scholarly journals Effect of Grey and White Portland Cement Fillers on Flexural and Shear Strength of GFRP Composite Material

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
D. Harsha Vardhan ◽  
D. Sai Chaithanya Kishore ◽  
Y. Santhosh Kumar Reddy ◽  
K. Manohar Reddy ◽  
Gujjala Raghavendra ◽  
...  
Keyword(s):  
Shear Strength ◽  
Polymer Matrix Composites ◽  
High Strength ◽  
Filler Materials ◽  
Matrix Composites ◽  
Reinforced Polymer ◽  
White Cement ◽  
Glass Fiber Reinforced ◽  
Gfrp Composite ◽  
White Portland Cement

The mechanical behaviour of glass fiber reinforced polymer (GFRP) composite depends on the type of matrix, filler, and fiber architecture. In order to develop high-strength polymer matrix composites, the composites containing 5%, 10%, and 15% each of Portland grey and white cement filler are prepared by uniformly mixing the epoxy and filler materials, followed by casting by hand layup technique. The flexural and shear test is performed in accordance with ASTM 790 and ASTM D5379, respectively. It has been found that the values of shear strength, flexural strength, and modulus of elasticity vary with the increasing amount of cement component in the polymer. In addition, for a given percentage of the components of the cementitious filler, the values of the mechanical strength of the composites that contain white cement are higher than those of the composites that contain grey cement filler. Damage to composites has been found to involve fiber breakage and delamination primarily.

Studies on Mechanical Properties of Kevlar Fiber Reinforced Iron (III) Oxide Nanoparticles Filled Up/Epoxy Nanocomposites

2013 ◽  
Vol 747 ◽  
pp. 409-412
Author(s):  
S. Julyes Jaisingh ◽  
V. Selvam ◽  
M. Suresh Chandra Kumar ◽  
K. Thyagarajan
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix Composites ◽  
High Strength ◽  
Fiber Reinforced Polymer ◽  
Oxide Nanoparticles ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Kevlar Fiber ◽  
Reinforced Polymer ◽  
The Matrix

Fiber reinforced polymer matrix composites have extensively been used in various fields such as aerospace industries, automobiles, marine, and defense industries because of their high strength/weight ratios. In this paper, effect of silane modified iron (III) oxide nanoparticles on the mechanical properties of Kevlar fiber reinforced epoxy composites has been investigated. Composites samples were prepared, each using eight layers of Kevlar fiber reinforced epoxy filled with silane modified iron (III) oxide nanoparticles. The fractured surfaces of fibre reinforced composites were characterized by SEM. Tensile and flexural strength was studied as per the ASTM standards. Based upon the results it is clear that the miscibility of the silane modified iron (III) oxide nanoparticles in the matrix system is of the prime importance with regard to performance.

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