Table of Contents

An Overview of Scoria Lightweight Aggregate Concrete

Sani M. Bida, Musa Muhammad, Aliyu A. Vulegbo, Adamu Yunusa                                       1 – 7

Simple Procedure for Calculating Shear Rate in the Reservoir

Akpoturi P.E                                                                                                                            8 – 11

Quality of Fine Aggregates used for Masonry Works in Kaduna Metropolis

Bala A.B,. Abimiku J. and Pogu J.H.                                                                                         12 – 18

Performance of Concrete Made using Palm Kernel Shells as a Partial

Replacement for Coarse Aggregate

Alhassan, A. Yunusa, Ekere, J. T. and Ibrahim, A. Danjuma                                                     19 – 25

An Investigation into the Water Quality Parametres of Water from Bagwai

Dam as a Quality Control Measure for Domestic and Industrial Uses

Yaro, M. N.                                                                                                                               26 – 34

AN INVESTIGATION INTO THE WATER QUALITY PARAMETRES OF WATER FROM BAGWAI DAM AS A QUALITY CONTROL MEASURE FOR DOMESTIC AND INDUSTRIAL USES

Yaro, M. N.

Department of Chemistry

Federal University, P.M.B 7156, Dutse, Jigawa State – Nigeria

Email: yaro_n@yahoo.com

ABSTRACT: The sample (water) was collected from Bagwai Dam.  The concentrations of the ionic products ([H⁺] and [OH^–]), the pOH, pH and dissociation constant (Kw) of the water sample were evaluated using various equations.  Some major water quality parameters (i.e temperature, pH, total dissolved solids (TDS), total hardness (TH), total acidity and total alkalinity) of the water sample were investigated using various standard methods.  The results (i.e the water quality parameters of the water sample) were compared with the other findings and standard water quality parametres recommended by WHO/SON. The work revealed that the values of [OH^–],  [H⁺], pOH and Kw of the water were 11.00 X 10^-3 mol/dm³, 9.12 X 10^-13 mol/dm³,  1.96 and 1.0032 X 10^-14 (mol/dm³)², respectively; the temperature,   pH, TDS, TH, total acidity and total alkalinity of the water were 28.60^oC, 12.04, 4.20 X 10² mg/dm³, 0.11 X 10² mg/dm³, 565.44X10^-10 mg/dm² and 11.00 X 10² mg/dm³, respectively; the pH and the total alkalinity of the water were , respectively higher than the allowable pH  range (6.50-8.00) and maximum allowable total alkalinity (1.00 X 10² mg/dm³) recommended by WHO/SON for drinking water; the TDS of the water was below the maximum  allowable TDS (5.00 X 10²mg/dm³) recommended by WHO/SON for drinking water and the TH of the water was within the TH range (0.00-60.00 mg/dm³) for soft water as reported by Tyson Harrison (1990). 

PERFORMANCE OF CONCRETE MADE USING PALM KERNEL SHELLS AS A PARTIAL REPLACEMENT FOR COARSE AGGREGATE

ALHASSAN, A. YUNUSA, EKERE, J. T. And IBRAHIM, A. DANJUMA

Department of Civil Engineering

Federal Polytechnic Idah, P.M.B. 1037, Idah, Nigeria

E-mail: alhassanay@gmail.com

ABSTRACT: The high cost of conventional construction material is a dominating factor affecting housing system around the world. This has necessitated work into alternative materials in the construction industry. This study presents results of an investigation into the potentials of using Palm Kernel Shells (PKS) in concrete production as partial replacement for coarse aggregate. Concretes cubes were cast using two concrete mixtures (0.5 and 0.7 w/c ratio) with PKS used to replace the coarse aggregate content in the mixtures at a percentage of 0%, 10%, 20% and 30%. The compressive strength and porosity of the cast concrete cubes were evaluated at 7, 14 and 28 days. It was observed that the compressive strength decreases at a rate of 3.3 Nmm^-2, 3.6 Nmm^-2 and 4.0 Nmm^-2 at 28 days for 0.5 w/c mix and 3.1Nmm^-2, 2.9Nmm^-2, and 3.3Nmm^-2at 28days for 0.7w/c mix per unit percentage increase in PKS content. The following results were obtained for the porosity test at 28 days; 0.24, 0.28 and 0.39 for 0.5 w/c ratio and 0.15, 0.17 and 0.21 for 0.7 w/c ratio. It was observed that, while strength decreases, porosity increases per unit percentage increase in PKS content. The density of concrete cubes decreases as the curing age and PKS addition increases. It was concluded that PKS can be used to replace coarse aggregate up to 20% before drastic reduction in property become noticeable.

QUALITY OF FINE AGGREGATES USED FOR MASONRY WORKS IN KADUNA

METROPOLIS

BALA A.B,. ABIMIKU J. AND POGU J.H.

Department of Civil Engineering,

Kaduna Polytechnic, Kaduna State.

E-mail: abdullahibala50@gmail.com, joshpogu@yahoo.co.uk, ubbe.eggon@yahoo.com

ABSTRACT: This study investigates the engineering properties of fine aggregates which are used in masonry works in Kaduna metropolis. Five samples of fine aggregates used in this study were obtained from five different locations and transported to the Material Laboratory of Civil Engineering Department, Kaduna Polytechnic, Kaduna, for experimentation. Tests carried out on the fine aggregate samples include specific gravity, sieve analysis, bulk density, silt content and mortar cube compressive strengths. Test results revealed that the specific gravity of the samples falls between 2.59 and 2.70. The bulk density varies from 1413.46 to 1486.5g/m³and silt content was found to be 0.67 to 0.97%. From the result of the sieve analysis of the sand samples, the fineness modulus ranges from 3.89 to 3.97. It is known that the fineness modulus of aggregates used in building construction usually varies between 2.1 and 3.5. The mortar cube strength after curing for three days varies between 19.75 N/mm² for sample E, 20.8N/mm² for sample C, 21.57N/mm² for sample D, 22.95N/mm² and 23.78N/mm² for samples B and A respectively.  

SIMPLE PROCEDURE FOR CALCULATING SHEAR RATE IN THE RESERVOIR

AKPOTURI P.E

Department of Petroleum Engineering

Delta State University, Abcraka, Oleh Campus

Email: petersakpoturi1212@gmail.com

ABSTRACT: In an enhanced oil recovery process (EOR), the sweep efficiency is dependent on the mobility ratio. It is desirable to have a displacing fluid with a lower mobility than the displaced fluid for higher recovery efficiency. In an EOR process utilizing polymers, the shear rate in the reservoir is required for determination of the mobility ratio. This paper presents a formula for estimating the shear rate in the reservoir.

AN OVERVIEW OF SCORIA LIGHTWEIGHT AGGREGATE CONCRETE

Sani M. Bida¹, Musa Muhammad¹, Aliyu A. Vulegbo¹, Adamu Yunusa²

¹Department of Civil Engineering, School of Engineering Technology, Federal Polytechnic Bida

¹Department of Quantity Surveying, School of Environmental Studies, Federal Polytechnic Bida

E-mail: informsani@yahoo.com

ABSTRACT: Generally, the use of LWA in concrete lowers its density and therefore reduces the overall dead weight on the entire structure resulting to lower cost of the structure. This paper is an overview of the performance of scoria as aggregate in concrete and behaviour variety of different additives in the composite in an effort to improve its properties. The performance of scoria aggregate in concrete was found to be highly appreciable and could be improved by controlling the water content, pre-soaking, silica fume and fly ash.