Doped organic indican concrete reinforcement corrosion inhibitor and application

Abstract

The invention relates to the field of building materials, in particular to a doped organic indican concrete reinforcement corrosion inhibitor and application. The corrosion inhibitor disclosed by the invention is composed of the following components by weight percent: 5-15% of organic indicant, 5-10% of organic amine, 5-10% of organic alcohol, and 65-85% of water. When being used, the corrosion inhibitor disclosed by the invention is directly added into water to be dissolved according to the suggested amount of the corrosion inhibitor; simultaneously, the corresponding water amount is deducted according to the proportion of water in the components; the addition amount of the corrosion inhibitor disclosed by the invention is calculated according to the cement amount required for every cubic metre of concrete structure; the doped organic indican concrete reinforcement corrosion inhibitor disclosed by the invention is capable of effectively retarding corrosion of concrete reinforcements and prolonging the induction time of chloridion to locally corrode reinforcements and is free from obvious negative impacts in the structural performances of the concrete body; and the doped organic indican concrete reinforcement corrosion inhibitor disclosed by the invention can be widely applied to offshore, harbour, wharf, coastal and civil reinforced concrete buildings.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a blended organic glycoside concrete steel bar rust inhibitor and its application. Background technique [0002] The corrosion of steel bars is one of the main reasons for the performance failure of marine concrete structures, which seriously affects the safety and service life of reinforced concrete structures. A large number of engineering practices and studies have shown that in the complex and heterogeneous system of reinforced concrete, the failure process is often accompanied by a series of chemical and electrochemical reactions, which can mainly cause the decrease of the pH value in the concrete and the degradation of the concrete, and the carbonation of the concrete. and Cl ˉ Erosion is the main cause of performance failure of reinforced concrete structures. [0003] Corrosion of reinforced concrete not only causes huge economic losses, but also seriously affects the s...

AI Technical Summary

Problems solved by technology

Although it has a good anti-corrosion effect, since this kind of substance is a typical anodic anti-corrosion agent, its protective performance and long-term protective effect are not only closely related to the concentration, but also if the minimum protective concentration requirement is not met during use, May promote corrosion of rebar

In addition, the carcinogenic effect of nitrite and the pollution to the environment have also greatly restricted its application, and Western developed countries have banned the use of nitrite.

There are few types of rust inhibitors that can effectively reduce the corrosion rate of steel bars and have no negative impact on the performance of concrete. The toxicity of traditional rust inhibitors and the impact on the mechanical properties of concrete have made the existing rust inhibitors unable to meet the current needs.

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