Details
| Original language | English |
|---|---|
| Article number | 122032 |
| Journal | Construction and Building Materials |
| Volume | 273 |
| Early online date | 24 Dec 2020 |
| Publication status | Published - 1 Mar 2021 |
| Externally published | Yes |
Abstract
The thermal performance of pegmatite-based geopolymer composites is investigated. Dense and compact matrix was prepared replacing metakaolin with pegmatite in the range of 70–85 wt% and activate with sodium hydroxide/sodium silicate solution in 1:1 vol ratio. The products of geopolymerization, cured at room temperature for 28 days, were heated at 100, 200, 400, 600, 800, 900, 1000 and 1100 °C with 2 h soaking time. The high values of flexural strength (46–51 MPa) were observed at 1000 °C as the consequences of low porosity (173 mm 3/g) and water absorption (4.50–5.62%). The increase of the vitrification at 1100 °C enhanced the liquid phase and develop porosities responsible for reduction of strength. The mechanical properties, microstructural evolution and pore size distribution were found to be influenced by the amount of fine powder of pegmatite (solid solution).
Keywords
- Pegmatite, Mechanical strength, Geopolymer composites, Pore-size distribution
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Building and Construction
- Engineering(all)
- Civil and Structural Engineering
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In: Construction and Building Materials, Vol. 273, 122032, 01.03.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Innovative porous ceramic matrices from inorganic polymer composites (IPCs)
T2 - Microstructure and mechanical properties
AU - Nana, Achile
AU - Kaze, Rodrigue Cyriaque
AU - Alomayri, Thamer
AU - Hasan, Assaedi
AU - Nemaleu, Juvenal Giogetti Deutou
AU - Ngouné, Jean
AU - Tchakouté, Hervé K.
AU - Kamseu, E.
AU - Leonelli, C.
N1 - Funding Information: This project received the contribution of the Royal Society and the African Academy of Science through the funding FLAIR to Dr. Elie Kamseu. Grant; FLR\R1\201402. The authors are grateful to Ingessil S.r.l., Verona, Italy, for providing sodium silicate used for these investigations.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - The thermal performance of pegmatite-based geopolymer composites is investigated. Dense and compact matrix was prepared replacing metakaolin with pegmatite in the range of 70–85 wt% and activate with sodium hydroxide/sodium silicate solution in 1:1 vol ratio. The products of geopolymerization, cured at room temperature for 28 days, were heated at 100, 200, 400, 600, 800, 900, 1000 and 1100 °C with 2 h soaking time. The high values of flexural strength (46–51 MPa) were observed at 1000 °C as the consequences of low porosity (173 mm 3/g) and water absorption (4.50–5.62%). The increase of the vitrification at 1100 °C enhanced the liquid phase and develop porosities responsible for reduction of strength. The mechanical properties, microstructural evolution and pore size distribution were found to be influenced by the amount of fine powder of pegmatite (solid solution).
AB - The thermal performance of pegmatite-based geopolymer composites is investigated. Dense and compact matrix was prepared replacing metakaolin with pegmatite in the range of 70–85 wt% and activate with sodium hydroxide/sodium silicate solution in 1:1 vol ratio. The products of geopolymerization, cured at room temperature for 28 days, were heated at 100, 200, 400, 600, 800, 900, 1000 and 1100 °C with 2 h soaking time. The high values of flexural strength (46–51 MPa) were observed at 1000 °C as the consequences of low porosity (173 mm 3/g) and water absorption (4.50–5.62%). The increase of the vitrification at 1100 °C enhanced the liquid phase and develop porosities responsible for reduction of strength. The mechanical properties, microstructural evolution and pore size distribution were found to be influenced by the amount of fine powder of pegmatite (solid solution).
KW - Pegmatite
KW - Mechanical strength
KW - Geopolymer composites
KW - Pore-size distribution
UR - http://www.scopus.com/inward/record.url?scp=85098088444&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.122032
DO - 10.1016/j.conbuildmat.2020.122032
M3 - Article
VL - 273
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
M1 - 122032
ER -