Durability of concrete made with different chemical admixtures under marine splash environment

T. U. Mohammed, H. Hamada, T. Yamaji

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

4 Citations (Scopus)

Abstract

A detailed investigation on the concrete specimens made with different chemical admixtures was carried out after 10 years of exposure in the marine splash environment. Chemical admixtures include air-entraining admixture (vinsol), water-reducing admix-ture (lingosulfonate group), various high-range water-reducing and air-entraining admixtures (naphthalene, melamine, polycarboxyl and amino-sulfonate group), and drying shrinkage reducing admixture (glycol ether plus amino alcohol derivatives). The specimens were tested for carbonation depths, chloride ingress, oxygen permeability, electrochemical and physical evaluations of corrosion of steel bars in concrete, porosity and mineralogy of the mortar portion, and SEM (Scanning Electron Microscopy) investigation of steel-concrete interface. Naphthalene group of high-range water-reducing and air-entraining chemical admixture shows relatively better performance with respect to the strength development and chloride ion ingress in concrete. The use of shrinkage reducing admixture shows no harmful effect after 10 years of exposure. The specially adopted method of casting concrete used in this study causes a formation of good steel-concrete interface that prevents the initiation of corrosion even for water soluble chloride concentration around 1.5% of cement mass.

Original languageEnglish
Title of host publication7th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
EditorsV.M. Malhotra
PublisherAmerican Concrete Institute
Pages17-36
Number of pages20
ISBN (Electronic)9780870311277
Publication statusPublished - Sep 1 2003
Externally publishedYes
Event2003 7th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete - Berlin, Germany
Duration: Oct 20 2003Oct 23 2003

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-217
ISSN (Print)0193-2527

Conference

Conference2003 7th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
Country/TerritoryGermany
CityBerlin
Period10/20/0310/23/03

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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