Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder
In this study, light-burnt dolomite powder was substituted for up to 20% of ground granulated blast-furnace slag in sodium sulfate-activated slag systems. The effects of light-burnt dolomite incorporation on compressive strength were investigated. Mineralogical analysis included XRD and FT-IR. Micro...
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doaj-377bcec397404a2cb4aa3ce69d01543a2021-07-23T04:49:46ZengElsevierJournal of Materials Research and Technology2238-78542021-07-011322202228Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powderIn Kyu Jeon0Hong Gi Kim1Sadam Hussain Jakhrani2Jae-Suk Ryou3Zachry Department of Civil & Environmental Engineering, Texas A&M University, College Station, TX, USACivil & Environmental Engineering Department, Room 415, Jaesung Civil Engineering Building, 222 Wangsimni-ro, Seongdong Gu, Seoul, South KoreaCivil Engineering Department, COMSATS University Islamabad (CUI), Sahiwal Campus, Sahiwal, 57000, PakistanCivil & Environmental Engineering Department, Room 404, Jaesung Civil Engineering Building, 222 Wangsimni-ro, Seongdong Gu, Seoul, South Korea; Corresponding author.In this study, light-burnt dolomite powder was substituted for up to 20% of ground granulated blast-furnace slag in sodium sulfate-activated slag systems. The effects of light-burnt dolomite incorporation on compressive strength were investigated. Mineralogical analysis included XRD and FT-IR. Microstructure analysis included MIP and SEM examination. The durability properties, including carbonation depth and chloride penetration, were also investigated. The results indicate that the inclusion of LBD enhanced hydrotalcite and calcite formation and resulted in dense microstructures. All specimens with LBD had better mechanical and durability properties than did mixtures without LBD. Compared with 10% LBD incorporation, 20% LBD incorporation had fewer negative effects on mechanical and durability properties.http://www.sciencedirect.com/science/article/pii/S2238785421005792Alkali-activated slagSodium sulfateLight-burnt dolomiteMicrostructureDurability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
In Kyu Jeon Hong Gi Kim Sadam Hussain Jakhrani Jae-Suk Ryou |
spellingShingle |
In Kyu Jeon Hong Gi Kim Sadam Hussain Jakhrani Jae-Suk Ryou Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder Journal of Materials Research and Technology Alkali-activated slag Sodium sulfate Light-burnt dolomite Microstructure Durability |
author_facet |
In Kyu Jeon Hong Gi Kim Sadam Hussain Jakhrani Jae-Suk Ryou |
author_sort |
In Kyu Jeon |
title |
Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
title_short |
Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
title_full |
Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
title_fullStr |
Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
title_full_unstemmed |
Evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
title_sort |
evaluation of the microstructure, mechanical, and durability properties of alkali-activated slag-based mortar with light-burnt dolomite powder |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2021-07-01 |
description |
In this study, light-burnt dolomite powder was substituted for up to 20% of ground granulated blast-furnace slag in sodium sulfate-activated slag systems. The effects of light-burnt dolomite incorporation on compressive strength were investigated. Mineralogical analysis included XRD and FT-IR. Microstructure analysis included MIP and SEM examination. The durability properties, including carbonation depth and chloride penetration, were also investigated. The results indicate that the inclusion of LBD enhanced hydrotalcite and calcite formation and resulted in dense microstructures. All specimens with LBD had better mechanical and durability properties than did mixtures without LBD. Compared with 10% LBD incorporation, 20% LBD incorporation had fewer negative effects on mechanical and durability properties. |
topic |
Alkali-activated slag Sodium sulfate Light-burnt dolomite Microstructure Durability |
url |
http://www.sciencedirect.com/science/article/pii/S2238785421005792 |
work_keys_str_mv |
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