F. Udoeyo

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Ayse Asatekin

Tufts University

Jayjit Majumdar

University of Kalyani

Abdullah M. Asiri

King AbdulAziz University (KAU) Jeddah, Saudi Arabia

Fahmi Muhammad Ridwan

Universiti Malaysia Perlis (UniMAP)

Gerard Hawkins

Martin S Hoecker-Martinez

University of Redlands

Kapitolina Fedorova

Tallinn University

Asli Coban

Izmir University of Economics

A.Tonino Tonino

University of Amsterdam

Vivek Dave

St. John Fisher College

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Papers by F. Udoeyo

Can we find a correlation between students’ resilience and academic performance?

The American Psychological Association defines resilience as the process and outcome of successfu... more The American Psychological Association defines resilience as the process and outcome of successfully adapting to difficult or challenging life experiences, especially through mental, emotional, and behavioral flexibility and adjustment to external and internal demands. To have a successful career in civil engineering, would-be engineers must possess the necessary intrapersonal skill of resilience. Resilience also assists would-be engineers to realize successful academic rigor and retention in tertiary institutions. The skill of resilience is not solely innate to a particular individual but can be both developed and inculcated. This research assesses the correlation between resilience and academic performance, using protective factors such as optimism, adaptability, self-sufficiency, and persistence. Subsequently, this research will identify key factors that educators can instill in students to enhance resiliency in the classroom.

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Properties of Palm Nut Fiber–Reinforced Cement Composite Containing Pulverized Kernel Shell as Supplementary Material

Journal of Materials in Civil Engineering, 2011

... Felix F. Udoeyo, Chinedu IO Anyanwu ... The authors are grateful to Professor OJ Eze-Uzomaka ... more

Geotechnical Properties of Problem Soils Stabilized with Fly Ash and Limestone Dust in Philadelphia

Journal of Materials in Civil Engineering, 2011

[Journal of Materials in Civil Engineering 23, 711 (2011)]. Robert Brooks, Felix F. Udoeyo, Keert... more

Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

Thirty concrete mixes of differing water-binder ratio containing 0, 10, 20, 30, 40 and 50 % later... more Thirty concrete mixes of differing water-binder ratio containing 0, 10, 20, 30, 40 and 50 % laterite as a partial replacement for sand were used to prepare laterized concrete specimens for the study of the effect of nonstandard curing methods on the strength of specimen. The effectiveness of a curing method was measured quantitatively as the ratio of the compressive strength of specimen cured using the non-standard method to those cursed using the standard water-curing method specified in the BS1881: Part 3:1970 (control). The results of the investigation show that with continuous wetting of the nonstandard curing media by sprinkling with water, the strength of the concrete obtained could be comparable to those cured using the control method. Of the four nonstandard curing methods considered in the study it was observed that the strength of sand-and sawdust-cured specimen were in some instances the same as or higher than those of the standard cured specimens at early age (7 days). Although at later age (28 days) there were significant differences between the strength of specimens cured using the nonstandard methods and those of corresponding laterite content and water-binder ratio cured using the control method as established by t-test, the designed strength of 20 MPa was attained by all specimens cured using the nonstandard methods, which is indicative that these nonstandard methods could be used as alternative to the standard water curing, especially in situations where much water may not be available for curing specimens.

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1 Early Prediction of Laterized Concrete Strength by Accelerated Testing

This paper presents the results of a laboratory investigation on the efficiency of the boiling wa... more This paper presents the results of a laboratory investigation on the efficiency of the boiling water method of accelerated strength testing to predict the 28-day compressive strength of laterized concrete (concrete containing laterite as full or partial replacement of sand). The results of the work showed that the accelerated strength of the concrete was between 72 and 84 % of its 28 days strength. A regression model relating the accelerated strength to the 28-day compressive strength based on the generated data is herein proposed as a power equation for use by engineers and other construction professionals for quality control and early strength assessment during construction of civil engineering infrastructure involving laterized concrete.

