Open AccessThe deteriorated microstructure characteristics of fly ash doped cementitious materials by dissolution
Author(s) -
Xiang Li,
Chunfeng Liu,
Chao Lü,
Ziling Peng,
Jiazheng Li,
Xingdong Lv
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/5/052001
Subject(s) - cementitious , fly ash , dissolution , microstructure , materials science , cement , clinker (cement) , mineralogy , chemical engineering , metallurgy , composite material , chemistry , portland cement , engineering
The microstructure differentia of fly ash doped cementitious materials between before and after dissolution was observed by XRD and MIP to analyze the microstructural deterioration characteristics of different samples. Results showed that there were great changes in hydration products, cement clinker and fly ash particles after dissolution. Pore structure evolution during dissolution indicated that the effect of C-S-H decalcification on pore structure was not negligible and the traditional definition between the harmful pore and the harmless pore was not applicable.