Investigation On Ferrock Based Concrete As An Environmentally-Friendly And Durable Concrete Alternative

Abstract

Concrete Is The World?�?S Most Abundant Building Material Which Is Strong And Durable. There Are, However, Some Chemical Environments Under Which The Useful Life Of Even The Best Concrete Will Be Short, The Sulfate Corrosion Being One Of The Most Frequent And Detrimental Processes, Unless Specific Measures Are Taken. As A Result, Experts Have Been Searching For More Durable, Cost-Effective And Environmentally Friendly Cement Substitutes. In This Research Paper An Attempt Has Been Made To Evaluate The Workability, Strength And Durability Properties Of Concrete Made Of Partial Replacement Of Cement With Ferrock. The Percentage Of Ferrock Adopted Is 0, 5, 10, 15 And 20%. Hence, This Study Investigated The Possibility Of Using Ferrock As Partial Replacement Of Cement In Concrete, To Produce An Environmentally Friendly, Economical, Strong And Durable Concrete Against Sulfate Attack. This Concrete Has Been Made From Iron Powder, Fly Ash, Lime Powder, Glass Powder With And Without Oxalic Acid, On Reaction With Co2 And Water Produces Iron Carbonates, Which Is The Hardened Product. In The Study An Attempt Is Made To Understand The Variation In Compressive And Flexural Strength By Replacing Up To 20 % Of Cement By Ferrock Cement With And Without Oxalic Acid And Their Workability, Water Absorption And Durability In Sodium Sulfate Solution After 28 Days Of Soaking At Room Temperature Is Examined. There Were Nine Different Sets Of Mixes Including The Control Mix Used For Investigations With Constant Water-Cement Ratio Of 0.491 And Slump Ranging Between 75-100 Mm For Concrete Having A Compressive Strength Of 25 Mpa. Concrete Containing Ferrock Based Cement With Oxalic Acid As Cement Replacement Showed High Compressive And Flexural Strength Than The Control At A Replacement Rate Of 5 And 10% After 7 And 28 Days Of Water Curing, As The Percentage Replacement Is Increased From 10 To 20% Gradual Loss In Compressive As Well As Flexural Strength Is Observed In Both Ferrock Mixes. The Durability Study Against Sulfate Attack Showed That Only 20% Replacement Using Ferrock Without Oxalic Acid Showed More Mass Loss Than The Control Concrete, The Rest Performed Well. The Presence Of Oxalic Acid Resulted In Stronger And More Durable Concrete.10% Replacement Of Cement With Ferrock Containing Oxalic Acid Can Save Up To 5.9% Cost. The Energy Used By Cement Production Is Ten Times Higher Than The Energy Used By The Production Of Ferrock And Water Used By Cement Is 45 Times Higher Than The Use Of Water By Ferrock Production Creating A Negative Balance And Resulting In Almost 21 Times Lesser Contribution To Global Warming Potential.