Investigation on nano-modified phostocatalytic ultra-smooth concrete

How far the concrete can be used as finishing material depends on how smooth and functional it can be. In this work an ultra smooth surfaced photocatalytic concrete is fabricated with a method taking use of the nano granular nature of the main hydration product of cement Calcium Silicate Hydrate (C-...

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Bibliographic Details
Main Authors: Shen Weigo, Shi, Hua, Shui Zhonghe, Wang, Guiming, Zhang Wengsheng
Format: Conference Proceeding
Language:English
Subjects:
Calcium silicate hydrate
Calcium silicates
Concrete
Construction materials
Photocatalysis
Photodegradation
Titanium dioxide
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Summary:How far the concrete can be used as finishing material depends on how smooth and functional it can be. In this work an ultra smooth surfaced photocatalytic concrete is fabricated with a method taking use of the nano granular nature of the main hydration product of cement Calcium Silicate Hydrate (C-S-H) and the photocatalysis of nano TiO2. The surface of this concrete is covered with nano particles of Calcium Silicate Hydrates (C-S-H) sized around several 10 nm when characterized by FSEM and AFM, the nano TiO2 covers on the surface of the concrete also . The roughness of the concrete surface is arond 10 nm when quantified with AFM in a scanning area of 1.0×1.0μm2, ultra smooth surfaced photocatalytic concrete can degrade MB blue obviously. Due to its ultra smooth and photocatalytic, this concrete is promising to be a new self cleaning finishing material for the modern building.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4849311