<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Silva, Manuel A. G.</style></author><author><style face="normal" font="default" size="100%">Biscaia, Hugo</style></author><author><style face="normal" font="default" size="100%">Chastre, Carlos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of Temperature Cycles on Bond between GFRP and Concrete</style></title><secondary-title><style face="normal" font="default" size="100%">ACI Structural Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.14359/51686153</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">110</style></volume><pages><style face="normal" font="default" size="100%">977-988</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Reinforced concrete (RC) beams externally strengthened with glass fiber-reinforced polymer (GFRP) strips bonded to the soffit may see their load-carrying capacity reduced due to environmental conditions—especially due to the deterioration of bond between the adhesively bonded laminates and concrete, causing premature failure.&lt;br /&gt;
More research has been published on the detachment of the laminate progressing from the anchorage zone than on failure induced by the formation of flexural or shear-flexural cracks in the midspan followed by fiber-reinforced polymer (FRP) separation and failure designated as intermediate crack (IC) debonding. An experimental program to study degradation of the GFRP laminate beam specimens after accelerated temperature cycles, namely: 1) freezing-and-thawing type; and 2) cycles of the same amplitude (40°C [104°F]) and an upper limit approximately 70% of the glass vitreous transition temperature of the resin, Tg, is described.&lt;br /&gt;
Effects on the bond stress and ultimate capacity are reported. Substantial differences between shear and bending-induced failure and a decrease of bond stresses and engagement of the laminates on the structural response are analyzed.&lt;/p&gt;
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