New Product Announcement: Textured Epoxy Coating

TUESDAY, APRIL 16, 2024


Global coatings company The Sherwin-Williams Company has recently unveiled its new textured epoxy coatings (TEC) for concrete and construction applications.

According to an emailed release from Sherwin-Williams Protective & Marine, Sher-Bar TEC can offer increased bond strength, damage tolerance and corrosion resistance for horizontal and vertical concrete projects, helping to reduce the environmental impacts from construction and maintenance.

“Sher-Bar TEC is a breakthrough in concrete and construction innovation,” said Jeffrey Rogozinski, Global Director of Functional Coatings for Sherwin-Williams Protective & Marine.

“The textured epoxy coating has the potential to significantly extend the lifespan of critical infrastructure assets – offering a cost-effective solution that adds unprecedented value. With this novel TEC technology, Sherwin-Williams Protective & Marine is ushering in a new era of infrastructure protection and sustainability.”

Sher-Bar TEC reportedly works as a secondary coating to protect the epoxy-coated rebar (ECR) corrosion protection solution, often referred to as “green bar.” With a smoother surface than uncoated rebar, ECR can reportedly cause reduced bond strength with concrete, requiring the use of more rebar in projects.

The use of additional rebar can add costs and weight, as well as on-site rebar grid congestion when pouring concrete. These drawbacks have reportedly worked to limit the use of ECR worldwide, leaving structures at risk of corrosion and decay.

Alternatively, Sherwin states that Sher-Bar TEC can offer improvements over both ECR and uncoated rebar, known as “black bar.” Tests by independent labs and research universities have reportedly proven Sher-Bar TEC’s performance in bond strength, durability and corrosion resistance.

Sherwin adds that the application for Sher-Bar TEC is efficient in highly controlled shop conditions. After coating the rebar with powdered fusion-bonded epoxy to create ECR, the powdered Sher-Bar TEC is immediately applied.

The two layers reportedly cure at the same time to form a monolithic coating, which helps improve barrier and durability properties for corrosion resistance and damage tolerance. Additionally, the resulting texture can help to restore the bonding interaction between the steel and concrete that is lost with smooth ECR surfaces.

Sher-Bar TEC is also reportedly made with up to 30% upcycled materials redirected from landfills. Sherwin states that the coating supports environmentally friendly practices and the use of alternative cementitious technologies to reduce carbon emissions associated with concrete production.

Sher-Bar TEC reportedly works as a secondary coating to protect the epoxy-coated rebar (ECR) corrosion protection solution, often referred to as “green bar.” With a smoother surface than uncoated rebar, ECR can reportedly cause reduced bond strength with concrete, requiring the use of more rebar in projects.

According to a study by the Wisconsin Department of Transportation, the epoxy coating can cut back on rebar overlap by 10% to 60%, compared to black bar and ECR. This can reportedly aid in reducing project weights, raw material costs and logistical expenses while using higher grades of concrete.

Sherwin adds that tests at the University of Illinois have indicated that cracks in concrete with Sher-Bar TEC-coated rebar were around half the width of those with ECR bars. The company suggests that this could mean less road salt and water getting into concrete and meeting rebar to promote corrosion.

Additional tests had reportedly showed that concrete with Sher-Bar TEC-coated rebar has lower levels of stress since the textured rebar was more engaged in the structure. Sherwin states that the new product is expected to help redefine the current standards for rebar coatings.

Research for this new epoxy coating also reportedly led to the development of the new ASTM A1124/A1124M-23 Standard Specification for Textured Epoxy-Coated Steel Reinforcing Bars, highlighting the role of TEC in the construction industry.

“Extensive testing has shown that Sher-Bar TEC is a unique and value-adding solution compared to existing rebar coatings and black bar,” said Anthony Del Percio, North American Sales Manager for Rebar, Valve and Traffic Markings for Sherwin-Williams Protective & Marine. “Its performance marks a significant leap forward in the realm of concrete reinforcement.”

   

Tagged categories: Asia Pacific; Coating Materials; Coating Materials; Coating types; Coatings; Coatings Technology; concrete; Concrete coatings and treatments; Corrosion; Corrosion protection; Corrosion resistance; Durability; EMEA (Europe, Middle East and Africa); Epoxy; Latin America; New Product Spotlight; North America; Powder Coatings; Protective Coatings; Rebar; Research; Research and development; Sherwin-Williams; Testing + Evaluation; Z-Continents

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