Compressive strength and statistical investigation of concrete made with bituminous sand

Ezenkwa, Chidiebere Sampson and Onwuka, David Ogbonna and Okere, Chinenye. E. and Arimanwa, Joan I. and Onwuka, Sylvia Ulari (2025) Compressive strength and statistical investigation of concrete made with bituminous sand. International Journal of Science and Research Archive, 14 (3). pp. 417-429. ISSN 2582-8185

Africa is urgently in need of adequate basic infrastructure and housing, and it is one of the continents where massive construction activities are on the rise. There is a vast variety of potentially viable resources for sustainable construction on the continent, and the continent can bring these local resources effectively into practice. This paper reports the results of an experimental study of the compressive strength and statistical analysis of plain concrete made using bituminous sand. Open excavation was used to obtain bituminous sand, which was then crushed with a scoop to sand sizes. 42 specimens underwent casting and testing. The slump test was used to assess the concrete's fresh properties. After the samples were cured for 7, 14, 21, 28, 56, 90, and 150 days, respectively, the concrete strength test was conducted. The findings were statistically analysed using the Excel spreadsheet regression analysis tool (ESRA) and the statistical package and service solution (SPSS). According to the findings, bituminous sand concrete has a better workability/placeability compared to the control. Additionally, the tests demonstrate that samples' compressive strengths rose as curing age increased, albeit at varying rates, with the control concrete achieving the highest strength. Accordingly, bituminous sand concrete may be used for concrete constructions that need grade C15 concrete, according to the trial results. After testing, it was determined that the developed models were sufficient.