大場建設 List of Products and Services

The "TSS" is an energy-saving system with low maintenance costs and effort. The pre-treatment device (RC or FRP structure) consists of a first digestion chamber, a second digestion chamber, and a filtration chamber. Wastewater is separated into floating substances (scum), settled sludge, and supernatant in the digestion chambers. Additionally, water is rarely drawn from the storage tank, and the BOD removal rate is over 95%, resulting in colorless and transparent water with a clarity of over 1 meter. For construction inquiries, please feel free to contact <Oba Construction Co., Ltd. Environmental Civil Engineering Division>. 【Features】 ■ Wastewater treatment system utilizing natural purification power ■ Capable of handling large load fluctuations ■ Can be installed in locations without electricity ■ Energy-saving system with low maintenance costs and effort ■ Made of robust materials, allowing for semi-permanent use *For more details, please refer to the PDF materials or feel free to contact us.

• Water treatment technology and systems

The "Water Jet Method" involves ejecting water, pressurized by a super high-pressure pump, as a high-speed water jet from a small-diameter nozzle to perform tasks such as concrete surface peeling, roughening, coating removal, and cleaning. The high-pressure water flow from this method is suitable for removing deteriorated concrete sections. Additionally, by adjusting the pressure of the water jet, it is possible to remove coatings applied to surfaces such as buildings, making it also suitable for asbestos removal work. 【Features】 ■ Concrete removal ■ Coating removal ■ Asbestos removal *For more details, please refer to the PDF materials or feel free to contact us.

• Reinforced concrete construction

The "Pressure Adjustment Injection Method" is a concrete repair technology that allows for the injection of materials while freely adjusting the injection pressure to low, medium, or high levels according to the width and depth of the cracks. It can inject even cracks as narrow as 0.02mm and can accommodate depths of up to 200cm. Work can be performed in various locations, such as the exterior walls of buildings and the undersides of bridges, and it generates less waste compared to conventional methods, contributing to reduced environmental impact. 【Features】 ■ A new technology for repairing cracks in concrete repair work ■ Construction is carried out while confirming that the material reaches deep areas ■ Ensures reliable repair work ■ Capable of addressing fine cracks with a width of 0.02mm 【Exhibition Information】 ■ Exhibition Name: Construction Technology Fair 2024 ■ Venue: Port Messe Nagoya (Nagoya International Exhibition Center) ■ Dates: November 28 (Thursday) and 29 (Friday), 2024 ■ Booth Number: Sh08 *For more details, please refer to the PDF materials or feel free to contact us.

• Reinforced concrete construction

We would like to introduce a case study of our "Pressure Adjustment Injection Method." In Sagamihara City, Kanagawa Prefecture, we conducted an investigation and repair of bridge concrete using the pressure adjustment injection method. Compared to conventional methods, this approach generates less waste during the work, contributing to a reduction in environmental impact. [Case Overview] ■ Location: Sagamihara City, Kanagawa Prefecture ■ Implementation Period: November 2018 ■ Type of Work: Investigation and repair of bridge concrete ■ Method: Pressure Adjustment Injection Method *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

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.

• Special Construction Method

We would like to introduce a case study of our "Water Jet Method." At Maruyama Zoo in Sapporo City, Hokkaido, we used the water jet method to remove asbestos from the animal enclosure. This method is suitable for asbestos removal work as it does not generate dust. 【Case Overview】 ■ Location: Sapporo City, Hokkaido ■ Implementation Period: September 2019 ■ Type of Work: Asbestos removal in the animal enclosure ■ Method: Water Jet Method *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

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 the parking lot and exterior structures. By ejecting high-speed water jets, we performed surface peeling of concrete, 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.

• Special Construction Method

We would like to introduce a case study of our "Water Jet Method." In Fuji City, Shizuoka Prefecture, we performed the removal of paint coatings from the bottom and walls of a pool using the water jet method. By adjusting the pressure of the water jet, it is possible to remove paint coatings applied to surfaces such as buildings. 【Case Overview】 ■ Location: Fuji City, Shizuoka Prefecture ■ Implementation Period: January 2022 ■ Type of Work: Removal of paint coatings from the bottom and walls of a pool ■ Method: Water Jet Method *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

We would like to introduce the equipment used in our water jet method. We have the "trail jet 100" for chipping, roughening, paint film removal, and cleaning, and the "wheel jet 11p" for paint film removal and cleaning in our lineup. Additionally, we also offer the "H99/500 hot water" for hot water applications. 【Equipment Lineup】 ■trail jet 100 (Ultra-high pressure water generation device) ■wheel jet 11p (Ultra-high pressure water generation device) ■H99/500 hot water (High-temperature water generation device) *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

Our company offers the "Water Jet Method," which allows for surface cleaning of concrete, roughening, chipping, and the removal of various types of paint using ultra-high-pressure water jets. This method does not use chemicals or abrasives, making it environmentally friendly. It can also be adjusted to the appropriate pressure according to the type and condition of the substrate. Please feel free to contact us if you have any requests. 【Features】 ■ Can be performed without damaging the main body more than necessary ■ Can selectively remove only the deteriorated paint and concrete ■ Allows for the removal of paint and lining materials without damaging the substrate ■ Generates minimal dust, considering the working environment ■ Compact design accommodates a wide range of construction conditions *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

Our company offers the pressure-controlled injection method "SAPIS," which demonstrates excellent injection technology, adaptability, and economic efficiency. You can choose from two types of injection machines: the "Vacuum Suction Type Pressure-Controlled Injection Method (TH-110002-A)" and the "Nozzle Type Pressure-Controlled Injection Method (TH-110003-A)." Please feel free to contact us if you have any inquiries. 【Features】 ■ High-quality repair technology ■ Wide range of adaptability ■ Environmentally conscious *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods