Research Papers/Topics in Civil And Environmental Engineering

Effect of Date Palm Seed Ash as a Supplementary Cementitious Material in Concrete

AbstractThis study investigates the effect of Date Palm Seed Ash (DPSA) as a pozzolan on the workability, compressive strength and water absorption capacity of concrete. Temperature regulated kiln was used to burn the Date Palm Seed (DPS) into DPSA in two stages: it was first burned for eight hours at an optimum temperature of 590oC and then cooled for two days. It was again burned for three hours at an optimum temperature of 630oC for eight hours and was air cooled again for three days. The ...

Assessment Of The Impact Of Effluents From Bonite Bottlers And China Paper Industrieson The Water Quality In Karanga River, Tanzania

ABSTRACTThe raise in industrial development in catchments has left no option but to discharge industrial effluents into water bodiessuch as sea, rivers and streams. Discharging of industrial effluents into water bodies if not done with care through effluent pre-treatment and assurance of complience with allowable standards can lead to water quality impairment. This study was carried outto assess the effects of the effluents from Bonite bottlers and China paper industries on water quality in K...

Assessment Of The Effectiveness Of Blue Nile And White Nile Water Treatment Plants In Khartoum State )A Case Study Of Bahri, Mogran, Alshajara And Jabal Awlia Plants)

Abstract Treatment of water is considered as a critical challenge especially in developing countries since this treatment is an essential facility to conserve the public health and environment by eliminating of waterborne diseases and pathogens and make it acceptable to consumers. The objective of this research is to assess the efficiency of Blue Nile (Bahri and Mogran) and White Nile (Alshajra and Jabal Awlia) water treatment plants which consist to conventional water treatment units ...

Assessment of groundwater quality for Umbada, District,Omdurman, Sudan

Abstract:This study was dealing with assessment of groundwater quality and its fitness for agriculturaland domestic uses for Umbada district in western Omdurman, Sudan.The objectives of the study were to determine the groundwater quality through chemical and microbiological analyses for the samples taken from the studied boreholes in the area under investigation.Water samples for five groundwaterwells were collected in poly ethylene bottles and analyzed physically, chemically and bacte...

Post-Independence Evaluation Of Air Transport Safety In Nigeria

ABSTRACT This research evaluates air transportation safety in Nigeria. Records of aircraft crashes in Nigeria were extracted from different archives to create a database of air traffic incidences within the air space of Nigeria since Independence. Statistical overview of air transportation accidents in Nigeria using accident data to examine a national trend in air transportation disasters was carried out. Results of the analysis showed that air traffic accidents in Nigeria have increased...

Synthesis, Characterization and Catalytic Investigations of Pt- Based Binary (Bimetallic) and Ternary (Trimetallic) Nanoparticles

AbstractThis work tests the hypothesis that nanoparticles of 75 at.% platinum (Pt) composition andanisotropic morphology, will outperform standard catalysts in (PEMFC) hydrogen fuel cells.A survey of the scientific literature on this topic is first presented. The synthetic strategieswhich were developed for the preparation of novel Pt-based binary (bimetallic) and ternary(trimetallic) nanoparticles, containing nickel (Ni), cobalt (Co) and/or vanadium (V), are thendescribed. The synth...

Development Of Iron And Steel Processing Plant In Kenya

Steel plays a very key role in the transformation of an economy, as it is the key driver in any industrial revolution majorly being used in transport, building and construction, power generation and machinery. It is in this regard that the study of iron and steel in Kenya is important. This study sought to determine the viability of setting up an iron and steel processing plant in Kenya, develop a process design for such a plant and determine the plant's economic feasibility. This resea...

Ageing And Axial Cyclic Loading Studies Of Displacement Piles In Sands

Abstract An investigation is presented into the mechanisms governing both the ageing and axial cyclic loading characteristics of displacement piles in silica sands. The thesis considers first the state–of–knowledge regarding the axial capacity of displacement piles in silica sands. Three main areas of uncertainty are identified; the stress regime setup by installation, the mechanisms of ageing that lead to capacity increases with time (set-up), and the effects of axial cyclic loadin...

Development Of An Expert System For The Optimal Design Of Roof And Bridge Trusses

ABSTRACT Several attempts have been made to optimize the design of bridge and roof trusses. This work presents the development of an Expert System (ES) for the optimal design of bridge trusses subjected to moving loads and roof trusses as well. The research improves on such previous attempts in many areas including automation of structure data generation, experience gaining facilities, suggestions and decision making, flexibility, and structural arrangement, shortest possible volume of ...

Reliability And Risk-Based Assessment Of Offshore Jacket Structures In The Niger Delta, Nigeria

ABSTRACT In Nigeria, a large number of jacket platforms installed in the Niger Delta have been operating beyond design life of 25 years due to the exorbitant cost of replacement with new ones. These Jacket structures often undergo corrosion and fatigue damages due to hostile offshore conditions and accidental release of corrosive agents from crude oil production activities. Therefore, there is a growing need to closely monitor the structures to protect unexpected failures. Applications ...

Assessment Of Atmospheric Dispersion Of Fly Ash Within The Vicinity Of Van Eck Coal-Fired Power Station, Windhoek, Namibia

ABSTRACTIncrease in population led to the growth of industrialisation which has stimulated the development of alternatives to produce electricity, including the use of coal. Coal-fired power plants produce an abundant amount of electricity, addressing the ever-increasing electricity demand. Power plants produce fly ash as a result of coal combustion for electric power generation. The Van Eck Power Station is the oldest and only coal-fired plant in Namibia that is located at the outskirts of W...

Analysis Of Challenges Related To Poor Environmental Regulatory Framework On Mineral Exploration Projects: A Case Of Tanzania

Abstract In the United Republic of Tanzania (URT), all environmental issues related to the mining industry are regulated according to two principle Acts: The Mining Act and the Environmental Management Act, and their respective regulations. The current acts were enacted in 2010 and 2004 respectively. Mineral exploration (that includes all on-site activities performed before a mining project is declared feasible) projects in URT appears to be “unforgotten phenomena” in the two major le...

28-Day Strength Predicting Model For Foamed Aerated Concrete Containing Pulverized Bone As A Partial Replacement Of Cement

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 ...


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