externally bonded reinforcement on grooves (ebrog) is a new method that has been introduced to postpone or eliminate debonding of frp sheets from concrete surface in concrete beams strengthened for flexure and increase loading capacity. for strengthening reinforced conceret beams in strructure, use of different types of frp like: laminate, afrp, cfrp, and gfrp. by there is some differences betw...

There is a growing need for the rehabilitation, repair, and upgrading of concrete structures such as bridges and buildings. The repair or rehabilitation of reinforced concrete structures often offers a lower cost alternative to rebuilding, and it is traditionally achieved by bonding steel plates to the tensile face of a reinforced concrete member. The shear strength can be enhanced with plates ...

As contemporary emerging materials, fiber-reinforced plastics/polymers (FRP) are widely used in aerospace automotive industries and other fields due to their high strength-to-weight ratio, stiffness-to-weight corrosion resistance, low thermal expansion properties. Drilling is the most frequently process industrial operation for polymer composite laminates, owing need joining structures. However...

This paper presents test results obtained from an experimental investigation to check the feasibility of reinforcing laminated bamboo columns by using aramid fiber reinforced polymer (AFRP) composites and examine effect slenderness ratio on AFRP columns. Eighteen full-scale were grouped into 6 categories including 3 specimens without reinforcements. Obtained used study failure modes, ultimate l...

Abstract In this study, aramid fiber-reinforced polymer (AFRP) composites were prepared and then postcured under specific heating/cooling rates. By dynamic mechanical analysis, the viscoelastic properties of AFRP at elevated temperatures various frequencies determined. Thermomechanical analysis (TMA), in modes creep-recovery stress–relaxation tests, was also performed. Furthermore, differential...

This paper focuses on the aramid fiber-reinforced polymer (AFRP) sheet bonding method to investigate influences of volume and input impact energy failure modes strengthened RC beams. The drop-weight loading tests were conducted beams with AFRP sheets. was investigated, varying from 415 1660 g/m2. force generated by dropping a 300 kg steel weight onto midspan different heights (0.5, 1.0, 2.0, 2....

 Externally Bonded Reinforcement on Grooves (EBROG) is a new method that has been introduced to postpone or eliminate debonding of FRP sheets from concrete surface in concrete beams strengthened for flexure and increase loading capacity. For strengthening reinforced conceret beams in strructure, use of different types of FRP like: laminate, AFRP, CFRP, and GFRP. By there is some differences bet...

This paper presents a method of analysis for the response of concrete beams reinforced with fibrereinforced-plastic (FRP) tension rods and aramid spirals. Three different kinds of longitudinal reinforcement are adopted; CFRP, AFRP and GFRP. Both under-reinforced and over-reinforced sections are described. It is found that the ratio of neutral axis depth and effective depth can be used as an ind...

In the current scenario, natural fiber reinforced polymer nanocomposites are widely used in the areas of aerospace, automobile, sports and military sectors due to its multi-functional features like high specific strength, high corrosion resistance, flame resistance, improved mechanical properties and low cost when compared with artificial fiber reinforced composites. These polymer based nanocom...

Aramid fiber-reinforced plastic (AFRP) composites are widely used in aerospace, rail transit, marine and military industries, due to their high specific strength, impact resistance, fatigue resistance excellent designable properties. In order meet different application requirements, cutting processes need be carried out, such as window opening, edge slit cutting. However, the characteristics of...