• The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Resistance of High-Quality Concrete (HQC) to Chloride Ion Penetraion

Author(s): Tarun R. Naik, Frederick H. Gustin and Shiw S. Singh

Publication: Symposium Paper

Volume: 172


Appears on pages(s): 899-918

Keywords: air-entrainment; chlorides; compressive strength; concretes; cores; fly ash; silica fume

DOI: 10.14359/6169

Date: 12/1/1999

A research program was carried out to evaluate the chloride-ion penetration of both air and non-air entrained concretes made with mineral admixtures as partial replacements of cement. Two series of investigations (Series 1 and Series 2) were carried out. The mixtures were proportioned to have 28-day strengths of 35 MPa for Series 1 and 69 MPa for Series 2. Chloride-ion penetration was determined in accordance with ASTM C 1202. Series 1 mixtures contained a Class C fly ash whereas Series 2 mixtures contained the fly ash and silica fume. In general, all the concrete mixtures, with or without mineral admixtures, exhibited low values of chloride-ion penetration. In this work, a concrete containing 37% Class C fly ash showed results comparable to a concrete containing 11% Class C fly ash plus 8 % silica fume with respect to chloride-ion penetration. The chloride-ion penetration of high-quality concrete system was found to be unaffected when silica fume concentration was increased from 8 % to 11% .