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Journal of Polymer & Composites Original Research Special issue Open Access

Service Life Prediction of Concretes Incorporated with Fly Ash and Alccofine with respect to Chloride Ion Penetration

  1. P. Sree Pavan Department of Civil Engineering, KLEF University
  2. Dr. B. Kameswara Rao Department of Civil Engineering, KLEF University
  3. Dharma Raj Upadhyaya Department of Civil Engineering, KLEF University

Abstract

Chloride-induced corrosion poses a significant threat to the degradation of reinforced concrete structures, especially in extreme environments such as marine and industrial exposure conditions, where the damage can be particularly severe. This study provides an experimental investigation utilizing three distinct water-binder ratios (0.3, 0.4, and 0.5) applied to three types of concrete mixtures: conventional concrete, concrete blended with 40% fly ash, and concrete blended with 40% fly ash and 2% alccofine as a replacement by weight of total cementitious materials. The primary objective is to assess the impact of these variations on critical performance indicators, including chloride ion penetration at various depths, surface chloride ion concentration, chloride diffusion coefficient, and compressive strength. By comparing specified properties across different concrete compositions, the study seeks to clarify the importance of these supplementary materials in mitigating chloride-induced corrosion. Particularly noteworthy is the evaluation of chloride ion penetration at various depths and the determination of surface chloride ion concentration and diffusion coefficient, contributing to an understanding of the performance of these concrete mixtures. The concrete incorporating fly ash and alccofine shows a good result in improving compressive strength and the resistance of chloride ion diffusivity for the water-to-binder ratio of 0.3.

Keywords

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