Effect of polyethylene glycol on chloride binding in mortar

Zhao, Lixiao; Pan, Feng; Ye, Shaoxiong; Liu, Xin; Wang, Haochuan

doi:10.1016/j.conbuildmat.2021.125321

Cited by 12 publications

(5 citation statements)

References 54 publications

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“…PEG also decreases the cement matrix's ability to attach with chloride, affecting its binding capacity early in the chloride erosion process. 164 Zhao et al explored the use of VMAs in cement-based products to improve dispersion and reduce concrete's reliance on chloride penetration, thereby increasing its long-term durability. The addition of VMA to mortar reduces its chloride diffusion coefficient, with samples containing 5% PEG showing a 30.00% lower diffusion coefficient after 28 days compared with the control group.…”

Section: Chloride Attack Resistancementioning

confidence: 99%

“…The study revealed that the addition of PEG improves the grout's potential to bind chloride, due to the development of hydrogen links between PEG and chloride ions. PEG also decreases the cement matrix's ability to attach with chloride, affecting its binding capacity early in the chloride erosion process 164 . Zhao et al explored the use of VMAs in cement‐based products to improve dispersion and reduce concrete's reliance on chloride penetration, thereby increasing its long‐term durability.…”

Section: Wsp's Effect On Cementitious Composites' Durability Possessionsmentioning

confidence: 99%

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Review of advanced cementitious composites using water soluble polymer based admixture

Nitin,

Chaudhary,

Yeshpal

2024

J of Applied Polymer Sci

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This paper offers a thorough unfolding of the many contributions that water‐soluble polymers (WSPs) play in cementitious composites. The several forms of WSPs—natural, semi‐synthetic, and artificial—are examined, and their methods of action in cementitious composites are investigated. The topics of binding, association, adhesion, complexation, and bridge creation are covered in the literature. The effects of WSPs on the microstructure, freshness, mechanical properties, and durability of cement‐based goods are also investigated in this review. The advantages and disadvantages of utilizing WSPs in cement‐based products are also discussed. Following a detailed analysis of the most significant findings, recommendations are made for both academic and practical research areas and applications. This study provides useful information for both experts and novices by elucidating the multi‐applications of WSPs in cementitious materials.

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Section: Chloride Attack Resistancementioning

confidence: 99%

Section: Wsp's Effect On Cementitious Composites' Durability Possessionsmentioning

confidence: 99%

Review of advanced cementitious composites using water soluble polymer based admixture

Nitin,

Chaudhary,

Yeshpal

2024

J of Applied Polymer Sci

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“…The potentiometric titration method with good reproducibility and high accuracy was selected in this paper, and then the chloride content was calculated according to the Chinese standard (MOHURD 2013). It should be noted that total chloride is defined as the chloride dissolved in the nitric acid solution, while free chloride is defined as the chloride dissolved in deionized water (Zhao et al 2021). The experimental instrument used was the Shanghai Leici Model ZDJ-5B-D automatic potentiometric titrator.…”

Section: Measurement Of Chloride Content Of Concretementioning

confidence: 99%

The Effect of SCMs on the Resistance of Steam-cured Concrete to Chloride Attack in the Tidal Zone of Real Marine Environment

Han,

Zhao,

Sun

et al. 2024

ACT

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Steam curing is a widely used technique for producing precast concrete components in practical engineering. Chloride attack is a main factor that leads to the corrosion of rebars in concrete structures, which significantly affects the durability and safety of concrete structures in marine environments. In this paper, XRD, LF-NMR, 29 Si NMR, and 27 Al NMR were used to investigate the microstructure evolution of steam-cured concrete and standard-cured concrete. Then, the steamcured and standard-cured concrete were subjected to actual marine exposure tests to explore the microstructure evolution of concrete and the chloride erosion behavior in the tidal zone. The results showed that steam-curing can increase the average molecular chain length (MCL) and polymerization degree of C-(A)-S-H, promote the transformation of siliconoxygen tetrahedral dimer to polymer, and increase the Q 2 /Q 1 value of steam-cured concrete to twice that of standard-cured concrete. Compared to standard-cured specimens, steam-cured concrete specimens had significantly more harmful pores and multi-harmful pores. With the increase of exposure time to the marine environment, the depth of the convection zone inside the concrete did not change significantly, however, the peak value of chloride concentration increased gradually. The addition of SCMs to steam-cured concrete reduced the content of free and total chloride, which was well explained by microscopic tests. The concentration of chloride on the surface and chloride diffusion coefficient of steam-cured concrete showed a quadratic function relationship with the increase of slag content, and an exponential decay relationship with the content of fly ash.

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“…It boosted rebar corrosion saturation. Variables affecting RCPT include compressive strength, mineral admixtures, aggregates, curing methods (normal, autoclaving, steam), specimen temperature, pore size, regional environmental conditions, test conditions [25,52]. Adding a healing agent to concrete enhanced chloride ion resistance by 14%, 36%, and 46% for 1D, 2D, and 3D samples, respectively, compared to the reference sample.…”

Section: Rapid Chloride Penetration Resistancementioning

confidence: 99%

“…Furthermore, hydrated calcium aluminates were found in fractures, resulting in the closure of fissures up to 110 mm wide [24]. Polyethylene glycol (PEG) enhances concrete self-curing, shrinkage, and durability by increasing pore solution viscosity, limiting chloride corrosion, and reducing particle size and durability [25].…”

Section: Introductionmentioning

confidence: 99%

Integration of FDM and self-healing technology: evaluation of crack sealing by durability and mechanical strength

Hameed,

Othman,

Abdul-Hamead

2023

Mater. Res. Express

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The tensile zone of concrete is prone to cracking due to its limited ability to withstand tension. To address this issue, steel reinforcement is used in these specific regions. The occurrence of little cracks might potentially facilitate the ingress of liquids and gases into the reinforcing material, hence inducing corrosion. Self-healing concrete can repair and seal minuscule cracks, thus impeding the formation of corrosion. This study investigates the potential application of fused deposition modelling (FDM) for generating novel vascular networks and tubes using polylactic acid (PLA) as the material. Poly (lactic acid) (PLA) was fabricated using three-dimensional (3D) printing techniques, and its properties were compared to those of one-dimensional (1D) and two-dimensional (2D) networks. The external diameter measured 5.6 mm, while the internal diameter measured 4 mm. utilized a 10 ml volume to apply healing agents, specifically organic polyethylene glycol liquid and nano-powder (fly ash) derived from recycled materials, to all vascular structures (1D, 2D, and 3D). This application was carried out using a planetary ball mill. Following this, the prepared tubes were incorporated into a concrete beam to introduce self-healing capabilities. The water-to-cement ratio (W/C) utilized for all concrete mixtures was 0.6%, while the definite mixture proportions were 1:2.16:2.98. The quantification of the self-healing phenomenon was conducted by evaluating the restoration of load-carrying capacity following the application of a repaired specimen to a four-point bending test. Furthermore, these enhancements resulted in improved durability, increased compressive strength, and enhanced other physical characteristics. The pipes that are manufactured can be utilized to produce innovative concrete that possesses the ability to undergo self-healing processes, making it well-suited for various self-healing applications.

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Effect of polyethylene glycol on chloride binding in mortar

Cited by 12 publications

References 54 publications

Review of advanced cementitious composites using water soluble polymer based admixture

Review of advanced cementitious composites using water soluble polymer based admixture

The Effect of SCMs on the Resistance of Steam-cured Concrete to Chloride Attack in the Tidal Zone of Real Marine Environment

Integration of FDM and self-healing technology: evaluation of crack sealing by durability and mechanical strength

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