Abstract

As Pakistan along with the rest of the world continues to develop, demand for limited natural resources continues to increase also. This demand for resources and subsequent waste that is generated has driven the idea of sustainability towards the forefront of modern day research. To achieve this goal, new and innovative ways are being developed to recycle waste materials that otherwise would end up in landfill sites. Slag, a by-product of steel manufacturing is one such waste material. Pakistan as being a developing country does not have proper facilities to insure safe disposal and recycling of slag. Hence, new and innovative ways for recycling slag are a necessity for Pakistan to move towards technological advancement. Current study focuses to explore the feasibility of using local induction furnace slag as partial substitute of OPC (Ordinary Portland Cement) in concrete as well as to check its performance against chloride and sulphate damage. The test results showed that 15% or more slag replacement will make the concrete immune to chloride and sulphate damage. However, results also indicate that with increase in slag replacement percentage there is a significant drop in compressive, flexural and split tensile strength of concrete. Keeping in view the loss of strength, immunity against chloride and sulphate damage, reduction in cost of making concrete and sustainability benefits; 15% slag replacement has been deemed optimum replacement value.

Highlights

  • As Pakistan along with the rest of the world continues to develop, demand for limited natural resources continues to increase

  • Attempts for cement replacement with induction furnaces slag have been very limited. This is due to the fact that induction furnace slag contains higher levels of iron oxide and lower levels of silica in comparison to GGBS

  • Induction furnace slag can be used as partial cement replacement in concrete

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Summary

INTRODUCTION

Rresources have br ought th e idea of sustainability in forefront of modern day research. The potential application of these industrial by-products as partial cement or aggregate replacement in concrete depends on their mechanical and chemical properties. Pakistan Steel is the only pubic enterprise operational It contains 2 blast furnace units with a production capacity of 1.1 million tons per annum of crude steel [6]. Attempts for cement replacement with induction furnaces slag have been very limited This is due to the fact that induction furnace slag contains higher levels of iron oxide and lower levels of silica in comparison to GGBS. These factors reduce its potential of being used as cement replacement material in concrete as compared to GGBS. Current study aims to identify the benefits of partially replacing OPC content by locally available induction furnace slag in concrete

Cement
Aggregates
Steel Slag
DIFFERENT CURING MEDIUMS FOR CONCRETE TESTING
BULK DRY DENSITY
SLUMP TEST
COMPRESSIVE STRENGTH
FLEXURAL STRENGTH
SPLITTING TENSILE STRENGTH
10. COSTANALYSIS
11. SUSTAINABILITYANALYSIS
12. CONCLUSIONS
Findings
13. BENEFITS
Full Text
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