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Chloride penetration in concrete exposed under different temperatures

Bo Li (Institutionen för bygg- och miljöteknik, Byggnadsteknologi) ; Luping Tang (Institutionen för bygg- och miljöteknik, Byggnadsteknologi)
Proceedings of International RILEM Workshop on Integrated Service Life Modelling of Concrete Structures Vol. RILEM PRO 56 (2007), p. 31-38.
[Konferensbidrag, refereegranskat]

This paper presents the results from the laboratory investigation of chloride penetration in concrete exposed under different temperatures. As a part of doctoral work, six types of Portland cement concrete with w/c from 0.30 to 0.75 and with or without air entrained agent were used in the investigation. The concrete specimens were exposed to 3% NaCl solution under constant temperatures of 20 ºC, 5 ºC and 0 ºC, and daily cyclic temperature regime for freeze-thaw actions. The measurements include liquid uptake and chloride penetration profiles. The results show considerably big differences in chloride penetration profiles obtained after exposure under different temperatures. The results demonstrate again that the freeze-thaw action significantly increases the liquid uptake. This uptaken liquid as a chloride solution increased chloride ingress in concrete.



Denna post skapades 2008-01-14. Senast ändrad 2017-03-21.
CPL Pubid: 66360

 

Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Byggnadsteknologi

Ämnesområden

Samhällsbyggnadsteknik

Chalmers infrastruktur