Papers by Keyword: Glass Fiber

Abstract: Concrete is the most important building material in construction industry because of its revolutionary property of quick hardening and free from internal problems. Its use has a great effect on environment due to the large amount of natural resources and cement lime materials required for manufacture the concrete structures. Now it’s the time for think in the direction of Eco-friendly durable materials in concrete production. In the present work, Quarry Dust and Foundry Sand are partial replaced River Sand to develop Rheological and Durability properties of M40 grade of Eco-Efficient Self-Compacting Concrete (ESCC). The target strength could be achieved satisfying the rheological properties of Eco-Efficient Self-Compacting Concrete with fiber additions. In this study investigations carried to find the Permeability, Shrinkage, Acid attack and Rapid Chloride Permeability Test (RCPT) of Eco-Efficient Fiber based Self-Compacting Concrete and it is observed that it is no way inferior to the conventional concretes. From the experimentation, it is recommended that waste materials from different source are fitting to be used as fine materials in concrete. The construction cost reduces by utilising such waste as fine aggregate in place of aggregate from natural source for construction.

Abstract: The epoxy primer coatings with various size of treated glass fiber was successfully developed using hand brushing technique on carbon steel plate. The glass fibers used were treated with silane coupling agent, 3-aminopropyl triethoxysilane. The Fourier Transform-Infared Spectroscopy (FTIR) affirmed the presence of silanol group at 1221.12cm^-1 .Hence, the primer coating was prepared with three different sizes of treated glass fiber (45, 150, and 250 μm) and the corrosive properties has been studied. The corrosion rate was determined using Tafel plot and the immersion test was done in 3.5% NaCl and sea water for 9 days. Formulation of epoxy resin-GF-45μm displayed the optimum size to reduce the corrosion rate of epoxy primer coatings at 8.3713 mm/year and polarization resistance was the highest at 107.48Ω which indicates that epoxy coating have higher resistance towards corrosion, coating adherence and there was formation of more protective film on steel.Whilst immersion in 3.5% NaCl solution and sea water followed the same trend with 45 μm exhibited the less corrosive behavior for 9 days exposure. When the solution penetrated into the coating, the ultra-short glass fibers prevent the water from permeating and prolong the water diffusion path. Thus, it provided good anti-corrosive properties for formulation 2 at 45μm GF. In conclusion, the size of GF plays an important role in determining the corrosive behavior of epoxy primer coatings. The optimum size of GF at 45 μm proved to diminish the corrosiveness of carbon steel plate.

Abstract: In this paper, phenolic resin-based composite materials were prepared using glass fiber instead of asbestos for the oil driller brake friction materials, and its impact performance and friction and wear properties were investigated, and compared with performance of asbestos containing material. The results showed that the impact strength of glass fiber reinforced material were higher than that of asbestos reinforced material. When the friction speeds were constant, the friction coefficient of asbestos reinforced material changed in the range of 0.308~0.4302, and the glass fiber reinforced material was 0.308~0.425.The glass fiber can replace asbestos as a reinforced material for oil driller brake friction materials.

Abstract: Lead or low temperature melting alloys have been sucessfuly utilized as a filling medium in tube forming processes, such as bending and bulging; however, strict lead-free-control plan in industries have prohibited the use of lead in recent years. The authors suggest the use of fiber-reinforced ice (FRI) as an alternative. Fiber of recycled paper was utilized for the preparation of FRIs, and the results of compression tests revealed that the fabricated FRIs exhibit sufficient crushing-strength suitable for use as an alternative for lead-filled media. However, the high density of the fiber in the mixture of fiber and water makes it difficult to fill a tube with the fiber in the pre-freezing process owing to its high vscosity. Therefore, it is useful to examine other strong fibers for FRIs to reduce the ratio of the fiber. In this study, the authors examined glass fibers as reinforcement in FRIs. Compression tests were conducted at various crosshead speeds, and the difference in the stress-strain behaviors of the FRIs with glass fiber and paper-pulp fiber was analyzed.

Abstract: Natural fiber reinforced polymer composites are generally lower in mechanical performance compared to synthetic fiber reinforced polymer composites. However, this disadvantage can be improved via chemical modification of the natural fiber and hybridization with synthetic fiber. In this study, kenaf bast fiber was used as reinforcement in unsaturated polyester composites. It was subjected to chemical modification with maleic anhydride at various treatment time i.e. 60, 90 and 120 minutes prior to composites production. The untreated and MA treated kenaf bast fiber were hybridized with 10 weight percent of glass fiber to produce kenaf bast/glass fiber reinforced unsaturated polyester composites. The effect of treatment time on weight percent gain and functional group changes via infra-red spectra of kenaf bast fiber were investigated. The effect of treatment time on tensile properties of kenaf bast fiber and kenaf bast/glass fiber reinforced unsaturated polyester composites were also studied. It was revealed that the weight percent gain of kenaf bast fiber increased with the increasing of treatment time. The increasing of treatment time resulted in the enhancement of tensile strength and modulus of kenaf bast fiber and kenaf bast/glass fiber reinforced unsaturated polyester composites which were attributed to the presence of C=C bonds of maleic anhydride and has been proven through fourier transform infrared spectrum.

