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A platform for research: civil engineering, architecture and urbanism
Slag and Silica Fume-Based Geopolymer Mortar Using Locally Available Waste Filler Materials
https://orcid.org/https://orcid.org/0000-0003-2475-4694
The modern construction industry has shown excellent progress with the advancement of materials technology. The production of geopolymers from industrial waste materials is undoubtedly an outstanding evolvement among these. The environmental amiability, such as less CO2 emission and recycling the waste, makes it a suitable substitute for ordinary Portland cement and contributes to sustainability in the construction sector. This research experimentally evaluated the performance of different filler materials in geopolymer mortar. ASTM-graded fine aggregate of the geopolymer mortar was replaced by brick dust, fly ash, waste glass and compared with EN standard sand. Mortar properties such as flowability, fracture mechanism, and strength development of GGBS and silica-fume-based geopolymer were investigated. A range of 0–20% graded sand was replaced and cured at 60 °C and then kept in ambient temperature until 3 and 7 days before compression testing. The water-to-binder (80% GGBS + 20% silica fume) ratio was kept the same for all different combinations of geopolymer mortars. 6 M activator was used in which sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) ratio was 1:2.5. In general, with the increment of sand replacement, mortar flow was increased—the only exception observed for fly ash due to its high surface area. The compressive strength results indicated strength improvement up to 20% filler replacement except for fly ash. Among the waste materials, brick dust gave 45 MPa compressive strength (more than double of the control mortar) in 7 days indicating a promising green material could be used in geopolymer production.
Slag and Silica Fume-Based Geopolymer Mortar Using Locally Available Waste Filler Materials
https://orcid.org/https://orcid.org/0000-0003-2475-4694
The modern construction industry has shown excellent progress with the advancement of materials technology. The production of geopolymers from industrial waste materials is undoubtedly an outstanding evolvement among these. The environmental amiability, such as less CO2 emission and recycling the waste, makes it a suitable substitute for ordinary Portland cement and contributes to sustainability in the construction sector. This research experimentally evaluated the performance of different filler materials in geopolymer mortar. ASTM-graded fine aggregate of the geopolymer mortar was replaced by brick dust, fly ash, waste glass and compared with EN standard sand. Mortar properties such as flowability, fracture mechanism, and strength development of GGBS and silica-fume-based geopolymer were investigated. A range of 0–20% graded sand was replaced and cured at 60 °C and then kept in ambient temperature until 3 and 7 days before compression testing. The water-to-binder (80% GGBS + 20% silica fume) ratio was kept the same for all different combinations of geopolymer mortars. 6 M activator was used in which sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) ratio was 1:2.5. In general, with the increment of sand replacement, mortar flow was increased—the only exception observed for fly ash due to its high surface area. The compressive strength results indicated strength improvement up to 20% filler replacement except for fly ash. Among the waste materials, brick dust gave 45 MPa compressive strength (more than double of the control mortar) in 7 days indicating a promising green material could be used in geopolymer production.
Slag and Silica Fume-Based Geopolymer Mortar Using Locally Available Waste Filler Materials
https://orcid.org/https://orcid.org/0000-0003-2475-4694
The modern construction industry has shown excellent progress with the advancement of materials technology. The production of geopolymers from industrial waste materials is undoubtedly an outstanding evolvement among these. The environmental amiability, such as less CO2 emission and recycling the waste, makes it a suitable substitute for ordinary Portland cement and contributes to sustainability in the construction sector. This research experimentally evaluated the performance of different filler materials in geopolymer mortar. ASTM-graded fine aggregate of the geopolymer mortar was replaced by brick dust, fly ash, waste glass and compared with EN standard sand. Mortar properties such as flowability, fracture mechanism, and strength development of GGBS and silica-fume-based geopolymer were investigated. A range of 0–20% graded sand was replaced and cured at 60 °C and then kept in ambient temperature until 3 and 7 days before compression testing. The water-to-binder (80% GGBS + 20% silica fume) ratio was kept the same for all different combinations of geopolymer mortars. 6 M activator was used in which sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) ratio was 1:2.5. In general, with the increment of sand replacement, mortar flow was increased—the only exception observed for fly ash due to its high surface area. The compressive strength results indicated strength improvement up to 20% filler replacement except for fly ash. Among the waste materials, brick dust gave 45 MPa compressive strength (more than double of the control mortar) in 7 days indicating a promising green material could be used in geopolymer production.
Slag and Silica Fume-Based Geopolymer Mortar Using Locally Available Waste Filler Materials
Lecture Notes in Civil Engineering
Arthur, Scott (editor) / Saitoh, Masato (editor) / Pal, Sudip Kumar (editor) / Nasimuzzaman, Md. (author) / Ayon, M. S. (author) / Islam, G. M. Sadiqul (author)
2021-10-31
12 pages
Article/Chapter (Book)
Electronic Resource
English
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