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Study on Water Proofing to Increase Durability for Fatigue of Reinforced Concrete Slabs of Highway Bridges

公路桥梁钢筋混凝土板疲劳防水提高耐久性研究

基本信息

批准号：
63850103
负责人：
MATSUI Shigeyuki
金额：
$ 4.29万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63850103/
关键词：
Increasing of Durability of Slabs Water Proofing Fatigue Test by Wheel Trucking Machine Epoxi Resin Asphart Sheet Water Proofing Akuril Resin Akuril-Gum Resin Akuril Concrete RC床版の耐久性向上疲労に対する水の影響 RC床版の劣化損傷水の影響走行試験アスファルトシート系 /

项目摘要

In Japan, deterioration of reinforced concrete slabs have been serious problem since about 1970. The deterioration can be explained as a fatigue failure due to heavy vehicle loads. Furthermore, penetration of rain water into cracks occurring in the slabs is increasing the rate of damages. To increase the durability of slabs, it seems to by very effective to put water proofing between pavement of asphalt and concrete slab. However, the existing water Proofing materials were developed for roof of buildings and it is difficult to apply them to the bridge slabs without check of fatigue durability. The researchers have carried out a series of fatigue tests under a running wheel load to find out suitable water proofings. The fatigue testing method is an original method to investigate slabs of highway bridges because the slabs occur deterioration due to running wheel loads. Five materials such as Epoxy resins, Fabricated asphalt sheet, Acrylic resins, Acrylic-gum resins, and Acrylic resin concrete were examined. They seem to be applicable from the material environmental tests. From the fatigue tests, the researcher can recommend the Fabricated asphalt sheet and Akuril resin troups for the water proofing on slabs.

在日本，钢筋混凝土板的劣化自1970年以来一直是严重的问题。这种劣化可以解释为由于重型车辆载荷引起的疲劳失效。此外，雨水渗透到楼板裂缝中，增加了损坏率。为了提高板的耐久性，在沥青路面和混凝土板之间设置防水层似乎是非常有效的。然而，现有的防水材料是为建筑物的屋顶而开发的，如果不进行疲劳耐久性检查，很难将其应用于桥梁板。研究人员在车轮荷载下进行了一系列疲劳测试，以找出合适的防水措施。疲劳试验方法是研究公路桥梁板的一种新颖方法，因为板会由于车轮荷载的作用而发生劣化。本研究以环氧树脂、人造沥青板、丙烯酸树脂、丙烯酸树脂胶、丙烯酸树脂混凝土等五种材料为研究对象。从材料环境试验来看，它们似乎适用。通过疲劳试验，研究者可以推荐装配式沥青板和Akuril树脂组用于板的防水。