Experimental Research on Natural Pozzolan as Cement Replacement
Article Sidebar
Main Article Content
Abstract
This paper presents the properties of mortar and concrete with NBRRI pozzolan as partial replacement of cement. In this research, NBRRI pozzolan from NBRRI and local cement (Dangote) are used. Firstly, chemical composition of NBRRI pozzolan and Dangote cement are analyzed. And then the physical properties of local materials used in this research are determined according to ASTM procedure. Partial replacement percentages of pozzolan are considered 10%, 20%, 30% and 40%. The strength of mortar and concrete with NBRRI pozzolan (0%, 10%, 20%, 30%, and 40%) is tested at 7 days, 14 days and 28 days. From the trial mix design, the water-cement ratio (0.555) is obtained by using the least square method. To get target strength (4000 psi), by using water-cement ratio (0.555) and 68% of maximum aggregate size (20 mm), the concrete mix proportion (1:1.9:3) is obtained. The compressive strength of concrete with various percentages of NBRRI pozzolan at 21 days and 28 days are more than 7 days and 14 days strength. Therefore, it can be concluded that NBRRI pozzolan can be used as cement
replacement material when high strength performance in structures is not required.
Downloads
Article Details
Authors hold the copyright of all published articles except otherwise stated.
References
Abdullahi, M. (2006). Characteristics of Wood Ash/OPC Concrete. Leonardo Electronic Journal of Practices Technologies, 8:9–16
ASTM, (1975). Annual Book of ASTM Standards.
Annune, J.E., Nwaofor, C., Shawon, M.C and Ahmed, Y.A (2020). Production and Characterization of Wood Ash Pozzolan of Melina and Cashew Tropical Woods. International Journal of Scientific & Engineering Research, 11(10): 735-742
Annune, J.E., Ocholi, M., Shawon, M.C and Ahmed, Y.A (2022). Investigating the chemical durability of concrete produced with pozzolanic additives. Journal of Emerging Technologies and Innovative Research (JETIR), 9(2): 354-360.
Danladi S.M. (2014). Road and Building Research in Nigeria: panacea to Nigeria’s Quest for Infrastructural Development. Nigerian Academy of Engineering
(NAE) 2014 Academy lecture-lagos, 2014.
Olawale, S. O., Murtadha A. T. and Olusegun O .A. (2018). The effect of cement-NBRRI pozzolanic material blend on the mechanical properties of glass fiber reinforced concrete. ABUAD Journal of Engineering Research and Development. 1(3): 371-379
U Nyi Hla Nge, (2008) “Essential of Concrete Inspection, Mix Designs and Quality Control”, Refresher Course for Engineers and Technicians, 1st Edition
Thwe Win, (2016), Experimental Research on Natural Pozzolan on Concrete Production