Chloride ion penetration of high strength high performance concrete

Author

Jeenu, G. ; Vinod, P. ; Mangal, L.

Author_Institution

Dept. of Civil Eng., Coll. of Eng., Trivandrum, India

fYear

2012

fDate

18-20 Dec. 2012

Firstpage

124

Lastpage

129

Abstract

High strength high performance concrete (HPC) represents an important technological innovation which promises to unleash the full potential of the raw materials to produce an ecological concrete for the construction industry. This paper focusses on the chloride ion permeability of HPC mixes with strength greater than 75 N/mm². The influence of mineral and chemical admixtures on the strength development and chloride ion permeability of high strength HPC is also studied. The investigated mixes were proportioned with aggregates designed for maximum density, using packing density method. The results indicate that unique combinations of micro silica and superplasticiser exist for HPC mixes with negligible to very low chloride ion permeability. Equation for predicting 6 hour conductivity from 1 hour conductivity is also proposed.

Keywords

aggregates (materials); concrete; construction industry; durability; electrical conductivity; ions; mechanical strength; mixtures; permeability; raw materials; aggregate design; chemical admixtures; chloride ion penetration; chloride ion permeability; conductivity; construction industry; ecological concrete; high-strength HPC mixes; high-strength high-performance concrete; maximum density; microsilica; mineral; packing density method; raw materials; superplasticiser; technological innovation; time 1 hour; time 6 hour; Aggregates; Concrete; Conductivity; Correlation; Permeability; Silicon compounds; Chloride ion permeability; Durability; HPC; RCPT;

fLanguage

English

Publisher

ieee

Conference_Titel

Green Technologies (ICGT), 2012 International Conference on

Conference_Location

Trivandrum

Print_ISBN

978-1-4673-2635-3

Type

conf

DOI

10.1109/ICGT.2012.6477959

Filename

6477959