Khaled Abd-Allah Mohamed Gharib
Lecturer
Towards enhancing the sustainability of hybrid self‑compacting concrete with glass powder, silica slurry, and polyolefn fbers
Materials and Structures • 2025
Publication Information
Authors
Khaled Abd‑allah Gharib · Amr Aly Gamal‑eldin · Mohamed I. Serag ·
Mohamed O. R. Elhariri · Mohamed A. S. Abd‑Elmageed
Keywords
Self-compacting concrete · Fine glass
powder · Polyolefn fbers · Sustainable construction
Journal
Materials and Structures
Publisher
Spring Nature
Volume
58
Issue
337 (2025)
Pages
Not Available
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
Sustainable construction requires
advanced materials that minimize environmental damage. This research explores the interaction
among fne glass powder (FGP), coarse glass powder
(CGP), silica slurry (SS), and polyolefn fbers (PF)
in self-compacting concrete (SCC). The optimum
combination (15% FGP, 5% SS, 1% PF) improved
fow by 17% without reducing strength or causing
segregation. Mechanical performance improved signifcantly: 45.24% enhanced compressive strength,
25.79% increased tensile strength at 28 days, and
80.75% increased fexural strength at 28 days. Durability testing showed 35.7% reduced sorptivity. The
microstructure examination (SEM, XRD, stereo
microscopy) confrmed a denser structure with fewer
voids, increased C-S–H gel formation, and improved
pore structure. PF improved post-cracking performance through microcrack bridging, while FGP
and SS assisted in making the matrix denser. CGP
ofered an economic alternative with only a 4.76%
loss in strength. The study establishes two sustainable
approaches: a high-performance FGP solution and a
cost-efective CGP alternative, advancing sustainable
construction through efective waste utilization.
advanced materials that minimize environmental damage. This research explores the interaction
among fne glass powder (FGP), coarse glass powder
(CGP), silica slurry (SS), and polyolefn fbers (PF)
in self-compacting concrete (SCC). The optimum
combination (15% FGP, 5% SS, 1% PF) improved
fow by 17% without reducing strength or causing
segregation. Mechanical performance improved signifcantly: 45.24% enhanced compressive strength,
25.79% increased tensile strength at 28 days, and
80.75% increased fexural strength at 28 days. Durability testing showed 35.7% reduced sorptivity. The
microstructure examination (SEM, XRD, stereo
microscopy) confrmed a denser structure with fewer
voids, increased C-S–H gel formation, and improved
pore structure. PF improved post-cracking performance through microcrack bridging, while FGP
and SS assisted in making the matrix denser. CGP
ofered an economic alternative with only a 4.76%
loss in strength. The study establishes two sustainable
approaches: a high-performance FGP solution and a
cost-efective CGP alternative, advancing sustainable
construction through efective waste utilization.