Evaluating the potential use of recycled glass fibers for the development of gypsum-based composites

2022 ◽  
Vol 321 ◽  
pp. 126320
Author(s):  
R.M. Gonçalves ◽  
A. Martinho ◽  
J.P. Oliveira
Keyword(s):  
Glass Fibers ◽  
Recycled Glass ◽  
Potential Use

scholarly journals Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 698 ◽  
Author(s):  
Marcin Małek ◽  
Mateusz Jackowski ◽  
Waldemar Łasica ◽  
Marta Kadela ◽  
Marcin Wachowski
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Glass Fibers ◽  
Progressive Increase ◽  
Split Tensile Strength ◽  
Glass Waste ◽  
Poisson Coefficient ◽  
Recycled Glass ◽  
Setting Times ◽  
The World

The progressive increase in the amount of glass waste produced each year in the world made it necessary to start the search for new recycling methods. This work summarizes the experimental results of the study on mortar samples containing dispersed reinforcement in the form of glass fibers, fully made from melted glass waste (bottles). Mortar mixes were prepared according to a new, laboratory-calculated recipe containing glass fibers, granite as aggregate, polycarboxylate-based deflocculant and Portland cement (52.5 MPa). This experimental work involved three different contents (600, 1200, and 1800 g/m3) of recycled glass fibers. After 28 days, the mechanical properties such as compressive, flexural, and split tensile strength were characterized. Furthermore, the modulus of elasticity and Poisson coefficient were determined. The initial and final setting times, porosity, and pH of the blends were measured. Images of optical microscopy (OM) were taken. The addition of glass fibers improves the properties of mortar. The highest values of mechanical properties were obtained for concrete with the addition of 1800 g/m3 of glass fibers (31.5% increase in compressive strength, 29.9% increase in flexural strength, and 97.6% increase in split tensile strength compared to base sample).

scholarly journals Recycled Glass Fiber Composites from Wind Turbine Waste for 3D Printing Feedstock: Effects of Fiber Content and Interface on Mechanical Performance

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3929 ◽  
Author(s):  
Amirmohammad Rahimizadeh ◽  
Jordan Kalman ◽  
Rodolphe Henri ◽  
Kazem Fayazbakhsh ◽  
Larry Lessard
Keyword(s):  
Tensile Strength ◽  
3D Printing ◽  
Wind Turbine ◽  
Glass Fiber ◽  
Mechanical Performance ◽  
Glass Fibers ◽  
Turbine Blades ◽  
3D Print ◽  
Recycled Glass ◽  
Recycled Fibers

This research validates the viability of a recycling and reusing process for end-of-life glass fiber reinforced wind turbine blades. Short glass fibers from scrap turbine blades are reclaimed and mixed with polylactic acid (PLA) through a double extrusion process to produce composite feedstock with recycled glass fibers for fused filament fabrication (FFF) 3D printing. Reinforced filaments with different fiber contents, as high as 25% by weight, are extruded and used to 3D print tensile specimens per ASTM D638-14. For 25 wt% reinforcement, the samples showed up to 74% increase in specific stiffness compared to pure PLA samples, while there was a reduction of 42% and 65% in specific tensile strength and failure strain, respectively. To capture the level of impregnation of the non-pyrolyzed recycled fibers and PLA, samples made from reinforced filaments with virgin and recycled fibers are fabricated and assessed in terms of mechanical properties and interface. For the composite specimens out of reinforced PLA with recycled glass fibers, it was found that the specific modulus and tensile strength are respectively 18% and 19% higher than those of samples reinforced with virgin glass fibers. The cause for this observation is mainly attributed to the fact that the surface of recycled fibers is partially covered with epoxy particles, a phenomenon that allows for favorable interactions between the molecules of PLA and epoxy, thus improving the interface bonding between the fibers and PLA.

Effect of Solvent on Adhesion Property of Glass Fiber Recycled by Superheated Steam

2015 ◽  
Vol 1125 ◽  
pp. 286-289
Author(s):  
Jian Shi ◽  
Li Min Bao ◽  
Kiyoshi Kemmochi
Keyword(s):  
Glass Fiber ◽  
Superheated Steam ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Surface Cleaning ◽  
Adhesion Property ◽  
Adhesion Test ◽  
Recycled Glass ◽  
Glass Fiber Reinforced ◽  
Cleaning Machine

We developed a kind of technology to recycle FRP by superheated steam. In order to achieve the good adhesion between unsaturated polyester resin and recycled glass fiber on which there were some char impurities, a surface treatment should be carried out to remove them. After surface cleaning, the recycled glass fibers were remanufactured to glass fiber reinforced polymer (GFRP) for adhesion test. It was carried out to evaluate the effects of solution and soaking time. Samples of treated, recycled and virgin fibers were analyzed by scanning electron microscopy to determine visual signs of residual char impurities. SEM picture showed char impurities would decrease after surface cleaning by ultrasonic cleaning machine. Although detergent can make work life more environmental friendly, SEM micrographs indicated that there were less residual char impurities on glass fiber which cleaned by acetone. Results of adhesion test showed that adhesion property of remanufactured GFRP can be preserved about 90% of that of virgin GFRP. The recycled glass fibers were able to be used as feedstock for remanufactured GFRP with high mechanical properties.

