Thermal stability of PVA fiber strain hardening cement-based composites

Magalhães, Margareth da Silva; Filho, Romildo Dias Toledo; Fairbairn, Eduardo de Moraes Rego

doi:10.1016/j.conbuildmat.2015.07.039

Cited by 65 publications

(21 citation statements)

References 19 publications

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“…Also, this fibre has good resistance to chemical attack, typically in alkaline condition, due to the presence of acetate group (CH 3 CO 2 -), *For correspondence which absorbs calcium hydroxides [10]. For these reasons, PVA fibre is commonly researched on for the development of FRCC [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Loh

Tan

et al. 2019

Sādhanā

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Fibre-reinforced cementitious composite (FRCC) is a type of composite that uses high volume of fibres to attain ductile properties. In this research, the effects of two different fibres, namely polyvinyl alcohol (PVA) and basalt, on the mechanical properties of FRCC such as compressive, splitting tensile and flexural strengths were investigated. The fibres were used in varying volume fraction, which includes 1.0%, 1.5% and 2.0% and a hybrid combination of 1.5% basalt fibre with 1.5% PVA fibre for the preparation of the FRCC. The results showed that while the fibres had minimal effect on the compressive strength of FRCC, significant improvements in the splitting tensile and flexural strengths were found. In the comparison of the flexural performances, the introduction of PVA fibre in FRCC led to superior properties and it exhibited more ductile failure mode compared with basalt fibre and the optimum fibre dosage to be added was determined to be 1.5%.

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Section: Introductionmentioning

confidence: 99%

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Loh

Tan

et al. 2019

Sādhanā

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“…where: A slightly modified version of the crack density, i.e., the parameter expressed as number of cracks per meter [13,96,100], is also encountered in the research. In this version, the crack density is more convenient to use, because in order to get the result it is necessary to count the number of cracks crossing the test line, and relate the result to the situation when the test line would be 1 m long.…”

Section: The Crack Densitymentioning

confidence: 99%

“…Magalhaes et al [100] examined the mechanical response of a cement composite with PVA fibers. The samples were preheated at 90-250 • C. Next, uniaxial tensile, bending and compressive strength tests were carried out, during which the crack width and the crack density were measured.…”

Section: Performance At Elevated Temperaturesmentioning

confidence: 99%

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Szeląg

2020

Materials

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The structure and the development degree of a cracking pattern has a key impact on the durability of cement composites. This literature review focuses on the four most important aspects related to the evaluation of the surface cracking patterns, i.e., the process of formation, propagation and evolution of cracks into a branched system of cracks from the point of view of the fracture mechanics; the detection techniques of the cracking patterns on the surface of cement composites, where the tools of computer image analysis are the most used; parameters which can quantify the development degree and morphology of the cracks system; and also the influence of a cracking pattern on the functional features of cement composites. The studies described so far indicate the necessity of continuous development of this research area, because the knowledge of key relationships between the cracking patterns and functional properties of a cement composite is necessary to estimate the degree of material degradation. Researchers agree that the works carried out in the field of evaluation of the cracking patterns, to a large extent, contributes to the development of non-destructive testing methods in the field of cement composites technology.

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“…The selection of surface functional groups influences the creation of interfacial interactions with filler and polymer and can guide the construction of greater utility polymer composites. The mixing of filler, such as starch [14], clay [15], sugarcane [16], wood dust [17], TiO 2 [18], cement [19], organo-ceramics [20] and carbon nanotubes [21] with PVA is a modern technique for the development of biodegradable composite. PVA composites have broad applications in the food packaging by film [22] and in optical holography fiber [23], sizing and finishing in textile industries, adhesives, coatings, emulsifiers, colloidal stabilizers, solar cell [18] and fuel cell [24].…”

Section: Introductionmentioning

confidence: 99%

Red mud reinforced polyvinyl alcohol composite films: synthesis, chemical, mechanical and thermal properties

2019

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Nowadays biodegradable polymer draws much attention to the researcher compared to the petroleum-based nonbiodegradable polymer due to the environmental and energy crisis. Aluminum industry waste red mud (RM) reinforced with polyvinyl alcohol (PVA) organic-inorganic composite film was synthesized by sol-gel method. The effects of sodium lauryl sulfate (SLS) as a compatibilizer on the composite were investigated. The composites were characterized by UV absorption, Fourier transforms infrared spectrophotometer (FTIR), X-ray diffraction, scanning electron microscopy (SEM), EDX. Chemical, mechanical and thermal properties of the composites were investigated with different amount of red mud-PVA and also the comparison between them without and with SLS addition. Physical and chemical bonding in the PVA, PVA-RM, and PVA-RM-SLS were shown through FTIR spectra. SEM images exhibit excellent compatibility between PVA and RM in the composite. Degree of swelling and tensile strength were increased by 71.48% and 194.88% respectively, and again percentage of elongation at break and solubility were decreased by 98.07% and 78.07% respectively for the PVA-RM-SLS composite compared to virgin PVA. TGA thermogram reveals that PVA-RM-SLS system had more thermal stability than pure PVA. All the results showed excellent adhesion between PVA and red mud and established the effect of RM as filler and SLS as compatibilizer. This composite is suitable as packaging materials.

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Thermal stability of PVA fiber strain hardening cement-based composites

Cited by 65 publications

References 19 publications

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Red mud reinforced polyvinyl alcohol composite films: synthesis, chemical, mechanical and thermal properties

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