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Information Journal Paper

Title

Comparative Evaluation of Effect of Fly Ash a nd Microsilica on the Development of Compressive Strength and Electrical Resistance of Concretes Exposed to Sulfate-Rich Waters

Pages

  122-139

Abstract

 Reinforced Concrete is one of the most widely used building materials in the construction industry. The sulfate attack on Concrete Structure/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Concrete Structures is one of the factors effectively causing the reduced Concrete/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Durability of Concrete and structural damage. In the design and construction of Concrete Structure/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Concrete Structures, service life, sustainable development, and environmental issues are important indicators considered by researchers in optimizing materials to achieve sustainable Concrete with high strength by substituting various types of pozzolans for cement. The present study aims to compare the effects of Fly Ash and micro-silica on the development of the compressive strength, and electrical resistance of Concretes exposed to sulfate-rich waters by performing experiments. The plans of this study include two types of conventional Concretes and Concretes containing pozzolanic material. Concrete mixing plans in Sulfate Medium were divided into 11 groups. The first group, with no additive material, included one plan (control plan), and the other 10 groupsincluded 8 plans with the substitution of different percentages of micro-silica and Fly Ash powders for cement in Concrete. Accordingly, 81 plans, each with 4 samples (7, 14, 28, and 42-day ages), were constructed to test compressive strength (N=324 plans). The results indicate that in the Sulfate Medium, with an optimal mixing design, the Concrete containing standard sand reinforced with Fly Ash and Microsilica pozzolans had higher compressive strength compared to the Concrete with no pozzolan so that Samples # 5 and 6 of Group 2, with a 7. 2% reduction in compressive strength, and Samples #30 and 31, with a 28% reduction in compressive strength, had the highest and lowest compressive strength, respectively. Also, the substitution of 15% Microsilica caused a 1. 58-fold increase in the electrical resistance in the 90 day-old Concrete sample compared to the 28 day-old sample.

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    APA: Copy

    Babaei, Yaghoub, Mousavi Ghasemi, Seyyed Arash, & Zandi, Yousef. (2023). Comparative Evaluation of Effect of Fly Ash a nd Microsilica on the Development of Compressive Strength and Electrical Resistance of Concretes Exposed to Sulfate-Rich Waters. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 9(11 ), 122-139. SID. https://sid.ir/paper/1033789/en

    Vancouver: Copy

    Babaei Yaghoub, Mousavi Ghasemi Seyyed Arash, Zandi Yousef. Comparative Evaluation of Effect of Fly Ash a nd Microsilica on the Development of Compressive Strength and Electrical Resistance of Concretes Exposed to Sulfate-Rich Waters. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2023;9(11 ):122-139. Available from: https://sid.ir/paper/1033789/en

    IEEE: Copy

    Yaghoub Babaei, Seyyed Arash Mousavi Ghasemi, and Yousef Zandi, “Comparative Evaluation of Effect of Fly Ash a nd Microsilica on the Development of Compressive Strength and Electrical Resistance of Concretes Exposed to Sulfate-Rich Waters,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 9, no. 11 , pp. 122–139, 2023, [Online]. Available: https://sid.ir/paper/1033789/en

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