Assessment of the toughness of fibre-reinforced concrete using the R-curve approach

被引：7
|
作者：
Stephen, Stefie J. [1 ]
Gettu, Ravindra [1 ]
Teixeira Ferreira, Luiz Eduardo [2 ]
Jose, Sujatha [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Civil Engn, Chennai 600036, Tamil Nadu, India
[2] Univ Fed Lavras, Dept Engn, BR-37200000 Lavras, MG, Brazil
来源：
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES | 2018年 / 43卷 / 03期
关键词：
R-curve; linear elastic fracture mechanics; mode I fracture; notched beam test; flexural toughness; fibre-reinforced concrete; NONLINEAR FRACTURE PROPERTIES; MECHANICAL-PROPERTIES; PROCESS ZONE; RESISTANCE; MICRO; TESTS; MODEL;
D O I：
10.1007/s12046-018-0838-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fracture response of brittle materials like concrete can be characterised using modified linear elastic fracture mechanics models, such as the rising resistance curve (R-curve). In this study, the R-curve, determined by utilising the experimental response in the notched beam test with mode I fracture, is proposed as a measure of the toughness of fibre-reinforced concretes (FRCs). The unambiguity of the R-curve obtained is assessed by comparing the predicted flexural response of specimens of different geometries with experimental data. The variation in the R-curves with the dosage of steel and polymer fibres is also discussed.
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页数：6
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