LAUTECH Journal of Civil and Environmental Studies

Journal Information
ISSN / EISSN : 2651-5628 / 2714-3988
Current Publisher: Lujosh Ventures Limited (10.36108)
Total articles ≅ 52

Latest articles in this journal

LAUTECH Journal of Civil and Environmental Studies; doi:10.36108/laujoces/

LAUTECH Journal of Civil and Environmental Studies
S.I Shaibu, O.O Morenikeji, O.O Idowu, S Medayese, C.B Ohadugha, M. S Oliver, M. Y. Jimoh
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 18-27; doi:10.36108/laujoces/0202/50(0130)

Education is the key to development in any society and it is true that the educational institutions in any given society reflect the standard of living and the attitudes towards life of that society. This study presents a spatial framework of public primary schools in Munya Local Government Area of Niger state with the specific objectives of identifying the various public primary schools in the study area, attempt a spatial mapping and distribution pattern of the schools; determine spatial equity and accessibility of pupils to the schools and finally to advance appropriate planning policy measures to resolve the identified problems. The main sources of data for the study are through the primary and secondary sources. The location quotient, distributional equity, Gini co – efficient and P – median techniques were used for data analysis. It is observed that primary school’s provision has surpassed the maximum required in the area. It is therefore recommended that there should be be guided in the sitting of future schools, while maintenance of the existing ones should be pursued to sustain the likely future growth in school’s enrolment. Furthermore, the establishment of future public schools should be based on threshold population in the study area.
J. Ochepo, I. M. Kanyi
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 60-72; doi:10.36108/laujoces/0202/50(0170)

A reddish-brown lateritic soil obtained from Zaria; Nigeria was treated with up to 2.5% nano-silica. Consolidation properties (i.e. Pre-consolidation pressure, compression index, coefficient of volume compressibility and coefficient of consolidation) of treated specimens were assessed using one dimensional consolidation test. The permeability property of treated soil was also evaluated. The results obtained showed that the pre-consolidation pressure generally increased with increasing percentage of nano-silica content and curing time. The compression index (Cc) increased steadily with higher percentage of nano-silica contents up to 2.5% treatment for 7 and 14 days of curing, but decreased after 28 days curing period. The recompression index (Cr) on the other hand generally increased with increase percentage of nano-silica content and curing period. The coefficient of volume compressibility (Mv) did not follow any definite trend, but at 2.5% nano-silica content, the Mv decreased for all curing periods considered. The coefficient of consolidation (Cv) also, did not give a definite trend with increase in nano-silica content, suggesting that increasing the amount of nano-silica content in the soil has little or no impact on the time rate of settlement. The coefficient of permeability (k) decreased as the soil was treated with nano-silica especially beyond loading pressure of 40kN/m2. This study showed that nano-silica (up to 2.5%) can be used to stabilize lateritic soil to improve its consolidation properties.
S.O Odeyemi, M.A Anifowose, R. Abdulwahab, W.O. Oduoye
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 131-145; doi:10.36108/laujoces/0202/50(0131)

Consideration on High Performance Concrete (HPC) has risen drastically because of the requirement for application of concrete volume with high strengths for construction work. In this study, the mechanical properties of HPC with Guinea Corn Husk Ash (GCHA) as supplement of cement was investigated. The proportioning of Ordinary Portland Cement (OPC) with GCHA is from 0 - 20%. Design of the concrete mix was done to achieve a characteristic strength of 50 N/mm². The chemical composition of the GCHA was determined using X-ray Fluorescence (XRF) Slump and compacting factor of fresh HPC were determined. Concrete cubes (for compressive strength), beams (for flexural strength) and cylinder (for split tensile strength) samples were cast and cured in water for 7 - 56 days. Density, compressive, flexural, and split tensile strengths were determined on the hardened HPC and were further examined using SEM analysis. Compressive strength at 56 days showed that control and inclusion of 5% GCHA gave strength 56.85 N/mm2 and 57.76 N/mm2, respectively above the designed target strength of 56.56 N/mm2 while inclusion of 10% GCHA met characteristics strength of 50 N/mm2. However, 5% GCHA-concrete had the highest flexural and split tensile strengths at 56 days of curing. Integration of 10% GCHA as replacement of OPC would produce concrete of higher strengths compared to conventional HPC at longer curing age. Based on the SEM results, uniform distribution of filler was obtained at 10% GCHA inclusion. At higher percentage of GCHA, resulting composite presents multiple and distinct grains with possible weak interfaces.
A. C. Apata, Solomon I. Adedokun
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 146-153; doi:10.36108/laujoces/0202/50(0141)

In this study, the geochemical analysis of the subgrade at different locations of Ilaro-Papalanto highway was conducted using Atomic Absorption Spectrometry (AAS) and X-Ray Diffractometry (XRD). The predominant oxides present in both soil samples are Silicon Oxide (40% - 45%) and Aluminium Oxide (31% - 34%), and the average silica content of Ilaro and Papalanto are 45.71% and 40.71% respectively, which implies that Ilaro soil sample is more chemically inert and structurally stable than Papalanto soil samples. The average sesquioxide content of Papalanto (36.27%) is higher than that of Ilaro (32.87%), while the silica sesquioxide ratio (SSR) of Papalanto (1.12%) is less than that of Ilaro (1.39%), therefore both soil samples are in advanced stage of weathering but Papalanto soil is more lateritic than Ilaro. Geochemical analysis using XRD indicated the presence of three clay minerals (Kaolinite, Illite and traces of Montmorrrilonite) and one major non-clay mineral, Quartz. The average proportion of Kaolinite in the soil samples are 9% (Ilaro) and 28% (Papalanto), but the average values of Quartz are 62% and 69% for Ilaro and Papalanto, respectively. The higher proportion of sesquioxide and Kaolinite from Papalanto samples is an indication of more failures observed in the region.
Arinkoola A. O, K. K Salam, T.O Salawudeen, G.O Abidemi, J.O Hamed, M.O Jimoh, O.A. Olufayo, Y.M Aladeitan
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 114-130; doi:10.36108/laujoces/0202/50(0121)

