Details
| Original language | English |
|---|---|
| Article number | 172 |
| Journal | Archives of Civil and Mechanical Engineering |
| Volume | 25 |
| Issue number | 4 |
| Publication status | Published - 21 May 2025 |
Abstract
The task of this research is to examine the behavior of silica sand powder on the macroscopic properties and the microscopic pore structures of non-calcined and calcined waste-fired brick-based geopolymers. In the R3 reactivity test, calcined waste-fired bricks release 460 J/g, while non-calcined waste-fired bricks release 457 J/g. The findings highlight that the compressive strength of waste-fired clay brick-based geopolymers increases from (44.96 ± 1.17) to (54.45 ± 1.73) MPa after the addition of 30 g of silica sand powder. When 40 g of silica sand is added, it decreases from (54.45 ± 1.73) to (50.71 ± 1.69) MPa. The compressive strength rises from (53.16 ± 1.69) to (64.89 ± 1.96) MPa when 10 g of silica sand powder is added to the calcined waste-fired clay brick. It decreases from (64.89 ± 1.96) to (49.04 ± 1.32) MPa if 40 g of silica sand is added. The mercury intrusion porosimetry results demonstrate that the geopolymers contain mesopores and macropores. The range of pore size diameters of the calcined waste-fired clay brick-based reference geopolymer (5–60 nm) is smaller than that of the waste-fired clay brick-based geopolymer (5–94 nm). It was found that the addition of 30 and 10 g of silica sand powder to geopolymers made from non-calcined and calcined waste-fired clay bricks, respectively, tended to increase siloxane chains, convert macropores into inaccessible finer pores.
Keywords
- Compressive strength, Geopolymer materials, Microscopic pore structure, Silica sand, Surface fractal dimension, Waste fired clay brick
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Mechanical Engineering
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In: Archives of Civil and Mechanical Engineering, Vol. 25, No. 4, 172, 21.05.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of adding silica sand powder on the macroscopic properties and microscopic pore structures of waste-fired clay brick-based geopolymers
AU - Dieuhou, Cédric Mbiakop
AU - Ngnie, Gaëlle
AU - Tchekwagep, Jean Jacques Kouadjo
AU - Mbole, Barbara Rodrigue Eloundou
AU - Tchakouté, Hervé Kouamo
AU - Li, Zihao
AU - Rüscher, Claus Henning
AU - Nanseu-Njiki, Charles Peguy
AU - Hou, Pengkun
N1 - Publisher Copyright: © Wroclaw University of Science and Technology 2025.
PY - 2025/5/21
Y1 - 2025/5/21
N2 - The task of this research is to examine the behavior of silica sand powder on the macroscopic properties and the microscopic pore structures of non-calcined and calcined waste-fired brick-based geopolymers. In the R3 reactivity test, calcined waste-fired bricks release 460 J/g, while non-calcined waste-fired bricks release 457 J/g. The findings highlight that the compressive strength of waste-fired clay brick-based geopolymers increases from (44.96 ± 1.17) to (54.45 ± 1.73) MPa after the addition of 30 g of silica sand powder. When 40 g of silica sand is added, it decreases from (54.45 ± 1.73) to (50.71 ± 1.69) MPa. The compressive strength rises from (53.16 ± 1.69) to (64.89 ± 1.96) MPa when 10 g of silica sand powder is added to the calcined waste-fired clay brick. It decreases from (64.89 ± 1.96) to (49.04 ± 1.32) MPa if 40 g of silica sand is added. The mercury intrusion porosimetry results demonstrate that the geopolymers contain mesopores and macropores. The range of pore size diameters of the calcined waste-fired clay brick-based reference geopolymer (5–60 nm) is smaller than that of the waste-fired clay brick-based geopolymer (5–94 nm). It was found that the addition of 30 and 10 g of silica sand powder to geopolymers made from non-calcined and calcined waste-fired clay bricks, respectively, tended to increase siloxane chains, convert macropores into inaccessible finer pores.
AB - The task of this research is to examine the behavior of silica sand powder on the macroscopic properties and the microscopic pore structures of non-calcined and calcined waste-fired brick-based geopolymers. In the R3 reactivity test, calcined waste-fired bricks release 460 J/g, while non-calcined waste-fired bricks release 457 J/g. The findings highlight that the compressive strength of waste-fired clay brick-based geopolymers increases from (44.96 ± 1.17) to (54.45 ± 1.73) MPa after the addition of 30 g of silica sand powder. When 40 g of silica sand is added, it decreases from (54.45 ± 1.73) to (50.71 ± 1.69) MPa. The compressive strength rises from (53.16 ± 1.69) to (64.89 ± 1.96) MPa when 10 g of silica sand powder is added to the calcined waste-fired clay brick. It decreases from (64.89 ± 1.96) to (49.04 ± 1.32) MPa if 40 g of silica sand is added. The mercury intrusion porosimetry results demonstrate that the geopolymers contain mesopores and macropores. The range of pore size diameters of the calcined waste-fired clay brick-based reference geopolymer (5–60 nm) is smaller than that of the waste-fired clay brick-based geopolymer (5–94 nm). It was found that the addition of 30 and 10 g of silica sand powder to geopolymers made from non-calcined and calcined waste-fired clay bricks, respectively, tended to increase siloxane chains, convert macropores into inaccessible finer pores.
KW - Compressive strength
KW - Geopolymer materials
KW - Microscopic pore structure
KW - Silica sand
KW - Surface fractal dimension
KW - Waste fired clay brick
UR - http://www.scopus.com/inward/record.url?scp=105005597502&partnerID=8YFLogxK
U2 - 10.1007/s43452-025-01222-6
DO - 10.1007/s43452-025-01222-6
M3 - Article
AN - SCOPUS:105005597502
VL - 25
JO - Archives of Civil and Mechanical Engineering
JF - Archives of Civil and Mechanical Engineering
SN - 1644-9665
IS - 4
M1 - 172
ER -