Mechanically stable superhydrophobic surface on cement-based materials

Shen, Cong; Zhu, Yanqing; Shi, Weina; He, Kun; Xiao, Xiudi; Xu, Xueqing; Shi, Jifu; Xu, Gang

doi:10.1016/j.chemphys.2020.110912

Cited by 25 publications

(8 citation statements)

References 28 publications

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“…[ 33 ] The Si—O bond that connects concrete and PMHS is presumably formed by the dehydration reaction of siloxanes and −OH on the concrete. [ 34 ]…”

Section: Resultsmentioning

confidence: 99%

Biomimetic Superhydrophobic Concrete with Enhanced Anticorrosive, Freeze Thaw, and Deicing Resistance

et al. 2021

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A green superhydrophobic hybridization concept that incorporates biomimetics (lotus effect), chemistry (siloxane and silane admixtures), and nanotechnology (hydrophobic coating with SiO2 nanoparticles) is used to produce superhydrophobic concrete. The fabricated samples exhibit superior hydrophobicity, contact angles (CA) up to 157.6° ± 3.1°, and roll‐off angles (RO) of 6.5° ± 1.5°, even under high surface mechanical abrasion. The superhydrophobic samples can decrease freeze‐thaw damage and maintain high freeze‐thaw resistance effectively. The modified surfaces exhibit 6 times lower deicing strength compared with the reference surfaces. Furthermore, the high water repellency helps to prevent corrosive liquids from encountering the concrete reinforcement samples and helps to improve the corrosion resistance of steel bars. These unique key properties and self‐cleaning capability make superhydrophobic concrete relevant for a wide range of commercial and practical engineering applications in construction, bridges, and transportation.

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“…[ 33 ] The Si—O bond that connects concrete and PMHS is presumably formed by the dehydration reaction of siloxanes and −OH on the concrete. [ 34 ]…”

Section: Resultsmentioning

confidence: 99%

Biomimetic Superhydrophobic Concrete with Enhanced Anticorrosive, Freeze Thaw, and Deicing Resistance

et al. 2021

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“…One method to prevent bacterial adhesion is changing the material surface characteristics [28]. The literature has suggested different methods for modifying the hydrophobicity of different types of materials, such as chemical change of hardened cement pastes (HCP) [73], mortar [53], low-density polyethylene (LDPE) [74], thermal change (termorretification) of plywood [61] and the addition of metal particles on plastics [56,57].…”

Section: Influence Of Sfe On Bacterial Colonizationmentioning

confidence: 99%

Interaction between Biofilm Formation, Surface Material and Cleanability Considering Different Materials Used in Pig Facilities—An Overview

et al. 2021

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Sometimes the contamination in pig facilities can persist even after the washing and disinfection procedure. Some factors could influence this persistence, such as bacteria type, biofilm formation, material type and washing parameters. Therefore, this review summarizes how the type of surface can influence bacteria colonization and how the washing procedure can impact sanitary aspects, considering the different materials used in pig facilities. Studies have shown that biofilm formation on the surface of different materials is a complex system influenced by environmental conditions and the characteristics of each material’s surface and group of bacteria. These parameters, along with the washing parameters, are the main factors having an impact on the removal or persistence of biofilm in pig facilities even after the cleaning and disinfection processes. Some options are available for proper removal of biofilms, such as chemical treatments (i.e., detergent application), the use of hot water (which is indicated for some materials) and a longer washing time.

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“…[83,84] At present, SHPB materials have been applied in the anti-icing field of architecture engineering. [85][86][87][88][89][90][91][92][93] Concrete is a very commonly used material in architecture engineering. The anti-icing property can expand the applications of concrete in low-temperature environments.…”

Section: Anti-icingmentioning

confidence: 99%

“…[ 83,84 ] At present, SHPB materials have been applied in the anti‐icing field of architecture engineering. [ 85–93 ]…”

Section: Applications In Architectural Engineeringmentioning

confidence: 99%

“…This was due to the synergistic effect of the air layer formed by the superhydrophobicity and the low dielectric constant polyvinyl alcohol fiber, which minimized the mirror charge on the ice, thereby weakening the adhesion of ice. Shen et al [ 87 ] fabricated SHPB surfaces on hardened cement pastes by using the rough structures of cement hydration products and modifying the cement pastes with perfluorodecyl triethoxysilane during the cement curing process. The ice adhesion strength of SHPB hardened cement paste was much smaller than that of the ordinary hardened cement paste after freezing for 12 h. Ice accumulation tests showed that only a few ice beads adhered to the SHPB hardened cement paste compared to the thick ice layer on the ordinary hardened cement paste.…”

Section: Applications In Architectural Engineeringmentioning

confidence: 99%

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A Review on Applications of Superhydrophobic Materials in Civil Engineering

Wang

Qing

2021

Adv Eng Mater

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Superhydrophobic (SHPB) materials have attracted a lot of attention in civil engineering due to their unique wettability in recent years. The SHPB characteristics pave up a new way for the applications of SHPB materials in civil engineering. In this review, the applications research progress of SHPB materials in various fields of civil engineering is summarized. The waterproofing, self‐cleaning, anticorrosion, anti‐icing, and antifogging applications of SHPB materials in architectural engineering are discussed. The applications of SHPB materials in road and bridge engineering such as anti‐icing and antiskidding are listed. The applications of SHPB materials in heating and ventilation engineering are ranged from anticondensation, antifrosting to dust removal. The anticorrosion and antibiofouling applications of SHPB materials in structural engineering in marine environment are presented. The key problem of insufficient mechanical and chemical durability of SHPB materials when applied in civil engineering is pointed out, and the application trend of SHPB materials in civil engineering is prospected. Finally, based on the detailed discussion of the applications of SHPB materials in civil engineering, a brief summary is proposed. It is expected that SHPB materials can be widely and systematically applied in civil engineering, making important contributions to multifunctional development of civil engineering in the future.

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Mechanically stable superhydrophobic surface on cement-based materials

Cited by 25 publications

References 28 publications

Biomimetic Superhydrophobic Concrete with Enhanced Anticorrosive, Freeze Thaw, and Deicing Resistance

Biomimetic Superhydrophobic Concrete with Enhanced Anticorrosive, Freeze Thaw, and Deicing Resistance

Interaction between Biofilm Formation, Surface Material and Cleanability Considering Different Materials Used in Pig Facilities—An Overview

A Review on Applications of Superhydrophobic Materials in Civil Engineering

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