Self-healing acceleration and interface optimization of steel deck pavement with MgO and SAP

Wu, Shuyin; Yang, Jun; Yang, Ruochong; Zhu, Jiang; Sun, Xu

doi:10.1016/j.conbuildmat.2020.121139

Cited by 15 publications

(2 citation statements)

References 28 publications

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“…The highest reduction in growth was observed with AA33M samples of SAP containing 0.03 g MgO particles. However, high MgO concentrations have proven to have a reducing impact on its swelling ability [31]. Figure 5 shows the inhibition of bacterial growth for each agar diffusion plate.…”

Section: Swelling In Ionic/saline Solutionmentioning

confidence: 99%

Antibacterial and swelling performance of superabsorbent polymers incorporated with magnesium oxide nanoparticles

Noor

Ahmad

Rafique

et al. 2023

Preprint

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Super absorbent copolymer incorporated with magnesium oxide nanoparticles was investigated for absorptivity in an aqueous solution and anti-bacterial activity against gram-negative Escherichia Coli. Cross-linked copolymers of ionic acrylic acid (A.A.) and nonionic acrylamide (AAm) were synthesized in an aqueous solution via free radical polymerization by providing vigorous mixing and heating. MgO nanoparticles were incorporated into the super-absorbent copolymers during polymerization. For all preparations, the degree of neutralization of acrylic acid was fixed at 75%, the amount of cross-linker NN-MBA was 1% moles of initial monomer, and the initiator potassium persulfate amount was 150 mg. The highest absorption of distilled water was 147 g/g at 80% acrylic acid without MgO nanoparticles content (AA30M). While in 0.9% saline solution, the highest absorption capacity was 39 g/g at 40% acrylamide content (AA10M). Reduced swelling ability was observed by increased magnesium oxide nanoparticles dosage as 121.5 g/g in AA33M copolymer. However, maximum bactericidal activity was observed for AA33M on the agar plate method and Lysogeny broth medium method via UV-spectrophotometer, where the optical density (O.D.) 600 was 0.022. This study is expected to provide a viable solution due to its eco-friendliness, ease of availability, and low cost.

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Section: Swelling In Ionic/saline Solutionmentioning

confidence: 99%

Antibacterial and swelling performance of superabsorbent polymers incorporated with magnesium oxide nanoparticles

Noor

Ahmad

Rafique

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Also, glass fiber-reinforced polymer-reinforced ECC link slabs enhanced the post-fatigue retention of the energy-absorbing capacity. Wu et al [66] used ECC as steel deck pavement, incorporating magnesia oxide (MgO) and superabsorbent polymer (SAP) to improve the self-healing and bonding properties. Utilization of MgO and SAP decreased the micro defects of the interface and enhanced the durability, self-healing, and bonding properties.…”

Section: Use Of Ecc As Pavement and Bridge Deckmentioning

confidence: 99%

Application of ECC as a Repair/Retrofit and Pavement/Bridge Deck Material for Sustainable Structures: A Review

2022

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Concrete structures cannot efficiently perform their functions over time due to chemical and physical external effects. Thus, enhancing the relationship between repair and aged structures, and also improving the durability properties of concrete is crucial in terms of sustainability. However, high costs, negative environmental effects, and incompatibility problems occur in repair/retrofit applications. Furthermore, three-quarters of the failures in the repaired/retrofitted structures are caused by a lack of repair durability. The need for repair in pavement/bridge decks is also frequently encountered, and early-age performance problems with repair materials cause pavement/bridge decks to be unavailable for certain periods of time. Engineered Cementitious Composite (ECC) can be effectively used as repair/retrofit and pavement/bridge deck material. It also has a minimal need for repair/retrofit thanks to its high durability properties. This article presents state-of-the-art research regarding the application of ECC as a repair/retrofit and pavement/bridge deck material. Studies in the literature show that the repair/retrofit properties of ECC outperform conventional concrete and steel fiber-reinforced concrete. ECC can be a solution to high early strength and drying shrinkage problems frequently encountered in the use of repair materials. It could also be used for different repair applications such as cast, sprayed, and trenchless rehabilitation. Moreover, ECC might fulfill specific requirements for pavement, pavement overlay, tunnel pavement, airfield pavement, and bridge deck. These superior performances are attributed to ECC’s kink-crack trapping mechanism, uniquely large inelastic strain capacity, strain hardening, high tensile strain capacity, and multiple microcracking and ductile behaviors, especially bonding behavior and self-healing.

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Quantitative evaluation on self-healing capacity of cracked concrete by water permeability test – A review

Hou

et al. 2022

Cement and Concrete Composites

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Self-healing acceleration and interface optimization of steel deck pavement with MgO and SAP

Cited by 15 publications

References 28 publications

Antibacterial and swelling performance of superabsorbent polymers incorporated with magnesium oxide nanoparticles

Antibacterial and swelling performance of superabsorbent polymers incorporated with magnesium oxide nanoparticles

Application of ECC as a Repair/Retrofit and Pavement/Bridge Deck Material for Sustainable Structures: A Review

Quantitative evaluation on self-healing capacity of cracked concrete by water permeability test – A review

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