1.0                                               INTRODUCTION

Soil is the cheapest and the most widely used material in civil engineering project as foundation material either in its natural or improved form. It is highly heterogeneous and an isotopic in nature and existing with different engineering properties which can be influenced to some extend by the presence of sodium salts under the influences of water (Olawale, 2013).

       The properties of soil as an engineering material depend on its surface electric charges, chemical composition, shape and size. The chemical composition influences to exhibit enormous change in the engineering properties especially in soil with high content of clay materials (Olawale, 2013).

Lateritic soil is one of the commonest materials that are widely used in the construction of civil engineering infrastructures, such earth dams, covers and pavement is constructed in layers in Nigeria, and surfacing. The first three layers are mostly constructed using laterite soil depending on the expected traffic volume and intensity suitability on the soil in terms of specification (Agbode and Osunolalo and FMN, 1997). 

Transportation geo-environmental is a new emerging area that is interdisciplinary in nature. It cut across transportation, geotechnical and environment engineering, and aim at analyzing, predicting and solving problem of soil that are affected by environmental factors (Olawale, 2013).

The study of the effects of soluble salts in soil found out that chloride, sulphate and nirate of sodium increases the permeability of the soil, since there is clear indication that permeability; one of the engineering properties of soil is affected by the presented of the salts, it is pertinent to investigate their effect on the wider properties of the soil (Olawole, 2013).

The investigation made on the effect of sodium sulphate water on the mixed with clay soil, the result indicate there was increase in optimum moisture content and decrease in maximum dry density (Sherwood, 1992)

The effect of sulphate salt on engineering properties of lateritic soil was examined and the finding shows the maximum dry density and specific gravity decrease with tine while optimum moisture content increase with time (Sherwood, 1992)

The research is aimed at evaluating the effect of salt contamination on the engineering properties of soil using hydrated sodium (ii) tetraoxosulphate (iv) salt (NaSO4).


The effect of sodium sulphate contamination on engineering properties of lateritic soil causes failure to  highway pavement in existing roads and make highway foundation materials to be unsuiltable for highway construction.


⦁ Access the actual performance of lateritic soil when contaminated with sodium (ii) tetraoxosulphate (iv) salt (NaSO4)

⦁ To identify and appraise NaSO4 as a contaminant on lateritic soil.

⦁ To show the effect of the NaSO4 on various engineering properties of lateritic soil.

⦁ To evaluate the strength of lateritic soil when contaminated sodium (ii) tetraoxosulphate (iv) salt (NaSO4) and when free from the contaminant.


The effect of sulphate salt contamination on lateritic soil is highly needed in order to determine its effect on the engineering properties of lateritic soil which is the most commonest material used in highway pavement.


The research focused on the effect of sodium(ii)tetraoxosulphate(iv)salt as a contaminant on lateritic soil. The sample will be collected from a burrow pit and divided into four portions.

The first sample will be without NaSO4 while the remaining three portions will be contaminated in varied proportion.

The specimen will be subjected to the following tests:

⦁ Particles size analysis (sieve analysis)

⦁ Atterberg’s limits

⦁ Compaction

⦁ Califonia Bearing Ration(CBR)


⦁ Procurement of material NaSO4)

⦁ Collection of the soil sample from a burrow pit 

⦁ Mixing of the soil sample and NaSO4) as specimen; a portion will not be mixed which will serve as control for other mixed with contaminant.

⦁ Carrying out of laboratory tests which includes 

⦁ Particles size analysis

⦁ Atterberg’s limits 

⦁ British standard compaction

⦁ Califonia Bearing Ratio(CBR)

⦁ Calculation and analysis of the result.



