Microstructure and phase evolution of alkali-activated steel slag during early age

Liu, Ze1,2; Zhang, Da-wang1; Li, Li1; Wang, Ji-xiang1; Shao, Ning-ning3; Wang, Dong-min1,2

2019-04-20

10.1016/j.conbuildmat.2019.01.213

CONSTRUCTION AND BUILDING MATERIALS   影响因子和分区

0950-0618

1879-0526

This work aims to investigate the early age evolution of alkali-activated steel slag under curing condition of 60 degrees C. Microstructural characterization and reaction degree of alkali-activated steel slag (Isothermal calorimetric, scanning electron microscope, Transmission electron microscopy, Fourier Transform Infrared Spectrometer, and Si-29 nuclear magnetic resonance) were carried out. The results showed that the densifying microstructure of aluminosilicate gel significantly increases, attributing to the increasing of reaction degree due to the formation of Si-O-T, in the early evolution of alkali-activated steel slag at 60 degrees C curing condition. The Si-29 structure of Q(0) in steel slag gradually converted into Q(1) and Q(2) in the intermediate products which represented the formation of aluminosilicate gels. The evidence indicated that the steel slag can be an alternative raw material in alkali activated application. (C) 2019 Elsevier Ltd. All rights reserved.

Alkali-activation Steel slag Microstructure Phase evolution

SCI ; EI

英语

其他

Beijing Municipal Natural Science Foundation[2192047]

Construction & Building Technology ; Engineering ; Materials Science

Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary

WOS:000464090600016

ELSEVIER SCI LTD

20190606469535

Aluminosilicates ; Curing ; Fourier transform infrared spectroscopy ; High resolution transmission electron microscopy ; Microstructure ; Scanning electron microscopy

Optical Devices and Systems:741.3 ; Chemistry:801 ; Chemical Reactions:802.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
2.China Univ Min & Technol, Res Inst Concrete & Ecomat, Beijing 100083, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Liu, Ze,Zhang, Da-wang,Li, Li,et al. Microstructure and phase evolution of alkali-activated steel slag during early age[J]. CONSTRUCTION AND BUILDING MATERIALS,2019,204:158-165.

Liu, Ze,Zhang, Da-wang,Li, Li,Wang, Ji-xiang,Shao, Ning-ning,&Wang, Dong-min.(2019).Microstructure and phase evolution of alkali-activated steel slag during early age.CONSTRUCTION AND BUILDING MATERIALS,204,158-165.

Liu, Ze,et al."Microstructure and phase evolution of alkali-activated steel slag during early age".CONSTRUCTION AND BUILDING MATERIALS 204(2019):158-165.