Influence of natural fibers characteristics on the interface mechanics with cement based matrices

被引：109

作者：

Ferreira, Saulo Rocha ^{[1
,2
]}

Pepe, Marco ^{[3
]}

Martinelli, Enzo ^{[3
]}

Silva, Flavio de Andrade ^{[4
]}

Toledo Filho, Romildo Dias ^{[2
]}

机构：

[1] Univ Fed Lavras, Dept Engn, Lavras, MG, Brazil

[2] Univ Fed Rio de Janeiro, COPPE, Civil Engn Dept, BR-21941972 Rio De Janeiro, RJ, Brazil

[3] Univ Salerno, Dept Civil Engn, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy

[4] Pontificia Univ Catolica Rio De Janeiro PUC Rio, Civil Engn Dept, BR-22451900 Rio De Janeiro, RJ, Brazil

来源：

COMPOSITES PART B-ENGINEERING | 2018年 / 140卷

关键词：

Fibres; Fibre/matrix bond; Analytical modelling; Mechanical testing; CELLULOSIC FIBERS; COMPOSITES; BEHAVIOR; PERFORMANCE; BOND; IDENTIFICATION; CONCRETE; STRENGTH; SHAPE;

D O I：

10.1016/j.compositesb.2017.12.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The use of Natural Fibers in cementitious composites is an innovative technical solution but, they are characterized by a complex microstructure and significant heterogeneity, which influence their interaction with cementitious matrices, whose identification requires further advances in the current state of knowledge. The present study summarizes the results of a wide series of pull-out tests carried out on sisal, curaua and jute fibers. Then, the experimental results are employed in an inverse identification procedure aimed at unveiling the key features of the aforementioned bond-slip laws. Morphological, chemical, physical and mechanical characterization of the natural fibers were correlated with the resulting bond properties within the embedding matrix. The obtained results in terms of relevant parameters, such as bond strength and fracture energy (under pull-out stresses) of the fiber-matrix interface, pave the way for future studies intended for a better understanding of the structural response of Natural Fiber Reinforced Cementitious Composites.

引用

页码：183 / 196

页数：14

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