Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags
This paper investigated the effect of blast furnace slags (BFS) characteristics on the properties achievement after being alkali activated. The physical and chemical characteristics of BFS were determined by X-ray fluorescence (XRF), X-ray Diffraction (XRD) and laser granulometry. Multi-technical ch...
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doaj-ff09a842940b47c3b497f09cec9394a02020-11-25T00:42:41ZengMDPI AGMaterials1996-19442019-06-011213208910.3390/ma12132089ma12132089Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace SlagsJun Xing0Yingliang Zhao1Jingping Qiu2Xiaogang Sun3College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaThis paper investigated the effect of blast furnace slags (BFS) characteristics on the properties achievement after being alkali activated. The physical and chemical characteristics of BFS were determined by X-ray fluorescence (XRF), X-ray Diffraction (XRD) and laser granulometry. Multi-technical characterizations using calorimetry, XRD, Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetry (TG-DTG), scanning electron microscope (SEM), nitrogen sorption and uniaxial compressive strength (UCS) were applied to give an in-depth understanding of the relationship between the reaction products, microstructure and BFS characteristics. The test results show that the microstructure and mechanical properties of alkali activated blast furnace slags (BFS) highly depend on the characteristics of BFS. Although the higher content of basic oxide could accelerate the hydration process and result in higher mechanical properties, a poor thermal stabilization was observed. On the other hand, with a higher content of Fe, the hydration process in alkali activated BFS2 lasts for a longer time, contributing to a delayed compressive strength achievement.https://www.mdpi.com/1996-1944/12/13/2089alkali activatedblast furnace slagsmicrostructuremechanical properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jun Xing Yingliang Zhao Jingping Qiu Xiaogang Sun |
spellingShingle |
Jun Xing Yingliang Zhao Jingping Qiu Xiaogang Sun Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags Materials alkali activated blast furnace slags microstructure mechanical properties |
author_facet |
Jun Xing Yingliang Zhao Jingping Qiu Xiaogang Sun |
author_sort |
Jun Xing |
title |
Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags |
title_short |
Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags |
title_full |
Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags |
title_fullStr |
Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags |
title_full_unstemmed |
Microstructural and Mechanical Properties of Alkali Activated Materials from Two Types of Blast Furnace Slags |
title_sort |
microstructural and mechanical properties of alkali activated materials from two types of blast furnace slags |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-06-01 |
description |
This paper investigated the effect of blast furnace slags (BFS) characteristics on the properties achievement after being alkali activated. The physical and chemical characteristics of BFS were determined by X-ray fluorescence (XRF), X-ray Diffraction (XRD) and laser granulometry. Multi-technical characterizations using calorimetry, XRD, Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetry (TG-DTG), scanning electron microscope (SEM), nitrogen sorption and uniaxial compressive strength (UCS) were applied to give an in-depth understanding of the relationship between the reaction products, microstructure and BFS characteristics. The test results show that the microstructure and mechanical properties of alkali activated blast furnace slags (BFS) highly depend on the characteristics of BFS. Although the higher content of basic oxide could accelerate the hydration process and result in higher mechanical properties, a poor thermal stabilization was observed. On the other hand, with a higher content of Fe, the hydration process in alkali activated BFS2 lasts for a longer time, contributing to a delayed compressive strength achievement. |
topic |
alkali activated blast furnace slags microstructure mechanical properties |
url |
https://www.mdpi.com/1996-1944/12/13/2089 |
work_keys_str_mv |
AT junxing microstructuralandmechanicalpropertiesofalkaliactivatedmaterialsfromtwotypesofblastfurnaceslags AT yingliangzhao microstructuralandmechanicalpropertiesofalkaliactivatedmaterialsfromtwotypesofblastfurnaceslags AT jingpingqiu microstructuralandmechanicalpropertiesofalkaliactivatedmaterialsfromtwotypesofblastfurnaceslags AT xiaogangsun microstructuralandmechanicalpropertiesofalkaliactivatedmaterialsfromtwotypesofblastfurnaceslags |
_version_ |
1725281019159904256 |