[Construction Example] External Cleaning Work for Accommodation Facilities [Water Jet Method]
Introduction of a case where cleaning of parking lots and exterior structures was performed in Shimohakone Town, Ashigarakami District, Kanagawa Prefecture.
We would like to introduce a case study of our "Water Jet Method." In Shimo-Hakone Town, Ashigarakami District, Kanagawa Prefecture, we used the water jet method to clean a parking lot and exterior structures. By ejecting high-speed water jets, we performed tasks such as concrete surface peeling, roughening, paint removal, and cleaning. 【Case Overview】 ■ Location: Shimo-Hakone Town, Ashigarakami District, Kanagawa Prefecture ■ Implementation Period: August 2020 ■ Type of Work: Cleaning of parking lot and exterior structures ■ Method: Water Jet Method *For more details, please refer to the PDF document or feel free to contact us.
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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 by actively introducing new technologies and overseas techniques. As a new technology for crack repair, we have adopted the "pressure-controlled injection method." By applying appropriate pressure with a pump while permeating the repair material, it ensures that the material reaches deep into the cracks. It can accommodate widths of up to 0.02 mm. Additionally, we own a German-made ultra-high-pressure water jet machine, which achieves high-quality surface treatment, chipping, coating removal, and cleaning compared to existing methods.