Category Archives: International Journal of Engineering and Emerging Scientific Discovery VOLUME 9, NUMBER 1, 2024

  • March 22, 2025
  • 0

A Comparative Investigation into Some Engineering Properties of Soils from Two Selected Sites in Jos, Nigeria

Category : International Journal of Engineering and Emerging Scientific Discovery VOLUME 9, NUMBER 1, 2024

1Zakka, P.W., 2Dapia, Z.A., 1Agboju, S.E, 1Cyril, C.K., and 1Davou, P.J

ABSTRACT

The continues use of inappropriate construction methods on building substructures by some building contractors within Jos and its environs relatively to an assumption that “the soils within Jos are stable”, this assumption has led to many building contractors altering the balance between strength (stability/safety) and economy (cost) i.e.  given more priority to economy than strength by not undertaking detail site investigation on site and in the laboratory to know the bearing capacity and behaviour of the soils prior to execution of the project, this in-turn has resulted to many structural defects on buildings and other infrastructures within Jos and as well as building collapse in some part of the state. Consequently, a comparative investigation was carried out on some selected construction sites within the area under view in order to determine if actually the initial assumption was true about soils in Jos. The results obtained clearly show that there was a high degree of variation considering the strength characteristics and behaviour of soils within Jos.

Keywords: construction methods; strength; economy; site investigation; bearing capacity; variation.

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  • March 22, 2025
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The Effects of Sweet Potato Peel Ash and Egg Shell Powder as Partial Replacement of Cement in Concrete Production

Category : International Journal of Engineering and Emerging Scientific Discovery VOLUME 9, NUMBER 1, 2024

Akiniyi A.A., Gana A.J. and Oladunni Isaac Olasubomi

ABSTRACT

This study aimed at the possibility of using eggshell powder (ESP) and sweet potato peel ash (SPPA) in place of some of the conventional cement while making concrete. The search for substitutes for conventional cement that are more ecologically friendly is becoming more and more important as the market for sustainable building materials grows. The physical, mechanical, and durability characteristics of concrete mixtures including ESP and SPPA will be the main emphasis of this study. A comprehensive investigation was conducted to determine the present level of understanding on the utilization of agricultural waste products in concrete. The aim of this research was to compare the cost-effectiveness and availability of these wastes, as well as to examine the impact of these wastes on concrete and the characteristic strength of concrete that is made partially from egg shell powder and sweet potato peel ash instead of cement. The samples were then subjected to laboratory tests including the split tensile strength test, flexural strength test, compressive strength test, slump test, and X-ray fluorescence test. The influence of SPPA and ESP on the setting time and workability of the concrete mixtures was also examined. The SPPA and ESP were both divided into 1:1 ratio and evenly split into the concrete. They samples were all divided into different percentages of 0, 5, 10, 15 and 20%. Curing was also done for 7, 14, 28 and 56 days respectively for all the percentages of samples. According to the experiment, 20% replacement had the lowest compressive strength over the course of the entire curing age, while 5% replacement had the highest value at each curing age. In terms of cost, availability of these wastes, and mechanical strength, it would be profitable to use 5% of SPPA and ESP in lieu of cement. The results of this study may help develop sustainable building methods and provide a fresh approach to the advantageous application of agricultural byproducts in the building sector.

Keywords: Effect, Sweep Potato Peel Ash, Egg Shell Powder, Partial Replacement, Cement, Concrete Production

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  • March 22, 2025
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Pedestrians Analysis and Design for Taiwo Road Ilorin, Kwara State, Nigeria

Category : International Journal of Engineering and Emerging Scientific Discovery VOLUME 9, NUMBER 1, 2024

Braimoh O. S. & Gana A. J.

ABSTRACT

Designing for pedestrians is a research work carried out as a result of the inadequate availability of pedestrian facilities resulting to increased accidents and other environmental and human hazards resulting from intermodal competitions for spaces vis-à-vis Highway capacity. This has helped to consider the possibility of pedestrian facilities for transportation in Taiwo road. The presence of pedestrian in Taiwo road has been investigated and found to be 538 per hour. In this research, Pedestrian facilities were designed for the Ibrahim Taiwo road in Ilorin city which is 3900m distance (from Taiwo salee junction to the end of the road at General Hospital roundabout).The design was done by carrying out pedestrian count on the Sidewalk and Crosswalk for the road in two hours for three days. The Sidewalk designed is 2.0m while the distance between the crosswalk markings is 0.6m and the thickness of the zebra crossing line is 0.6mat 3800m, 3200m 2150m, 650m and 200m from the origin of the road with 3m width, the Island height is 0.15m, the height of the signs above the ground is 2.0m and the Bus shelters are located at 3800m and 650m from the origin. The use of pedestrian facilities is vital to the advancement and development of any locality. By placing emphasis on walking, the problem of acceptance will be over along the Ibrahim Taiwo road of Ilorin. It is recommended that the design of pedestrian facility should no longer be ignored in current transportation planning practices and in formulating, implementing and refining policies. In this light, Taiwo road should be marked with white lines for the sidewalk and other pedestrian facilities provided.

Keywords: Pedestrians, Analysis, Design, Taiwo Road Ilorin

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  • March 22, 2025
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Performance of Concrete made with River Stones and Crushed Stones as Coarse Aggregates within Okene (LGA), Kogi State, Nigeria

Category : International Journal of Engineering and Emerging Scientific Discovery VOLUME 9, NUMBER 1, 2024

Sadiq A.; Afolabi M. Suberu J. A

ABSTRACT 

It is a common practice within Okene local government area (LGA) in Kogi State, Nigeria to use river stones as construction materials to provide sustainability and growth in the State. A detail reports aimed at investigating the performance of concrete made with crushed stone and locally sourced river stone as coarse aggregates for concrete productions. The preliminary laboratory investigation was conducted to characterize the crushed stone and locally sourced river stone include the sieve test, physical properties, aggregate impact value and aggregate crushing value were within the required specifications to determine the sustainability of using coarse aggregates for construction work. A prescribed mix of 1:1.5:3 and 1:1:2, cement, fine and coarse aggregates respectively with water cement ratio of 0.55 was adopted. The constituents were mixed manually and cast into cubic mould size 150mm3 for the compressive strength while cylinder mould measuring 100mm diameter x 200mm long was used for split tensile strength. All the cube specimens were demoulded after 24hours and cured by immersing in water for maturity of 7, 14 and 28days respectively. It was observed that all the test results proved to have the required strength and also indicate that concrete produced with crushed stone has the maximum compacting factor and slump value. The optimum mean compressive strength and split tensile strength are 29.52N/mm2 and 3.88N/mm2 at designated mix for concrete made with crushed stone compared to river stone as 26.58N/mm2 and 3.08N/mm2 cured at 28days of testing respectively. The characteristics of the individual aggregate accounted for the variation in strength of the concrete. In conclusion, it’s advisable to use both mix ratios for structural elements and the effect of any types of coarse aggregate on the concrete strength will be identified and also enable consumers to determine the type of aggregate to be designated for a specific concrete production.

Keywords: characterization, coarse aggregates, strength, consistency test and physical properties.

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