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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/20754

Title: Application of sulphoaluminate cement to repair deteriorated concrete members in chloride ion rich environment-A basic experimental investigation of durability properties
Authors: Cai, Gaochuang
Zhao, Jun
Issue Date: 2016
Citation: KSCE Journal of Civil Engineering 20 (7), p. 2832-2841
Abstract: This paper presents a basic experimental investigation of the durability properties of Sulphoaluminate cement concrete (SACC) and Portland Cement Concrete (PCC). It is to discuss the potential application of Sulphoaluminate cement towards the repair of deteriorated concrete members in chloride ion-rich environment such as coastal engineering, using a SACC repair layer with higher strength than original damaged concrete. The chloride-related durability properties of SACCs were comprehensively studied through some experiments including concrete internal chloride ion content test, chloride ion migration test, X-ray diffraction analysis, scanning electron microscopy and pore structure analysis, when compared with the results of PCCs that have same mix proportion and curing conditions. The analyses and comparisons presented in this paper verified the SACC repair layer has high early strength and chloride-related durability which will effectively improve the capacity of damaged concrete to resist chloride ion penetration. When without any admixtures, compared with PCCs’ results, SACCs can provide more compactness hardened internal structures, more micro fillers between internal cracks and more favorable hydration products to bond/resist chloride ions, as well as can also provide lower porosity and more winding pore passageway to resist and postpone the transportation of chloride ion in the concretes. Based on the investigation, the chemical and physical mechanisms of SACC were discussed.
Notes: Zhao, J (reprint author), Zhengzhou Univ, Sch Mech & Engn Sci, Zhengzhou, Peoples R China. gaochuang.cai@uhasselt.be; zhaoj@zzu.edu.cn
URI: http://hdl.handle.net/1942/20754
DOI: 10.1007/s12205-016-0130-4
ISI #: 000385154900027
ISSN: 1226-7988
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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