Abstract: This paper investigates the effect of glass fiber reinforcement on the shear strength properties of the sand clay mixture. The soil samples were prepared by mixing 50% of locally available Barak river sand with 50% of local clay soil. Triaxial tests were conducted on the soil samples containing five different percentage of fiber to know the effect of fiber content on the shear strength of the soil. Unconsolidated Undrained (UU) Triaxial tests were conducted under three different confining pressures for each sample. Samples were prepared with five different values of moisture content considering 2% less than OMC (Optimum Moisture Content), 1% less than OMC, OMC, 1% more than OMC, and 2% more than OMC to study the effect of water content (w) on behavior of fiber reinforced soil. A parametric study has been carried out in this paper to know the effect of different influencing parameters on the cohesion value and angle of internal friction. The results show that the failure stress and angle of internal friction increase with increase in fiber content up to an optimum value then decrease. On the other hand, the cohesion value increases consistently with increase in fiber content. The study also indicates that the peak deviator stress, angle of internal friction and cohesion values increase with increase in water content up to an optimum value which is less than OMC then decrease with further increase in water content.

Abstract: The study of vibration-damping factor on unsaturated polyester resin reinforced glass and kenaf fiber has been performed. Two variations of glass and kenaf fibers were made based on fiber volume fraction (V_f) and ratio of glass to kenaf fiber at V_f of 25 %. The measurement of the samples was to obtain the value of the vibration-damping factor and the elastic modulus. The result shows that the vibration-damping factor decreases proportionally to the addition of fiber. Increased stiffness is evidenced by an increase in elastic modulus along with an increase in fiber content. According ratio of glass to kenaf fiber, the vibration-damping factor decreases proportionally with the increasing of glass fiber content. Increased kenaf fiber content causes an increase in vibration-damping factor, a decrease in elastic modulus, and lead to decreased in stiffness of the hybrid composite.

Abstract: The aim of this paper is to investigate the behavior of the recycled polymer containing the filler. The recycled polymer under investigation is polypropylene with a glass fiber filler. During grinding of plastic waste particles are formed which have a different size, shape and surface, from larger pieces to dust particles. Several recycled mixtures were made, all from original material. Samples with different particle size of recycled material were subsequently tested by mechanical testing. Included tests were Charpy impact test and Shore hardness test. Testing was conducted at different temperatures; ambient 23 °C and increased temperatures 60 ° and 100 °C. The results show a very large effect on Charpy properties and a lesser influence on the hardness of these mixtures. Mixture of smallest dust particles indicates larges change of measured properties.

Abstract: Aluminium composites are in predominant use due to their lower weight and high strength among the MMC’s. Aluminium 6061 is selected as matrix and E-glass fiber is selected as reinforcement. Fabrication of composite is done by stir casting method. Each fabrication carries the E-glass reinforcement content varied from 2% to 10%. The present article attempts to evaluate the mechanical properties of E-glass fibre reinforced composite and study the effect of reinforcement on the matrix alloy through mechanical properties. When compared to ascast mechanical properties the UTS has increased from 74.28 N/sq mm to 146.8 N/sq mm for a composite at 6% E-glass. The hardness of as-cast has also increased from 22 RHB to 43 RHB at 6% E-glass and the wear of composite has exhibited a decreasing tend with increase in reinforcement content along the sliding distance. The results are analyzed in certain depth in the current paper. The mechanical properties of composites have improved with the increase in the weigh percentage of glass fiber in the aluminium matrix.

Abstract: This research paper studies the influence of preparation method of recycled polymer material with glass fibers on the tensile properties of the final product. The recycled material was made from polypropylene, which originally contained 30 % of glass fibers. It was divided into fractions using size of the crushed particles. These fractions ranged from large particles, similar to the original material, to small dust particles. Measurements were performed at various temperatures. It was found that the mixture of dust particles showed a large decrease in measured properties. It is mainly due to shortening of the large glass fibers, so that it no longer fulfills its function as reinforcing filler. Conversely, mixture with larger particles did not show a significant decrease in properties compared to the original material.