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<p>Composites are deformed by multiple cracks without any sudden failure, which is the most important feature, and their use as building elements is becoming widespread. The ability of composites to deform through multiple cracking without sudden failure is a key feature, and their use as building elements is becoming increasingly widespread. However, the need for specialized fiber production considerably limits the application of such reinforcements. In this study, the performance of engineered cementitious composites reinforced with Polyvinyl alcohol (PVA) fibers and dioctyl terephthalate fibers was investigated. Graphene oxide and activated carbon were also used to modify hybrid fibers for enhancing performance. It has been observed that when 3% by volume dioctyl terephthalate—polyvinyl alcohol—activated carbon (DOT-PVA-AC) fibers were used, the compressive strength, flexural strength, and fracture toughness increased by 64.06%, 281.58%, and 106.14%, respectively, compared with the control specimen. More durable cementitious composites were obtained due to the improved resistance to sulfuric acid attack provided by containing methyl groups, while PVA and AC blended fibers with internal curing ability helped control crack propagation.</p>

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Properties of hybridized PVA fiber reinforced new generation engineered cementitious composites containing dioctyl terephthalate

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月29日

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  • Özge Eryeşil,
  • Özge Bildi Ceran,
  • Barış Şimşek,
  • Tayfun Uygunoğlu

摘要

Composites are deformed by multiple cracks without any sudden failure, which is the most important feature, and their use as building elements is becoming widespread. The ability of composites to deform through multiple cracking without sudden failure is a key feature, and their use as building elements is becoming increasingly widespread. However, the need for specialized fiber production considerably limits the application of such reinforcements. In this study, the performance of engineered cementitious composites reinforced with Polyvinyl alcohol (PVA) fibers and dioctyl terephthalate fibers was investigated. Graphene oxide and activated carbon were also used to modify hybrid fibers for enhancing performance. It has been observed that when 3% by volume dioctyl terephthalate—polyvinyl alcohol—activated carbon (DOT-PVA-AC) fibers were used, the compressive strength, flexural strength, and fracture toughness increased by 64.06%, 281.58%, and 106.14%, respectively, compared with the control specimen. More durable cementitious composites were obtained due to the improved resistance to sulfuric acid attack provided by containing methyl groups, while PVA and AC blended fibers with internal curing ability helped control crack propagation.