Results of an experimental campaign concerning the long-term behavior of FRP plates bonded to concrete are presented. Four CFRP plates with three different bonded lengths (from 100 mm to 400 mm) have been subject to long-term constant traction force. The tests have been carried out in a climatic room with a constant temperature T=20°C and humidity RH=60%, for about five years. The strain profile evolution with time along the bonded length has been recorded by using a number of strain gauges along the plates. An appreciable stress redistribution with time along the plate has been observed. At the end of the long-term test, all specimens have been subjected to failure load in order to verify if the interface behaviour was affected by the long-term loading application. No remarkable degradation has been found.
The effect of long-term loading on the CFRP-concrete bonding strength / C. Mazzotti; M. Savoia. - STAMPA. - (2011), pp. 119-127. (Intervento presentato al convegno CDCC 2011 Fourth International Conference on Durability & Sustainability of FRP Composites for Construction and Rehabilitation tenutosi a Quebec City, Quebec, Canada nel 20/07/2011 - 22/07/2011).
The effect of long-term loading on the CFRP-concrete bonding strength
MAZZOTTI, CLAUDIO;SAVOIA, MARCO
2011
Abstract
Results of an experimental campaign concerning the long-term behavior of FRP plates bonded to concrete are presented. Four CFRP plates with three different bonded lengths (from 100 mm to 400 mm) have been subject to long-term constant traction force. The tests have been carried out in a climatic room with a constant temperature T=20°C and humidity RH=60%, for about five years. The strain profile evolution with time along the bonded length has been recorded by using a number of strain gauges along the plates. An appreciable stress redistribution with time along the plate has been observed. At the end of the long-term test, all specimens have been subjected to failure load in order to verify if the interface behaviour was affected by the long-term loading application. No remarkable degradation has been found.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
