In this paper, we have studied the anti-rebar corrosion ability of high-strength concrete （HSC）, which were made by one or two mixed fly ash and slag. The different effects of fly ash and slag on concrete anti-rebar...In this paper, we have studied the anti-rebar corrosion ability of high-strength concrete （HSC）, which were made by one or two mixed fly ash and slag. The different effects of fly ash and slag on concrete anti-rebar corrosion ability were discussed in chloride ion-contaminated condition. The results indicate that the effects of slag on concrete anti-chloride ion penetration ability are more excellent than that of fly ash at the same content. When the content of fly ash is 10%, the corrosion-inhibition action is not obvious; when the content is higher than 25%, this effect is remarkable. Corrosion-inhibition action of slag is better than that of fly ash. Slag is not like fly ash that has obvious effect on anode curves Tafer slope, so its contribution to restraining rebar in concrete corrosion is the result of high concrete anti-chloride ion penetration ability and binding chloride ion. Their ＂superimposition effect＂ can be realized only at reasonable content and proportion condition.展开更多
基金Supported by the National Natural Science Foundation of China (50772084)
文摘In this paper, we have studied the anti-rebar corrosion ability of high-strength concrete （HSC）, which were made by one or two mixed fly ash and slag. The different effects of fly ash and slag on concrete anti-rebar corrosion ability were discussed in chloride ion-contaminated condition. The results indicate that the effects of slag on concrete anti-chloride ion penetration ability are more excellent than that of fly ash at the same content. When the content of fly ash is 10%, the corrosion-inhibition action is not obvious; when the content is higher than 25%, this effect is remarkable. Corrosion-inhibition action of slag is better than that of fly ash. Slag is not like fly ash that has obvious effect on anode curves Tafer slope, so its contribution to restraining rebar in concrete corrosion is the result of high concrete anti-chloride ion penetration ability and binding chloride ion. Their ＂superimposition effect＂ can be realized only at reasonable content and proportion condition.
