Jyoti S.Trivedi, Assistant Professor, M-Tech(CPM) CEPT University, Faculty of Technology, Navrangpura,Ahmedabad,
Dr.Rakesh Kumar, Associate Professor, Civil Engineering Department, SVNIT Surat.

Sub-grade soil stabilization is one of the primary and major processes in the construction of any highway. The aim of this research paper is to formulate a model to predict variation in the values of CBR of the Sub-grade Soil with the addition of specific proportions of Fly Ash and Copper Slag. Tests were performed on combination of soil with fine copper slag coarse copper slag and fly ash the input values for this study were those which directly affect the CBR values i.e., directly proportional to CBR. It includes Liquid Limit (LL), Plasticity Index (PI), Optimum Moisture Content (OMC) & Fraction of Fly Ash and copper slag. This model will help all types of agencies involved in road construction like NHAI, Infrastructure Developers and Construction Contracting Organizations to pre-determine the soil stabilization achieved due to fly ash and copper slag for a particular type of sub-grade soil.

Introduction

Emerging trend of using waste material in soil stabilizing or soil strengthening is being operational all over the world in the present days. The main reason behind this trend is the excessive production of waste like fly ash, plastics, rice husk ash (RHA) which is not only hazardous but also creating deposition/disposal problems. Using some of these waste materials in construction practice will reduce the problem to a great extent. (J. S.Trivedi, S. Nair, C. Iyyunni 2012)

The history of stabilization of soil has a long background with hundreds of research results. Several research results with waste materials such as fly ash, plastics; rice husk ash has also been published with their benefits. Some of the recent relevant research work has been briefly mentioned here. Alhassan (2008) has shown the potential benefits of using RHA with the natural soil. It has been reported that both CBR as well as unconfined compression values have increased with the addition of RHA with natural soil. Also the OMC (Optimum Moisture Content) increase while MDD (Maximum Dry Density) has decreased due to RHA mixed with natural soil. Brooks (2009) reported the soil stabilization with RHA and fly ash mixed with natural soil. This study also showed improvement in CBR values and unconfined compression strength. The effect of marble dust with RHA in a mix with expansive soil has been studied by Sabat and Nanda (2011). It has been seen that with addition of RHA and marble dust with soil, the MDD deceases and OMC increases. Also the CBR and UCS values increase substantially due to adding these two with the natural soil. The study of Yulianto and Mochtar (2010) shows the effectiveness of using rice husk ash (RHA) and lime as a pozzolanic material with natural soil. The results showed good improvement on physical and engineering behavior of the stabilized peat soil. The values of wet unit weight and specific gravity increase while the water content and void ratio decrease with the increase of curing period. The increment of curing period also altered its engineering behavior that is increasing the soil strength and reducing its compressibility.

In this study the objectives are; Evaluation of Compressive Strength (CBR) of Copper Slag with flyash Stabilized sub-Grade Soil. To identify factors affecting Compressive Strength (CBR) of Stabilized Sub-Grade Soil containing Copper slag and fly ash and Sensitivity Analysis of Sub-Grade Soil CBR.

This section of the article is only available for our subscribers. Please click here to subscribe to a subscription plan to view this part of the article.

Click Here
To Know More or to Contact the Manufacturer
Please let us know your name.
Invalid Input
Please let us know your Designation.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.
Our other Value-Added Services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Invalid Input
Invalid Input
Invalid Input
Brijesh Ashokbhai Wala, Engineer, National Highways and Infrastructure Development Corporation Limited (NHIDCL), presents the vagaries and challenges in underground construction, with case studies of projects constructed or planned

Read more ...

Anirban Sen, Business Line Manager – Underground Division, Epiroc Mining (India), explores the technologies, methods and benefits of modern intelligent face drilling equipment, the reasoning behind selection of ‘smarter’ face drills

Read more ...

This case study of the Sewa H.E. Project (120MW) in the Kathua district of Jammu and Kashmir, covers the planning process and various construction features of a 10.02km long, 3.3m diameter horseshoe shaped concrete lined tunnel

Read more ...

Strabag AG implements complex construction projects, particularly in tunneling and infrastructure development, and is represented in around 30 countries worldwide. It has been active in the fields of building construction, civil

Read more ...

Construction is underway on a tunnel as part of a bypass to relieve traffic for communities in Toggenburg, Switzerland. For Doka’s formwork experts, keeping in view the conditions of this project, their new, rentable tunnel system

Read more ...

On 22nd September 2021, hard rock/slurry TBM Urja (DZ670) manufactured by China Railway Construction Heavy Industry Cooperation Limited (CRCHI) achieved a breakthrough from the Cantonment Station to the Shivaj Nagar Station

Read more ...

Hard Rock Tunnel Boring Machine (TBM) is the first choice for the construction of hard rock tunnels because it is a fast, safe, and environmental-friendly construction method. As overburden increases, the ground stress of

Read more ...

The Mumbai-Nagpur Expressway is delayed until 2022 due to Covid-19. In the meantime, a machine with remarkable operational reliability was specially flown in from the supplier in Germany to help speed up the project.

Read more ...

US Tunnel Boring Equipment manufacturer, The Robbins Company, will continue to make owning and operation of its TBMs cost-effective for Indian contractors. It will also explore newer vistas of engagement with

Read more ...

Geo Constech Druc Svelta Resin Capsules
Geo Constech (GCPL), one of the leading solution providers of material and technology, introduces Druc-Svelta, Druc-Si’ment Cap, Druc-Stone, Druc-Colata 41, and Druc-Tyrocrete. With an objective

Read more ...

Horizontal Bores
Trenchless construction is a method of laying services under the ground without disturbing the surface structures. The imported underground horizontal drilling machines are available

Read more ...

Mobile Sinking Winch
The "DEEP SHAFT COAL MINE" consists of essentially two vertical shafts, one to hoist men and materials, and the other for winding coal from deeper seems."MINE SHAFT" surface structures

Read more ...

Slag Crushed in Crusher
For the last 20 years, the use of by products of various origins in the production of concrete has become an increasingly widespread practice in the world. The main advantages are all the elimination of scraps

Read more ...

Building Resistant to Earthquake
Studies on hidden beams have been carried by various researchers. Its use for high rise buildings with raft foundation is of very useful. However, its use for low rise buildings may not be effective to a considerable

Read more ...

Sustainability Cement Perspective
The cement industry is one of two primary industrial producers of carbon dioxide (CO2), creating up to 5% of worldwide man-made emissions of this gas, of which 50% is from the chemical process

Read more ...

World Trade Centre Twin Tower
The failure and collapse of civil engineering structures in general and buildings in particular has become a very common phenomenon in last few years. This paper highlights the new reasons of failure

Read more ...

Polluting Cement
By the end of the Nineteenth century, the British rulers had imported 'Cement' to India and commenced discouraging the method of using freshly ground lime for masonry construction that was in vogue

Read more ...

Volvo Trucks Safety Systems
Since 1927, traffic safety has always been one of Volvo Trucks' core values and the company is currently well to the fore when it comes to safety development. Tiredness alerts, lane change assistance and help

Read more ...

Cement based construction industry plays a vital role in infrastructure development of a country. Cement concrete is the backbone material of construction industry. Water plays an important role in the production

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.