Skip to main content

Fines Content and Cohesion of Lateritic Soils: Conceptual Models | Chapter 01 | Advances in Applied Science and Technology Vol. 5

Laterite has been widely defined  as  a highly weathered material, rich  in  secondary oxides  of iron, aluminium, or both. It is void or nearly void of basic primary silicates, but it may contain large amounts of quartz and kaolinite. A distinctive feature of laterite and lateritic soils is the higher proportion of sesquioxides of iron and/or aluminium relative to the other chemical components. This study proposed conceptual models for the determination of soil cohesion based on the correlations of soil cohesion with fines  content.  This was with a  view to contributing to timely,  less laborious and cost  effective determination of cohesion of lateritic soils. Selected lateritic soil samples were subjected to laboratory analyses. The fines were separated from the coarse component of the soils after which the samples were remoulded in varying ratios (fines: coarse) from 10:90 to 100:0 in 10% increment. The samples were  then  subjected  to  an  unconsolidated-undrained  triaxial  test  to  determine  the  shear  strength parameters. Quantitative relationships between fines content and cohesion of the soil samples were developed. It was found that the cohesion of the soil samples generally increased with an increase in fines  content;  the  polynomial  relationships  gave  the  best  fitting  between  the  fines  content  and cohesion of the soil samples. From the findings of this research work, thefollowing conclusions are made  in  relation  to  the  objectives  of  the  research:  (i)  The  cohesion  of  the  studied  soil  samples generally increased with an increase in fines content; (ii) the best fitting between the fines content and cohesion of the soil samples. The results are valid within the study area, the tested materials and the procedure  outlined  in  this  paper.  It  is  recommended  to  perform  more  experiments  to  validate  the finding in this research.

Author(s) Details

DR. G. O. ADUNOYE
Lecturer at the Department of Civil Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/44/193/345-1
View Volume: https://doi.org/10.9734/bpi/aast/v5

Labels:

Comments

Post a Comment

Popular posts from this blog

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefi...
Post a Comment
Read more

Occipital Dermal Sinus Tract Causing Craniospinal Infection: A Review | Chapter 13 | New Visions in Medicine and Medical Science Vol. 4

  Dermal sinus is a rare congenital condition characterized by a pathological tract connecting the skin to deeper tissues of the central nervous system, potentially leading to severe infectious complications. It arises from a failure in the separation of ectodermal layers during early gestation. Diagnosing dermal sinus tract in newborns requires a careful physical examination, focusing on midline dimples in the occipital region associated with cutaneous abnormalities like hairy nevus or hyperpigmentation. The presence of drainage, abnormal hair distribution, or localized swelling may indicate a sinus tract. Regular examination for dimples or sinuses is recommended for infants and children with recurrent meningitis or infections. Early detection is crucial to prevent severe complications like meningitis, with Staphylococcus aureus being a common causative organism. Neuroradiological studies, including computed tomography (CT) scan and magnetic resonance imaging (MRI), with histopath...
Post a Comment
Read more

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cel...
Post a Comment
Read more