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ORIGINAL RESEARCH article

Front. Built Environ.
Sec. Construction Materials
Volume 10 - 2024 | doi: 10.3389/fbuil.2024.1479849
This article is part of the Research Topic Advances in Fiber-Reinforced Polymer Composites for Civil Engineering Applications View all articles

Repair overlays of Modified Polymer Mortar Containing Glass Powder and Composite Fibers-Reinforced Slag: Mechanical properties, Energy absorption, and Adhesion to Substrate Concrete

Provisionally accepted
Tesfaldet H. Gebre Tesfaldet H. Gebre 1Komeil Momeni Komeil Momeni 2Nikolai Ivanovich Vatin Nikolai Ivanovich Vatin 1,3*Mohammad Hematibahar Mohammad Hematibahar 4
  • 1 Peoples' Friendship University of Russia, Moscow, Russia
  • 2 Department of Civil Engineering, Technical and Vocational University, Tehran, Iran
  • 3 Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Saint Petersburg, Russia
  • 4 Moscow Institute of Civil Engineering, Moscow, Moscow, Russia

The final, formatted version of the article will be published soon.

    This article aims to investigate the mechanical properties and substrate adhesion of the pulloff method in polymer mortars modified with styrene-butadiene resin polymer (SBR) containing glass powder and composite fiber-reinforced slag. Different mix designs were investigated with and without SBR, taking into account different amounts of glass powder and slag separately and in combination, along with the effect of glass, polypropylene, and steel fibers alone and in combination. The flexural performance and energy absorption of beams retrieved with these layers were also assessed. The results revealed significant differences and increases in the substrate adhesion of the restored modified polymer layers containing SBR compared to the polymer-free repair overlays. Furthermore, an improvement was observed in the adhesion performance of the repair overlay using a combination of slag and glass powder and the glass and polypropylene fiber composite. The highest adhesion was related to the modified polymer mortar design containing composite fibers of glass, polypropylene, and steel with 25% replacement of SBR polymer for 10% glass powder, 10% slag, and 5% slag with 5% glass powder. The adhesion was increased by about 3.74, 3.72, and 3.78 times compared to the repair overlay of the control design. Modified polymer mortars had a higher 𝑇 150 𝐷 toughness. Moreover, the energy absorption was significantly improved by the presence of SBR polymer. The highest toughness values were found in the beams restored with modified polymer mortars containing polypropylene, glass, and steel composite fibers with an increase of 48.51 to 66.42% compared to the samples without polymer as a result of the pozzolans used in this mix.

    Keywords: Modified polymer mortar, SBR, Energy absorption, Bonding strength, Fibers.

    Received: 12 Aug 2024; Accepted: 23 Sep 2024.

    Copyright: © 2024 Gebre, Momeni, Vatin and Hematibahar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Nikolai Ivanovich Vatin, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, 195251, Saint Petersburg, Russia

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.