Are surface scaling and internal damage of concrete under frost action caused by the same mechanism?

Zhendi Wang, Yading Xu, Ling Wang

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Frost action is the major threat against durability of concrete under cold region. Surface scaling and internal damage are the two main deterioration phenomenon caused by frost action. Nowadays, there is still a debate about whether surface scaling and internal damage caused by the same mechanism because of lacking direct experimental evidence. To prove that salt scaling is not analogous to internal damage, a rigid restraining ring is applied on concrete to simulate the real stress condition of concrete. Both relative dynamic modulus (RDM) and weight of surface scaling (SS) are recorded after every 4 cycles for both restraint specimens and free concrete. For the same mix proportion, the decrease of RDM of restraint specimens is less than that of free specimens, while the increase of SS of restraint specimens is higher than that of free specimens. The less decrease of RDM of restraint specimen is as expected due to the improvement of internal bond by rigid restraining ring. However the increment of SS of restraint specimens is more than that of free specimens prove that surface
scaling and internal damage of concrete under frost action are dominant by different mechanisms directly. It is recommended that the testing of frost resistance shall be conducted on concrete with steel restraining ring.
Original languageEnglish
Title of host publication4th International Conference on Service Life Design for Infrastructures
Subtitle of host publication(SLD4) 27-30 August 2018 – Delft, Netherlands
EditorsGuang Ye, Yong Yuan, Claudia Romero Rodriguez, Hongzhi Zhang, Branko Šavija
PublisherRilem
Pages54-58
ISBN (Electronic)978-2-35158-213-8
Publication statusPublished - 2018
Event4th International Conference on Service
Life Design for Infrastructures
- Delft, Netherlands
Duration: 27 Aug 201830 Aug 2018
Conference number: 4

Publication series

NameRilem proceedings
PublisherRilem
NumberPRO 125

Conference

Conference4th International Conference on Service
Life Design for Infrastructures
Abbreviated titleSLD4
CountryNetherlands
CityDelft
Period27/08/1830/08/18

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  • Cite this

    Wang, Z., Xu, Y., & Wang, L. (2018). Are surface scaling and internal damage of concrete under frost action caused by the same mechanism? In G. Ye, Y. Yuan, C. R. Rodriguez, H. Zhang, & B. Šavija (Eds.), 4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands (pp. 54-58). (Rilem proceedings; No. PRO 125). Rilem.