Fabrication of all-dimensional superhydrophobic mortar with enhanced waterproof ability and freeze-thaw resistance

Wang, Wei; Wang, Shanlin; Yao, Daozhou; Wang, Xikui; Yu, Xinquan; Zhang, Youfa

doi:10.1016/j.conbuildmat.2019.117626

Cited by 55 publications

(13 citation statements)

References 41 publications

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“…[44] Giving concrete with waterproofing property can make it more durable and suitable for intelligent architectural engineering. [45][46][47][48][49] Foamed concrete is widely used in building thermal insulation due to its excellent thermal insulation properties. [46,47] Due to its high water absorption rate, water easily penetrates into it to increase its thermal conductivity and reduce its thermal insulation.…”

Section: Waterproofingmentioning

confidence: 99%

“…The hydrophilicity of cement‐based composites made them susceptible to water, thus reducing their durability and limiting their practical applications. Wang et al [ 48 ] prepared SHPB mortar blocks by dissolving modified cement and sands in polyvinyl alcohol surfactant solution. The block exhibited superhydrophobicity inside after being crushed or scraped off the surface layer.…”

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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Section: Waterproofingmentioning

confidence: 99%

Section: Applications In Architectural Engineeringmentioning

confidence: 99%

A Review on Applications of Superhydrophobic Materials in Civil Engineering

Wang

Qing

2021

Adv Eng Mater

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“…There is always a growing demand for impermeable concrete for building hydraulic structures, such as channels and dams, and for water containment generally [1,2]: the more impermeable the concrete, the more durable the structure. Although it may not be enough to prevent degradation in chemically aggressive environments [3][4][5][6][7], using impermeable concrete can reduce the degradation rate, and the associated maintenance costs and energy consumption. According to the norms and standards, a concrete structure is designed taking into consideration its nominal service life (which depends on the type of structure and environmental factors) and specifying an appropriate level of concrete permeability [8].…”

Section: Introductionmentioning

confidence: 99%

Porosity of a Fast-Setting Mortar with Crystallization Admixture and Effect of a SA-PA Modification

et al. 2022

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Air permeability measurements according to the Hagen–Poiseuille equation, Scanning Electron Microscopy (SEM) and mercury intrusion porosimetry (MIP) tests were conducted on samples of cementitious mortar at different curing times to study the correlation between the increased crystallization and their microstructure. The mortar samples were prepared with a commercial fast-setting premix containing calcium silicates and quartz. The average permeability coefficient (K) was 2.96 × 10−15 m2 after 3 days and decreased to 3.07 × 10−17 m2 after about one month. The continuous C-S-H nucleation in the capillary pores of the cement mortar changes their shape and improves the mortar’s impermeability. The SEM images showed the development of crystals that refine the pore size distribution of the cement paste, with more of the smallest pores, and fewer of the largest, as demonstrated by the MIP measurements. Adding a superabsorbent polyacrylate (SA-PA) in the amount of 0.5% wt of dry powder, without adding any extra water, makes a mortar less fluid but not faster-setting. Twenty-four hours after mixing and casting, it is still plastic and, with time, the pore size distribution differs from that of standard mortar. Over time in air, permeability remains high, but in water it could be low due to swelling of SA-PA residues.

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“…Inspired by the lotus leaf, superhydrophobic materials with water contact angles greater than 1501 and roll-off angles less than 101 are widely used in various fields, given their waterrepellent and self-cleaning abilities. [21][22][23][24][25] An intelligent combination of a micro-nano structure and low surface energy is necessary to achieve these special surfaces. The low surface adhesion toward a wide range of liquids, including water and other polar material, allows for their easy removal without leaving any residue.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic catalyst-wrapped fibrofelt with anti-moisture, anti-dusting and NH₃-SCR properties

et al. 2022

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Fabrication of all-dimensional superhydrophobic mortar with enhanced waterproof ability and freeze-thaw resistance

Cited by 55 publications

References 41 publications

A Review on Applications of Superhydrophobic Materials in Civil Engineering

A Review on Applications of Superhydrophobic Materials in Civil Engineering

Porosity of a Fast-Setting Mortar with Crystallization Admixture and Effect of a SA-PA Modification

Superhydrophobic catalyst-wrapped fibrofelt with anti-moisture, anti-dusting and NH₃-SCR properties

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Fabrication of all-dimensional superhydrophobic mortar with enhanced waterproof ability and freeze-thaw resistance

Cited by 55 publications

References 41 publications

A Review on Applications of Superhydrophobic Materials in Civil Engineering

A Review on Applications of Superhydrophobic Materials in Civil Engineering

Porosity of a Fast-Setting Mortar with Crystallization Admixture and Effect of a SA-PA Modification

Superhydrophobic catalyst-wrapped fibrofelt with anti-moisture, anti-dusting and NH3-SCR properties

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Product

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Superhydrophobic catalyst-wrapped fibrofelt with anti-moisture, anti-dusting and NH₃-SCR properties