Kinetics study of ultrasound-assisted chloride release from cementitious materials

This paper studied the influence of ultrasound on chloride release from cementitious materials. Results showed that ultrasound power enhanced both equilibrium point and chloride release rate, while ultrasound frequency mainly promoted the release rate. Kinetics analysis demonstrated that chloride release was controlled by the chemical reaction step. Its dominant role was not weakened by ultrasound. A decrease of physically and chemically bound chlorides was found after ultrasound irradiation. Interestingly, the physically bound chlorides decomposed faster than the chemically bound ones. Overall findings clearly demonstrated that ultrasonic waves had a beneficial effect on improving the chloride release from cementitious materials.

Automated summary

This study investigated the influence of ultrasound on chloride release from cementitious materials. The results showed that ultrasound power enhanced both the equilibrium point and release rate of chloride, while ultrasound frequency mainly promoted the release rate. Kinetics analysis demonstrated that the chemical reaction step controlled chloride release, and its dominance was not weakened by ultrasound. Interestingly, physically bound chlorides decomposed faster than chemically bound ones after ultrasound irradiation. Overall, the findings clearly demonstrated the beneficial effect of ultrasonic waves on improving chloride release from cementitious materials.