Implication of Metakaolin in Quarry Dust Concrete
initiation time of quarry dust concrete with various percentages of metakaolin have shown in Fig. 6 and Fig. 7. It is found from Fig. 6 that the time to initiate corrosion for quarry dust concrete was found to be 160 hours. Quarry dust concrete with 5%, 10%, 15% and 20% replacement of cement .