Microstructure of amorphous aluminum hydroxide in belite-calcium sulfoaluminate cement

Fei Song; Zhenglei Yu; Fengling Yang; Yinong Lu; Yunfei Liu

doi:10.1016/j.cemconres.2015.01.013

Microstructure of amorphous aluminum hydroxide in belite-calcium sulfoaluminate cement

Fei Song, Zhenglei Yu, Fengling Yang, Yinong Lu, Yunfei Liu

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

109 Scopus citations

Abstract

Belite-calcium sulfoaluminate (BCSA) cement is a promising low-CO₂ alternative to ordinary Portland cement. Herein, aluminum hydroxide (AH₃), the main amorphous hydration product of BCSA cement, was investigated in detail. The microstructure of AH₃ with various quantities of gypsum was investigated via scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The AH₃ with various morphologies were observed and confi rmed in the resulting pastes. Particular attention was paid to the fact that AH₃ always contained a small amount of Ca according to the results of EDS analysis. The AH₃ was then characterized via high resolution transmission electron microscopy (HRTEM). The results of HRTEM indicated that Ca arose from nanosized tricalcium aluminate hexahydrate which existed in the AH₃.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Cement and Concrete Research
Volume	71
DOIs	https://doi.org/10.1016/j.cemconres.2015.01.013
State	Published - May 2015

Keywords

Aluminum hydroxide
Belite-calcium sulfoaluminate
Hydration
Tricalcium aluminate hexahydrate

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10.1016/j.cemconres.2015.01.013

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title = "Microstructure of amorphous aluminum hydroxide in belite-calcium sulfoaluminate cement",

abstract = "Belite-calcium sulfoaluminate (BCSA) cement is a promising low-CO2 alternative to ordinary Portland cement. Herein, aluminum hydroxide (AH3), the main amorphous hydration product of BCSA cement, was investigated in detail. The microstructure of AH3 with various quantities of gypsum was investigated via scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The AH3 with various morphologies were observed and confi rmed in the resulting pastes. Particular attention was paid to the fact that AH3 always contained a small amount of Ca according to the results of EDS analysis. The AH3 was then characterized via high resolution transmission electron microscopy (HRTEM). The results of HRTEM indicated that Ca arose from nanosized tricalcium aluminate hexahydrate which existed in the AH3.",

keywords = "Aluminum hydroxide, Belite-calcium sulfoaluminate, Hydration, Tricalcium aluminate hexahydrate",

author = "Fei Song and Zhenglei Yu and Fengling Yang and Yinong Lu and Yunfei Liu",

year = "2015",

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doi = "10.1016/j.cemconres.2015.01.013",

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TY - JOUR

T1 - Microstructure of amorphous aluminum hydroxide in belite-calcium sulfoaluminate cement

AU - Song, Fei

AU - Yu, Zhenglei

AU - Yang, Fengling

AU - Lu, Yinong

AU - Liu, Yunfei

PY - 2015/5

Y1 - 2015/5

N2 - Belite-calcium sulfoaluminate (BCSA) cement is a promising low-CO2 alternative to ordinary Portland cement. Herein, aluminum hydroxide (AH3), the main amorphous hydration product of BCSA cement, was investigated in detail. The microstructure of AH3 with various quantities of gypsum was investigated via scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The AH3 with various morphologies were observed and confi rmed in the resulting pastes. Particular attention was paid to the fact that AH3 always contained a small amount of Ca according to the results of EDS analysis. The AH3 was then characterized via high resolution transmission electron microscopy (HRTEM). The results of HRTEM indicated that Ca arose from nanosized tricalcium aluminate hexahydrate which existed in the AH3.

AB - Belite-calcium sulfoaluminate (BCSA) cement is a promising low-CO2 alternative to ordinary Portland cement. Herein, aluminum hydroxide (AH3), the main amorphous hydration product of BCSA cement, was investigated in detail. The microstructure of AH3 with various quantities of gypsum was investigated via scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The AH3 with various morphologies were observed and confi rmed in the resulting pastes. Particular attention was paid to the fact that AH3 always contained a small amount of Ca according to the results of EDS analysis. The AH3 was then characterized via high resolution transmission electron microscopy (HRTEM). The results of HRTEM indicated that Ca arose from nanosized tricalcium aluminate hexahydrate which existed in the AH3.

KW - Aluminum hydroxide

KW - Belite-calcium sulfoaluminate

KW - Hydration

KW - Tricalcium aluminate hexahydrate

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U2 - 10.1016/j.cemconres.2015.01.013

DO - 10.1016/j.cemconres.2015.01.013

M3 - 文章

AN - SCOPUS:84921796092

SN - 0008-8846

VL - 71

SP - 1

EP - 6

JO - Cement and Concrete Research

JF - Cement and Concrete Research

ER -

Microstructure of amorphous aluminum hydroxide in belite-calcium sulfoaluminate cement

Abstract

Keywords

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