Scholarlink

Among the novel technologies for the external reinforcement of masonry structures, Composite Reinforced Mortar (CRM), consisting of a pre-cured FRP mesh and a mortar overlay, has proved particularly advantageous and has already been widely applied in the field. Despite the crucial importance of ensuring the long-term effectiveness of the reinforcement system, efficient solutions for control and monitoring have not been developed yet and there are no guidelines that help achieve this strategic goal. Detachments, deterioration mechanisms associated with the interaction with the substrate, cracking or local strain concentrations need to be monitored to assure the safety of the CRM-retrofitted structure along its service life and to plan/rank prompt and focused maintenance interventions. This paper presents a laboratory study on a prototype CRM—Fibre Bragg Grating (FBG) integrated system. FBG sensors are glued by epoxy resin to the FRP mesh and provide its axial strain. Following a preliminary investigation on FRP bare mesh, direct tensile tests were carried out on prismatic (coupon) CRM specimens equipped with FBG sensors in different locations. The deformations recorded by FBG were validated against those detected by Digital Image Correlation (DIC). The comparison provided information on the reliability of the proposed integrated monitoring-reinforcement system, even at mortar cracking and under repeated unloading-reloading cycles.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Direct Tensile Tests on a CRM-FBG Integrated System for the Reinforcement and the Structural Health Monitoring of Masonry Structures

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Stefano De Santis,
  • Giovanni Moretti,
  • Michele Arturo Caponero,
  • Sara Fares,
  • Florin Cristinel Stan,
  • Cristina Mazzotta,
  • Diego Dell’Erba,
  • Vincenzo Giannetto,
  • Marika Volpe

摘要

Among the novel technologies for the external reinforcement of masonry structures, Composite Reinforced Mortar (CRM), consisting of a pre-cured FRP mesh and a mortar overlay, has proved particularly advantageous and has already been widely applied in the field. Despite the crucial importance of ensuring the long-term effectiveness of the reinforcement system, efficient solutions for control and monitoring have not been developed yet and there are no guidelines that help achieve this strategic goal. Detachments, deterioration mechanisms associated with the interaction with the substrate, cracking or local strain concentrations need to be monitored to assure the safety of the CRM-retrofitted structure along its service life and to plan/rank prompt and focused maintenance interventions. This paper presents a laboratory study on a prototype CRM—Fibre Bragg Grating (FBG) integrated system. FBG sensors are glued by epoxy resin to the FRP mesh and provide its axial strain. Following a preliminary investigation on FRP bare mesh, direct tensile tests were carried out on prismatic (coupon) CRM specimens equipped with FBG sensors in different locations. The deformations recorded by FBG were validated against those detected by Digital Image Correlation (DIC). The comparison provided information on the reliability of the proposed integrated monitoring-reinforcement system, even at mortar cracking and under repeated unloading-reloading cycles.