TY - JOUR

T1 - A model for predicting the relative chloride diffusion coefficient in unsaturated cementitious materials

AU - Zhang, Yong

AU - Ye, Guang

PY - 2019/1/1

Y1 - 2019/1/1

N2 - An analytical model for predicting the relative chloride diffusion coefficient in cementitious materials at different degrees of water saturation is presented in this paper. The model is developed based on the Nernst-Einstein equation and conductivity of cementitious electrolyte, as well as on moisture distribution in the pore structure. Good agreement is found between the model and the experimental data. With the help of the model, the chloride diffusion coefficient of cementitious material at unsaturated state can be determined according to the chloride diffusion coefficient at saturated state, the degree of water saturation and the average pore diameter of the material. A detailed discussion about the inputs and outputs of the model is given in order to facilitate its application for engineering practice.

AB - An analytical model for predicting the relative chloride diffusion coefficient in cementitious materials at different degrees of water saturation is presented in this paper. The model is developed based on the Nernst-Einstein equation and conductivity of cementitious electrolyte, as well as on moisture distribution in the pore structure. Good agreement is found between the model and the experimental data. With the help of the model, the chloride diffusion coefficient of cementitious material at unsaturated state can be determined according to the chloride diffusion coefficient at saturated state, the degree of water saturation and the average pore diameter of the material. A detailed discussion about the inputs and outputs of the model is given in order to facilitate its application for engineering practice.

KW - Cementitious material

KW - Chloride diffusion

KW - Degree of water saturation

KW - Modeling

KW - Pore structure

UR - http://www.scopus.com/inward/record.url?scp=85055157062&partnerID=8YFLogxK

U2 - 10.1016/j.cemconres.2018.10.013

DO - 10.1016/j.cemconres.2018.10.013

M3 - Article

AN - SCOPUS:85055157062

VL - 115

SP - 133

EP - 144

JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

ER -