechanical Properties Of the Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Cellulose Associated with Pet Bottle Waste in Cement Based Composites

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The cellulosic pulp can also be considered as micro reinforcement in cement based matrices (26,32). An interesting waste is the paper packaging used for binders (e.g., ordinary Portland cement).…”

Section: Wood Pulp Fibersmentioning

confidence: 99%

Non-conventional cement-based composites reinforced with vegetable fibers: A review of strategies to improve durability

et al. 2015

View full text Add to dashboard Cite

The present review shows the state-of-art on the approachs about improving the processing, physical-mechanical performance and durability of non-conventional fiber-cement composites. The objective of this review is to show some of these strategies to mitigate the degradation of the vegetable fibers used as reinforcement in cost-effective and non-conventional fiber-cement and, consequently, to improve their mechanical and durability properties for applications in the housing construction. Beyond the introduction about vegetable fibers, the content of this review is divided in the following sections: (i) surface modification of the fibers; (ii) improving fiber-to-cement interface; (iii) natural pozzolans; (iv) accelerated carbonation; (v) applications of nanoscience; and (vi) principles of functionally graded materials and extrusion process were briefly discussed with focus on future research needs. RESUMEN: Compuestos cementantes no convencionales reforzados con fibras vegetales: Una revisión de estrategias para mejorar la durabilidad.La presente revisión explora la actualidad en el campo de los compuestos de fibrocemento no convencionales en relación a mejoras en el proceso productivo, el rendimiento físico-mecánico y la durabilidad. El objetivo de esta revisión es exponer algunas estrategias para mitigar la degradación de las fibras vegetales utilizadas como refuerzo en fibrocementos no convencionales y rentables, obteniendo en consecuencia una mejoría en el rendimiento de sus propiedades mecánicas y durabilidad para su aplicación en el área de la construcción de viviendas. Además de la introducción en relación a las fibras vegetales, el contenido de esta revisión se divide en las siguientes secciones: (i) modificación de la superficie de las fibras; (ii) mejoramiento de la interfaz fibra-cemento; (iii) puzolanas naturales; (iv) carbonatación acelerada; (v) aplicaciones de la nanociencia; y (vi) principios de los materiales funcionalmente graduados y el proceso de extrusión fueron discutidos brevemente con un enfoque a investigaciones futuras.

show abstract

Modification of eucalyptus pulp fiber using silane coupling agents with aliphatic side chains of different length

Mendes

Oliveira

et al. 2015

Polymer Engineering & Sci

View full text Add to dashboard Cite

The objective of this work was to evaluate the effect of three silane coupling agents with different aliphatic chain lengths on the hydrophobicity of eucalyptus pulp fiber. The three silanes coupling agents used (isobutyltrimethoxysilane, methyltrimethoxysilane, and n‐octyltriethoxysilane [OTES]) were each tested at three concentrations. Scanning electron microscopy coupled with energy dispersive spectroscopy revealed that the silane coupling agents markedly increased the Si content of the treated fibers. The Si distribution was not completely homogenous but was abundant in the treated samples. The treated fibers had higher contact angles for water and lower moisture adsorption than the control. Of the coupling agents tested, OTES treated fibers had the highest moisture resistance. This was likely due to the greater chain length of the aliphatic side group coupled to OTES. The use of silane coupling agents with alkyl side chains could improve the functional properties of pulp fiber and increase its compatibility with hydrophobic polymers. POLYM. ENG. SCI., 55:1273ȓ1280, 2015. © 2015 Society of Plastics Engineers

show abstract

Improved durability of vegetable fiber reinforced cement composite subject to accelerated carbonation at early age

Cited by 137 publications

References 28 publications

Cellulose Associated with Pet Bottle Waste in Cement Based Composites

Cellulose Associated with Pet Bottle Waste in Cement Based Composites

Non-conventional cement-based composites reinforced with vegetable fibers: A review of strategies to improve durability

Modification of eucalyptus pulp fiber using silane coupling agents with aliphatic side chains of different length

Contact Info

Product

Resources

About