Kwara State University
Rasheed Abdulwahab
Designation: Lecturer 1
Department: Civil and Environmental Engineering
| My Publications | ||||||||
|---|---|---|---|---|---|---|---|---|
| S/N | Title | Abstract | Authors | Volume Numbers | Publication Type | Publication Date | Link | |
| 1 | Application of Accelerated Carbonation and Water Curing for Development of Superplasticed Self Compacting Concrete |
The growing shortage of raw materials coupled with the vital requirement to shield the ecosystem from pollution has heightened the need to develop novel construction materials from agricultural wastes. Therefore, the goal of this work was to determine the properties of GCHA blended Self Compacting Concrete (SCC) using Accelerated Carbonation Curing (ACC) and water curing methods. Portland limestone cement, Guinea Corn Husk Ash (GCHA), sand, water and granite dust were tested for fineness, coarseness, specific gravity before being used to produce the concrete samples. The concrete was also investigated for its flowability parameters. Also, Scanning Electronic Microscopy (SEM), Energy Dispersive X-Ray Fluorescence Spectrometer (EDXRF, X-Ray Diffraction (XRD) were carried out to determine the properties of the GCHA. The mix ratios for the selfcompacting concrete were developed and optimized to obtain an optimal compressive strength. The optimum combinations of percentage of GCHA and cement in ACC that gave a compressive strength of 21.369 N/mm 2 in 56 days are 25 % and 412.5 kg/m3 respectively. The flowability properties such as slump flow T50 was obtained at 5 seconds, slump flow was 690 mm, Lbox was 0.88mm and V-funnel was 6 seconds for ACC. The optimum combinations of percentage of GCHA and cement in WC that gave a compressive strength of 19.6274 N/mm2 in 56 days are 25 % and 412.5 kg/m3 respectively. The flowability properties such as slump flow T50 was obtained at 6 seconds, slump flow was 700 mm, L-box was 0.81mm and Vfunnel was 5 seconds for WC. Therefore, the optimal combinations for ACC and WC can be used in reinforced concrete production | (1) Odeyemi, S.O, Amoo, A. I., Abdulwahab, R., Adedeji, A.A | 19 (2) | Journal | 2022-05-12 | ||