Exploitation of Nigerian bentonitic clay deposit will offer economic advantage in terms of utilization for drilling purpose and prevent money spent on importation. Clay used for this analysis was beneficiated using sodium Carbonate (Na2CO3) and the change in the elemental composition of the raw clay sample and treated clay with was estimated using X-ray fluorescence spectroscopy (XRF). The treated clay and locally sourced bio-materials were added to the formulation of drilling fluid using Reduced Central Composite Design (RCCD). The fluid loss and cake thickness of prepared drilling fluid were determined using filter loss test kit. The result of the investigation show that the maximum recorded fluid loss was 14.4 ml/30mins at 100 psi while cake thickness values improved with addition of the bio-materials to the drilling fluid formulation when compared with the standard values.
M Umar, H. M. Alhassan
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 97-104; doi:10.36108/laujoces/0202/50(0101)

Two laterites samples known for their deficiency in road construction were used to assess the efficacy of Class C fly ash in improving their engineering properties. The two samples were taken from Danbare and Dausayi localities within Kano Metropolis and the fly ash was sourced from the Nigerian Coal Corporation, Enugu. Preliminary tests on the two samples confirmed their deficiency for use in road construction. The processed fly ash was blended with the laterite samples at 0, 3, 6, 9, 12, 15 and 18%. Hence, the treated soil samples were tested for plasticity, compaction and strength properties. Results obtained revealed reduction in plasticity properties as the fly ash contents increased. Similarly, Maximum Dry Density (MDD) decreased as the fly ash content increased while the Optimum Moisture Content (OMC) of the treated soils increased for the two samples. Peak CBR values of 16 and 35% were obtained at 9 and 15% fly ash contents for samples 1 and 2, respectively. The unconfined compression tests showed considerable improvement in strength properties higher than the values of the natural soils. The peak 7 days strength of 630 and 1410 kN/m2 were observed at 12% and 15% fly ash content for samples 1 and 2, respectively.
Adamu Sanusi, A Ezra
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 105-113; doi:10.36108/laujoces/0202/50(0111)

Airports plays an important role in shaping the economic activities of communities of which they serve due to the fact that they are among the largest public facilities in the world. The availability of air transportation and its associated airport infrastructure constitute a significant stimulus to economic and social development for the communities located in neighboring areas of the airports. This study examines the impact of Yola international airport on socio-economic activities of Jimeta residents. The study used primary data which were generated from the respondents through the administration of 300 copies of structured questionnaire. The combination of stratified and systematic random sampling was used to administer the questionnaire. Frequency counts and Student T-test were used to analyze the data on the socio-economic activities before and after the upgrade of the airport. The study revealed that, Yola International airport influenced the growth of socio-economic activities in the area by 62.7%, increasing patronage of customers 34.7% as well transport services 39.0%. The study further revealed that there is a significant difference at p
E. A Oluwasola, A Afolayan, I. O. Ameen, E. O. Adeoye
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 11-17; doi:10.36108/laujoces/0202/50(0120)

High cost of building construction in the country has remained a major source of concern to successive government in the nation. Building materials constitute approximately 60-70% of the building cost. In view of this, the need for alternate building materials is imminent. This research work focuses on assessment of effect of different curing methods on the compressive strength of palm kernel shell aggregate concrete. All materials were collected at Ede, Osun state. The stages involved in this research are material collection, batching and mixing, casting of concrete cubes, slump test, curing, and compressive strength test. The tests carried out were x-ray fluorescence, slump test and compressive strength. Four different curing methods were used; water, air, salt water, and detergent to cure concrete with two mixing ratios of 1:2:4 and 1:1½:3. It can be observed that the Palm Kernel Shell (PKS) contains mainly Iron (Fe), Potassium (K), Calcium (Ca), Manganese (Mn) elements and other impurities. From the slump test results, it can be deduced that 1:1½:3 gave a better slump as expected. The compressive strength of cube ranges from 2.244 to 3.852N/mm2 Based on the results, the curing methods has a significant effect on the compressive strength of the PKS aggregate concrete.
O. S Oladejo, O.O. Elemile, A. O. Abiola, A. A Olanipekun
LAUTECH Journal of Civil and Environmental Studies, Volume 5, pp 53-59; doi:10.36108/laujoces/0202/50(0160)

Most of the increasing quantity of wastes in institutions of higher learning, are disposed of through open dumping. The decomposition of these wastes has been identified to be a source of methane emissions. This study estimated methane emissions from the open dumpsite in Landmark University. An exploratory study design was adopted. The study involved physical characterization of solid wastes at the Landmark University for a period of three months and the estimation of methane emission potentials of the dumpsite for the years 2011 to 2031 using IPCC Default Method (DM) and the Landfill Gas Emission (LandGEM) Model Version 3.02.The study revealed the percentage composition of waste to be 48, 16, 12, 10, 5 and 3% for plastics, garden trimmings, paper, metal, food waste and textile respectively. The maximum methane emission is 11.65 and 2.48 Mg/year for DM and LandGEM respectively in the year 2021 while the methane emissions will decline to 7.06 and 1.50 Mg/year for DM and LandGEM respectively in the year 2031. The contribution of methane emissions in the University is still little as reflected in the values of 11.65 and 2.48 Mg/year although there is a tendency to increase as population increases. Further studies should be carried out to provide methane specific properties of the solid waste generated in Omu-Aran in order to build an inventory of methane emission parameters.
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