International Journal of Concrete Structures and Materials

, Volume 6, Issue 3, pp 155-163

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Study on Neutralization Progress Model of Concrete with Coating Finishing Materials in Outdoor Exposure Conditions Based on the Diffusion Reaction of Calcium Hydroxide

  • Jae-Hong ParkAffiliated withFaculty and Graduate School of Engineering, Hokkaido University Email author 
  • , Takuya HasegawaAffiliated withFaculty and Graduate School of Engineering, Hokkaido University
  • , Osamu SenbuAffiliated withFaculty and Graduate School of Engineering, Hokkaido University
  • , Dong-Cheon ParkAffiliated withDepartment of Architecture and Ocean Space, Korea Maritime University


In order to predict the neutralization of concrete which is the reaction of carbonation dioxide from the outside and cement hydration product, such as calcium hydroxide and C–S–H, it was studied the numerical analysis method considering change of the pore structure and relative humidity during the neutralization reaction. Diffusion–reaction neutralization model was developed to predict the neutralization depth of concrete with coating finishing material. In order to build numerical analysis models considering outdoor environment and finishing materials, the adaption of proposed model was shown the results of existing outdoor exposure test results and accelerated carbonation test.


neutralization of prediction diffusion of calcium hydroxide rate coefficient of reaction residual calcium hydroxide outdoor exposure