Mechanical properties of alkali activated geopolymer cement mortar for non vibratory compacted trench backfilling DOI Creative Commons
Jizhou Duan, Hao Li,

Haolong Guo

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 10, 2025

In this study, fly ash and metakaolin are examined as replacements in cementitious materials to reduce environmental pollution. An orthogonal test was conducted with nine groups of geopolymer mortars prepared by varying the ratio amount composite alkali activator (NaOH-Na2SiO3). The optimal mortar its feasibility a non-vibrated pipe trench backfill were using fluidity mechanical property tests. Combined microscopic tests, pore structure hydrate phase analysed. results showed that 30% (F30), 10% (M10), 4% (A4) had best performance achieved compressive flexural strengths 17.2 MPa 5.55 MPa, respectively, 157 mm; these meet requirements for materials. addition, according strength comparison different groups, better effect on properties material than ash. Microscopic analysis revealed hydratable substances such potassium feldspar montmorillonite decomposed under action OH- formed C-(A)-S-H N-A-S-H gels, along A-type zeolite crystals; improved density mortar. This study provides valuable insights into potential use alkali-activated vibration-free pipeline trenches.

Language: Английский

Study on the solidification/stabilization of Cu(II) and Cd(II)-contaminated soil by fly ash-red mud based geopolymer DOI

Haojie Hao,

Xiaofeng Liu, Xiaoqiang Dong

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 469, P. 140515 - 140515

Published: Feb. 22, 2025

Language: Английский

Citations

1
Life Cycle Assessment of Phosphogypsum as Filler Material for Coal Fly Ash-Based Geopolymer DOI

Jacob Louies Rohi Wenceslao Paulo,

Michelle Airah Pablo,

Joshua Pocaan

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Mechanical properties of alkali activated geopolymer cement mortar for non vibratory compacted trench backfilling DOI Creative Commons
Jizhou Duan, Hao Li,

Haolong Guo

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 10, 2025

In this study, fly ash and metakaolin are examined as replacements in cementitious materials to reduce environmental pollution. An orthogonal test was conducted with nine groups of geopolymer mortars prepared by varying the ratio amount composite alkali activator (NaOH-Na2SiO3). The optimal mortar its feasibility a non-vibrated pipe trench backfill were using fluidity mechanical property tests. Combined microscopic tests, pore structure hydrate phase analysed. results showed that 30% (F30), 10% (M10), 4% (A4) had best performance achieved compressive flexural strengths 17.2 MPa 5.55 MPa, respectively, 157 mm; these meet requirements for materials. addition, according strength comparison different groups, better effect on properties material than ash. Microscopic analysis revealed hydratable substances such potassium feldspar montmorillonite decomposed under action OH- formed C-(A)-S-H N-A-S-H gels, along A-type zeolite crystals; improved density mortar. This study provides valuable insights into potential use alkali-activated vibration-free pipeline trenches.

Language: Английский

Citations

0