Design and performance optimization of self-cleaning coating on decorative UHPC surface

Yuan, Quan; Shi, Chuang; He, Tingshu

doi:10.1016/j.conbuildmat.2023.132115

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…There are more micro-to nano-scale voids on the surface of biomimetic samples, which can intercept air and greatly reduce the contact area between the surface and the water droplets. A large amount of air is entrapped in the of micro-and nano-scaled structures under the combined action of imprinted convex structures and cross-linked SiO2 nanoparticles [33]. This behavior aligns with the structure described by the Cassie-Baxter model that exhibits superhydrophobicity, a self-cleaning effect, and prevents water penetration into the matrix of the samples [44].…”

Section: Surface Morphology and Roughnesssupporting

confidence: 69%

“…UHPC is characterized by dense particle packing and a low water-cement ratio, as outlined in Section 3.1. Consequently, to achieve water repellency, there is no need for internal hydrophobic additives in the concrete mix [33]. After the curing of the concrete into a rigid mass (for approximately 1 day), the meshes were removed, and the samples underwent additional curing for 28 days according to standards SIST EN 12390-1 [34] and SIST EN 12390-2 [35].…”

Section: Designmentioning

confidence: 99%

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Novel Ultra-High-Performance Concrete (UHPC) Enhanced by Superhydrophobic and Self-Luminescent Features

Mumtaz,

Bede Odorčić,

Garro

et al. 2024

Sustainability

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This study explores the potential of using basalt reinforced UHPC by incorporating simultaneously self-cleaning and self-luminescent features, paving the way for sustainable advancements in civil engineering. New green formulations of UHPC were developed by integrating supplementary cementitious materials and optimizing water to the binder ratio, followed by using basalt fibers to enhance strength and ductility. The fabricated samples with high particle-packing density exhibit sufficient workability and compressive strength up to 136 MPa, and, when incorporating basalt fibers, a notable reduction in brittleness. The inner microstructure of basalt fibers was observed to be smooth, homogeneously distributed, and well adhered to the UHPC matrix. To ensure the desired long-lasting visual appearance of decorative UHPC and reduce future maintenance costs, a time-effective strategy for creating a light-emitting biomimetic surface design was introduced. The samples exhibit high surface roughness, characterized by micro to nano-scale voids, displaying superhydrophobicity with contact angles reaching up to 155.45°. This is accompanied by roll-off angles decreasing to 7.1°, highlighting their self-cleaning features. The self-luminescence feature showcased intense initial light emission, offering a potential energy-efficient nighttime lighting solution.

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Section: Surface Morphology and Roughnesssupporting

confidence: 69%

Section: Designmentioning

confidence: 99%