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Development and characterization of novel ultra-high performance concrete with superhydrophobic and self-luminescent propertiesAhmad Rizwan Mumtaz, 2024, doctoral dissertation
Abstract: This study explores the potential of using basalt reinforced UHPC by incorporating simulta- neously 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.
Keywords: UHPC, basalt fibers, mechanical properties, morphology, superhydrophobic, self-luminescence
Published in DKUM: 16.10.2024; Views: 0; Downloads: 14
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