Crushing strength of concrete rings with a polyurea reinforce system

Szafran, Jacek; Matusiak, Artur

doi:10.1016/j.tust.2020.103407

Cited by 21 publications

(12 citation statements)

References 23 publications

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“…It is also possible to isolate the concrete structures against the impact, chemical corrosion, fire, etc. In the case of applying this coating at high thicknesses (more than 5 mm), the structures can be strong against the dynamic and static loads 37 . The remarkable and high ability of polyurea coatings to absorb energy compared to other similar construction industry coatings is a great advantage.…”

Section: Polyurea Coatings and Liningsmentioning

confidence: 99%

“…It can also reduce the deviation of the RC panels consisting of the polyurea coating, and it causes a significant reduction in the cracking in the concrete with polyurea coating. In this regard, Szafran and Matusiak 37 evaluated the resistance against the crushing in the reinforced concrete rings with polyurea coating. They performed a crushing strength test on these rings and discussed the failure mechanisms of the concrete specimens according to the application of polyurea coating.…”

Section: Polyurea Coatings and Liningsmentioning

confidence: 99%

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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%

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

“…In most cases, seismic failures in structures are triggered by their limited resilience owing to deficient component size, material properties, and lack of structural flexibility or ductility [3,4]. When subjected to earthquake loadings, brittle construction materials such as unreinforced concrete and unreinforced masonry (URM) do not display sufficient ductility [5,6]. As a result, engineers have identified retrofitting URM-based structures as a critical challenge that should be resolved.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Behavior of Masonry Shear Walls Retrofitted with Engineered Cementitious Composite and Pseudoelastic Shape Memory Alloy

Tabrizikahou

Kuczma

Łasecka-Plura

et al. 2022

Sensors

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The behavior of masonry shear walls reinforced with pseudoelastic Ni–Ti shape memory alloy (SMA) strips and engineered cementitious composite (ECC) sheets is the main focus of this paper. The walls were subjected to quasi-static cyclic in-plane loads and evaluated by using Abaqus. Eight cases of strengthening of masonry walls were investigated. Three masonry walls were strengthened with different thicknesses of ECC sheets using epoxy as adhesion, three walls were reinforced with different thicknesses of Ni–Ti strips in a cross form bonded to both the surfaces of the wall, and one was utilized as a reference wall without any reinforcing element. The final concept was a hybrid of strengthening methods in which the Ni–Ti strips were embedded in ECC sheets. The effect of mesh density on analytical outcomes is also discussed. A parameterized analysis was conducted to examine the influence of various variables such as the thickness of the Ni–Ti strips and that of ECC sheets. The results show that using the ECC sheet in combination with pseudoelastic Ni–Ti SMA strips enhances the energy absorption capacity and stiffness of masonry walls, demonstrating its efficacy as a reinforcing method.

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“…Polyurea and polyurethane–polyurea hybrids are usually used as a podium deck and foundation wall waterproofing. However, there are many more applications, such as roof coatings, pipe protection, secondary containers, bridge deck waterproofing, tank liners, automotive industry, pool coatings, and many more [ 5 , 6 , 7 ]. Thanks to continuous material development, the number of applications is growing.…”

Section: Introductionmentioning

confidence: 99%

Flame Retardancy Properties and Physicochemical Characteristics of Polyurea-Based Coatings Containing Flame Retardants Based on Aluminum Hydroxide, Resorcinol Bis(Diphenyl Phosphate), and Tris Chloropropyl Phosphate

Dukarski

Krzyz̈anowski²,

Gonsior³

et al. 2021

Materials

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Polyurea is a synthetic material made by the reaction of isocyanate and polymer blend-containing amines. Due to its outstanding mechanical properties and fast curing, polyurea-based coatings have found dozens of applications, including waterproofing and anti-corrosion coatings. Further development of this material can create a flame-retardant product, a good alternative for common products available on the market, such as intumescent coatings. To improve the flame retardancy of polyurea, several flame retardants were investigated. The influence of aluminum hydroxide, resorcinol bis(diphenyl phosphate) (RDP), and tris chloropropyl phosphate (TCPP) on flame retardancy and morphology was studied. The following methods were used: infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, limiting oxygen index, and tensile strength. The examinations mentioned above showed the improvement of flame-retardancy of polyurea for two products: chlorinated organophosphate and organophosphate. Nevertheless, using the chlorinated organophosphate additive caused a rapid deterioration of mechanical properties.

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Crushing strength of concrete rings with a polyurea reinforce system

Cited by 21 publications

References 23 publications

A review on the applications of polyurea in the construction industry

A review on the applications of polyurea in the construction industry

Cyclic Behavior of Masonry Shear Walls Retrofitted with Engineered Cementitious Composite and Pseudoelastic Shape Memory Alloy

Flame Retardancy Properties and Physicochemical Characteristics of Polyurea-Based Coatings Containing Flame Retardants Based on Aluminum Hydroxide, Resorcinol Bis(Diphenyl Phosphate), and Tris Chloropropyl Phosphate

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