Journal Articles http://repository.fuoye.edu.ng:80/handle/123456789/62 2026-04-16T08:38:10Z 2026-04-16T08:38:10Z Falade, Funso Ikponmwosa, Efe Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1106 2015-10-11T15:43:08Z 2013-01-01T00:00:00Z

Title: Low-Cost Construction Through The Use Of Pulverized Bone Foamed Aerated Concrete (PB-FAC) Authors: Falade, Funso; Ikponmwosa, Efe; Fapohunda, Christopher Abstract: Provision of affordable housing especially for low-income earners, which forms the majority of the population, continues to be elusive in the nations of world. The major reason given for this is the high cost of building and construction materials. Concrete and concrete products constitute the major building construction materials. However, cement which is the main binder in concrete production has been identified as the major contributor to increasing high cost of construction. This paper presents the results of investigation conducted to assess the structural suitability and adequacy, as well as affordability of using pulverized bone as partial replacement of cement in the production of foamed aerated concrete (PB-FAC) for low-cost building and construction purposes using Nigeria as a case study. The parameters investigated, in accordance with relevant standards, are: workability, density, compressive strength, tensile strength, and water absorption capacity. Cost comparison with equivalent concrete of equal strength was also carried out. The results showed adequate strength and water absorption capacity, as well as cost reduction of up to 36% at 20% cement replacement with pulverized bone. It is concluded that the use of pulverized bone foamed aerated concrete (PB-FAC) can be used as a strong and affordable building and construction material.

2013-01-01T00:00:00Z Falade, Funso Ikponmwosa, Efe Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1105 2015-10-11T15:38:01Z 2013-01-01T00:00:00Z

Title: Environmental Benefits of the Structural Use of Pulverised Bone in the Production of Foamed Aerated Concrete Authors: Falade, Funso; Ikponmwosa, Efe; Fapohunda, Christopher Abstract: Disposal of wastes resulting from myriads of human activities continues to be a problem especially in developing nations, where effective and efficient wastes disposal system is lacking. This paper presents the result of the study conducted to investigate the environmental benefits of using pulverized bone - obtained from bones generated as waste from abattoirs and slaughter slabs - in the production of structural foamed aerated concrete. Some of the properties investigated into are consistency, workability, compressive strength, tensile strength, and water absorption capacity. The results showed that foamed aerated concrete containing up to 20% cement replacement with pulverized bone developed adequate strength acceptable to standards, for use for construction purposes. It is thus concluded that the use of pulverized bone in concrete production will help clean the environment of potentially hazardous wastes and bring about a significant reduction in use of non-renewable resources. This finding highlights the opportunity that the foamed aerated concrete production provides a mean of efficient and innovative waste management strategy.

2013-01-01T00:00:00Z Ikponmwoas, Efe Falade, Funso Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1104 2015-10-11T15:32:57Z 2013-01-01T00:00:00Z

Title: 28-Day Strength Predicting Model for Foamed Aerated Concrete Containing Pulverized bone as a Partial Replacement of Cement Authors: Ikponmwoas, Efe; Falade, Funso; Fapohunda, Christopher Abstract: This paper presents the results of a mathematical model developed for predicting the 28-day compressive strength of foamed aerated concrete containing pulverised bone as partial replacement of cement for the purpose of quality controls. Strength-porosity relation was used as a basis for the development of the model, and the Bisection Methods of Numerical analysis was used to evaluate the inherent constants. For all the percentages of cement replacement with pulverised bone, the experimental strength values compare well with those of the model. It can thus be concluded that the model is valid for foamed aerated concrete with and without pulverized bone. The model has been validated up to 20% replacement of cement with pulverised bone.

