Strengths of geo polymer concrete by adding metakaoline

Abstract

Based0on the results obtained from this study0,the following Conclusions seems to be valid. The increase0in percentage replacement of Fly Ash with Metakaoline from 0% to 10.00% causes increase in Slump value up to 5% and beyond that slump is decreased. This0shows workability is reducing as percentage of Metakaoline increased beyond 5%. Hence, 5% replacement of Fly ash with Metakaoline is suitable from workability0point of view. The increase in percentage replacement0of Fly ash with0Metakaoline from 0% to 5% causes increase in compressive strength of concrete from 17.6MPa to 22.6MPa. Further0increase in percentage replacement of Fly ash with Metakaoline from 5% to 10% causes decrease in the0compressive strength from 22.6MPa to 18.7MPa. Hence, 5.00% replacement of Fly Ash with Metakaoline is advisable from compressive strength point of view .The increase in percentage replacement of Fly ash with Metakaoline from 0% to 5% causes increase in0Split Tensile strength of concrete from 3.72MPa to 4.68MPa. Further0increase in0percentage replacement of Fly ash with Metakaoline from 5% to 10% causes decrease in the split Tensile strength from 4.68MPa to 3.94MPa. Hence, 5.00% replacement of Fly Ash with Metakaoline is advisable from Split Tensile strength point of view. The increase in percentage replacement of Fly ash with Metakaoline from 0% to 5% causes increase in0flexural strength of concrete from 3.0 MPa to 3.36 MPa. Further increase in percentage replacement of Fly ash with Metakaoline from 5% to 10% causes decrease in the flexural strength from 3.36MPa to 3.2MPa.Hence 5.00% replacement of fly ash with Metakaoline is advisable from flexural strength point of view.Finally,it can conclude keeping in view of the workability,compressive strength,split tensile strength and flexural strength in mind,5% replacement of fly ash with Metakaolin is recommended for use in GEO POLYMER CONCRETE (GPC).