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Residual Compressive Strength of Laterized Concrete Subjected to Elevated Temperatures

This research presents the results of an experimental program to investigate the strength perform... more This research presents the results of an experimental program to investigate the strength performance of laterized concrete (LATCON) when subjected to elevated temperatures of 200, 400 and 600oC. Six concrete mixes incorporating 0, 10, 20, 30, 40 and 50% Laterite as a replacement by weight of sand was prepared. After heat pretreatment specimens were cooled using either rapid cooling (water-cooling) or natural cooling (air-cooling). An analysis of variance test shows that exposure temperature, cooling regime, and the ir interaction have a significant influence on the compressive strength of the samples. When subjected to the investigated temperatures specimens experienced strength losses that increased with temperature. This study further reveals that air-cooled concrete specimens maintained higher residual strength values than water-cooled specimens. A comparison of the residual compressive strength data obtained in this study with code provisions in Eurocode and CE B d esign curve ...

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Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

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Influence of Specimen Geometry on the Strengths of Laterized Concrete

This paper presents the results of an experimental program that investigates the influence of spe... more This paper presents the results of an experimental program that investigates the influence of specimen geometry on the compressive and split tensile strength of laterized concrete (LATCON). Four cylinder sizes were considered for the investigations: O150 mm × 300 mm, O150 mm × 250 mm, O100 mm × 200 mm and O100 mm × 100 mm. Analysis of variance tests showed that specimen geometry had significant impact on the strength of LATCON. The results further revealed that the average conversion factor (ratio of 28 days strength of non-standard cylinder to the strength O150 mm x 300 mm standard cylinder) was 0.90 to 1.18 for compressive strength and 0.46 to 0.91 for split tensile strength. A regression model using the data obtained in this study is also proposed to relate the 28-day strength of O100 mm x 100 mm nonstandard cylinder to that of O150 mm × 300 mm standard cylinders.

Influence of Compaction Delay On Some Characteristics of Lateritic Soil Stabilized With Cement Kiln Dust

Global Journal of Pure and Applied Sciences, 2001

Imo lateritic soil as a sorbent for heavy metals

This paper presents the results of an experimental program to investigate the adsorption capacity... more This paper presents the results of an experimental program to investigate the adsorption capacity of Imo laterite as a sorbent for heavy metals in contaminant barriers. The study reveals that the adsorption capacity of the soil for Pb, Cd, and As increases with increase in sorbate concentration. Based on the obtained results it was established that arsenic has the highest affinity for the lateritic soil, followed by lead, and then by cadmium. The soil may be used as lining material under landfills to absorb the heavy metals so that the ground water resources could be maintained safer.

Strength Performance and Behavior of Concrete Containing Industrial Wastes as Supplementary Cementitious Material (SCM)

This paper presents the results of an experimental investigation of the strength and behavior of ... more This paper presents the results of an experimental investigation of the strength and behavior of concrete containing blast furnace slag (BFS) and coal fly ash (CFA) as a partial replacement for ordinary Portland cement (OPC). Test results of the study show that the designed strength was exceeded and that the ductility ratio and the safety margin against brittle failure of concrete containing these industrial by-products were comparable to those of the reference concrete (normal ordinary Portland cement concrete), proving the feasibility of using the waste materials as alternative construction materials.

Early Prediction of Laterized Concrete Strength by Accelerated Testing

This paper presents the results of a laboratory investigation on the efficiency of the boiling wa... more This paper presents the results of a laboratory investigation on the efficiency of the boiling water method of accelerated strength testing to predict the 28-day compressive strength of laterized concrete (concrete containing laterite as full or partial replacement of sand). The results of the work showed that the accelerated strength of the concrete was between 72 and 84% of its 28 days strength. A regression model relating the accelerated strength to the 28-day compressive strength based on the generated data is herein proposed as a power equation for use by engineers and other construction professionals for quality control and early strength assessment during construction of civil engineering infrastructure involving laterized concrete.

Characteristics of Kenaf Fiber-Reinforced Mortar Composites

Water- retted Kenaf fibers were used as reinforcement in mortar composites of size, 650 mm × 450 ... more Water- retted Kenaf fibers were used as reinforcement in mortar composites of size, 650 mm × 450 mm × 8 mm. Three fiber contents (0.5 %, 1.0 % and 1.5 %) and four fiber lengths (20 mm, 30 mm, 40 mm and 50 mm) were considered in the study. Physical and mechanical characteristics of the composites were evaluated according to ASTM and other appropriate standards. The results of the experimental program showed that although the bending capacity ofkenaf fiber-reinforced mortar sheet decreased with increase in fiber content, the flexural toughness and the impact resistance of the composite were enhanced with higher content of the fiber, compared with the control composites (composite without fiber). The water absorption and the fire resistance of the composite were also observed to be within acceptable limits specified by relevant standards.

