The use of fabric-reinforced cementitious matrix (FRCM) composites for strengthening and retrofitting existing masonry structures is nowadays a well-established practice, due to its speed and ease of application, low invasiveness, and high performance-to-cost ratio. Among different FRCMs, those comprising glass fiber textiles (GFRCM) represent an excellent choice due to the good mechanical properties and low cost of the raw material. However, limited information is available on the effect of environmental conditions on the performance of GFRCM composites and on their long-term behavior. This paper investigates the effect of different environmental conditions on the tensile performance of a GFRCM composite comprised of a cement-based matrix reinforced with an open-mesh alkali-resistant glass textile. Namely, the effect of hygrothermal conditioning, saline environment, alkali environment, freeze-thaw cycles, and dry heat conditioning were considered. After conditioning, specimens were tested using a clamping-grip tensile test configuration and the effect of the various exposures was analyzed comparing the composite tensile strength, ultimate strain, and elastic modulus of conditioned and control specimens. The experimental results show a good performance of the tested GFRCM composite with respect to the conditions considered.

Durability of a Glass Fabric-Reinforced Cementitious Matrix Composite under Different Environmental Conditions

Calabrese A. S.;D'antino T.;Colombi P.;Poggi C.
2022-01-01

Abstract

The use of fabric-reinforced cementitious matrix (FRCM) composites for strengthening and retrofitting existing masonry structures is nowadays a well-established practice, due to its speed and ease of application, low invasiveness, and high performance-to-cost ratio. Among different FRCMs, those comprising glass fiber textiles (GFRCM) represent an excellent choice due to the good mechanical properties and low cost of the raw material. However, limited information is available on the effect of environmental conditions on the performance of GFRCM composites and on their long-term behavior. This paper investigates the effect of different environmental conditions on the tensile performance of a GFRCM composite comprised of a cement-based matrix reinforced with an open-mesh alkali-resistant glass textile. Namely, the effect of hygrothermal conditioning, saline environment, alkali environment, freeze-thaw cycles, and dry heat conditioning were considered. After conditioning, specimens were tested using a clamping-grip tensile test configuration and the effect of the various exposures was analyzed comparing the composite tensile strength, ultimate strain, and elastic modulus of conditioned and control specimens. The experimental results show a good performance of the tested GFRCM composite with respect to the conditions considered.
Key Engineering Materials
978-3-0364-1049-4
Durability
FRCM
Glass fiber
Tensile characterization
File in questo prodotto:
File Dimensione Formato  
Calabrese_et_al_2022_KEM-durability.pdf

Accesso riservato

: Publisher’s version
Dimensione 587.43 kB
Formato Adobe PDF
587.43 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1220116
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact