Inhibition effect and mechanism of polyacrylamide for steel corrosion in simulated concrete pore solution

Zhi, Fangfang; Jiang, Linhua; Jin, Ming; Xu, Peng; Xiao, Beibei; Jiang, Quanguo; Chen, Lei; Gu, Yue

doi:10.1016/j.conbuildmat.2020.120425

Cited by 39 publications

(14 citation statements)

References 77 publications

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“…The C 1s spectra of the control and SRB systems were fitted by the curve of three peaks. The peaks at 284.8, 286.1, 288.1, and 289.1 eV are for C–S/C–H/C–C, C–N, CO, , which could be attributed to the adsorption of HPAM and SPS. The fitted N 1p high-resolution spectra are shown in Figure d.…”

Section: Resultsmentioning

confidence: 97%

“…33 The organic O peak at 531.8 eV was attributed to EPS secreted by SRB. 34 The fitted C 1s high- 30,36 which could be attributed to the adsorption of HPAM and SPS. The fitted N 1p high-resolution spectra are shown in Figure 5d.…”

Section: Analyses Of Surface Morphology and Contact Anglementioning

confidence: 93%

“…The N 1p spectra of the control and SRB systems were fitted by the curve of two peaks. The peak at 399.5 eV was attributed to NH 2 in the HPAM, 36 while the other one at 400.5 eV is due to C− N. 30 The fitted S 2p high-resolution spectra are shown in Figure 5e. The peaks at 167.9 and 168.5 eV were for SO 3 − Na + in the control or SRB medium.…”

Section: Analyses Of Surface Morphology and Contact Anglementioning

confidence: 99%

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Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

Zhang

Sun

et al. 2023

ACS Omega

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The corrosion behavior of sulfate-reducing bacteria (SRB) on 20# carbon steel in the NaCl alkali–surfactant–polymer (ASP) flooding system was studied by scanning electron microscopy, electrochemical measurement, X-ray photoelectron spectroscopy, and laser confocal microscopy. The results showed that the presence of SRB results in a large viscosity loss of the system. SRB can use hydrolyzed polyacrylamide (HPAM) as a nutrient to grow, and the number of SRB remained at a high level after 15 days. Weight loss and electrochemical tests indicated that SRB promoted corrosion of pipeline steel. The corrosion of carbon steel in the early stage of immersion was inhibited by the biofilm formed on the surface, and the thick biofilm in the later stage of immersion caused serious pitting corrosion. The localized corrosion caused by SRB was not inhibited by HPAM and sodium petroleum sulfonate (surfactant) adsorbed on the surface.

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Section: Resultsmentioning

confidence: 97%

Section: Analyses Of Surface Morphology and Contact Anglementioning

confidence: 93%

Section: Analyses Of Surface Morphology and Contact Anglementioning

confidence: 99%

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Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

Zhang

Sun

et al. 2023

ACS Omega

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“…To quantitatively analyze the anti-corrosion performance of MCIs on the reinforced concrete that underwent varying degrees of chloride erosion, the equivalent circuit model shown in Figure 4 was used to fit the Nyquist plots [ 24 , 25 ], and the fitted results are listed in Table 3 . In the equivalent circuit model in Figure 4 , R s denotes the resistance of the sodium chloride solution during chloride erosion, R f denotes the resistance of the protective MCIs-molecule film on the steel bar surface, and R ct denotes the charge transfer resistance.…”

Section: Resultsmentioning

confidence: 99%

Anti-Corrosion Performance of Migratory Corrosion Inhibitors on Reinforced Concrete Exposed to Varying Degrees of Chloride Erosion

Sun

Liu

et al. 2022

Materials

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This study investigated the anti-corrosion performance of commercial amino alcohol migratory corrosion inhibitors (MCIs) on concrete that underwent varying degrees of chloride erosion. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD), scanning electron microscopy, and energy dispersive spectroscopy (SEM-EDS) analyses were performed to study the anti-corrosion performance and mechanism of the MCIs on the steel bars. The results indicated that the corrosion resistance of the steel bars in concrete was significantly improved by coating with the MCIs, and the earlier the specimens were coated with the MCIs, the higher the anti-corrosion efficiency. The anti-corrosion efficiency was 55.35% when the MCIs coating was applied before chloride erosion; however, the anti-corrosion efficiency decreased to 3.40% when the MCIs coating was applied after the ninth drying–wetting cycle. The improvement in corrosion resistance of the steel bar in concrete coated with MCIs was due to the protective MCIs-molecule film that formed on the steel bar surfaces, and the oxidative dissolution of iron at the anode was effectively inhibited by the MCIs coating.

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“…In the civil engineering field, polyacrylamides are commonly utilized as the viscosity modifying admixtures [3][4][5]. It can improve the yield stress of the cementing material while reducing the deformation of the material due to its own weight, which is the key of additive manufacturing concrete.…”

Section: Introductionmentioning

confidence: 99%

Rheology and Thixotropy of Cement Pastes Containing Polyacrylamide

Su¹,

Jiang

et al. 2022

Geofluids

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In this article, the rheological and thixotropic properties of fresh cement pastes (fcps) with nonionic polyacrylamide (PAM) are investigated through the coaxial rotary method. The B-HB model is resorted to fit the shear stress versus shear rate diagram, from which the slurry plastic viscosity is particularly discussed. The results show that with the development of PAM, the plastic viscosity increases first, then decreases, and then increases again, exhibiting the “up-down-up” trend, which is consistent with the fcps fluidity. The adsorption, lubrication, and entanglement mechanisms of PAM are successfully used to interpret this phenomenon. Combined with the suspension density, the relationship among plastic viscosity, flowability, and density is successfully established follower via a multivariate linear regression method. The Durbin-Watson coefficient, variance inflation factor, μ significance, ρ significance, and R 2 are 2.122, 1.024, 0.014, 0.004, and 0.776, respectively, demonstrating the feasibility of fitting formula. Besides that, the PAM containing slurry which exhibits the explicit thixotropy is also found according to the appeared hysteresis curve during one shearing cycle. With the increase of PAM dosage, the thixotropic indexes including Th1 and Th2 decreased, until the PAM exceeded 0.5%-0.6% dosage, both of them yielded negative values. The phenomenon that the fcps final shear stress exceeds its initial value occurs.

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Inhibition effect and mechanism of polyacrylamide for steel corrosion in simulated concrete pore solution

Cited by 39 publications

References 77 publications

Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

Corrosion Behavior on 20# Pipeline Steel by Sulfate-Reducing Bacteria in Simulated NaCl Alkali/Surfactant/Polymer Produced Solution

Anti-Corrosion Performance of Migratory Corrosion Inhibitors on Reinforced Concrete Exposed to Varying Degrees of Chloride Erosion

Rheology and Thixotropy of Cement Pastes Containing Polyacrylamide

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