Sawdust Ash as Concrete Material

Journal of Materials in Civil Engineering, Apr 1, 2002

Mound Soil as Construction Material

Journal of Materials in Civil Engineering, Aug 1, 2000

Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

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Imo Lateritic Soil as a Sorbent for Heavy Metals

IJRRAS 4 (1) ● July 2010 Udoeyo & al. ● Imo Lateritic Soil as a Sorbent for Heavy Metals 1 IM... more

Dimensional Variations in Reinforced-Concrete Members

Journal of Structural Engineering, Dec 1, 1995

This paper focuses on a study of the variations in geometrical quantities of reinforced-concrete ... more

Early Prediction of Laterized Concrete Strength by Accelerated Testing

... Felix F. Udoeyo1, Robert Brooks2, Philip Udo-Inyang3&amp; Richard O. Nsan4 1Assistant Pro... more

Maize-cob Ash as Filler in Concrete

Journal of Materials in Civil Engineering, Mar 14, 2003

[Journal of Materials in Civil Engineering 15, 205 (2003)]. Felix F. Udoeyo, Sanni A. Abubakar. A... more

Can we find a correlation between students’ resilience and academic performance?

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Properties of Palm Nut Fiber–Reinforced Cement Composite Containing Pulverized Kernel Shell as Supplementary Material

Journal of Materials in Civil Engineering, 2011

... Felix F. Udoeyo, Chinedu IO Anyanwu ... The authors are grateful to Professor OJ Eze-Uzomaka ... more

Geotechnical Properties of Problem Soils Stabilized with Fly Ash and Limestone Dust in Philadelphia

Journal of Materials in Civil Engineering, 2011

[Journal of Materials in Civil Engineering 23, 711 (2011)]. Robert Brooks, Felix F. Udoeyo, Keert... more

Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

Download

1 Early Prediction of Laterized Concrete Strength by Accelerated Testing

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Residual Compressive Strength of Laterized Concrete Subjected to Elevated Temperatures

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Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

Download

Influence of Specimen Geometry on the Strengths of Laterized Concrete

Influence of Compaction Delay On Some Characteristics of Lateritic Soil Stabilized With Cement Kiln Dust

Global Journal of Pure and Applied Sciences, 2001

Imo lateritic soil as a sorbent for heavy metals

Strength Performance and Behavior of Concrete Containing Industrial Wastes as Supplementary Cementitious Material (SCM)

Early Prediction of Laterized Concrete Strength by Accelerated Testing

This paper presents the results of a laboratory investigation on the efficiency of the boiling wa... more This paper presents the results of a laboratory investigation on the efficiency of the boiling water method of accelerated strength testing to predict the 28-day compressive strength of laterized concrete (concrete containing laterite as full or partial replacement of sand). The results of the work showed that the accelerated strength of the concrete was between 72 and 84% of its 28 days strength. A regression model relating the accelerated strength to the 28-day compressive strength based on the generated data is herein proposed as a power equation for use by engineers and other construction professionals for quality control and early strength assessment during construction of civil engineering infrastructure involving laterized concrete.

Characteristics of Kenaf Fiber-Reinforced Mortar Composites

Sawdust Ash as Concrete Material

Journal of Materials in Civil Engineering, Apr 1, 2002

Mound Soil as Construction Material

Journal of Materials in Civil Engineering, Aug 1, 2000

Effect of Non-Standard Curing Methods on the Compressive Strength of Laterized Concrete

Download

Imo Lateritic Soil as a Sorbent for Heavy Metals

IJRRAS 4 (1) ● July 2010 Udoeyo & al. ● Imo Lateritic Soil as a Sorbent for Heavy Metals 1 IM... more

Dimensional Variations in Reinforced-Concrete Members

Journal of Structural Engineering, Dec 1, 1995

This paper focuses on a study of the variations in geometrical quantities of reinforced-concrete ... more

Early Prediction of Laterized Concrete Strength by Accelerated Testing

... Felix F. Udoeyo1, Robert Brooks2, Philip Udo-Inyang3&amp; Richard O. Nsan4 1Assistant Pro... more

Maize-cob Ash as Filler in Concrete

Journal of Materials in Civil Engineering, Mar 14, 2003

[Journal of Materials in Civil Engineering 15, 205 (2003)]. Felix F. Udoeyo, Sanni A. Abubakar. A... more

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