What does this research mean for the field?

The durability and interfacial bonding of vegetable fiber-reinforced geopolymer composites are strongly governed by matrix alkalinity and fiber treatment, with sodium hydroxide-treated fibers demonstrating improved strength retention in lower free alkali matrices, whereas hornified fibers suffer severe degradation. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the interfacial adhesion, chemical degradation, and mechanical performance of natural and treated sisal fibers embedded in sustainable geopolymer matrices made from fiber cement waste and metakaolin.

August 24, 2026Materials and StructuresOpen Access

Adhesion between geopolymer matrix and vegetable fibers: effect of matrix composition and fiber treatment

View Full Paper

Ask AI

Bookmark

Authors

HSHenrique A. Santana PLPaulo Roberto Lopes Lima CDCléber Marcos Ribeiro Dias

Discussion

Member takes

Overview

Experimental study demonstrates that matrix alkalinity and chemical treatments govern sisal fiber degradation and interfacial adhesion in geopolymer composites, highlighting the need for...

Key Points

To evaluate the interfacial adhesion, chemical degradation, and mechanical performance of natural and treated sisal fibers embedded in sustainable geopolymer matrices made from fiber cement waste and metakaolin.
Exposed natural, hornified, and sodium hydroxide–treated sisal fibers for 28 days to geopolymer matrices formulated with varying free alkali contents.
Assessed fiber-matrix durability and bonding via thermogravimetric analysis, scanning electron microscopy, tensile tests, and single-fiber pull-out testing.
Thermal stability declined across all exposed fibers, with cellulose decomposition peaks shifting downward by up to −63 °C in highly aggressive, high-alkali matrices.
Hornified fibers suffered severe alkaline hydrolysis and lost mechanical integrity, whereas sodium hydroxide–treated fibers retained superior tensile strength in lower free alkali environments.
Interfacial pull-out tests revealed premature fiber rupture in high-alkalinity matrices, compared to gradual pull-out behavior in less aggressive formulations.

Cite This Study

Santana et al. (2026) studied this question.

synapsesocial.com/papers/6a8c0086bca056c88e6df3f6 https://doi.org/10.1617/s11527-026-03229-8

View Full Paper

Ask AI

Bookmark

August 24, 2026Materials and StructuresOpen Access

Adhesion between geopolymer matrix and vegetable fibers: effect of matrix composition and fiber treatment

View Full Paper

Ask AI

Bookmark

Authors

HSHenrique A. Santana PLPaulo Roberto Lopes Lima CDCléber Marcos Ribeiro Dias

Discussion

Member takes

Overview

Experimental study demonstrates that matrix alkalinity and chemical treatments govern sisal fiber degradation and interfacial adhesion in geopolymer composites, highlighting the need for...

Key Points

To evaluate the interfacial adhesion, chemical degradation, and mechanical performance of natural and treated sisal fibers embedded in sustainable geopolymer matrices made from fiber cement waste and metakaolin.
Exposed natural, hornified, and sodium hydroxide–treated sisal fibers for 28 days to geopolymer matrices formulated with varying free alkali contents.
Assessed fiber-matrix durability and bonding via thermogravimetric analysis, scanning electron microscopy, tensile tests, and single-fiber pull-out testing.
Thermal stability declined across all exposed fibers, with cellulose decomposition peaks shifting downward by up to −63 °C in highly aggressive, high-alkali matrices.
Hornified fibers suffered severe alkaline hydrolysis and lost mechanical integrity, whereas sodium hydroxide–treated fibers retained superior tensile strength in lower free alkali environments.
Interfacial pull-out tests revealed premature fiber rupture in high-alkalinity matrices, compared to gradual pull-out behavior in less aggressive formulations.

Cite This Study

Santana et al. (2026) studied this question.

synapsesocial.com/papers/6a8c0086bca056c88e6df3f6 https://doi.org/10.1617/s11527-026-03229-8

View Full Paper

Ask AI

Bookmark