Next Article in Journal
Study of a Particle Based Films Cure Process by High-Frequency Eddy Current Spectroscopy
Next Article in Special Issue
On the Durability and Wear Resistance of Transparent Superhydrophobic Coatings
Previous Article in Journal
Local Electrical Response in Alkaline-Doped Electrodeposited CuInSe2/Cu Films
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Coatings 2017, 7(1), 1; doi:10.3390/coatings7010001

Weathering of Two Anti-Graffiti Protective Coatings on Concrete Paving Slabs

1
School of Geography and the Environment, University of Oxford, South Parks Road, OX1 3QY, Oxford, UK
2
Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Mariateresa Lettieri
Received: 12 November 2016 / Revised: 10 December 2016 / Accepted: 13 December 2016 / Published: 22 December 2016
(This article belongs to the Special Issue Anti-Graffiti Coatings)
View Full-Text   |   Download PDF [4286 KB, uploaded 22 December 2016]   |  

Abstract

The durability of anti-graffiti coatings is of special relevance since, unlike other protective treatments, they are not only affected by environmental factors, but also by often aggressive cleaning procedures. However, little is known about the long-term performance of either permanent or sacrificial coatings. This study explores the durability of two commercial coatings on concrete paving slabs under both natural and artificial ageing tests. The results of this research show that a fluorinated polyurethane and a crystalline micro wax weathered in less than 2000 h in a chamber with UVB radiation and after one year of outdoor exposure in the south of England. The former weathered by getting yellow and dark, and eventually, only under the accelerated ageing test, by losing its adhesion to the concrete slabs, and the latter weathered by getting dark, cracked and by reducing its water repellency under natural conditions. Cleaning efficiency of the protected surfaces from graffiti paints was therefore diminished, particularly when pressurized water spray was used on the polyurethane coated surfaces, since the treatment was partially removed and the concrete surface eroded. View Full-Text
Keywords: anti-graffiti; wax; fluorinated polyurethane; concrete; QUV; weathering; durability; coating; outdoor exposure; accelerated ageing anti-graffiti; wax; fluorinated polyurethane; concrete; QUV; weathering; durability; coating; outdoor exposure; accelerated ageing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Carmona-Quiroga, P.M.; Jacobs, R.M.J.; Viles, H.A. Weathering of Two Anti-Graffiti Protective Coatings on Concrete Paving Slabs. Coatings 2017, 7, 1.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top