Fiber orientation and distribution in ultra-high strength fiber reinforced concrete and tension softening property

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560565
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Gifu University
• Principal Investigator: UCHIDA Yuichi 岐阜大学, 総合情報メディアセンター, 教授 (20213449)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 超高強度繊維補強コンクリート / 繊維の配向 / 可視化コンクリート / 曲げ強度

Outline of Final Research Achievements

With the aim of investigating fiber orientation in ultra-high strength fiber reinforced concrete (hereinafter referred as to UFC), a transparent model concrete containing fibers was placed in various molds to visualize fiber orientation.　The fiber orientation observed by model concrete agreed with the fiber orientation estimated by image analysis of cut surface of actual UFC specimen. 　The relation between the fiber orientation and the flexural strength of UFC was also investigated using the specimens with unidirectional fiber.　The rate of change of flexural strength with variation of fiber orientation almost agreed with that of the effective number of fibers in the cross section of specimen.

Free Research Field

コンクリート工学