Based on European standard to study the effect of internal sulfate reaction on volume stability of concrete
XIANG Weiping
LAN Cong
CHEN Jing
LIU Yunpeng
WANG Fazhou
Abstract：Based on European standard and the residual swelling test and SEM test method,through the composition differ-ence of gelled material system,the influence of internal sulfate reaction on volume stability of concrete was studied and its mech-anism was also analyzed. The results show that the internal sulfate reaction have influence on the stability of concrete volume,and the more C3A in the gel system,the more AFt and AFm can be generated,and its internal sulfate reaction more intense;AFt hy-dration products mainly generated in concrete pore and grew;and AFm main generated by bonding with CSH gel;while internal concrete sulfate reaction will produce volume expansion,which mainly caused by AFm expands when it is converted into the AFt.
Keywords：internal sulfate reactionvolume stabilitySEMAFt
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：4( 5-8 )