Hydration of calcium sulfoaluminate cement blended with blast-furnace slag

被引：72
作者：
Yoon, H. N. [1 ]
Seo, Joonho [1 ]
Kim, Seonhyeok [1 ]
Lee, H. K. [1 ]
Park, Solmoi [1 ,2 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, 291 Daehak Ro, Daejeon 34141, South Korea
[2] Pukyong Natl Univ, Dept Civil Engn, 45 Yongso Ro, Busan 48513, South Korea
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 268卷
基金：
新加坡国家研究基金会;
关键词：
Calcium sulfoaluminate cement; Blast-furnace slag; Hydration; Thermodynamic modelling; Characterization; COMPRESSIVE STRENGTH; PORTLAND-CEMENT; FLY-ASH; ALUMINATE CEMENT; CSA; CARBONATION; AL-27; MICROSTRUCTURE; TEMPERATURE; SILICATE;
D O I：
10.1016/j.conbuildmat.2020.121214
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The present study investigates the hydration of calcium sulfoaluminate (CSA) cement blended with blastfurnace slag (BFS). BFS was added at dosages of 0, 30, 50 and 70% of the binder mass. The samples were cured for up to 360 days and characterized using various analytical techniques. The obtained results indicate that BFS-blended CSA cement incorporating 30% BFS exhibits compressive strength comparable to that of the sample solely consisting of CSA cement. BFS incorporation in CSA cement leads to the formation of more stratlingite, possibly preventing the development of porosity due to the destabilization of CAH(10). The main hydration products of CSA cement blended with BFS are identified as ettringite, monosulfate, Al(OH)(3) and stratlingite, similar to those forming during the hydration of CSA cement, though stratlingite increasingly forms at higher BFS contents. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：16
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