Model of hooked steel fibers reinforced concrete under tension

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

ชูชัย สุจิวรกุล

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Sujivorakul C.

ปีที่เผยแพร่ (ค.ศ.): 2012

Volume number: 2

หน้าแรก: 19

หน้าสุดท้าย: 26

จำนวนหน้า: 8

ISBN: 9789400724358

นอก: 2211-0844

eISSN: 2211-0844

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874378087&doi=10.1007%2f978-94-007-2436-5_3&partnerID=40&md5=f959c29947958baa1bba355a7b3af3a4

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

The main objective of this research was to develop a model for predicting stress-strain relationship of hooked steel fibers reinforced concrete (HF- FRC) under tension. The research was divided into 2 parts. The first part was extensive tensile tests of HS-FRC. The hooked steel fibers having two plastic hinges at both ends were used. The size of tensile specimens was 5 x 5 cm in cross section and 50 cm in length. Parameters used in the study were: (a) Lf/D and Lf of the fibers (65/60, 65/35 and 80/60); (b) volume fractions of the fibers (0, 0.25, 0.5, 1.0 and 1.5%); and (c) compressive strength of concrete (30, 40 and 50 MPa). The main results obtained in test were stress-strain relationship of HS-FRC, first-peak strength, and post-cracking strength. The second part focused on statistical prediction. The basic model of stress-strain relationship was proposed in this research, i.e. linear relationship up to first-peak strength and assumed constant post-cracking strength. In statistical prediction, the dependent variables were first- peak strength and post-cracking strength of HF-FRC, while the independent variable were Lf/D, Lf, volume fraction of fibers, and compressive strength of concrete. A good prediction was obtained from the model, and the equations for using in the design were recommended. It was seen in the model that an increase in Lf/D ratio, Lf, volume fraction of the fibers, and compressive strength of concrete significantly enhanced the tensile performance of hooked steel fiber reinforced concrete, and could lead to high performance fiber reinforced concrete. ฉ RILEM 2012.

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