Primal Study on Mechanical Properties of Phosphate Based Geopolymer

2017 ◽  
Vol 726 ◽  
pp. 490-494
Author(s):  
Zhu Ding ◽  
Can Lu ◽  
Peng Cui ◽  
Wei Ting Xu
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Concrete Beam ◽  
Bending Strength ◽  
Fiber Composites ◽  
Bottom Surface ◽  
Strengthening Effect ◽  
Test Results ◽  
Inorganic Matrix ◽  
Strength And Ductility

A novel inorganic matrix for fiber composites prepared from phosphate based geopolymer (PBG) was synthesized at ambient temperature. The mechanical property of PBG paste and the carbon fiber reinforced PBG composite was determined. Test results showed that the compressive strength of PBG paste at the age of 28 days was found to be 33.67 MPa. Moreover, the carbon fiber sheets enhanced the bending strength and ductility of PBG paste by up to 1300% and 307% respectively. Finally, the strengthening effect of this new composite on concrete beam was evaluated. The carbon fiber PBG composite applied on the bottom surface of concrete beam increased the bending strength by 183%. Therefore, it is concluded that PBG can be a promising inorganic matrix that can be used to strengthen deteriorated concrete structures.

scholarly journals ANALISA SIFAT MEKANIK PENGARUH VARIASI PERENDAMAN DAN PENEKANAN PADA KOMPOSIT BERBAHAN SERAT BUNDUNG

ELKHA ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 119
Author(s):  
Sutrisno Sutrisno ◽  
Azmal Azmal
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bending Strength ◽  
Casting Process ◽  
Fiber Composites ◽  
Test Results ◽  
Resin Binder ◽  
Catalyst Content ◽  
Impact Bending ◽  
Fiber Breaking

This study aims to determine the effect of mechanical properties of impact, bending and tensile of bundle fiber composites with 5% NaOH variation of immersion time 0.5 hours, 1 hour and 1.5 hours. Then the blending and casting process is carried out to form a composite material with 20% fiber and 80% resin binder with a catalyst content of 1% and pressurized with press variations of 5 kg, 10 kg and 15 kg. The results of the blending and casting process are made according to the testing standard and then testing the mechanical properties. Impact, bending and tensile strength test results showed that immersion of 0.5 hours with 15 Kg concentration produced the highest value, namely Impact strength 94.89 J / mm2, bending strength 17.77 N / mm2 and tensile strength 27 N / mm2. Whereas the fracture form of the composite is the binding and fiber breaking evenly at the same point and the fiber is not pulled from the metric.

Influence of Extrusion Temperature on Property of Graphene Oxide-carbon Fiber Hybrid Reinforced Resin Matrix Composites

2021 ◽  
Author(s):  
Yuqin Ma ◽  
Fei Li ◽  
Wei Xu ◽  
Long Yan ◽  
Haiyin Guo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Carbon Fiber ◽  
Performance Test ◽  
Bending Strength ◽  
Extrusion Temperature ◽  
Resin Matrix ◽  
Strengthening Effect ◽  
Molding Process ◽  
The Matrix

Abstract The graphene oxide-carbon fiber hybrid reinforced resin matrix (GO-CF/EP) composites were prepared by vacuum infiltration hot-pressing molding process. The effects of extrusion temperature on the microstructure, fracture mechanism and mechanical properties of GO-CF/EP composites were investigated by setting different extrusion temperatures. In the experiments, the extrusion temperature was controlled as 30℃, 40℃, 50℃, 60℃ and 70℃ respectively. It was found that the best mechanical property of composites and infiltration effect of matrix in the fiber gap were obtained at the temperature of 50℃. The bending strength of the material reached 977 MPa through the performance test. The results showed the matrix viscosity was high and the fluidity was poor when the extrusion temperature was low. Poor penetration of the matrix resulted in a large number of fibers failing to bond together. The stress was difficult to transfer to other fibers through the matrix and the strengthening effect of graphene oxide (GO) was weak when the composite was subjected to external force. This phenomenon led to poor mechanical properties of composites. Under the condition of higher temperature, the flow speed of the matrix and the curing speed of composites could be improved. As a result, some of the matrix was solidified in advance while being pressed out, which led to cracks and other defects in the process of loading and affects the mechanical properties of the composites. However, the mechanical properties of the composites with higher extrusion temperature were better than those with lower extrusion temperature due to the existence of graphene oxide in the fiber gap.

Role of graphene oxide surface chemistry on the improvement of the interlaminar mechanical properties of resin infusion processed epoxy-carbon fiber composites

2017 ◽  
Vol 39 (S4) ◽  
pp. E2116-E2124 ◽  
Author(s):  
Gloria Ramos-Fernandez ◽  
María Muñoz ◽  
Juan C. García-Quesada ◽  
Iluminada Rodriguez-Pastor ◽  
Ignacio Martin-Gullon
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Carbon Fiber ◽  
Surface Chemistry ◽  
Fiber Composites ◽  
Oxide Surface ◽  
Carbon Fiber Composites ◽  
Resin Infusion

Bending properties of carbon fiber nanocomposites with lamination structure of reinforcement

2016 ◽  
Vol 36 (5) ◽  
pp. 481-487 ◽  
Author(s):  
Jun Hee Song
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Fiber Composites ◽  
Advanced Materials ◽  
Carbon Fiber Composites ◽  
Reinforced Composites ◽  
Bending Tests ◽  
Reinforced Plastics ◽  
Composite Samples ◽  
Vartm Process

Abstract Advanced materials with excellent performance are in high demand in modern industry. Carbon fiber composites offer a number of advantageous mechanical properties. A significant improvement in fiber-reinforced composites can be achieved by dispersing a very small amount of nanofiller in the resin. Vacuum-assisted resin transfer molding (VARTM) is one of the most important processes for producing reinforced plastics. In this work, several composite samples were fabricated with the infusion of carbon nanofibers (CNFs) into the epoxy matrix using VARTM process. Using scanning electron microscopy (SEM), it was confirmed that CNFs were well dispersed in the resin. Bending tests were performed to investigate the mechanical properties of the samples, and SEM, to examine the fracture surfaces.

Mechanical Properties of Low-Density SiC-Coated Carbon-Bonded Carbon Fiber Composites

2011 ◽  
Vol 9 (2) ◽  
pp. 401-412 ◽  
Author(s):  
Asher S. Ahmed ◽  
Zdenek Chlup ◽  
Ivo Dlouhy ◽  
Rees D. Rawlings ◽  
Aldo R. Boccaccini
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Low Density ◽  
Coated Carbon
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