2013-01-01T00:00:00Z Falade, Funso Ikponmwosa, Efe Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1103 2015-10-11T15:25:58Z 2014-01-01T00:00:00Z

Title: Flexural Performance of Foamed Aerated Concrete Containing Pulverized Bone as Partial Replacement of Cement Authors: Falade, Funso; Ikponmwosa, Efe; Fapohunda, Christopher Abstract: This paper presents the results of a study conducted to investigate the flexural behaviour of foam concrete containing pulverised bone as partial replacement of cement. A total of sixty reinforced beams (150×150×750 mm) were used to investigate the flexural behaviour of the specimens. For reinforcement of the beams, hot-rolled, deformed 10-mm-diameter bars with yield and ultimate stresses of 478.10 N/mm2 and 710.81 N/mm2 respectively were used. The cement constituent of the mix was partly replaced with up to 20% of pulverised bone. The flexural parameters investigated are crack formation and its pattern, failure mode, ultimate load, theoretical and experimental ultimate moments, deflection and stiffness. From the results of this investigation, it is concluded that the provision of the design standard in relation to shear and flexural design of beams can be considered as adequate for the design of reinforced foam concrete. It is further concluded that the stiffness is not affected by the inclusion of pulverised bone in the mix at up to 15% cement replacement level, and neither is the deflection pattern of the uncracked sections of the specimens affected by the inclusion of pulverised bone. The bending moments of the specimens, however, decreased with increase in pulverised bone.

2014-01-01T00:00:00Z Fapohunda, Christopher Oyelade, Akintoye Ajibade, Charles http://repository.fuoye.edu.ng:80/handle/123456789/1102 2015-10-11T15:19:59Z 2014-01-01T00:00:00Z

Title: Some Properties of Concrete Containing Aluminum Authors: Fapohunda, Christopher; Oyelade, Akintoye; Ajibade, Charles Abstract: This paper presents the results of investigation conducted to evaluate the properties of concrete containing aluminum Roofing Sheet Waste as partial replacement of cement by weight. The properties investigated included the setting times of cement-ARSW paste, workability, density, compressive strength using 168 numbers of 150 x 150 x 150 mm cube specimens. The chemical compositions and pozzolanic properties were also investigated. The results showed that: (I.) the chemical composition of aluminum Roofing Sheet Waste (ARSW) is suitable for concrete production, (ii.) ARSW has pozzolanic characteristic, (iii.) the concrete produced with ARSW resulted in concrete whose densities are within the range for normal weight concrete, and (iv.) using ARSW to replace cement up to 10% will not affect the compressive strength of the concrete significantly. From these results, it can be concluded that Roofing Sheet Waste is suitable for concrete production, and thus can be used as a mean to remove the potentially harmful waste that ARSW constitutes.

2014-01-01T00:00:00Z Ikponmwosa, Efe Falade, Funso Fapohunda, Christopher Aransiola, James http://repository.fuoye.edu.ng:80/handle/123456789/1101 2015-10-11T15:13:08Z 2014-01-01T00:00:00Z

Title: Flexural Performance Of Bamboo-Reinforced Foamed Aerated Concrete Beams Authors: Ikponmwosa, Efe; Falade, Funso; Fapohunda, Christopher; Aransiola, James Abstract: This study reports the results of investigation conducted to evaluate the performance of foamed aerated concrete beams with bamboo as the tensile reinforcement. The flexural parameters assessed were, load-deflection behaviour, failure mode, and flexural moments. Its density and compressive strength were also investigated. Foamed aerated concrete made from cement-sand ratio of 1:3 with foaming agent to water ratio of 1:33 was prepared. Twelve 150x150x150mm cube specimens were tested for compressive strength at different curing ages of 7, 21, 28 and 45days. Three sets of 12 beams of 225 x 225 x 2350 mm containing bamboo as reinforcement were tested for flexural strength. The first, second and third set respectively had 2, 4, and 6 numbers of 10 mm x 10 mm bamboo as reinforcement. For the cube specimens tested, the compressive strength increased with curing age. The flexural moments of beams increased with increase in the percentage of bamboo strip reinforcement and curing age. All the beams exhibit flexurfal failure. The deflection decreased with increase in the area of bamboo splints as tensile reinforcement, but failure load decreased with increase in area of bamboo in the tension zone. It can be concluded that inclusion of bamboo splints as reinforcement in tension zone improved the flexural performance of foamed aerated concrete.

