Development of Bond Test Method for Continuous Fiber Sheet

连续纤维片材粘合力测试方法的开发

基本信息

批准号：
10650448
负责人：
MARUYAMA Kyuichi
金额：
$ 2.24万
依托单位：
NAGAOKA UNIVERSITY OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650448/
关键词：
Continuous Fiber Sheet Test Method for Bond Concrete Bond Stress Relative Displacement Constitutive Equation Carbon Fiber Aramid Fiber

项目摘要

In order to develop a test method for bond between continuous fiber sheet (CF Sheet) and concrete, it has been examined whether the bond properties of the sheet and concrete can be appropriately measured with use of a hexahedron block of concrete. Through the experimental work, it is found out that measurement of the strain distribution in a sheet by attached strain gages can show the bond stress distribution and peeling off with adequate accuracy during loading. In addition, the influences of the property of sheet (modulus of elasticity), properties of adhesion materials and concrete strength were evaluated quantitatively.Since the peeling off phenomenon can be defined as bond failure, concrete strength must affect the phenomenon. The test results, however, showed that the relationships between bond stress and relative displacement were almost identical while concrete strength was varied from 24 to 60 kN/mmィイD12ィエD1. It was considered that the surface properties of concrete were hardly changed in the range of above concrete strength. This was true for either case of carbon fiber and aramid fiber. However, the modulus of elasticity of adhesion resin affected greatly on the bond behavior. When the low modulus of elasticity of resin is used, the stress transfer length becomes longer and may result in fiber fracture instead of peeling off.Based on the bond stress - relative displacement relationships, it was developed how to determined the proper amount of continuous fiber sheet for strengthening the shear capacity of ordinary RC beams. The effectiveness of the proposed method was examined by comparison with test results.Through the research work it is concluded that the proposed test method for the bond of continuous fiber sheet and concrete can show sufficient as a standard test method.

为了开发用于粘合纤维板（CF板）和混凝土的测试方法，可以通过使用实验性工作来适当地测量ND混凝土的测试。应力应力应力应力应力应力应力在加载过程中的精度。此外，板的特性（弹性模量）的影响，粘附材料和混凝土的特性都可以定义为脱皮现象。失败的现象，测试结果表明，键合中的键合，而混凝土强度从24到60 kN/mm II D1变化。在碳纤维和芳族纤维的情况下，这是正确的。键应力 - 相对位移关系，开发了如何确定适当的连续纤维板，以增强剪切能力F普通RC梁。作为标准测试方法表现出足够的表现。