We discuss the effect of environmental exposure on mechanical performance of impregnated Carbon Fabric Reinforced Cementitious Matrix (CFRCM) composite. Following the recently published ICC-ES AC434 guidelines, mechanical performance of prismatic composite specimens is determined on the basis of tensile uni-axial tests. Exposure to saline and alkaline aqueous solutions is considered at 28- as well as 60-day curing time. Special emphasis is placed on crack pattern evaluation as a mean to gain better insight into matrix/fabric bond quality. To this aim, the evolution of the average crack spacing and of the average crack width is determined as a function of strain for all test environments and curing times. It is found that curing time plays a significant role in mitigating the detrimental effect of aggressive environments. Furthermore, the average crack spacing provides a very reliable measure of matrix/fabric bond degradation at all test stages.

Mechanical performance and crack pattern analysis of aged Carbon Fabric Cementitious Matrix (CFRCM) composites / Signorini, Cesare; Nobili, Andrea; Falope, Federico O.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - 202:(2018), pp. 1114-1120. [10.1016/j.compstruct.2018.05.052]

Mechanical performance and crack pattern analysis of aged Carbon Fabric Cementitious Matrix (CFRCM) composites

Signorini, Cesare
Membro del Collaboration Group
;
Nobili, Andrea
Formal Analysis
;
Falope, Federico O.
Investigation
2018

Abstract

We discuss the effect of environmental exposure on mechanical performance of impregnated Carbon Fabric Reinforced Cementitious Matrix (CFRCM) composite. Following the recently published ICC-ES AC434 guidelines, mechanical performance of prismatic composite specimens is determined on the basis of tensile uni-axial tests. Exposure to saline and alkaline aqueous solutions is considered at 28- as well as 60-day curing time. Special emphasis is placed on crack pattern evaluation as a mean to gain better insight into matrix/fabric bond quality. To this aim, the evolution of the average crack spacing and of the average crack width is determined as a function of strain for all test environments and curing times. It is found that curing time plays a significant role in mitigating the detrimental effect of aggressive environments. Furthermore, the average crack spacing provides a very reliable measure of matrix/fabric bond degradation at all test stages.
2018
9-mag-2018
202
1114
1120
Mechanical performance and crack pattern analysis of aged Carbon Fabric Cementitious Matrix (CFRCM) composites / Signorini, Cesare; Nobili, Andrea; Falope, Federico O.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - 202:(2018), pp. 1114-1120. [10.1016/j.compstruct.2018.05.052]
Signorini, Cesare; Nobili, Andrea; Falope, Federico O.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1161581
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