Effects of amorphous C12A7 on properties of dry-mixed mortar
LI Wenping
WANG Dongmin
WANG Yiren
ZHANG Jiangtao
ZHANG Lei
Abstract：The effects of amorphous C12A7 which partly replaced ordinary Portland cement are studied in this paper on the early properties including setting time,fluidity,mechanical property,water-retaining property and water-absorption property of drymixed mortar,hydration products were tested by Scanning electron microscope (SEM).The results showed that when the amount of ordinary Portland cement was 6％ replaced by amorphous C12A7,the setting time of the mortar is 84 min,the 28 d compressive strength is 47.1 MPa,the water-absorption ratio is 3.16％ and the water-retention is 96％.It indicated that amorphous C12A7 can decrease the setting time of mortar,increase the mechanical properties of mortar,decrease the water-absorption of mortar and also improve the water-retention property of dry-mixed mortar.
Keywords：amorphous C12A7dry-mixed mortarsetting timewater-retention
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( 46-49 )