Doped type triethanolamine benzoate concrete reinforcing bar corrosion inhibitor

Abstract

The invention discloses a concrete reinforcing bar corrosion inhibitor with triethanolamine benzoate as the main component. The corrosion inhibitor is specifically prepared from, by weight, 15-50% oftriethanolamine benzoate, 5-15% of phosphate, 5-10% of organic additive and the balance water. In use, the corrosion inhibitor is mixed with cement, sand, stone and other gel materials after being directly added to water to be dissolved and evenly mixed according to the recommended amount of the corrosion inhibitor, meanwhile the water consumption of concrete mixing is deducted according to the ratio of water in the corrosion inhibitor composition, and the addition amount of the corrosion inhibitor is calculated according to the weight of cement required for each cubic meter of concrete building. The reinforcing bar corrosion inhibitor can effectively control or relieve the corrosion to reinforcing bars in concrete, and the corrosion starting time of the reinforcing bars in the concrete isgreatly delayed. The corrosion inhibitor can be widely used for industrial and civil newly-constructed rebar concrete buildings such as coastal buildings, harbor wharfs, bridges and culverts.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to an incorporation type concrete reinforcement rust inhibitor mainly composed of triethanolamine benzoate. Background technique: [0002] A large number of engineering practices and studies at home and abroad have shown that the corrosion of steel bars is the main cause of premature degradation or failure of concrete structure performance, and the corrosion of steel bars is particularly prominent under marine environmental conditions. Corrosion of steel bars can not only lead to serious economic losses, greatly increase the repair and maintenance costs of reinforced concrete structures, but also related to personal safety, effective use of resources and environmental protection. According to reports, among the 140 billion U.S. dollars in economic losses caused by corrosion in five industrial sectors in the United States in 2002, the economic losses related to steel corrosion were...

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Problems solved by technology

The corrosion of steel bars can not only lead to serious economic losses, greatly increase the repair and maintenance costs of reinforced concrete structures, but also relate to personal safety, effective use of resources and environmental protection.

According to reports, among the 140 billion U.S. dollars in economic losses caused by corrosion in five industrial sectors in the United States in 2002, the economic losses related to steel corrosion were as high as 70 billion U.S. dollars. At the same time, the survey found that among the 600,000 reinforced concrete bridges in the United States, 50 Corrosion of steel bars occurred in more than 40% of the bridges, and the bearing capacity of 40% of bridges was insufficient due to corrosion of steel bars, and the annual repair and maintenance costs were as high as 50 billion U.S. dollars

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