Application of Geoinformatics in Civil Engineering Design and Construction: A Case Study of Ile Oluji, SW Nigeria

Author:

FALOWO Olumuyiwa1ORCID

Affiliation:

1. Department of Civil Engineering Technology, Faculty of Engineering Technology, Rufus Giwa Polytechnic Owo, Ondo State, Nigeria & Federal University of Technology Akure, Ondo State Nigeria

Abstract

Subsoil engineering site condition and modeling of engineering parameters has been carried out in Ile Oluji, Ondo State, Southwestern Nigeria, using geotechnical investigation, geophysical method, borehole logging, groundwater level measurement, and laboratory studies. Findings revealed that the soils are clayey of low-high plasticity/compressibility, with AASHTO classification of A-7-6. Based on average values of cohesion (48.4 KN/m2), angle of friction (17.4°), unconfined compressive strength (186.8 KN/m2), coefficient of permeability (2.13E-06 cm/s), activity (0.48), soaked CBR (7 %), MDD/OMC (1980 kg/m3/14.8 %), plasticity index (20.2 %), group index (6 %), compression index (0.0443), coefficient of volume compressibility (0.2041 m2/KN), depth to basement rock (22.2 m), static water levels 5.5 m (in well) and 21.8 m (in borehole), the soil is unsuitable for highway subgrade, subbase, and base courses. Thus, if it is expedient to use it as subgrade soil, the minimum recommended thickness is 241 – 513 mm (avg. 395 mm). The average allowable bearing capacity of the soil for square and round foundations are 268.4 KN/m2 and 267.95 KN/m2 respectively, with average total settlement of 18.3 mm for structural pressure of 100 KN/m2. For embankment, the suitability index (1.21) of the soil suggests a fair/expanding not collapsible construction material. The rock units in the area have high compressive/shear strength, modulus of elasticity, high crushing strength, low deformability; and presumable bearing capacity of 8, 000 – 10, 000 KPa when fresh, and 5000 – 7000 KPa when partly or slightly weathered. Thus are valuable as foundation constructions, aggregate in pavement, building stone, and armourstones. The correlation coefficient of the parameters are: MDD/PI vs. CBR (0.0043), LL vs. coefficient of consolidation (0.0608), PI vs. undrained shear strength/effective overburden (0.2706), PI vs. angle of shearing (0.0117), dry density vs. angle of shearing (0.0058), suitability index vs. CBRs (0.3644), clay contents vs. PI (0.1355).

Publisher

International Journal of Environment and Geoinformatics

Subject

General Arts and Humanities

Reference67 articles.

1. AASHTO (2006). Standard Specifications for Transportation Materials and Methods of Sampling and Testing, Parts I and II, American Association of State Highway and Transportation Officials, Washington, D.C.

2. Adejumo, S.A., Oyerinde, A.O., Akeem, M.O. (2015). Integrated geophysical and geotechnical subsoil evaluation for pre-foundation study of proposed site of vocational skill and entrepreneurship center at the polytechnic, Ibadan, SW, Nigeria. Int J Sci Eng Res 6: 910-917.

3. Adewuyi, O.I., Philips, O.F. (2018). Integrated Geophysical and Geotechnical Methods for Pre-Foundation Investigations. J Geol Geophys 8: 453. doi:10.4172/2381-8719.1000453

4. Alabi, A.A., Adewale, A.O., Coker, J.O., Ogunkoya, O.A. (2017). Site Characterization for Construction Purposes at FUNAAB using Geophysical and Geotechnical Methods, RMZ – M&G, Vol. 65, pp. 089–102. DOI: 10.2478/rmzmag-2018-0007

5. Alaminiokuma, G.I., Chaanda, M.S. (2020). Geophysical Investigation of Structural Failures Using Electrical Resistivity Tomography: A Case Study of Buildings in FUPRE, Nigeria. Journal of Earth Sciences and Geotechnical Engineering, Vol.10, No.5, 2020, 15-33.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3