In this research, the influence of aggregates sizes, cover to reinforcement thickness, concrete age, exposure period on the mechanical properties of normal concrete (NC) subjected to different elevated temperatures were investigated. Two types of concrete (combined aggregates concrete and single aggregate size concrete) were used to determine the r... Continue Reading
The causes of severe cracks on lightly loaded buildings within the Sokoto Rima River Basin Development Authority Heaaquarters Complex have been found to be due to inadequate foundation aesign. The soil within the complex is founa to be predominantly Reddish Brown Well Graded Clayey Gravel exhibiting collapsing characteristics. The soil has been sho... Continue Reading
A mathematical model for prioritizing road maintenance in terms of the timing of maintenance intervention and scope of work done is developed. Three sub-models are incorporated namely, classification, performance and cost sub-models. The classification sub-model uses the roughness measurement to classify the road sections into one of six different ... Continue Reading
The suitability of three types of locally produced fatty oils, as quenchants was investigated in this research work. Palm oil, shea butter oil and ground nut oils were used in quenching ST 60-2 plain carbon steel produced by Delta Steel Company, Aladja. The quench characteristics of the steel as determined by the Jominy End Quench Test compare favo... Continue Reading
Waste coca cola plastic bottles were subjected to depolymerization by aminolysis using mono ethanol amine (MEA) in the presence of sodium acetate as catalyst, the product bis(2-hydroxy ethylene terephthalate amide (BHETA) was compared with sodium dichromate (Na2Cr2O7) as corrosion inhibitors for mild steel in 0.5M HCl and 0.5M H2SO4 at ambient temp... Continue Reading
Multiple-Input Multiple-Output (MIMO) equalizers are of enormous importance in wireless communication systems due to their ability to combat the effect of Intersymbol Interference (ISI) in multipath environment. In this research, a MIMO 2X2, 2X3, 2X4, 2x5, 4X4, and 6X6 system transmission with Binary Phase shift keying (BPSK) modulation in Rayleigh... Continue Reading
In this research three different ashes were used separately as partial replacement in concrete, these are rice husk ash (RHA), palm oil Husk ash (POHA) and coconut husk ash (CHA). These waste materials were obtained on burning of husk of each of the three materials. Chemical composition, sieve analysis, consistency, setting time, Specific gravity t... Continue Reading
This work reports the design, construction, simulation and testing of a 300W wind battery charger. The design was carried out based on long term available wind data of Jos at 10m height above land. The average wind speed for Jos is 5.24m/s and rated turbine wind speed is 6.29m/s. A computer program for the design was written in JAVA programming lan... Continue Reading
Bronze immersion plating on mild steel was successfully carried out in cyanide-free solutions. The plating solutions contained cupric and stannous chloride:; (hydrated) of various proportions; the most common being 4-10 g/L CuCl2.2H20 and 8-20 g/L SnCl2.2II20. The plating took place in aqueous, non aqueous and akamu media. Non aqueous media compris... Continue Reading
This research was undertaken to investigate diurnal and seasonal variation of Medium Wave in Zaria. The effect of the seasons on signal strength and consequently of harmattan was examined. The more common analysis of evaluating several medians was used. Medians were evaluated for periods of one hour, one day, one month, one season and for the whole... Continue Reading
This study was aimed at investigating the causes of premature failures on Zaria - funtua Road linking Zaria in Kaduna state and Funtua in Katsina State. The road was asphalted in 1979. The riding quality on the road had deteriorated in the past couple of years with sections of the road developing various types of distress. Both field and laboratory... Continue Reading
The North East Arid Zone Development Programme (NEAZDP) has a high population of draught animals. A number of activities were undertaken which have not been properly documented for possible improvements of the entire NEAZDP programme. This studywas to provide detailed information on the technical performance of the traction programme. A baseline su... Continue Reading
This research work was centred on mechanical properties of zeolite-Y and ZSM-5 catalysts synthesized from locally available clays such as Kaolin, Alumina, Gambe and Pindiga respectively. Pressure absorption capacities of the synthesised zeolite catalysts and that of the supportive clays were carried out with the aid of a bourdon gauge machine. Plas... Continue Reading
The parking generating potential of hotels arc studied. A twelve (12) hours parking habit survey was carried out at the premises of twenty (20) hotels in Kano metropolis. Relevant inventories of facilities were also taken at each hotel. Results obtained were used to formulate mathematical models which showed that a linear relationship exist between... Continue Reading
A study has been conducted to determine the feasibility and benefits of waste paper recycling. It is found that a 7500 tons per year waste paper recycling plant in Kano is technically, commercially and financially feasible. Trends in manufacture and consumption of paper were studied along with the types of raw materials favoured in both developing ... Continue Reading