Fracture toughness of geopolymeric concretes reinforced with basalt fibers

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• 作者：Dias ; Dylmar Penteado ; Thaumaturgo ; Clelio
• 关键词：Geopolymeric cement ; Fracture toughness ; Critical stress intensity factor ; Critical crack mouth opening displacement ; Notched beams ; Basalt fibers
• 刊名：Cement and Concrete Composites
• 出版年：2005
• 期刊代码：11_09589465
• 类别：ms
• 出版时间：January, 2005
• 卷：27
• 期：1
• 页码：49-54
• 文件大小：358 K

摘要

The purpose of this work was to investigate the influence of the volumetric fraction of the fibers on the fracture toughness of geopolymeric cement concretes reinforced with basalt fibers. The values of fracture toughness, critical stress intensity factor and critical crack mouth opening displacement were measured on 18 notched beams tested by three-point bending. The a₀/h (notch height/beam height) ratio was equal to 0.2 and the L₀/h (distance between the supports/beam height) ratio was equal to 3.