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后张法预应力钢筋结构物中的预应力钢筋多采用灌浆被覆其作用主要是蚀锈和附着。有关防腐问题,以往曾发生过预应力钢筋(以下称PC钢筋)锈蚀引起过桥梁坍塌事故,为此有关国家都曾全力进行过深入研究。有关附着问题,本文将着重以土木结构物作为对象就海外近年来有关粘结式PC钢筋与周围相关材料的附着性所作的研究事例作一介绍。1有关PC结构物的附着标准1.1有关先张法的附着标准作用于PC钢筋与混凝土间的附着力,作为先
Post-tensioned prestressed steel structure in the prestressed tendons and more use of grouting coating its role is mainly corrosion and adhesion. Concerning the anti-corrosion issue, in the past, the occurrence of premature collapse of prestressed steel bars (hereinafter referred to as PC steel bars) caused the collapse of bridges. Therefore, the countries concerned have all along carried out intensive studies. For the attachment problem, this article will focus on the civil structure as an object to introduce overseas research on the adhesion of bonded PC steel bars to the surrounding materials in recent years. 1 on the PC structure of the attachment standards 1.1 on the pre-tension method of adhesion standards for PC reinforcement and concrete adhesion between the first