Study on the Deterioration Mechanism of Concrete Pavement for the Deicer-scaling
Li Jun1, 2, Gao Pei-Wei*, 1, Liu Hong-Wei1, 3
Identifiers and Pagination:Year: 2015
First Page: 61
Last Page: 65
Publisher Id: TOCIEJ-9-61
Article History:Received Date: 17/9/2014
Revision Received Date: 17/12/2014
Acceptance Date: 23/12/2014
Electronic publication date: 31/3/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The mechanical properties of concrete pavement were studied under the various frost-salt conditions using Capillary Suction of De-icing Chemicals and Freeze-thaw Test Method (CDF method). The test results show that: with the increasing of freeze-thaw cycles, concrete surface damage has a tendency to accelerate. The concrete which is in a 5% concentration chloride snow-thawing agent solution has the greatest impact damage after 150 frost-salt cycles compared with soaking in other different densities (3%, 20%). Mixing appropriate amount of silica fume and high-performance air-entraining agent in concrete can effectively improve the resistance of frost-salt scaling. With the frost-salt cycles increase, the concrete strength and the relative dynamic elastic modulus continues to decrease.