scholarly journals Development of FRC Materials with Recycled Glass Fibers Recovered from Industrial GFRP-Acrylic Waste

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Kishan Patel ◽  
Rishi Gupta ◽  
Mohit Garg ◽  
Boyu Wang ◽  
Urmil Dave
Keyword(s):  
Glass Fiber ◽  
Mechanical Performance ◽  
Glass Fibers ◽  
High Water ◽  
Fiber Reinforced Concrete ◽  
Lower Amount ◽  
Fiber Reinforced ◽  
Industry Waste ◽  
Recycled Glass ◽  
Acrylic Waste

Fiber-reinforced concrete (FRC) and engineered cementitious composite materials have demonstrated promising requisite in construction industry owing to its superior mechanical and durability properties. In this study, a sustainable approach was taken, i.e., to use industry waste as a reinforcement with improved interfacial bonding leading to enhanced mechanical performance of FRC. An efficient in situ recycling process allowed the authors to extract glass fibers from glass fiber-reinforced polymer acrylic waste. Concrete mixes with low fiber dosages including 0.1%, 0.2%, and 0.3% (by volume) of recycled as well as virgin glass fibers were prepared. The slump of concrete was maintained ∼150 mm by using high water-reducing admixture (HWRA). Notably, lower amount of HWRA was required for raw glass fibers vis-à-vis recycled ones due to its hydrophobic nature. Overall, FRC enclosing 0.3% recycled glass fiber demonstrated >20% enhancement in compressive, split tensile, and flexural strength as compared to control (after 28 days of curing), also supported by morphological analysis.

scholarly journals Production and characterization of recycled polycarbonate based composite material containing recycled glass fibers

2017 ◽  
Vol 5 (4) ◽  
pp. 3439-3446 ◽  
Author(s):  
Ping Zhu ◽  
Xiankai Liu ◽  
Yangjun Wang ◽  
Chuanjin Guan ◽  
Yazheng Yang ◽  
...  
Keyword(s):  
Composite Material ◽  
Glass Fibers ◽  
Recycled Glass

The Reinforcing Mechanism of Recycled Glass Fibers and Milled Glass Fibers in Polypropylene Composites

2014 ◽  
Vol 915-916 ◽  
pp. 755-759 ◽  
Author(s):  
Yu Hua Qiao ◽  
Huai Min Miao ◽  
Yong Biao Xu ◽  
Wei Jiang ◽  
Yan Hong Zheng ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Glass Fibers ◽  
Polypropylene Composites ◽  
Recycled Glass ◽  
The Past ◽  
Global Demand ◽  
Pp Composites ◽  
Fiber Materials ◽  
Scanning Electron

A great amount of work has been done over the past few years to use the glass fibers reinforcing polypropylene (PP) composites. Due to the sharp resources recovery, and the global demand for fiber materials, there has been growing interest in the use of the recycled glass fibers (GF) (RGF) as an alternative. This work focuses on the reinforcing mechanisms of the glass fibers in PP composites. The reinforcing mechanism is evaluated by scanning electron microscopy (SEM) on the basis of the energy dissipation theory. The GF are the excellent supporting bodies. Interfacial debonding, fiber pullout and breakage dissipate tremendous energy. These factors cause improvements in the strength of the RGF/PP and MGF/PP composites.

A Comparative Study on Recycled Glass Fibers and Milled Glass Fibers as Reinforcement Fibers in Polypropylene

2014 ◽  
Vol 955-959 ◽  
pp. 2625-2628
Author(s):  
Huai Min Miao ◽  
Yong Biao Xu ◽  
Fei Xiong Zhang ◽  
Yu Hua Qiao ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Glass Fibers ◽  
Circuit Boards ◽  
Reinforced Polymers ◽  
Recycled Glass ◽  
Waste Printed Circuit Boards ◽  
Uniform Dispersion ◽  
Global Demand ◽  
A New Technique ◽  
Fiber Materials

Fibers reinforced polymers have received considerable attention from industry in recent years. Due to the sharp resources recovery, and the global demand for fiber materials, there has been growing interest in the use of the recycled glass fibers (RGF) as an alternative. This work focuses on comparing the RGF from nonmetals of waste printed circuit boards (PCBs) and virgin milled glass fibers (MGF) as reinforcement fibers in polypropylene (PP). The results show that toughness, strength, and rigidity of the composites can be improved simultaneously by the addition the RGF into PP. Meanwhile, the effect of the RGF on PP matrix is slightly higher than that of the MGF. The morphology, evaluated by scanning electron microscopy (SEM), indicates uniform dispersion of both types of the fibers in the PP matrix. Based on comprehensive consideration of the mechanical properties, thermal properties, economy and environment, the RGF could replace traditional MGF for producing PP plastic products and can bring a good economic benefit to enterprises. This would develop a new technique for meeting the demand of the glass fiber materials and resolving the environmental pollution.

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