2014-01-01T00:00:00Z Ikponmwosa, Efe Falade, Funso Fapohunda, Christopher Okosun, James http://repository.fuoye.edu.ng:80/handle/123456789/1093 2015-09-29T13:32:28Z 2014-01-01T00:00:00Z

Title: Flexural Performance of Bamboo Reinforced Foamed Aerated Authors: Ikponmwosa, Efe; Falade, Funso; Fapohunda, Christopher; Okosun, James Abstract: The results of investigation conducted to evaluate the flexural performance of foamed aerated concrete beams with bamboo splints as tensile reinforcement, but with and without shear links are reported in this paper. The properties assessed are: density, compressive strength, crack pattern, deflection, and failure and moments. Foamed aerated concrete, having a cement-sand ratio of 1:3 was prepared. For foam generation, foaming agent and water in the ratio of 1:33 was prepared. A total of seventy two numbers of 225 x 225 x 2350 mm beam specimens with bamboo splints as reinforcement, with and without shear links and compression reinforcement were tested for flexural strength. For the shear links, 8mm diameter steel reinforcement at 150 mm centres was used. The specimens were tested at 7, 21, 28 and 45 days of curing. The results showed that beams specimens without compression and shear reinforcement exhibit shear failure while the beam specimens with compression and shear reinforcement displayed flexural failure. Larger deflection was recorded for beams without compression and shear reinforcement than for beam specimens with compression and shear reinforcement. Also beam specimens with compression and shear reinforcement developed higher moment than specimens without compression reinforcement. From the results of the investigations, it can be conclude that specimens with compression reinforcement in the compression zone displayed a better flexural performance than specimens without compression reinforcement in the compression zone.

2014-01-01T00:00:00Z Falade, Funso Ikponmwosa, Efe Fapohunda, Christopher Akinniyi, Toyin Olori, Kehinde http://repository.fuoye.edu.ng:80/handle/123456789/1092 2015-09-28T14:50:34Z 2014-01-01T00:00:00Z

Title: Effect of Foam Concentration on Structural Characteristics of Steel Reinforced Authors: Falade, Funso; Ikponmwosa, Efe; Fapohunda, Christopher; Akinniyi, Toyin; Olori, Kehinde Abstract: This work presents the results of investigation conducted to evaluate the effect of foam concentration on the structural properties of steelreinforced foamed aerated concrete beams. The properties investigated were the density, compressive strength, shear strength, and flexural strength. Relationships between compressive strengths and densities were developed, as well as comparison between the compressive strengths and the shear strengths. The foam concentrate/water ratios adopted in this investigation are 1:20, 1:25, 1:29, 1:33, 1:40, and 1:50. For the compressive strength and the dry density determinations, 150 x 150 x 150 mm cube specimens were cast and tested; and 225 x 225 x 2300 mm reinforced beam specimens were used for the shear and flexural strengths tests. The results of the investigation shows that: (i) a reduction in foam concentration through the use of higher foaming agent to water ratio resulted in decrease in density, decrease in compressive strength and increased in deflection. (ii) there was increase compressive strength, density with curing ages at all foamed concentrations (iii) the relationship between the compressive strength and the density of the specimens were observed to be linear for all the foam concentrations, (iv) the mathematical expressions developed between the compressive strengths and the densities for the different foam concentration can be considered valid for the specimens used in this work, and (v) the shear strengths developed by the beam specimens used in this investigation were between 13.15% and 20% of the compressive strengths.

