Structural Enhancement of Framing Members Using Polyurea

Alldredge, David J.; Gilbert, John A.; Toutanji, Houssam; Lavin, Thomas; Balasubramanyam, Madhan

doi:10.1007/978-1-4614-0213-8_8

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…In the wooden structures, the main disadvantage of using materials such as epoxy or timber and wooden blocks to strengthen these structures is that these processes are time‐consuming. The application of the polyurea coating has been considered as a fast and effective approach for strengthening the wooden structures 55 …”

Section: Polyurea Coatings and Liningsmentioning

confidence: 99%

A review on the applications of polyurea in the construction industry

Shojaei

Najafi

Yazdanbakhsh

et al. 2021

Polymers for Advanced Techs

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Polyurea has drawn the attention of construction activists and engineers as a modern building material due to its unique structure, unique properties, and relatively easy application even in hard‐to‐reach places. A wide range of excellent properties such as durability and high resistance against the atmospheric, chemical, and biological factors have made this polymer a superb option for the construction industry. The ability to reinforce the building materials and structures coupled with excellent resistance against corrosion and abrasion has dramatically increased the popularity of polyurea as a protective coating in the construction industry. In these industries, sealing and insulating the different floors and surfaces have also been considered using the polyurea coating. Polyurea coating technology is a green technology without pollution and toxicity to the environment, which is an essential advantage over many competing technologies in the construction industry. The use of polyurea composite systems to optimize various properties such as mechanical and thermal properties in addition to reducing the costs and economic burden is increasing. In the present paper, multiple applications of polyurea‐based materials in the construction industry are discussed.

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Section: Polyurea Coatings and Liningsmentioning

confidence: 99%

A review on the applications of polyurea in the construction industry

Shojaei

Najafi

Yazdanbakhsh

et al. 2021

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…As a new type of polymer material, polyurea exhibits excellent wear and corrosion resistance [11]. It also demonstrates strong bonding capabilities with various substrates such as steel, wood, and concrete, making it an outstanding choice for surface protective coatings [12][13][14]. After completing the pouring and maintenance of a concrete construction, applying a spray coating to its surface can enhance the durability of the structure.…”

Section: Introductionmentioning

confidence: 99%

Degradation Behavior and Lifetime Prediction of Polyurea Anti-Seepage Coating for Concrete Lining in Water Conveyance Tunnels

Peng,

Ren,

Wang

2024

Materials

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In the lining of water conveyance tunnels, the expansion joint is susceptible to leakage issues, significantly impacting the long-term safety of tunnel operations. Polyurea is a type of protective coating commonly used on concrete surfaces, offering multiple advantages such as resistance to seepage, erosion, and wear. Polyurea coatings are applied by spraying them onto the surfaces of concrete linings in water conveyance tunnels to seal the expansion joint. These coatings endure prolonged exposure to environmental elements such as water flow erosion, internal and external water pressure, and temperature variations. However, the mechanism of polyurea coating’s long-term leakage prevention failure in tunnel operations remains unclear. This study is a field investigation to assess the anti-seepage performance of polyurea coating in a water conveyance tunnel project located in Henan Province, China. The testing apparatus can replicate the anti-seepage conditions experienced in water conveyance tunnels. An indoor accelerated aging test plan was formulated to investigate the degradation regular pattern of the cohesive strength between polyurea coating and concrete substrates. This study specifically examines the combined impacts of temperature, water flow, and water pressure on the performance of cohesive strength. The cohesive strength serves as the metric for predicting the service lifetime based on laboratory aging test data. This analysis aims to evaluate the polyurea coating’s cohesive strength on the tunnel lining surface after five years of operation.

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