Details
| Original language | English |
|---|---|
| Article number | 124602 |
| Journal | Materials chemistry and physics |
| Volume | 267 |
| Early online date | 13 Apr 2021 |
| Publication status | Published - 15 Jul 2021 |
| Externally published | Yes |
Abstract
This research reports on the influence of particle size and distribution on the physical, mechanical and microstructural features of solid solutions (feldspathic materials) based inorganic polymer composites (IPCs). Both granite and pegmatite were ground to different degree of finess making four different granulometry with particles of 63, 80, 125 and 200 μm. The respective mixes receive 15 wt% of metakaolin and were activated with a well designed alkaline solution. Matrices obtained showed high compressive and flexural strengths in the range 101.2–131.3 MPa, and 29–35.5 MPa, respectively. It was observed that the optimum mechanical performance of these matrices can be achieved through a mix-design of different grades of granulometry. This was suggested by mechanism combining reactivity and particles packing. In fact, although it can be expected that the finess of the combination of the particles size under 63 μm might present the better reactivity, it is showing that the combination of fine, medium and coarse particles is efficient in achieving denser and tougher microstructure. Lower cumulative pore volume (17 mL g−1) of the composites based on pegmatite, value not far from that of natural stones, resulted in a higher impact resistance of 3.03 J. It was concluded that designing the feldspathic rock-based composites with high strengths appear as sustainable, low energy consumption and environmentally-friendly materials for the structural construction.
Keywords
- Impact strength, Low porosity, Microstructure, Particles packing, Particles size distribution, Solid solution
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
Sustainable Development Goals
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In: Materials chemistry and physics, Vol. 267, 124602, 15.07.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Particles size and distribution on the improvement of the mechanical performance of high strength solid solution based inorganic polymer composites
T2 - A microstructural approach
AU - Nana, Achile
AU - Kamseu, Elie
AU - Akono, Ange Therese
AU - Ngouné, Jean
AU - Yankwa Djobo, Jean Noel
AU - Tchakouté, Hervé Kouamo
AU - Bognozzi, Maria Chiara
AU - Leonelli, Cristina
N1 - Publisher Copyright: © 2021 Elsevier B.V.
PY - 2021/7/15
Y1 - 2021/7/15
N2 - This research reports on the influence of particle size and distribution on the physical, mechanical and microstructural features of solid solutions (feldspathic materials) based inorganic polymer composites (IPCs). Both granite and pegmatite were ground to different degree of finess making four different granulometry with particles of 63, 80, 125 and 200 μm. The respective mixes receive 15 wt% of metakaolin and were activated with a well designed alkaline solution. Matrices obtained showed high compressive and flexural strengths in the range 101.2–131.3 MPa, and 29–35.5 MPa, respectively. It was observed that the optimum mechanical performance of these matrices can be achieved through a mix-design of different grades of granulometry. This was suggested by mechanism combining reactivity and particles packing. In fact, although it can be expected that the finess of the combination of the particles size under 63 μm might present the better reactivity, it is showing that the combination of fine, medium and coarse particles is efficient in achieving denser and tougher microstructure. Lower cumulative pore volume (17 mL g−1) of the composites based on pegmatite, value not far from that of natural stones, resulted in a higher impact resistance of 3.03 J. It was concluded that designing the feldspathic rock-based composites with high strengths appear as sustainable, low energy consumption and environmentally-friendly materials for the structural construction.
AB - This research reports on the influence of particle size and distribution on the physical, mechanical and microstructural features of solid solutions (feldspathic materials) based inorganic polymer composites (IPCs). Both granite and pegmatite were ground to different degree of finess making four different granulometry with particles of 63, 80, 125 and 200 μm. The respective mixes receive 15 wt% of metakaolin and were activated with a well designed alkaline solution. Matrices obtained showed high compressive and flexural strengths in the range 101.2–131.3 MPa, and 29–35.5 MPa, respectively. It was observed that the optimum mechanical performance of these matrices can be achieved through a mix-design of different grades of granulometry. This was suggested by mechanism combining reactivity and particles packing. In fact, although it can be expected that the finess of the combination of the particles size under 63 μm might present the better reactivity, it is showing that the combination of fine, medium and coarse particles is efficient in achieving denser and tougher microstructure. Lower cumulative pore volume (17 mL g−1) of the composites based on pegmatite, value not far from that of natural stones, resulted in a higher impact resistance of 3.03 J. It was concluded that designing the feldspathic rock-based composites with high strengths appear as sustainable, low energy consumption and environmentally-friendly materials for the structural construction.
KW - Impact strength
KW - Low porosity
KW - Microstructure
KW - Particles packing
KW - Particles size distribution
KW - Solid solution
UR - http://www.scopus.com/inward/record.url?scp=85104289954&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2021.124602
DO - 10.1016/j.matchemphys.2021.124602
M3 - Article
AN - SCOPUS:85104289954
VL - 267
JO - Materials chemistry and physics
JF - Materials chemistry and physics
SN - 0254-0584
M1 - 124602
ER -