article · Open Ceramics
Geopolymer concrete made using fly ash and sugarcane bagasse ash offers an environmentally friendly alternative to traditional ordinary Portland cement. This research investigated the durability and mechanical characteristics of such geopolymer concrete, focusing on water absorption, performance under elevated temperatures up to 800 °C, and resistance to acid. Concrete specimens were subjected to heat at 200 °C, 400 °C, 600 °C, and 800 °C, as well as immersion in a three percent sulfuric acid solution for 28 days. Although compressive strength generally decreased as exposure temperatures rose from ambient levels to 800 °C, the rate of strength loss slowed between ambient conditions and 200 °C. When immersed in sulfuric acid, the geopolymer concrete retained significantly higher strength, losing only 13 to 21 percent of its compressive strength, whereas ordinary Portland cement concrete lost 51 percent under the same acidic conditions.
Conventional cement manufacturing produces significant carbon emissions, driving demand for sustainable binders created from agricultural and industrial waste. Demonstrating that geopolymer concrete blending fly ash and sugarcane bagasse ash resists high temperatures and outperforms ordinary cement in acidic environments supports the development of more durable, environmentally friendly building materials for demanding industrial contexts.
The findings indicate potential applications in industrial environments requiring high chemical resistance, such as wastewater infrastructure or chemical processing facilities. Potential users include concrete manufacturers and industrial construction contractors looking to replace ordinary cement with agricultural and industrial byproduct binders. Because the abstract details only laboratory-scale material testing and durability assessments under controlled thermal and acidic conditions, the technology remains at an early testing stage prior to field validation.
AI-generated from the published abstract. Always read the original work before citing.
Geopolymer or alkali-activated binders are being recognized as an eco-friendly, sustainable substitute for ordinary Portland cement (OPC). The development of high-performance concrete with improved durability and mechanical properties and the addition of environmentally friendly components is a continuous effort. Therefore, the current work examines the durability of fly ash-sugarcane bagasse ash mechanical characteristics in terms of water absorption, exposure to elevated temperatures, and acid resistance. The mechanical properties of the geopolymer concrete (GPC) and OPC concrete specimens were evaluated after being subjected to elevated temperatures of 200 °C, 400 °C, 600 °C, and 800 °C. The acid resistance was determined by submerging the concrete specimens in 3 % sulfuric acid (H 2 SO 4 ). The acid resistance of the specimens was evaluated through visual inspection, weight variation, and the percentage loss in compressive strength (C R ). According to the study, C R typically drops as temperature increases from ambient temperature to 800 °C. However, the rate of decline reduced as temperature increased from ambient temperature to 200 °C. Moreover, the GPC specimens showed a strength loss between 13 % and 21 % following 28 days of sulfuric acid immersion. In contrast, exposure to sulfuric acid caused a 51 % drop in strength for the OPC concrete samples.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1016/j.oceram.2024.100687
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
