Investigation on the properties and adaptability of amorphous calcium aluminate based low alkali powder accelerator
LI Wenping
WANG Dongmin
ZHANG Jiangtao
WANG Yiren
ZHANG Lei
Abstract：An amorphous calcium aluminate based low alkali powder accelerator was prepared by using amorphous calcium aluminate mineral C12A7,sodium sulfate,dihydrate gypsum and sodium aluminate. The performance of the accelerator,the adaptability of the different types of cement,mineral admixtures and the compatibility of the different types of water reducing agents were studied. The results show that when the content of the accelerator in cement is 3.5%~5.0%,the performance meet the requirements of JC 477—2005 qualified products,when the content of the accelerator in cement is 4.0%~4.5%,the performance meet the requirements of JC 477—2005 first-class products;amorphous calcium aluminate based accelerator as a cement-based mineral admixture,has good adaptability with different kinds of cement and mineral admixtures,and has good compatibility with naphthalene and polycarboxylate superplasticizer.
Keywords：amorphous C12A7low alkali acceleratorperformanceadaptability
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( 40-43 )