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Kai Yao, Qing Li, Ping Chen, Juntong Li, Penghuai Wang and Wenqi Tang
In response to the high water sorptivity of alkali-activated slag?red mud?steel slag cementitious material (AASRSS), water and aggressive ions are easily transferred to the interior of cementitious materials, which poses a significant threat to their dur...
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Andres Salas Montoya, Loth I. Rodríguez-Barboza, Fabiola Colmenero Fonseca, Javier Cárcel-Carrasco and Lauren Y. Gómez-Zamorano
In recent decades, alkali activated and blended cements have attracted great interest worldwide due to their advantages of low energy cost, high strength, and good durability. This study evaluated the effects of replacing 50% of Portland cement with a mi...
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Bettina Kraft, Rebecca Achenbach, Horst-Michael Ludwig and Michael Raupach
The cement industry gains increasing public attention because of the high CO2 emissions for which it is accountable. One approach to improve the carbon footprint of cement production is the development of alternative binders, which can be produced with l...
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Dany Kassim, Ghandy Lamaa, Rui Vasco Silva and Jorge de Brito
The use of electric arc furnace slag (EAFS) as sole precursor to produce alkali-activated mortars has been experimentally investigated. EAFS, a by-product of the steel recycling industry, is a coarse material with unevenly distributed and size-extensive ...
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Vitor A. Nunes, Prannoy Suraneni, Augusto C. S. Bezerra, Carlos Thomas and Paulo H. R. Borges
Steel slag (SS) is a secondary material from steelmaking production with little commercial value. Its volumetric expansion and low reactivity limit the use of SS in Portland cement (PC)-based materials. This study investigated the potential use of basic ...
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Kruthi Kiran Ramagiri, Patricia Kara De Maeijer and Arkamitra Kar
Alkali-activated binders (AABs) offer the opportunity to upcycle a variety of residues into products that can have added value. Although AABs are reported to have a superior high-temperature performance, their thermal behavior is heavily governed by thei...
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Yanbing Zhao, Caiqian Yang, Kefeng Li, Jing Yang, Zhiren Wu and Chengyu Yan
The coal gangue after composite activation treatment is considered a potential low-carbon and green cementitious material, so the feasibility of employing composite-activated gangue to partially or entirely replace cement for building materials is system...
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Biruk Hailu Tekle, Klaus Holschemacher, Philipp Löber and Björn Heiden
Concrete is the most commonly used construction material because of its various advantages, such as versatility, familiarity, strength, and durability, and it will continue to be in demand far into the future. However, with today?s sensitivity to environ...
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Nabil Bella, Edwin Gudiel, Lourdes Soriano, Alba Font, María Victoria Borrachero, Jordi Paya and José Maria Monzó
Worldwide cement production is around 4.2 billion tons, and the fabrication of one ton of ordinary Portland cement emits around 900 kg of CO2. Blast furnace slag (BFS) is a byproduct used to produce alkali-activated materials (AAM). BFS production was es...
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Zhenming Li, Xingliang Yao, Yun Chen, Tianshi Lu and Guang Ye
Alkali-activated slag and fly ash (AASF) materials are emerging as promising alternatives to conventional Portland cement. Despite the superior mechanical properties of AASF materials, they are known to show large autogenous shrinkage, which hinders the ...
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