置賜建設 List of Products and Services

At Tachi Construction Co., Ltd., we implement the "Dry Spray Seismic Reinforcement Method," which achieves high-speed and high-quality construction, and the "Polymer Cement Dry Spray Method," which is optimal for the repair of concrete structures. In the "Seismic Reinforcement and Cross-Section Repair Case Studies in the Tohoku Region," we introduce examples of our methods applied in the Tohoku area. [Case Studies] ■ Ohtani Bridge Old Bridge (Miyagi Prefecture Civil Engineering Heritage) - Completed in October 2013 - Dry spray cross-section repair work (NETIS method) - Total quantity: 2100m2, 432t - Tohoku Regional Development Bureau, Sendai River and National Highway Office, National Route 47 *We can respond quickly to inquiries from the six prefectures in the Tohoku area. (Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima) *For more details, please refer to our catalog or feel free to contact us.

• Bridge Construction
• Earthquake-resistant construction method
• Renovation and repair methods

The "sto Dry Spray Application Method" is a technique that allows for the repair and reinforcement of concrete structures using a unique silo system, enabling construction to be completed in a short period of time. It sprays polymer cement mortar at a high speed of 200 km/h using a spray supply system. This method can be applied to various concrete structure repair projects and the thickening of the underside of RC slabs, which were traditionally addressed using plastering methods, filling methods with formwork, and wet spray methods. - Features Transport distance: Horizontal 300m, Vertical 150m Single layer application thickness: 6mm to 50mm (maximum 100mm) Can be applied under traffic vibrations Finishing with a trowel is possible No mixing work required on-site No issues such as blockage of the pumping hose, allowing for long periods of work interruption Easy to clean No formwork required No primer needed High-quality cross-section formation - Benefits Significant reduction in construction time Cost savings in construction Extension of the lifespan and durability of structures *Quick response is possible for the six prefectures in the Tohoku region. (Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima) For more details, please contact us or download the catalog.

• Reinforcement and repair materials

The "sto Dry Spray Application Method" is a technique that allows for the repair and reinforcement of concrete structures using a unique silo system, enabling construction to be completed in a short period of time. A device called the spray supply system sprays polymer cement mortar at a high speed of 200 km/h. This method can be applied to various concrete structure repair works, such as cross-section repairs and the thickening of the underside of RC slabs, which were traditionally addressed by plastering methods, filling methods using formwork, and wet spray methods. 【Features】 - Shortened construction period - Reduced running costs - Excellent workability - Improved quality - Registered in the Ministry of Land, Infrastructure, Transport and Tourism's NETIS New Technology Information System *Quick response is available for those in the six prefectures of Tohoku. (Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima) For more details, please contact us or download the catalog.

• Reinforcement and repair materials

At Tokiwa Construction Co., Ltd., we implement the "Dry Spray Seismic Reinforcement Method," which achieves high-speed and high-quality construction, and the "Polymer Cement Dry Spray Method," which is optimal for the repair of concrete structures. In the "Seismic Reinforcement and Section Repair Case Studies in the Tohoku Region," we introduce examples of our methods applied in the Tohoku region. 【Case Studies】 ■ Ohtani Bridge Old Bridge (Miyagi Prefecture Civil Engineering Heritage) - Completed in October 2013 - Dry Spray Section Repair Work (NETIS Method) - Total Quantity: 2100m2, 432t - Tohoku Regional Development Bureau, Sendai River National Highway Office, National Route 47 *For more details, please refer to the catalog or feel free to contact us.

• Bridge Construction
• Earthquake-resistant construction method
• Renovation and repair methods

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is blended in predetermined ratios of cement, aggregates, polymers, and fibers, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can supply high-quality materials consistently ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No wash water from equipment or packaging dust is generated, considering environmental aspects For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "water jet method" is a construction technique that uses only the power of water, eliminating the need for chemicals and resulting in low running costs while being highly effective. Okitsuma Construction Co., Ltd. has introduced semi-automatic robots, enabling safer construction. Delicate areas that require fine adjustments can be handled by human skill, and the balance of work with semi-automatic robot construction has achieved a level of safety and efficiency greater than ever before. 【Features】 ○ Used for chipping, roughening, and substrate adjustment at construction sites ○ Does not cause fine cracks (microcracks) in the base material ○ Can be processed while maintaining appropriate adhesive strength For more details, please contact us or download the catalog.

• Reinforced concrete construction
• Special Construction Method
• Renovation and repair methods

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of experience in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the materials are compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 - Can supply high-quality materials consistently - No need for a material stockyard - Construction is possible under traffic vibrations - Rebound material has very little moisture and is easy to handle - No wastewater from equipment cleaning or packaging dust generation, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar that has nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the materials are compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction is possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, allowing for environmental considerations For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "water jet method" performs construction using only the power of water, eliminating the need for chemicals and resulting in low running costs, while also being highly effective. Okitsuma Construction Co., Ltd. has introduced semi-automatic robots, enabling safer construction. Delicate areas that require fine adjustments can be handled by human skill, and the balance of work with semi-automatic robot construction has achieved safer and more efficient construction than ever before. 【Features】 ○ Used for chiseling, roughening, and substrate adjustment at construction sites ○ Does not create fine cracks (microcracks) in the base material ○ Can be processed while maintaining appropriate adhesive strength For more details, please contact us or download the catalog.