2014-01-01T00:00:00Z Ikponmwosa, Efe Fapohunda, Christopher Aniebona, Emeka Lasoju, Folashade http://repository.fuoye.edu.ng:80/handle/123456789/1091 2015-09-28T14:43:44Z 2014-01-01T00:00:00Z

Title: Flexural Behavior of Reinforced Concrete Beams Containing Polyvinyl Waste Powder (PWP) as Replacement of Cement Authors: Ikponmwosa, Efe; Fapohunda, Christopher; Aniebona, Emeka; Lasoju, Folashade Abstract: The flexural performance of reinforced concrete beam specimens with polyvinyl waste powder (PWP) as partial replacement of cement is reported in this paper. Cement was replaced with PWP up to 50% by weight at intervals of 10%. The flexural parameters investigated were: the failure patterns, load-deflection characteristics, stiffness, and ultimate moments. The reinforced beam specimens used were 150 x 150 x 1000 mm, and tests were done at the curing age of 28 days. The results showed that: (i) the failure pattern is a combination of flexure and diagonal tension shear failure, (ii) the deflection characteristics of beam specimens improved progressively as the level of cement replacement with polyvinyl waste increased, (iii) reduction in the stiffness of the beam specimens as the percent cement replacement with polyvinyl wastes increased, and (iv) ultimate moments of beam specimens increased with percent replacement of cement with polyvinyl waste up to 20% level.

2014-01-01T00:00:00Z Ikponmwosa, Efe Fapohunda, Chrsitopher Kolajo, O Eyo, O http://repository.fuoye.edu.ng:80/handle/123456789/1090 2015-09-28T14:34:19Z 2015-01-01T00:00:00Z

Title: Structural behaviour of bamboo-reinforced foamed Authors: Ikponmwosa, Efe; Fapohunda, Chrsitopher; Kolajo, O; Eyo, O Abstract: This paper reports the findings of experimental study to investigate the structural behaviour of bamboo-reinforced foamed concrete slab with polyvinyl waste as partial replacement of fine aggregates. The structural properties studied were: compressive strength, density, crack development pattern and propagation, failure pattern, load–deflection characteristics and the ultimate moment. Compressive strength and the density tests were also conducted using 150·150·150 cube specimens. The flexural behaviour was investigated by using 1300·500·100mm slab specimens. The results showed that: (i) partial replacement of sand with polyvinyl waste (PW) improved the compressive strength of the foamed aerated concrete specimens, (ii) that slab specimens with polyvinyl waste as partial replacement sand exhibited shear bending failure, (iii) all the slab specimens with polyvinyl waste as partial replacement sand recorded lower values of deflection for the same loading, as the level of sand replacement with polyvinyl wastes increased, and (iv) increase in theamountofsandreplacedwithpolyvinylwastesresultedinimprovedbendingperformanceofthe slab specimens.

2015-01-01T00:00:00Z Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1089 2015-09-28T13:54:07Z 2010-01-01T00:00:00Z

Title: Effect of Blast Furnace Slag on Chloride Permeability of Concrete Cured at Elevated Temperatures Authors: Fapohunda, Christopher Abstract: Concrete made from ordinary Portland cement continues to be used as the main construction materials because of its durability and strength characteristics in service life. But the contrary becomes the case when such concrete is exposed to aggressive environment created by the prevalence of chloride ions that are common in marine/coastal environment characterized by temperature extremes, that is peculiar to Nigeria. Hot marine and coastal environment, constitute an aggressive environment that has been found to be deleterious to the strength and durability characteristics of concrete, thus causing premature deterioration of concrete structures. Research works to reverse this trend go on continuously. This paper presents one of such works which investigates the effect of partial replacement of cement with slag on chloride permeability of concrete cured at elevated temperatures. It was found out that partial replacement of cement with slag increases the resistance of concrete to chloride penetration

2010-01-01T00:00:00Z Oyelade, Akintoye Fapohunda, Christopher Adewusi, O http://repository.fuoye.edu.ng:80/handle/123456789/1088 2015-09-28T13:45:35Z 2014-01-01T00:00:00Z

