Effect of Air Entraining Agent on Efflorescence of Cement-Based Decorative Mortar and Its Mechanism
ZHU Huimei
WANG Peiming
ZHANG Guofang
Abstract：Effects of air entraining agent on the primary efflorescence and secondary efflorescence of Portland cement-based decorative mortar(PCDM)and its mechanism were studied.The results show that air entraining agent significantly prohibits the primary efflorescence of PCDM by its outstanding air entraining effect and procoagulant effect.Air entraining agent also significantly reduces the secondary efflorescence of PCDM with ages shorter than 7 d,and eliminates the secondary efflorescence of PCDM with ages longer than 7 d,so that it decreases the proportion of small capillaries,and the concentrations of K+,Na+ in the pore solution,and also prohibits these ions' mobility,accordingly greatly decreases the total leachability of alkali ions on the surface of PCDM.So the solid content in the surface leaching solution and secondary efflorescence degree of PCDM are reduced.
Keywords：Portland cement-based decorative mortar (PCDM)air entraining agentefflorescenceeffect mechanism
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )