In order to verify the effects of extreme environmental conditions, on the durability of the epoxy resin and on the mechanical behaviour of full scale ordinary steel-timber joints, different epoxy specimens and timber joints were exposed to various conditions and ageing cycles: immersion in water (demineralized and swimming pool water), high and low temperature treatments cycles, treatments at different temperature and RH. Epoxy specimens showed transformation only in the case of immersion in swimming pool water. Full scale timber joints showed a shear strength variation due only to the moisture content variation between 12-24%. Joints submerged in water showed a strength reduction higher than the one expected for the reached moisture content, demonstrating that extreme conditions affect not only the timber strength, but also the performance of the full joints.
Mechanical performance of full scale steel-timber epoxy joints after exposure to extreme environmental conditions / Alberto Cavalli; Marino Malavolti; Alessandro Morosini; Antonella Salvini; Marco Togni. - In: INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES. - ISSN 0143-7496. - ELETTRONICO. - 54:(2014), pp. 86-92. [10.1016/j.ijadhadh.2014.05.005]
Mechanical performance of full scale steel-timber epoxy joints after exposure to extreme environmental conditions
CAVALLI, ALBERTO;MALAVOLTI, MARINO;SALVINI, ANTONELLA;TOGNI, MARCO
2014
Abstract
In order to verify the effects of extreme environmental conditions, on the durability of the epoxy resin and on the mechanical behaviour of full scale ordinary steel-timber joints, different epoxy specimens and timber joints were exposed to various conditions and ageing cycles: immersion in water (demineralized and swimming pool water), high and low temperature treatments cycles, treatments at different temperature and RH. Epoxy specimens showed transformation only in the case of immersion in swimming pool water. Full scale timber joints showed a shear strength variation due only to the moisture content variation between 12-24%. Joints submerged in water showed a strength reduction higher than the one expected for the reached moisture content, demonstrating that extreme conditions affect not only the timber strength, but also the performance of the full joints.File | Dimensione | Formato | |
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