Integrating new and old concrete structures

摘要

The present invention relates to an integrated method of new and old concrete structures. More specifically, new concrete is applied to existing concrete surfaces that have already been constructed or to concrete surfaces that have already been aged for many years. When the construction is integrated, the joint surface is specially processed so that the old and new concrete surfaces maintain good binding strength so that the durability, waterproofness, and safety of the facility can be ensured. In the joining, the existing concrete surface is blown by air hammer type hammer machine consisting of multiple hammer bits, and the concrete surface is cut to a predetermined thickness such as 10 ~ 300mm, and the air gun is spaced at regular intervals on the cut surface. ) It is important to cover the new concrete angsengyeon after inserting the connector pin with