Minimize rust removal from rebar after chipping. Stabilize rust simply by applying a coating, and proceed to the next process.
In tunnel maintenance, rust on rebar can cause concrete spalling and section loss, leading to a decrease in the durability of the structure. Particularly inside tunnels, issues such as work restrictions, extended construction periods, and increased costs associated with repair work are significant challenges. Amid these challenges, spalling repairs require treatment of the rust on exposed rebar after chipping, which traditionally has demanded considerable time and effort for surface preparation. By using Select Coat N300, the remaining red rust on exposed rebar can be chemically treated and converted into a stable state. This allows for the omission of excessive rust removal work, contributing to the rationalization of the repair process, shortening of construction periods, and reduction of total costs. 【Application Scenarios】 - Spalling repair of rebar inside tunnels - Rust treatment of rebar before cement and mortar placement - Reduction of work burden in repair construction 【Implementation Effects】 - Suppresses the progression of rust on rebar, contributing to improved durability - Shortens construction processes, leading to reduced construction periods and costs - Contributes to safety and reduced environmental impact through the use of water-based paint
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basic information
【Features】 - A new rust prevention method that converts rust into a black coating, eliminating the need for complete rust removal (only loose rust is removed) - Corrosion protection technology that has undergone verification testing and performance evaluation by the Ministry of Land, Infrastructure, Transport and Tourism - Applicable to iron surfaces, galvanized steel, and non-ferrous metals such as aluminum through new bridge construction technology - Designed to accommodate everything from emergency measures to full-scale rust prevention strategies - Easy and safe to handle with a water-based one-component formulation 【Packaging】 - 16 kg - 1 kg 【Our Strengths】 Alpha Paint Co., Ltd. develops and manufactures high-performance, environmentally friendly coatings. The rust-conversion type anti-rust paint "Select Coat N300" balances labor-saving and high rust prevention performance, and is used in many sites, including public works.
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**Selection and Registration Achievements in New Technology and New Construction Method Systems by Various Local Governments** This construction method has received a certain level of technical evaluation in the new technology and new construction method systems of various local governments, which are in a third-party position, and has been registered and selected as follows: - February 28, 2024: Registered in the "List of New Technologies and New Construction Methods" by the Chugoku-Shikoku Agricultural Administration Bureau - March 8, 2024: Registered in the "New Technology and New Construction Method Utilization System" by Fukuoka Prefecture - March 15, 2024: Registered in the "New Technology and New Construction Method for Fiscal Year 2023" by the Kyushu Agricultural Administration Bureau - April 1, 2024: Registered in the "New Technology Information Provision Database System (IT'S)" by Ibaraki Prefecture - July 23, 2024: Registered in the "New Technology Utilization Promotion System" by Miyazaki Prefecture - September 25, 2024: Registered in the "New Technology and New Construction Method Information Database" by Shizuoka Prefecture - November 5, 2024: Selected as "New Materials and New Construction Methods" by the Tokyo Port Authority - August 6, 2025: Selected as "New Technology" by the Tokyo Construction Bureau - January 15, 2026: Included in the report of the "Infrastructure Maintenance Practical Forum" for Fiscal Year 2025 (Civil Engineering Society Infrastructure Maintenance Committee) These registrations and selections are based on actual construction performance and performance evaluation results, serving as indicators of the practicality and reliability of this construction method. (*For performance data, please inquire separately.)
Detailed information
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It has been selected as a method that can be directly painted over rust in the Ministry of Land, Infrastructure, Transport and Tourism's technical recruitment (thematic type). The results of the composite cycle test showed no signs of rust, peeling, or blistering, confirming its high corrosion resistance performance.
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It has been confirmed through tests that even non-ferrous metals such as aluminum and zinc-coated materials, which are generally considered difficult to adhere to, show high adhesion properties. By simultaneously repairing corroded areas and protecting sound parts, an extension of the structure's lifespan can be expected.
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Alpha Paint Co., Ltd. is a company that sells high-performance eco-friendly products such as heat-insulating paints and rust conversion paints. Our main products include the heat-insulating paint "Select Coat S110" and the rust conversion anti-corrosion paint "Select Coat N300." Alpha Paint aims to prevent global warming and maintain and protect the environment through the development and manufacturing of eco-friendly products.
