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Surface impregnated concrete: a comparative study

Author(s): N. Ukrainczyk
Paper category: Workshop
Book title: RILEM International workshop on performance-based specification and control of concrete durability
Editor(s): D. Bjegović, H. Beushausen, M. Serdar
ISBN: 978-2-35158-135-3
e-ISBN: 978-2-35158-136-0
Pages: 217 - 224
Total Pages: 8
Language: English

This contribution reports the results of a comparative study on surface impregnations for concrete using three different commercial products: silane, siloxane and styren-butadien latex (SBR). On treated and untreated concrete specimens the following tests were conducted: porosity, chloride ion penetration, capillary water absorption, gas permeability, abrasion resistance, and depth of polymer impregnation.
All types of surface treatments resulted in significant improvements of most of the measured durability parameters. Amount of water soluble chloride ions in the concrete surface layer was reduced: 53 % for SBR, 63 % for siloxane, and 67 % for silane. Capillary water absorption coefficient was reduced even 34 times for silane, eight times for siloxane, while two times for SBR. Gas permeability reduction exhibited opposite trends: 30 % for SBR, and 15 % for silane and siloxane. Abrasion resistance was improved only by SBR treatment. It was concluded that the protection type should be chosen based on the concrete performance specification as well as their environmental impact (i.e. toxicity). The method of impregnating the concrete by SBR dispersion was used in repair of concrete bridge overlays and reinforced concrete structures exposed to chloride ion penetration and abrasion.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00

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