Protection of concrete with water repellent agents: What is required to achieve a sufficient penetration depth
2009 (English)In: Concrete Repair, Rehabilitation and Retrofitting II: Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR, 2009, 287-288 p.Conference paper (Refereed)
Water repellent agents such as silanes have been shown to give a good protection against moisture and chlorides and thereby prolonging the service life for the construction. However, a requirement for a successful impregnation is a sufficient penetration depth. The effective penetration depth of different silanes was measured by cracking water repellent treated concrete plates, spraying water on the cracked surface and measuring the distance from surface to the sharp line between dry and wet concrete. The results are presented as a function of three parameters: time, degree of saturation and porosity. They show how these factors affect the effective penetration depth of the silane. It can be seen that by prolonging the treatment from one to five hours results in doubling the penetration depth something which easily can be achieved for example by using a paste instead of a liquid.
Place, publisher, year, edition, pages
2009. 287-288 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-78735ISBN: 978-041546850-3OAI: oai:DiVA.org:kth-78735DiVA: diva2:492829
2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2008; Cape Town; 24 November 2008 through 26 November 2008
QC 201202082012-02-082012-02-082012-02-08Bibliographically approved