Enhancing concrete pavement performance using refuse derived fuel fly ash as a sustainable cementitious material
Source abstract
Abstract
The utilization of waste materials in concrete is becoming increasingly important for sustainability in construction. This research investigated the mechanical performance and environmental safety of concretes containing Refuse Derived Fuel fly ash (RDF FA), a waste product from waste incineration plants. The innovative mix design strategically used RDF FA as both cement replacement and cementitious addition in concrete. Compressive and flexural strength test results showed that RDF FA addition increased both compressive and flexural strengths, while RDF FA replacement decreased strengths (< 28 days cured) compared to those of traditional cement concrete. Microstructural and mineralogical analyses revealed dense C–S-H formation in RDF FA added samples, indicating improved hydration. In contrast, RDF FA replacement reduced cementitious products and hindered hydration. RDF FA’s high SiO2 content and favourable SiO2/CaO ratio enhanced pozzolanic reaction in RDF FA added samples, further improving strength development. Leaching test results demonstrated that heavy metal concentrations in RDF FA-modified concretes remained within environmental protection limits. Thus, with proper mix design, RDF FA has the potential to be a sustainable supplement for concrete, reducing industrial waste and natural resource use. This work provides an approach to balance enhanced concrete performance with environmental safety when using RDF FA.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Recycling and utilization of industrial and municipal waste in materials production · Concrete and Cement Materials Research · Radiation Shielding Materials Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Graduate Program in Civil Engineering and Construction Management, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Undergraduate Program in Civil and Infrastructure Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
The Royal Society of Thailand, Bangkok, Thailand
Institute of Research and Development, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, Australia
Funding
Suranaree University of Technology
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