Quantification of Variability in Pond Ash Concrete and Its Effect on the Seismic Safety Performance of Reinforced Concrete Buildings

Amrin, Ayesha; Debasree; Dhir, Prateek Kumar; Sahoo, Kirti Kanta

Abstract

In this study, an attempt was made to use pond ash (PA), which is an industrial waste generated in power plants, as a replacement for fine aggregates (FA) in concrete. An experimental program was conducted on the mechanical properties (compressive strength, split-tensile strength, and flexural strength) of pond ash concrete. Five concrete mixes with varying proportions of pond ash replacing fine aggregates were designed to cast a total of 450 concrete samples. Thirty-two [two-parameter (2P), three-parameter (3P), and four-parameter (4P)] probability distributions were taken into consideration, and the statistical goodness-of-fit (GOF) tests Kolmogorov-Smirnov (KS), Kolmogorov-Smirnov-Lilliefors (KSL), Anderson Darling (AD), and chi-squared (CS) were carried out. The peak values for compressive strength, split-tensile strength, and flexural strength were observed at 20% replacement of FA by the PA. Based on the GOF test ranks, the most suitable probability distribution for modeling variations in compressive strength was the Cauchy distribution (2P). Similarly, Johnson-SB (4P), and Gumbel-Min (2P) were found to be the best distribution for the split-tensile strength and flexural strength, respectively. With an increase of pond ash substitution from 0% to 20%, there is a decrease in the probability of failure, and a further increase in FA substitution causes a decrease in concrete strength, which led to an increase in the probability of failure as shown by the fragility analysis.

Citation

Amrin, A., Debasree, Dhir, P. K., & Sahoo, K. K. (2024). Quantification of Variability in Pond Ash Concrete and Its Effect on the Seismic Safety Performance of Reinforced Concrete Buildings. Journal of Materials in Civil Engineering, 36(2), Article 04023542. https://doi.org/10.1061/jmcee7.mteng-16576

• Journal Article Type: Article
• Acceptance Date: Jul 3, 2023
• Online Publication Date: Nov 17, 2023
• Publication Date: 2024-02
• Deposit Date: Mar 12, 2024
• Journal: Journal of Materials in Civil Engineering
• Print ISSN: 0899-1561
• Electronic ISSN: 1943-5533
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 36
• Issue: 2
• Article Number: 04023542
• DOI: https://doi.org/10.1061/jmcee7.mteng-16576
• Keywords: Mechanics of Materials; General Materials Science; Building and Construction; Civil and Structural Engineering
• Public URL: https://durham-repository.worktribe.com/output/2289998