Details
| Original language | English |
|---|---|
| Article number | 120518 |
| Journal | Construction and Building Materials |
| Volume | 261 |
| Early online date | 25 Aug 2020 |
| Publication status | Published - 20 Nov 2020 |
Abstract
Cement industry is one of the industries that contribute to global warming by emitting tons of carbon dioxide. On the other hand, there are lots of industrial wastes that are piling up daily. Therefore, minimizing the use of cement and reducing its negative impact on the environment is our scope. This paper targets to study the effect of alkali-activated pozzolanic materials used as partial or full substitution of cement in mortars cured at ambient temperature. Fly ash, silica fume, rice husk ash, metakaolin, as well as ground granulated blast-furnace slag were incorporated in mortars as cement substitute by ratios varied from 10% to 100% by weight of cement. Alkaline solution of sodium hydroxide and sodium silicate was utilized as activator with activation solution to binder ratio varies from 0.25 to 0.5. Besides, the ratio of sodium silicate to sodium hydroxide was kept 2:1 throughout the study. The results showed the potential of producing high early strength eco-friendly mortars using alkali-activated fly ash and slag as cement substitutions with ratios of 80% and 100% respectively, which is promising for sustainable construction.
Keywords
- Alkaline activated solutions, Compressive strength, Fly ash, Geopolymer, Metakaolin, Rice husk ash, Slag
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Materials Science(all)
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In: Construction and Building Materials, Vol. 261, 120518, 20.11.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Compressive strength of mortars incorporating alkali-activated materials as partial or full replacement of cement
AU - Hany, Engy
AU - Fouad, Nabil
AU - Abdel-Wahab, Mona
AU - Sadek, Ehab
PY - 2020/11/20
Y1 - 2020/11/20
N2 - Cement industry is one of the industries that contribute to global warming by emitting tons of carbon dioxide. On the other hand, there are lots of industrial wastes that are piling up daily. Therefore, minimizing the use of cement and reducing its negative impact on the environment is our scope. This paper targets to study the effect of alkali-activated pozzolanic materials used as partial or full substitution of cement in mortars cured at ambient temperature. Fly ash, silica fume, rice husk ash, metakaolin, as well as ground granulated blast-furnace slag were incorporated in mortars as cement substitute by ratios varied from 10% to 100% by weight of cement. Alkaline solution of sodium hydroxide and sodium silicate was utilized as activator with activation solution to binder ratio varies from 0.25 to 0.5. Besides, the ratio of sodium silicate to sodium hydroxide was kept 2:1 throughout the study. The results showed the potential of producing high early strength eco-friendly mortars using alkali-activated fly ash and slag as cement substitutions with ratios of 80% and 100% respectively, which is promising for sustainable construction.
AB - Cement industry is one of the industries that contribute to global warming by emitting tons of carbon dioxide. On the other hand, there are lots of industrial wastes that are piling up daily. Therefore, minimizing the use of cement and reducing its negative impact on the environment is our scope. This paper targets to study the effect of alkali-activated pozzolanic materials used as partial or full substitution of cement in mortars cured at ambient temperature. Fly ash, silica fume, rice husk ash, metakaolin, as well as ground granulated blast-furnace slag were incorporated in mortars as cement substitute by ratios varied from 10% to 100% by weight of cement. Alkaline solution of sodium hydroxide and sodium silicate was utilized as activator with activation solution to binder ratio varies from 0.25 to 0.5. Besides, the ratio of sodium silicate to sodium hydroxide was kept 2:1 throughout the study. The results showed the potential of producing high early strength eco-friendly mortars using alkali-activated fly ash and slag as cement substitutions with ratios of 80% and 100% respectively, which is promising for sustainable construction.
KW - Alkaline activated solutions
KW - Compressive strength
KW - Fly ash
KW - Geopolymer
KW - Metakaolin
KW - Rice husk ash
KW - Slag
UR - http://www.scopus.com/inward/record.url?scp=85089807608&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.120518
DO - 10.1016/j.conbuildmat.2020.120518
M3 - Article
AN - SCOPUS:85089807608
VL - 261
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
M1 - 120518
ER -