CEE Oct-Dec 2002

\\ ith sec and cover concrete is tksi~ncd at 70mm, the tim e to 111itiiltc corrosion of the steel bars in conc rete w ill be I SO yea rs. T he uti lisation of sec to ensure long– term durability was confirmed l'rom this study. Co11rtesv : lnJorwno ( 'ement Limited. :!(r. Vordhmon Spl'Cimcn Diffusion Co-cf1ic ient T ime to luitiate corrosion (yenrs) (nnn 2 'ycar) OPC - T - 45 SCA - r 45 SCB - T 45 SCC-T 45 FACI3- T 45 ore- T 55 SCA-T - 55 SCB - T - 55 sec-T 55 FACL3- T 55 [mail · C/wnzhers, Sec/or 17. floshi. Afumbai. Tel: 022-7896004; Fax: 022- '896020; . Iew·oshur!a'i ndorwno. co. in 75 16 12 8 15 165 ;; -- 19 II 68 Cover Depth 20 111111 40mm 70mm 2 7 ;; 6 26 79 8 ..,., _,_ 98 12 -+9 150 5 21 65 I 3 9 4 15 -+8 5 18 58 C) 35 109 I 4 14 69