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Bond of Epoxy-Coated Reinforcing Steel to Concrete

环氧树脂涂层钢筋与混凝土的粘结

基本信息

批准号：
8616228
负责人：
David Darwin
金额：
$ 22.34万
依托单位：
University of Kansas Center for Research Inc
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1987
资助国家：
美国
起止时间：
1987-02-01 至 1990-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8616228&HistoricalAwards=false
关键词：
Bond Epoxy Coated Reinforcing Steel

项目摘要

ln old reinforced concrete buildings and bridges corrosion of the steel reinforcing bars has become a serious problem and in some cases has caused a complete collapse of parking structures. In order to eliminate or at least minimize the corrosion of steel reinforcement in concrete structures, current practice uses epoxy- coatings on the bars. However, the bond adherence of the coated bar with the concrete has not been evaluated with respect to the various strength levels of the concrete and the various sizes of steel bars. This project will examine the bond characteristics of epoxy-coated reinforcing bars in order to establish design values which will ensure the safety of the reinforced concrete structures. The two major parameters to be investigated are the different sizes of the reinforcement which may be embedded in concrete of various strength levels. The experimental data will be used to establish code regulations and will serve as a basis for a mathematical model. The results of this research will be beneficial to local, state and Federal bodies involved with construction of reinforced concrete structures of all types. The project is highly recommended by practitioners and academicians as a needed activity to ensure the safety of reinforced concrete structures. The researcher is highly qualified from past experience in research activities of concrete, and the experimental facilities are available at the university. This is the first year award of a two year project. The amount for the first year is $109,657 and $113,787 for the second year.

在老旧的钢筋混凝土建筑和桥梁中，钢筋锈蚀已经成为一个严重的问题，在某些情况下已经导致停车结构的完全倒塌。为了消除或至少减少混凝土结构中钢筋的腐蚀，目前的做法是在钢筋上涂上环氧涂层。然而，涂层钢筋与混凝土的粘结力尚未根据混凝土的不同强度水平和不同尺寸的钢筋进行评估。本项目将研究环氧涂层钢筋的粘结特性，以确定确保钢筋混凝土结构安全的设计值。要研究的两个主要参数是钢筋的不同尺寸，这些钢筋可能嵌入不同强度级别的混凝土中。实验数据将被用来建立代码规则，并将作为数学模型的基础。这项研究的结果将有益于地方、州和联邦机构参与各种类型的钢筋混凝土结构的建设。该项目受到从业者和院士的强烈推荐，认为这是确保钢筋混凝土结构安全的必要活动。研究人员具有很高的混凝土研究活动经验，实验设备在该大学可用。这是为期两年的项目的第一个年奖。第一年为109,657美元，第二年为113,787美元。