Influence of nanoclay on concrete subjected to freeze-thaw cycles and bond behavior between rebar and concrete

Yingfang Fan, Shiyi Zhang, Surendra P. Shah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This paper explores the effects of nano-kaolinite clay (NKC) on the behavior of cement-based materials concrete. The resistance of NKC modified cement-based materials to freezing-thaw cycles and the corrosion processes of rebar embedded in the concrete were investigated. Ordinary Portland cement was partially substituted with NKC in ratios of 0%, 1%, 3%, and 5% by weight. The Rapid Freeze-Thaw Cabinet was used to measure the resistance of ordinary Portland cement concrete and concrete with clay to deterioration caused by repeated cycles of freezing and thawing, compressive strength were measured at regular intervals. The corrosion conditions of the rebar embedded in the concrete were studied by an electrochemical accelerated penetration system, pullout tests were performed to assess the bond properties including bond-slip curve, ultimate bond strength between concrete and rebar before and after corrosion. It is revealed that the introduction of NKC improves the freeze-thaw resistivity values and bond behavior in the concrete specimens compared to the control concrete; the corrosion of the rebar embedded in the concrete is impeded efficiently.

Original languageEnglish (US)
Title of host publicationConcrete under Severe Conditions - Environment and Loading
EditorsMatteo Colombo, Marco di Prisco
PublisherTrans Tech Publications Ltd
Pages256-262
Number of pages7
ISBN (Print)9783035710441
DOIs
StatePublished - Jan 1 2016
Event8th International Conference on Concrete under Severe Conditions - Environment and Loading, CONSEC 2016 - Lecco, Italy
Duration: Sep 12 2016Sep 14 2016

Publication series

NameKey Engineering Materials
Volume711
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other8th International Conference on Concrete under Severe Conditions - Environment and Loading, CONSEC 2016
CountryItaly
CityLecco
Period9/12/169/14/16

Keywords

  • Acid rain
  • Bond strength
  • Freeze-thaw
  • Nano-kaolinite clay

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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