RESEARCHWAP.COM is an online repository for free project topics and research materials, articles and custom writing of research works. We’re an online resource centre that provides a vast database for students to access numerous research project topics and materials. guides and assist Postgraduate, Undergraduate and Final Year Students with well researched and quality project topics, topic ideas, research guides and project materials. We’re reliable and trustworthy, and we really understand what is called “time factor”, that is why we’ve simplified the process so that students can get their research projects ready on time. Our platform provides more educational services, such as hiring a writer, research analysis, and software for computer science research and we also seriously adhere to a timely delivery.


Please feel free to carefully review some written and captured responses from our satisfied clients.

  • "Exceptionally outstanding. Highly recommend for all who wish to have effective and excellent project defence. Easily Accessable, Affordable, Effective and effective."

    Debby Henry George, Massachusetts Institute of Technology (MIT), Cambridge, USA.
  • "I saw this website on facebook page and I did not even bother since I was in a hurry to complete my project. But I am totally amazed that when I visited the website and saw the topic I was looking for and I decided to give a try and now I have received it within an hour after ordering the material. Am grateful guys!"

    Hilary Yusuf, United States International University Africa, Nairobi, Kenya.
  • " is a website I recommend to all student and researchers within and outside the country. The web owners are doing great job and I appreciate them for that. Once again, thank you very much "" and God bless you and your business! ."

    Debby Henry George, Massachusetts Institute of Technology (MIT), Cambridge, USA.
  • "I love what you guys are doing, your material guided me well through my research. Thank you for helping me achieve academic success."

    Sampson, University of Nigeria, Nsukka.
  • " is God-sent! I got good grades in my seminar and project with the help of your service, thank you soooooo much."

    Cynthia, Akwa Ibom State University .
  • "Great User Experience, Nice flows and Superb functionalities.The app is indeed a great tech innovation for greasing the wheels of final year, research and other pedagogical related project works. A trial would definitely convince you."

    Lamilare Valentine, Kwame Nkrumah University, Kumasi, Ghana.
  • "Sorry, it was in my spam folder all along, I should have looked it up properly first. Please keep up the good work, your team is quite commited. Am grateful...I will certainly refer my friends too."

    Elizabeth, Obafemi Awolowo University
  • "Am happy the defense went well, thanks to your articles. I may not be able to express how grateful I am for all your assistance, but on my honour, I owe you guys a good number of referrals. Thank you once again."

    Ali Olanrewaju, Lagos State University.
  • "My Dear Researchwap, initially I never believed one can actually do honest business transactions with Nigerians online until i stumbled into your website. You have broken a new legacy of record as far as am concerned. Keep up the good work!"

    Willie Ekereobong, University of Port Harcourt.
  • "WOW, SO IT'S TRUE??!! I can't believe I got this quality work for just 3k...I thought it was scam ooo. I wouldn't mind if it goes for over 5k, its worth it. Thank you!"

    Theressa, Igbinedion University.
  • "I did not see my project topic on your website so I decided to call your customer care number, the attention I got was epic! I got help from the beginning to the end of my project in just 3 days, they even taught me how to defend my project and I got a 'B' at the end. Thank you so much, infact, I owe my graduating well today to you guys...."

    Joseph, Abia state Polytechnic.
  • "My friend told me about ResearchWap website, I doubted her until I saw her receive her full project in less than 15 miniutes, I tried mine too and got it same, right now, am telling everyone in my school about, no one has to suffer any more writing their project. Thank you for making life easy for me and my fellow students... Keep up the good work"

    Christiana, Landmark University .
  • "I wish I knew you guys when I wrote my first degree project, it took so much time and effort then. Now, with just a click of a button, I got my complete project in less than 15 minutes. You guys are too amazing!."

    Musa, Federal University of Technology Minna
  • "I was scared at first when I saw your website but I decided to risk my last 3k and surprisingly I got my complete project in my email box instantly. This is so nice!!!."

    Ali Obafemi, Ibrahim Badamasi Babangida University, Niger State.
  • To contribute to our success story, send us a feedback or please kindly call 2348037664978.
    Then your comment and contact will be published here also with your consent.

    Thank you for choosing