Structural adhesive for steel bonding

Abstract

The invention discloses a structural adhesive for steel bonding, which comprises a component A and a component B of which the quality ratio is 100:(15-65), wherein the component A comprises epoxy resin, diluter, plasticizer, toughener and couplant; and the component B comprises modified polyamide resin, modified fatty amine and amino terminated polyether. The structural adhesive has the advantages of favorable bonding property, uniform stress distribution, high shearing strength and good mechanical toughness, has the characteristics of no flow after plate bonding, large anchorage withdrawal resistance and limit of harmful substances far below the national technical index, has the characteristics of high durability, convenient construction and stable strength, and can well soak the concrete and well bond the concrete and steel plates. The invention has high application and popularization values.

Description

technical field [0001] The invention relates to a structural adhesive for bonding steel. Background technique [0002] 1. Current status of highway bridge reinforcement in my country [0003] According to the 2004 National Highway Statistical Annual Report, as of the end of 2003, there were 10,443 dangerous bridges in the country with a length of 378,439 meters, including 1,942 dangerous bridges in the middle of the road with a length of 110,000 meters. There are more than 12,000 bridges (approximately 470,000 linear meters) on the national and provincial highways whose technical status falls into the third category. Bridges with obvious safety hazards are likely to be transformed into Dangerous bridge. Therefore, a huge number of bridges need to be repaired, strengthened and reconstructed. [0004] In the past 20 to 30 years, the focus of bridge construction in foreign developed countries has been placed on the reinforcement and reconstruction of old bridges, while new b...

AI Technical Summary

Problems solved by technology

Among these concrete buildings and structures, due to design and construction defects and aging, damage and disasters during long-term use, many problems such as cracking of concrete structures, poor seismic performance, and insufficient bearing capacity affect their safety and use functions. There is an urgent need for effective, durable, and easy-to-construct high-tech materials and construction techniques for reinforcement and repair

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