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Stabilization of lateritic soil with blast furnace slag

Stabilization of lateritic soil with blast furnace slag  

M.A. Mojeed1, R.A. Taiwo2,*, A.H. Adegoke3

HIGHLIGHTS

  • Lateritic soil is usually poorly graded and needs to be stabilized.
  • Samples were mixed with blast furnace slag with varying percentages of 0, 2, 4, 6, 8 and 10%.
  • Samples were tested for compaction, undrained compressive & shear strength, and CBR.
  • The undrained compressive strength improves at 8% and 2% addition of blast furnace slag to samples.
  • Blast furnace slag is a good soil stabilizer.

ABSTRACT

Lateritic soil is a group of extremely weathered soil. The soil is formed by the concentration of hydrated oxides of iron and aluminum. Most of the lateritic soil has considerable high compaction densities. However, under moisture conditions and adverse traffic, the lateritic soil performs poorly. Thus, such behavior of soil can lead to great damage of engineered structures and therefore it is important to treat the soil in order to be useful for engineering purposes. The aim of this research is to evaluate the engineering properties of lateritic soil that is stabilized with blast furnace slag. The lateritic soil was collected from a proposed site for the construction of an indoor sports hall at the Obanla campus of the Federal University of Technology, Akure located in the western part of Nigeria. Two samples (Samples A and B) were collected at depth 0.7 -1 m from different locations. The samples were mixed with blast furnace slag with varying percentages of 0, 2, 4, 6, 8 and 10% and were tested for compaction, undrained compressive & shear strength, and California bearing ratio (CBR). All tests were performed in accordance to the British Standards (BS 1377). The interpretation of the results shows that Sample A gives optimum engineering performance in terms of Atterberg limit, compaction and CBR when 6% of the blast furnace is added to it. Furthermore, Sample B gives optimum engineering properties (in terms of Atterberg limit, compaction and CBR) when 8% of blast furnace slag is added to it. However, the undrained compressive strength improves at 8% and 2% addition of blast furnace slag to Samples A and B respectively.

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Mojeed MA, Taiwo RA, Adegoke AH. Stabilization of lateritic soil with blast furnace slag. Journal of Advanced Civil Engineering Practice and Research 2020;10:4-9.

To link this article: http://ababilpub.com/download/jacepr10-2/

Challenges of waste management in densely populated countries under COVID-19 pandemic

Challenges of waste management in densely populated countries under COVID-19 pandemic  

S. Shams

Solid waste management (SWM) has been a major concern in developing countries due to lack of adequate funding, manpower and equipment. Economic development and urbanization, improved lifestyle, and life expectancy of residents of city play a key role in increasing the quantity, complexity, and nature of municipal solid waste [1]. The issues of waste management are further challenging with widespread transmission of corona virus disease 2019 (COVID-19) particularly in densely populated countries like Brazil, India, Pakistan, Bangladesh, Mexico and, Indonesia where the number of cases is increasing at an alarming rate. Amidst this global pandemic, additional volume of hazardous waste (resulting from PPEs like – hand gloves, face masks, apron, tissues) mixed with solid waste possesses a serious health threat to the waste pickers/workers…

© 2020 Ababil Publishers. All rights reserved.

To cite this article: Shams S. Challenges of waste management in densely populated countries under COVID-19 pandemic. Journal of Advanced Civil Engineering Practice and Research 2020;10:1-3.

To link this article: http://ababilpub.com/download/jacepr10-1/