Preparation and evaluation of a new anti-corrosive coating based on asphalt cement blended with polyesteramide resin for steel protection

El‐Wahab, H. Abd; Saleh, A.M.M.; Wassel, Magdy A.; Elkady, Gamal M.; Khalaf, Nidal; Ahmed, Said El-Seayd Ahmed El-Didamony

doi:10.1016/j.porgcoat.2013.04.010

Cited by 14 publications

(7 citation statements)

References 16 publications

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“…Nanoemulsion terpolymers which have very small particles and used as an asphalt modifier are introduced into asphalt mixtures through HMA, WMA or CIR. Many properties of polymers such as process ability, electrical properties, chemical, thermal, mechanical and environmental stability, affect their suitability and reliability as protective organic coatings (Abd El-Wahab et al , 2013). Recently, modified reclaimed asphalt by using styrene – butyl acrylate nanoemulsion copolymer was prepared and evaluated.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Naser

Wahab

El‐Fattah

et al. 2019

PRT

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Purpose -Investigate the best methods of utilisation of reclaimed asphalt pavements (RAP) in Egypt, in order to determine the effect of using 100% RAP instead of using virgin aggregates and asphalt. Investigate the effect of thermoplastic elastomer polymer as asphalt modifier. Also, improve the mechanical and physical characteristics and consequently improving the quality of asphalt paving, increasing the service life of asphalt-paving and reducing costs.Design/methodology/approach -Nano acrylate terpolymers were prepared with different % (wt.) of and were characterised by Fourier Transforms Infrared (FTIR), for molecular weight (Mw), by Thermo Gravimetric Analysis (TGA) and by Transmission Electron Microscopy (TEM). A 4% (wt.) of the prepared nanoemulsion terpolymer was mixed with virgin asphalt as a polymer modifier, to improve and reuse of the Reclaimed Asphalt Pavement (RAP). The modified binder was tested. The tests conducted include penetration, kinematic viscosity, softening point and specific gravity. Application of Marshall mix design types; Hot Mix Asphalt (HMA), Warm Mix Asphalt (WMA) and Cold in place Recycled (CIR). Four different mix designs used; control mix contained virgin asphalt by HMA, and the other three mix designs were PMA by HMA, WMA and CIR.Findings -The research results showed that using 4 wt. % of the prepared nanoemulsion terpolymer to produce hot mix asphalt (HMA) and warm mix asphalt (WMA) achieved higher stability compared to the control mix and cold in place recycled (CIR).Research limitations/implications -This paper discusses the preparation and the characterisation of nanoemulsion and its application in reclaimed asphalt pavements in order to enhance and improve the RAP quality.Practical implications -Nano-acrylate terpolymer can be used as a new polymer to modify asphalt to achieve the required specifications for reclaimed asphalt pavements (RAP).Originality/value -According to the most recent surveys, Europe produced 265 tonnes of asphalt for road applications in 2014, while the amount of available Reclaimed Asphalt Pavement (RAP) was more than 50 tonnes. The use of RAP in new blended mixes reduces the need of neat asphalt, making RAP recycling economically attractive.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Naser

Wahab

El‐Fattah

et al. 2019

PRT

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“…Nanoemulsion copolymers which have very small particles and used as an asphalt modifier are introduced into asphalt mixtures through HMA, WMA or CIR. Many properties of polymers such as process ability, electrical properties, chemical, thermal, mechanical and environmental stability, affect their suitability and reliability as protective organic coatings [12]. Compatibility between polymer and asphalt should be high enough to avoid separation phase.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of modified reclaimed asphalt by using styrene – butyl acrylate nanoemulsion copolymer

Naser

El‐Wahab²,

El‐Fattah

et al. 2018

Egypt. J. Chem.

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RECLAIMED Asphalt Pavement (RAP) is beneficial because it provides and decreases the cost of the construction, while increasing environmental sustainability. The main purpose of this study is to investigate the best practice of RAP in Egypt, in order to determine the effect of using 100% RAP instead of using virgin aggregates and asphalt. The study also investigates the effect of thermoplastic elastomers polymer as asphalt modifier. Also, improve the mechanical and physical characteristics and hence improving the quality of asphalt paving, increase asphalt-paving age and reduce the cost.Nano acrylate copolymer has been prepared with different wt.% and was tested for Fourier Transforms Infrared (FTIR), Molecular Weight (Mwt), Thermo Gravimetric Analysis (TGA) and Transmission Electron Microscopy (TEM). A 4wt.% of the prepared nanoemulsion copolymer was mixed with virgin asphalt as a polymer modifier, to improve and reuse of the RAP. The modified binder was tested. The tests conducted include penetration, kinematic viscosity, softening point and specific gravity. Application of Marshall mix design types; Hot Mix Asphalt (HMA), Warm Mix Asphalt (WMA) and Cold in place Recycled (CIR). Four different mix designs were used; control mix contains virgin asphalt by HMA, where the other three mix designs were Polymer Modified Asphalt (PMA) by HMA, WMA and CIR. The research results showed that, using 4 wt.% of the prepared nanoemulsion copolymer producing HMA and WMA with higher stability compared to the control mix and CIR. Keywords

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“…The ethoxyline resin is considered to be a promising material due to their excellent mechanical properties and chemical resistance, easy crosslinking and curing to make film strong compactness, high adhesion [3][4][5][6][7]. The research of H. Abd El-Wahab et al [8] showed that a certain amount of polyamide can short the curing time of epoxy asphalt coating and the water resistance of coatings was also improved. Wang et al [9] suggested that waterborne epoxy resin coatings were obtained dispersing nano-SiO 2 into the single epoxy compound in the process of self curing agent, then in situ polymerization and grafting modification.…”

Section: Introductionmentioning

confidence: 99%

Corrosive Behavior Study of Q235 Steel Coated with Epoxy Composites in Substation Environment

Li¹,

Jin²,

Chen³

et al. 2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

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Abstract. In this work, the epoxy composite coating composited by zinc rich epoxy primer and silver epoxy enamel, was sprayed on the surface of Q235 steel. The anticorrosion of as-prepared samples in substation environment with atmospheric exposure for 18 months, and in 5% NaCl aqueous solution for 250 days were evaluated and compared, respectively. Electrochemical impedance spectroscopy (EIS) was employed to analyze the corrosive behavior of epoxy composite coating in 5% NaCl aqueous solution, the weather resistance and salt resistance were also evaluated. Additionally, the structure changes of epoxy composite coating induced by salt immersion and atmospheric exposure were characterized by fourier transform infrared (FT-IR). The results are demonstrated that the epoxy composite coating is corroded to be invalid after immersed into 5% NaCl aqueous solution for 250 days, which the impedance decreases from 3.967×10 9 ·cm 2 to 9.780×10 2 ·cm 2 . The mechanism of corrosion is proposed that the corrosive medium gradually penetrate into the composite coating to form micro electric circuit through micro pores, resulting in the increase of porosity and corrosive rate for the composite coating. However, the impedance of epoxy composite coating in substation environment for 18 months is still 2.708×10 6 ·cm 2 , indicating the good corrosion resistance.

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Preparation and evaluation of a new anti-corrosive coating based on asphalt cement blended with polyesteramide resin for steel protection

Cited by 14 publications

References 16 publications

Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Preparation and characterization of modified reclaimed asphalt by using styrene – butyl acrylate nanoemulsion copolymer

Corrosive Behavior Study of Q235 Steel Coated with Epoxy Composites in Substation Environment

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