The need for repair and strengthening of deteriorated, damaged and substandard infrastructures has become an important challenge worldwide. The demand for increasingly heavier truck loads is forcing bridge owners to upgrade existing structures. In response to the growing need for concrete repair and rehabilitation, an experimental program was conducted to investigate the feasibility of using di...

Many steel structures are in need of strengthening due to reqUirements to increase carrying capacity and/or rehabili tation due to corrosion degradation. This paper summarizes the results of an investigation that has been conducted to evaluate the performance of carbon fiber reinforced polymer (CFRP) materials to increase the strength and stiffness of steel structures. Two types of specimens we...

S ince 2000, the worldwide market for carbon-fiber-reinforced composite materials (CFRP) has grown from 30,500 to 43,500 tons per year. According to the latest estimates, the demand for carbon fibers will rise to some 1,300,000 tons by 2020 [1]. When preforms are used for manufacturing CFRP parts by the Liquid Composite Molding (LCM) process, up to 40 % waste accrues, resulting in a considerabl...

Carbon fiber reinforced polymer (CFRP) sheets are externally bonded to reinforced concrete (RC) members to provide additional strength such as flexural, shear, etc. It has been widely accepted that carbon fiber reinforced polymers (CFRPs) can be used effectively to strengthen reinforced concrete (RC) members. This paper is intended to study and use externally bonded CFRP strips to repair and st...

CFRP composites have unique application qualities such as high resistance and durability to environmental conditions, having relatively low weight and easy to install in strengthening concrete structure elements. The brackets should be strengthen sufficiently if they are not calculated and implemented well. Application of the CFRP is one of the methods for such purposes. The study involves usin...

this paper presents the results of analytical studies concerning the flexuralstrengthening of reinforced concrete beams by external bonding of high-strength lightweightcarbon fiber reinforced plastic (cfrp) plates to tension face of the beam. three groups of beamswere tested analytically and compared with existing experimental results. results of the numericalanalyses showed that, although addi...

Abstract: The performance of corroded reinforced concrete (RC) beams strengthened with externally bonded carbon fiber reinforced polymer (CFRP) materials may be affected by a weak interface caused either by defective bonding between the new and old concrete in the case of cover replacement or by expansive cracks in the case of direct application. To investigate this effect, thirteen strengthene...

Composites of carbon fiber reinforced plastics (CFRP) are being used to a greater extent in the aerospace industry due to their desired material properties. CFRP are attractive to use since they are light, strong and make it possible to integrate parts in in ways not possible in other materials. However, using CFRP is challenging since they may lead to more problems in final assembly. The aim o...