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Temple Chimuanya Odimegwu, A. B. M. A. Kaish, Maslina Jamil, M. F. M. Zain, Asset Turlanbekov and Ahmed W. Al Zand
This study evaluated the effect of alum sludge as an alternative to fly ash in fabricating geopolymer paste and mortar. The blending of this industrial waste (alum sludge and fly ash) is not only for the benefit of sustainable construction and disposal o...
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Ali S. Alqarni, Husain Abbas, Khattab M. Al-Shwikh and Yousef A. Al-Salloum
Worldwide the concrete industry has started embracing the utilization of recycled concrete aggregates (RCAs) resulting from demolition and construction waste as full or partial substituents in the production of high-strength concrete (HSC) due to their e...
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Chuheng Zhong, Peng Tian, Yuhua Long, Jinzhi Zhou, Kun Peng and Chengxin Yuan
To improve the properties of recycled aggregate concrete, single and composite impregnation treatments were carried out on recycled coarse aggregates with sodium silicate solution, silane slurry, and polyvinyl alcohol solution. The effects of the three c...
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Ahmed S. Eisa, Peter Sabol, Kamilia M. Khamis and Ahmed A. Attia
Geopolymer concrete is concrete made from industrial materials, such as fly ash, GGBS, silica fume, and metakaolin, used as a cement alternative. In this study, geopolymer concrete will be based on fly ash as a binder material, alkaline activators of sod...
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Feras Abu Obaida, Tamer El-Maaddawy and Hilal El-Hassan
This study aims to examine the potential use of a geopolymeric matrix as a sustainable alternative to commercial mortars in carbon fabric-reinforced matrix composites. Single-lap shear tests were conducted to examine the bond behavior at the fabric-matri...
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Nadav Hanegbi and Itzhak Katra
Soil erosion has environmental and socioeconomic significances. Loess soils cover about 10% of the global land area. Most of these soils are subjected to increased land uses such as unpaved roads, which increase soil destruction and dust emission to the ...
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Antoni Antoni,Stacia Dwi Shenjaya,Maria Lupita,Samuel Santosa,David Wiyono,Djwantoro Hardjito
Pág. 94 - 100
Circulating fluidized bed combustion (CFBC) is a newer type of burner that employ a circulating process to burn fuel effectively. CFBC burning process is gaining more popularity due to its compact size, high efficiency and lower burning temperature compa...
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Galal El-Habaak, Mohamed Askalany and Mahmoud Abdel-Hakeem
The present study mainly investigates the synthesis of calcined marl-based geopolymeric cement under different synthesis conditions including NaOH concentration, sodium silicate (SS)/sodium hydroxide (SH) mass ratios, solid (S)/liquid (L) mass ratios, ca...
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Puput Risdanareni,Afif Achsanul Choiri,Boedya Djatmika,Poppy Puspitasari
Pág. 86 - 92
This paper investigates the effect of using metakaolin Artificial Lightweight Aggregates (ALWA) as a substitute for coarse aggregates to produce structural lightweight concrete. A combination of 10M NaOH solution and sodium silicate solution was used as...
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Willian Aperador, Arnoldo Delgado, Enrique Vera
Pág. Page 81 - 94
In this work the technique of impedance spectroscopy electrochemistry (EIS) was used to evaluate the effects of carbon dioxide on the corrosion of ASTM A 706 structural steel embedded in concrete with alkali activated slag (AAS), AAS concrete is a mixtur...
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