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This research explores how combining SBR latex and polypropylene fibers impacts the mechanical and bond properties of repair mortar.

Synergistic effects of polymer and fibers on the interfacial bond, mechanical properties, and dimensional stability of structural repair mortar

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This research explores how combining SBR latex and polypropylene fibers impacts the mechanical and bond properties of repair mortar.
Evaluated the effects of 2% SBR and 0.5% PP fibers on workability, setting time, compressive and flexural strengths, drying shrinkage, and bond strength.
Microstructural analysis was conducted to assess improvements in dimensional stability.
Polymer addition prolonged setting time and improved workability but reduced compressive strength by up to 45%.
Incorporating PP fibers improved compressive strength by 9.7% compared to polymer-only modifications.
The combined use of polymer and fiber enhanced flexural and bond strength by 11% and reduced drying shrinkage by 14% at 28 days.

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Randomized trial evaluates combined polymer and fiber effects on repair mortar properties, suggesting enhanced performance.

Dutta et al. (2026) studied this question.

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