Research Papers/Topics in Civil Engineering

Effects of Addition of Carbide on Sewage Degradation

ABSTRACT  The objective of this research is to investigate the effect of addition of carbide on sewage degradation. To provide answers to the above objective, some laboratory tests were conducted which include Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total coliform, pH and Suspended Solids (SS) tests. Six experimental set ups of 5liters of sewage were constructed in the laboratory under anaerobic condition. Each of the sewage contained 0g (which served as control), 1g, ...

Field and Laboratory Investigation of the Influence of Fine Aggregate Angularity on Rutting of Flexible Pavement A Case study - Khartoum State

ABSTRACT  The primary purpose of this study is to identify the causes of rutting in highway pavements in the form of channelization particularly on wheel tracks resulting from high traffic repetitions and environmental effects. The rutting reduces the required performance due to poor hot mix asphalt (HMA) components and construction to mention a few. The study focused on the impact of fine aggregate angularity (FAA) to increase Asphalt layer stability. AASHTO testing method (T 304) was appli...

Bituminous Stabilization of Clay Soils for Road Construction

ABSTRACT The rate at which roads fail in Nigeria should worry any responsible citizen. Considering the enormous resource expended to construct a kilometer of road, it is heartbreaking when the same road fail barely six (6) months after construction. For in the life of our dear country, the all-important economic theory of opportunity cost is applicable just as it is elsewhere in the world. Stabilization is a viable alternative to achieving a durable road construction regime. Soil stabilizati...

Mixed Method in Elasticity in the Analysis of Layered Beams

TABLE OF CONTENTS ABSTRACT . . ACKNOWLEDGEMENT LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS CHAPTER ONE: INTRODUCTION . * . . . .  1.1 Approach To Elasticity Problems-General ..  1.2 Reduction Of A Two-Dimensional Problem To A One-Dimensional One . . . .  1.3 Vlasov's Mixed Method , . .  1.4 Aim And Scope . @ . .  1.5 Review Of Literature .a . .  CHAPTER TWO: FORMULATIONS OF THE GOVERNING EQUATIONS .. 0. . .  2.1 Plane Stress Formulation . . a .  2.2 Plane Strain Case . . . . . .  ...

Shear Behaviour of Reinforced Concrete Beams Using Granite As Coarse Aggregate Without Shear Links

This work considers the shear behavior of reinforced concrete beams using granite as coarseaggregate without shear links. Four reinforced concrete beams were cast and tested to understandthe shear behavior with varying tension reinforcement ratios. The beams were cast in two pairs;the first pair had a depth of 184mm, a width of 110mm, and a length of 1500mm. The second pairhad a depth of 150mm, a width of 90mm, and a length of 1000mm. The first and second pair ofbeams had span-to-depth ratios...

Kinetics of Lead Adsorption by Activated Rice Husk Ash

ABSTRACT  The need to clean-up heavy metals that contaminate water cannot be over emphasized. This paper examined the kinetics of lead adsorption using activated rice husk ash. The influences of contact time, adsorbent dose, pH and temperature on adsorption were investigated. From the results obtained, by analyzing the effect of contact time, it was discovered that maximum adsorption of about 90 % removal efficiency took 240 minutes using 0.2g of adsorbent. While in testing for the effect of...

Finite Strip Analysis of Continuous Thin-Walled Box Girder Bridges

ABSTRACT  Thin-walled box girder bridges are very efficient structural solution for long-span bridges because of their high torsional resistance, stability, economy, and aesthetic appearance. Though, this type of bridge is not common in Nigeria, it is envisaged that they may offer economic advantages in future high way projects in Nigeria. Analytically, however, the box girder bridge is a very complex indeterminate problem. Therefore, the primary objective of this research was to produce a r...

Appraisal of Construction Management Practice in Nigeria

ABSTRACT  Construction industry has complexity in it nature because it contains large number of parties such as clients, consultants and contractors. The factors that influence construction management practice differ from country to country, due to prevailing conditions. The objective of this project is to identify factors that influence construction management practice in Nigeria construction industry and elicit perceptions/ranking of the severity using relative importance index of the vari...

Analysis of Sandcrete Blocks Production by using different Sources of Sharp Sands in some Parts of South-East Geo-Political Zones. A Case Study Enugu and Ebonyi State

ABSTRACT  This study examined the experimental analysis of sandcrete block production by using different sources of sharp sands in Enugu and Ebonyi State of South East Geo-Political Zone. As a result of the increasing cost of block production, many manufacturers and builders have resorted to using samples of sharp sand from different locations without appropriate consideration of the material constituents of the samples thereby, resulting in poor and undurable sandcrete blocks production. In...

The Effect of Silica Fume (S.F) on the Properties of Fresh and Hardened Concrete

General Introduction Concrete is a composite material consisting of aggregates enclosed in a matrix of cement paste including possible pozzolans, has two major components, cement paste and aggregates. The strength of concrete depends upon the strength of these components, their deformation properties, and the adhesion between the paste and aggregate surface [ 1 ]. In recent years, the construction industry has shown significant interest in the use of high strength concrete (HSC), in applica...

Development of Layered Elastic Analysis Procedure for Prediction of Fatigue and Rutting Strains in Cement - Stabilized Lateritic Base of Low Volume Roads

ABSTRACT It is generally known that the major causes of failure in asphalt pavement is fatigue cracking and rutting deformation, caused by excessive horizontal tensile strain at the bottom of the asphalt layer and vertical compressive strain on top of the subgrade due to repeated traffic loading. In the design of asphalt pavement, it is necessary to investigate these critical strains and design against them. This study was conducted to develop a simplified layered elastic analysis and design ...

Analysis of Orthotropic Plates in Free Vibration Regime Using Rayleigh – Ritz Method

ABSTRACT The assumed deflection shapes used in the approximate methods such asin the Rayleigh–Ritz method were normally formulated by inspection andsometimes by trial and error, until recently, when a systematic method ofconstructing such a function in the form of characteristic orthogonal polynomials(COPs) was developed in 1985. However, vibrational analyses of plates with all edges free or clamped are much more complicated. This project aims at establishing particular expressions for the ...

Comparative Analysis of the Compressive Strength of Concrete with Gravel and Crushed Burnt Bricks as Coarse Aggregates.

ABSTRACT The research was conducted to study the possibility of utilizing the waste bricks abundantly available in most parts of Gwer-West Local Government Area of Benue State, particularly Naka, the Local Government capital, as coarse aggregates in structural concrete. Trial mixes were prepared using the crushed burnt bricks known also as brick bats as coarse aggregates only, mixture of crushed bricks and river washed gravel as well as using river washed gravel from River Benue only at varyi...

Safety Analysis of Structural Foundations Built on Abandoned Solid Waste Sites

ABSTRACT This study adopted experimental design to investigate the suitability of abandoned solid waste site soil (ASWSS) as a foundation material for building construction. Measurements of geotechnical properties of stratified random soil samples of ASWSS and adjoining natural soil (NS) at depths 1.5, 2.0, 2.5, 3.0 and 3.5 m were obtained from six test points in Kaduna, Nigeria. The soil samples were subjected to sieve analysis, Atterberg limits (liquid limit, plastic limit, plasticity index...

Optimization and Modelling of Rice Husk Ash-Clay Soil Stabilization

ABSTRACT The over dependent on the utilization of industrially manufactured soil improving additives (cement, lime etc), have dept the cost of such stabilized soils financially high. The hitherto have continued to deter the underdeveloped and poor nations of the world from providing accessible pavement to their rural dwellers who constitute the higher percentage of their population and are mostly, agriculturally dependent. A number of researchers have studied the physical and chemical propert...


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