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Influence of nano silica on the fresh, hardened and durability properties of self-cleaning white Portland cement mortars

Title
Influence of nano silica on the fresh, hardened and durability properties of self-cleaning white Portland cement mortars
Author
김홍기
Keywords
Nano silica; Nano titanium dioxide; White Portland cement mortars; Mechanical properties; Self-cleaning; Photocatalysis; durability; Chloride penetration; Carbonation
Issue Date
2019-06
Publisher
KOREAN ASSOC CRYSTAL GROWTH
Citation
JOURNAL OF CERAMIC PROCESSING RESEARCH, v. 20, NO 3, Page. 270-275
Abstract
In this study, nano titanium dioxide and nano silica have been added in white Portland cement mortars. The dosage of nano-TiO2 was fixed to 3% while the dosage of nano-SiO2 was varied from 0%-3%. Water/binder ratio was 0.45% and binder/sand ratio was 1:3. The workability, water absorption, compressive and flexural strengths of mortars was measured. The permeability of mortars was measured using Nordest test and the carbonation resistance was measured in a carbonation chamber. The degradation of rhodamine B dye on the surface of mortars was measured after exposure of the white mortars to the ultraviolet light. Addition of nano-SiO2 increased the compressive and flexural strengths of mortars, reduced the water absorption of mortars and resisted the penetration of chloride ions. The self-cleaning of the white mortars was unaffected by the addition of nano-SiO2 particles.
URI
http://jcpr.kbs-lab.co.kr/file/JCPR_vol.20_2019/JCPR20-3/10.S2018-193_270-275.pdfhttps://repository.hanyang.ac.kr/handle/20.500.11754/111134
ISSN
1229-9162
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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