• Special Construction Method
• Renovation and repair methods
• Reinforced concrete construction

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar that has nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed out, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, considering environmental aspects For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar that has nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the materials are compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "water jet method" is a construction technique that operates solely using the power of water, eliminating the need for chemicals and resulting in low running costs while providing high effectiveness. Okitsuma Construction Co., Ltd. has introduced semi-automatic robots, enabling safer construction. Delicate areas that require fine adjustments can be handled by human skill, and the balance of work with semi-automatic robot construction has achieved a level of safety and efficiency greater than ever before. 【Features】 ○ Used for chipping, roughening, and substrate adjustment at construction sites ○ Does not create fine cracks (micro-cracks) in the base material ○ Can be processed while ensuring appropriate adhesion strength For more details, please contact us or download the catalog.

• Reinforced concrete construction
• Special Construction Method
• Renovation and repair methods

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction is possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of washing water for equipment or packaging dust, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar that has nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar that has nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is blended in predetermined ratios of cement, aggregates, polymers, and fibers, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for sectional repair materials. 【Features】 - Can consistently supply high-quality materials - No need for a material stockyard - Construction is possible under traffic vibrations - Rebound material has very little moisture and is easy to handle - No generation of wash water from equipment or packaging dust, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can supply high-quality materials consistently ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, considering environmental aspects For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the materials are compacted using the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for sectional repair materials. 【Features】 ○ Can consistently supply high-quality materials ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, considering environmental aspects For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

At Tokiwa Construction Co., Ltd. Environmental Division, we are engaged in projects aimed at extending the lifespan and improving the durability of concrete by acquiring advanced equipment and technology from Germany. We provide services such as "cross-section repair" and "seismic reinforcement" using the latest dry spray application method for the repair and reinforcement of bridge piers and large concrete structures. 【Business Activities】 ○ Cross-section repair dry spray application method for concrete structures (using polymer cement mortar) ○ Dry spray seismic reinforcement method ○ Chipping construction using water jet method For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Foundation construction

The "sto Dry Spray Application Method" is a technique that allows for the restoration and reinforcement of concrete structures using a unique silo system, enabling construction to be completed in a short period. It sprays polymer cement mortar at a high speed of 200 km/h using a spray supply system. This method can be applied to various concrete structure restoration projects and the thickening of the underside of RC slabs, which were traditionally addressed by plastering methods, filling methods using formwork, and wet spray methods. 【Features】 - Shortened construction period - Reduced running costs - Excellent workability - Improved quality - Registered in the Ministry of Land, Infrastructure, Transport and Tourism's NETIS new technology information provision system For more details, please contact us or download the catalog.

• Reinforcement and repair materials

The "water jet method" is a construction technique that operates solely using the power of water, eliminating the need for chemicals and resulting in low running costs while being highly effective. Okitsuma Construction Co., Ltd. has introduced semi-automatic robots, enabling safer construction. Delicate areas that require fine adjustments can be handled by human skills, and the balance of work with semi-automatic robot construction has achieved safer and more efficient construction than ever before. 【Features】 ○ Used for chipping, roughening, and substrate adjustment at construction sites ○ Does not create fine cracks (micro-cracks) in the base material ○ Can be processed while ensuring appropriate adhesion strength For more details, please contact us or download the catalog.

• Turbid water and muddy water treatment machines
• Wood processing

The "Sto Seismic Reinforcement Method" is a seismic reinforcement technique that can be applied to existing concrete structures using rebar and the Sto dry spray application method. Compared to other methods, it allows for construction to be completed in a short period, significantly reducing the construction time and lowering running costs. Additionally, not only does it improve construction speed, but it also addresses major quality enhancement issues through excellent quality performance (no primer application, water-cement ratio of 40%, no additives such as emulsions). 【Features】 ○ Significant increase in construction speed due to the use of a spray supply system ○ Cost reduction through labor-saving equipment and shortened construction time ○ Adoption of the excellent workability of the dry spray application method ○ Superior strength characteristics, demonstrating high durability against carbonation, salt damage, and freeze-thaw cycles ○ Registered in the Ministry of Land, Infrastructure, Transport and Tourism's NETIS New Technology Information System For more details, please contact us or download the catalog.

• Renovation and repair methods
• Earthquake-resistant construction method

The "Sto Dry Spray Application Method" was developed in Germany, a leading country in concrete repair technology, and is a dry spraying method using premixed polymer cement mortar with nearly 40 years of proven performance in Europe. Just before the factory-produced premixed polymer cement mortar, which is composed of cement, aggregates, polymers, and fibers in predetermined ratios, is sprayed, an appropriate amount of water is supplied, and the material is compacted by the impact force of air pressure. This allows for the formation of a cement mortar that meets the required performance for cross-section repair materials. 【Features】 ○ Can supply high-quality materials consistently ○ No need for a material stockyard ○ Construction possible under traffic vibrations ○ Rebound material has very little moisture and is easy to handle ○ No generation of wash water from equipment or packaging dust, allowing for environmental consideration For more details, please contact us or download the catalog.

• Reinforcement and repair materials
• Renovation and repair methods
• Wood processing

The "Dry Spray Seismic Reinforcement Method" is a seismic reinforcement technique for existing concrete structures using rebar and the sto dry spray method. The adoption of a dry spray supply system enables work at long distances and high altitudes, allowing for easy construction over a wide area of up to 200 meters horizontally and 150 meters vertically. This method allows for construction in a short period, leading to reduced construction time. Additionally, it can solve significant issues such as cost reduction and quality improvement. 【Features】 ○ NETIS registered, Registration Number: KT-090036 ○ Construction time can be shortened → Significant increase in construction speed due to the use of the spray supply system ○ Costs can be reduced → Reduction in expenses through labor-saving equipment and shortened construction time ○ Excellent workability → Adoption of the superior workability of the dry spray method ○ Commitment to quality improvement → Excellent strength characteristics and high durability against carbonation, salt damage, and freeze damage For more details, please contact us or download the catalog.

• Other civil engineering works