ABSTRACT: The environmental concerns linked to ordinary Portland cement have increased the demand for alternative binder systems that utilize locally available resources efficiently and still provide adequate performance. This study investigates the potential of rice husk ash (RHA) and calcined clay (CC) as supplementary pozzolanic materials in lime-based binders. The objective was to comparatively evaluate the influence of these materials on physicochemical properties, reactivity, and mechanical performance and to establish relationships between these parameters. RHA and CC were produced under controlled calcination conditions and characterized using chemical, mineralogical......
Keywords: Rice husk ash, calcined clay, lime-based binders, pozzolanic reactivity, compressive strength, electrical conductivity
[1].
G. Boshoff, J. Duncan, And P. D. Rose, “Tannery Effluent As A Carbon Source For Biological Sulphate Reduction,” Water Research, Vol. 38, No. 11, Pp. 2651–2658, 2004.
[2].
N. F. Musyimi, J. Karanja, M. Wachira, And M. Mulwa, “Pozzolanicity And Compressive Strength Performance Of Kibwezi Bricks Based Cement,” Iosr Journal Of Applied Chemistry (Iosr-Jac, Vol. 9, No. 2, Pp. 28–32, 2016.
[3].
K. L. Scrivener, V. M. John, And E. M. Gartner, “Eco-Efficient Cements: Potential Economically Viable Solutions For A Low-Co₂ Cement-Based Materials Industry,” Cement And Concrete Research, Vol. 114, Pp. 2–26, 2018.
[4].
L. Mirzaei, T. Ghebrab, And C. B. Fedler, “Review And Evaluation Of Agricultural Biomass Ashes As Supplementary Cementitious Materials For Sustainable Concrete,” Processes, Vol. 13, No. 11, P. 3571, 2025.
[5].
I. G. Amadi And J. Mahachi, “Towards Sustainable Concrete: Current Trends And Future Projections Of Supplementary Cementitious Materials In South Africa,” Construction Materials, Vol. 5, No. 3, P. 70, 2025.