Carbon Fiber Reinforcement

The research on carbon fiber materials used in the reinforcement and repair of concrete structures began in the 80s in developed countries such as the United States and Japan. This technology in China started relatively late. However, with the rapid development of China's economic construction and transportation, a considerable part of the existing buildings caused problems left over from history due to the low design load standards at that time. Due to changes in the use function of some buildings, it is difficult to meet the needs of the current standard use, and it is urgent to repair and strengthen.

Technical Standard Editor of Carbon Fiber Reinforcement

The earliest domestically adopted specification was 2003 "Technical Regulations for Carbon Fiber Sheet Reinforced Concrete Structure", and its number was CECS146: 2003,

It has been replaced by the latest national standard code 2013 `` Code for Design of Reinforcement of Concrete Structures '', whose number is GB 50367-2013.

The most recent national standard for carbon fiber reinforcement is "Carbon Fiber Sheets for Structural Reinforcement and Repair" GB / T 21490-2008, which will be implemented from October 1, 2008.

"Technical Specifications for Safety Appraisal of Engineering Structure Reinforcement Materials"

The carbon fiber reinforced materials that meet the requirements of the national standard GB50367-2006 are:

1), carbon fiber unidirectional fabric cloth composite, 200-600 grams, and carbon fiber strip board

2), S glass cloth, 300g--450g

3), E glass fiber unidirectional fabric (cloth) 300 grams-450 grams

4), modified epoxy resin, used for bonding fiber cloth

5) Carbon fiber board, divided into 1.2mm and 1.4mm thick