Title: A COMPARISON OF BOND PERFORMANCE OF CONCRETE REINFORCED WITH REINFORCEMENTS FROM DIFFERENT MANUFACTURERS Authors: Oyelade, Akintoye; Fapohunda, Christopher; Adewusi, O Abstract: The transfer of stress from a deformed bar to the concrete is achieved by mechanical locking of the steel into the surrounding concrete. This interfacial bond strength between steel and the surrounding concrete is an important factor influencing the strength and durability of reinforced concrete structure. This paper presents the result of investigation conducted to find out the bond performance of reinforcement from different manufacturer. 12 mm and 16 mm diameter steel specimens from five different manufacturers were used for this investigation. Tensile properties and pull out test were conducted. The results showed that: (i) all the steel specimens substantially met the minimum requirement specified by relevant standards for both 12 mm and 16 mm diameters, (ii) Bond performance of locally-made was found to be better than the imported ones for 12 mm diameter, but for 16 mm diameter, imported steel showed a better bond performance than the locally made ones, (iii) All the steel specimens exhibited splitting failure, (iv) the lowest values of slippage were exhibited by a locally-sourced steel specimens, and (v) bond stresses obtained from this investigation for both 12 mm and 16 mm diameter bars are structurally adequate.

2014-01-01T00:00:00Z Ikponmwosa, Efe Falade, Funso Fapohunda, Christopher http://repository.fuoye.edu.ng:80/handle/123456789/1087 2015-09-28T13:37:28Z 2014-01-01T00:00:00Z

Title: A Review and Investigations of Some Properties of Foamed Aerated Concrete Authors: Ikponmwosa, Efe; Falade, Funso; Fapohunda, Christopher Abstract: The paper presents the results of investigation conducted on foamed aerated concrete – a lightweight concrete - with a view to determining its potential as a construction material in Nigeria. The properties investigated on foamed aerated concrete having a designed density of 1600kg/m3 were: workability, density, compressive strength, tensile strength, and the water absorption capacity. The results showed that at the designed density adopted for this work, the material was workable and repeatable. Other results at 28 days of curing are: (i) compressive strength of 15. 43N/mm2, 13.89N/mm2 respectively for air-cured and water-cured specimens, (ii) modulus of rupture of 2.53N/mm2 (ii) splitting tensile strength of 1.63N/mm2, and (iv) the water absorption capacity of 1.03%. The tensile strength to compressive strength ratio was more than 10%. These properties improved with time. It can be concluded that the foamed aerated concrete used for this work is repeatable, and of adequate strength for use as a construction material.

2014-01-01T00:00:00Z Ikponmwosa, Efe Fapohunda, Christopher Enikhuenmen, S. http://repository.fuoye.edu.ng:80/handle/123456789/1086 2015-09-28T13:31:44Z 2014-01-01T00:00:00Z

Title: Suitability Of Polyvinyl Waste Powder (Pwp) As Partial Replacement For Cement In Concrete Production Authors: Ikponmwosa, Efe; Fapohunda, Christopher; Enikhuenmen, S. Abstract: powder (PWP) as partial replacement of cement in the production of concrete. Up to 50% by weight of cement was replaced with PWP at interval of 10%. The parameters investigated are: the chemical composition of polyvinyl waste powder (PWP) and the setting times of cement-polyvinyl paste. Also investigated in concrete containing polyvinyl powder were: workability, density, compressive strength, and tensile strength. The results showed that polyvinyl waste powder (PWP) has a pozzolanic effect by the consideration of strength activity index, and higher compressive strength than the control specimens for replacement level up to 20%, and up to 30% cement resulted in higher splitting strength. Further inclusion of polyvinyl waste powder (PWP) increased the setting times of cement-PWP paste, and resulted in a reduction in concrete workability as the replacement value of cement with PWP increased. From these results, it can be concluded that polyvinyl waste powder (PWP) is suitable as partial replacement of cement at the replacement levels considered in the current investigation.

2014-01-01T00:00:00Z