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A platform for research: civil engineering, architecture and urbanism
Creep and shrinkage behaviour of CFRP-reinforced mortar
Graphical abstract The presence of composite plates reduces the strain’s creep of mortar specimens tested at the age of 7days. The strains decreased by 67% for the mortar strengthened on the 4 side faces. Display Omitted Highlights ► The presence of composite plates reduces drastically the mortar creep strains. ► The use of CFRP plates limits the propagation of cracks and reduces creep kinetics. ► There is no evidence of shrinkage reduction due to the reinforcement. ► Accurate predictions of experimental results are obtained by shrinkage modelling.
Abstract This paper deals with the reinforcement of mortar with external composite materials. The mortar specimens were strengthened with CFRP (Carbon Fibres Reinforced Polymer) plates on two or four faces. Creep tests were run for 7 or 28days with applied stress level at 30% of ultimate stress. Experimental results show a clear improvement of short-term creep behaviour for the reinforced mortar. There is no evidence of shrinkage reduction due to the reinforcement. Drying is modelled using a non linear diffusion equation and shrinkage is numerically calculated. In both cases, accurate predictions of experimental results were obtained.
Creep and shrinkage behaviour of CFRP-reinforced mortar
Graphical abstract The presence of composite plates reduces the strain’s creep of mortar specimens tested at the age of 7days. The strains decreased by 67% for the mortar strengthened on the 4 side faces. Display Omitted Highlights ► The presence of composite plates reduces drastically the mortar creep strains. ► The use of CFRP plates limits the propagation of cracks and reduces creep kinetics. ► There is no evidence of shrinkage reduction due to the reinforcement. ► Accurate predictions of experimental results are obtained by shrinkage modelling.
Abstract This paper deals with the reinforcement of mortar with external composite materials. The mortar specimens were strengthened with CFRP (Carbon Fibres Reinforced Polymer) plates on two or four faces. Creep tests were run for 7 or 28days with applied stress level at 30% of ultimate stress. Experimental results show a clear improvement of short-term creep behaviour for the reinforced mortar. There is no evidence of shrinkage reduction due to the reinforcement. Drying is modelled using a non linear diffusion equation and shrinkage is numerically calculated. In both cases, accurate predictions of experimental results were obtained.
Creep and shrinkage behaviour of CFRP-reinforced mortar
Khadraoui, Fouzia (author)
Construction and Building Materials ; 28 ; 282-286
2011-07-23
5 pages
Article (Journal)
Electronic Resource
English
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