Improving Resistance of High Strength Concrete (HSC) Bridge Beams to Frost and Defrosting Salt Attack by Application of Hydrophobic Agent

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F17%3A00320520" target="_blank" >RIV/68407700:21610/17:00320520 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1757-899X/236/1/012053" target="_blank" >http://dx.doi.org/10.1088/1757-899X/236/1/012053</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/236/1/012053" target="_blank" >10.1088/1757-899X/236/1/012053</a>

Result language
angličtina
Original language name
Improving Resistance of High Strength Concrete (HSC) Bridge Beams to Frost and Defrosting Salt Attack by Application of Hydrophobic Agent
Original language description
HSC (High Strength Concrete) is increasingly used for bearing bridge structures nowadays. Bridge structures in the Czech Republic are exposed to severe conditions in winter time and durability of the concrete is therefore a crucial requirement. The high strength and low water absorption of HSC suggests that the material will have high durability. However, the situation may not be so straightforward. We carried out a study of the very poor durability of HSC concrete C70/85 used to produce prestresed beams 37.1 m in length to build a 6-span highway bridge. After the beams were cast, a production control test indicated some problems with the durability of the concrete. There was a danger that 42 of the beams would not be suitable for use. All participants in the bridge project finally decided, after extensive discussions, to attempt to improve the durability of the concrete by applying a hydrophobic agent. Paper will present the results of comparative tests of four hydrophobic agents in order to choose one for real application and describes this application on construction site.
Czech name
—
Czech description
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Project
<a href="/en/project/GA15-10591S" target="_blank" >GA15-10591S: Impact of long-term environmental conditions on the hydrophobic properties of the surface layers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Building up Efficient and Sustainable Transport Infrastructure 2017 (BESTInfra2017)
ISBN
—
ISSN
1757-8981
e-ISSN
1757-899X
Number of pages
8
Pages from-to
422-429
Publisher name
IOP Publishing Ltd
Place of publication
Bristol
Event location
Praha
Event date
Sep 20, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000417428700053

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