Introduction of a case where the deterioration of bridge concrete was chiseled and treated in Kyotango City, Kyoto Prefecture.
We would like to introduce a case study of our "Water Jet Method." In Kyotango City, Kyoto Prefecture, we performed the chipping and treatment of deteriorated areas of bridge concrete using the water jet method. By ejecting water as a high-speed water jet from a small-diameter nozzle, we carried out tasks such as surface chipping, roughening, coating removal, and cleaning of the concrete surface. 【Features】 ■ Construction Location: Kyotango City, Kyoto Prefecture ■ Implementation Period: January 2019 ■ Type of Work: Chipping and treatment of deteriorated areas of bridge concrete ■ Method: Water Jet Method *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
catalog（3）
Download All Catalogs
Company information
In our country, during the period of rapid economic growth, approximately 10 billion cubic meters of concrete structures were built, many of which have experienced deterioration over time, leading to repair work being carried out in various locations. However, Japan has a strong concept of "scrap and build," and the technology related to repair and reinforcement is somewhat lagging compared to overseas. Therefore, Oba Construction Co., Ltd.'s Environmental Civil Engineering Division has started as a specialized department for the repair of concrete structures, aiming for high-quality repairs of domestic concrete structures by actively introducing new technologies and overseas techniques. As a new technology for crack repair, we have adopted the "pressure-adjusted injection method." By applying appropriate pressure with a pump while permeating the repair material, the material reliably reaches the depths of the cracks, and it can accommodate widths of up to 0.02 mm. Additionally, we own a German-made ultra-high-pressure water jet machine, which enables high-quality surface treatment, chipping, coating removal, and cleaning compared to existing methods.