Akshay Dhawan,
Manvendra Verma,
- PhD Scholar, Department of Civil Engineering, GLA University, Mathura, Uttar Pradesh, India
- Assistant Professor, Department of Civil Engineering, GLA University, Mathura, Uttar Pradesh, India
Abstract
The main problems with durable concrete constructions are attacks by sulphates and chlorides on concrete. The primary objective of this study is to evaluate how the strength properties of concrete are affected by the incorporation of fly ash when exposed to environmental conditions involving sulphate and chloride solutions. In this research, geopolymer concrete (GPC) is utilized as a replacement for conventional ordinary Portland cement (OPC). The concrete composition is prepared with geopolymer varies. Samples are demolded and then submerged in water for a full 28 days to cure. Following this, the samples are placed in different solutions of 10% sodium chloride (NaCl) and 10% sodium sulphate (Na2SO4) for hardening times at 28, 56, and 90 days respectively. A degree of damage, variation in compressive strength, and weight change were used to assess the impacts of sulphate and chloride on the concretes. After 90 days, the exposure of fly ash to concrete significantly improved its compressive strength at 33.11% as compared to the strength of 10% NaCl solution, water and OPC, respectively. In contrast to the OPC, the 10% NaCl solution decreased the compressive strength of fly ash-containing GPC after 90 days of exposure. In comparison to other models, the maximum ultrasonic pulse velocity of GPC-7 was attained at 4430 m/s. The minimal charge cleared in the GPC-7 fast chloride permeability test is 1045 coulombs. According to this study, adding fly ash to concrete as an additional cementitious material may help lessen the harmful impacts of sulphate and chloride salts. The study’s findings suggest that adding ground fly ash to concrete as an additional cementitious element strengthens the material’s durability to harsh environments.
Keywords: Geopolymer concrete; chemical analysis; compressive strength; sodium sulphate and chloride; ordinary portland cement.
[This article belongs to Journal of Polymer and Composites ]
Akshay Dhawan, Manvendra Verma. Durability Assessment of Geopolymer and OPC Concretes under Chloride and Sulphate Chemical Attack. Journal of Polymer and Composites. 2025; 13(05):202-218.
Akshay Dhawan, Manvendra Verma. Durability Assessment of Geopolymer and OPC Concretes under Chloride and Sulphate Chemical Attack. Journal of Polymer and Composites. 2025; 13(05):202-218. Available from: https://journals.stmjournals.com/jopc/article=2025/view=225110
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Journal of Polymer & Composites
| Volume | 13 |
| Issue | 05 |
| Received | 04/08/2025 |
| Accepted | 11/08/2025 |
| Published | 21/08/2025 |
| Publication Time | 17 Days |
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