Effect of Metakaolin and Slag blended Cement on Corrosion Behaviour of Concrete

2nd International Conference on Civil Engineering and Materials Science

Borade, Anita N.^1 ; Kondraivendhan, B.^1

Applied Mechanics Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat

395007, India^1

关键词: Blended cement;    Concrete specimens;    Corrosion behaviour;    Half-cell potential;    Ordinary Portland cement;    Portland slag cements;    Sodium chloride solution;    Water-to-binder ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/216/1/012022/pdf
DOI  :  10.1088/1757-899X/216/1/012022

来源: IOP

【 摘 要 】

The present paper is aimed to investigate the influence of Metakaolin (MK) and Portland slag Cement (PSC) on corrosion behaviour of concrete. For this purpose, Ordinary Portland Cement (OPC) was replaced by 15% MK by weight and readymade available PSC were used. The standard concrete specimens were prepared for both compressive strength and half- cell potential measurement. For the aforesaid experiments, the specimens were cast with varying water to binder ratios (w/b) such as 0.45, 0.5 and 0.55 and exposed to 0%, 3%, 5% and 7.5% of sodium chloride (NaCl) solution. The specimens were tested at wide range of curing ages namely 7, 28, 56, 90 and 180 days. The effects of MK, w/b ratio, age, and NaCl exposure upon concrete were demonstrated in this investigation along with the comparison of results of both MK and PSC concrete were done. It was also observed that concrete with MK shows improved performance as compared to concrete with PSC.