土屋建設 List of Products and Services

Tsuchiya Construction offers comprehensive construction services, including civil engineering and building construction. We would like to introduce a case study of "Concrete Structure Repair" that we have undertaken! 【Tsuchiya Construction Concrete Repair Case Study】 ■ Project: Mie Prefecture - Kamishima Observation Post An old Imperial Army facility on Kamishima Island in Toba City, Mie Prefecture, featured in Yukio Mishima's novel "The Sound of Waves." It is used for film shooting locations. ■ Purpose of Construction To restore a building that has been prohibited from use due to aging and to prepare it for use as a tourist facility. ■ Construction Proposal We proposed the "IPH Method," a suitable technique for repairing and reinforcing concrete structures, ensuring that the appearance and atmosphere of the deteriorated reinforced concrete building are not compromised. By injecting low-viscosity epoxy resin into the fine cracks and voids in the concrete, we aimed to improve durability and restore structural strength. ～ What is the Concrete Repair Method "IPH Method"? ～ Unlike conventional low-pressure resin injection methods, this technique involves injecting resin while removing air from the crack locations on the concrete surface, integrating the cracked concrete and ensuring durability. It enhances the adhesion strength between the rebar and concrete, and also provides anti-corrosion effects. *For more details, please feel free to contact us.

• Renovation and repair methods

The "iTECS technology" is a technique aimed at understanding the internal conditions of structures through the response analysis of structures to elastic waves. This technology analyzes frequencies caused by multiple reflections to assess the thickness of structures, the presence of internal defects, and other indicators of structural integrity. Additionally, by utilizing the properties of elastic waves, it measures the depth of cracks that have opened on the surface of structures and the velocity of elastic waves. 【Features】 ■ Understand the internal conditions of structures through response analysis to elastic waves ■ Analyze frequencies caused by multiple reflections ■ Assess the thickness of structures, the presence of internal defects, and other indicators of integrity ■ Measure the depth of surface cracks and the velocity of elastic waves *For more details, please refer to the PDF materials or feel free to contact us.

• Non-destructive testing

The "Terios Coat Beautification and Anti-Soiling Method" is a beautification and anti-soiling technique using the high-durability anti-soiling material "Terios Coat NP360 Series," which is an inorganic paint that does not impose a burden on the environment for use in construction and civil engineering structures. It is effective across a wide range, from concrete structures such as tunnels and underpasses that require anti-soiling measures to steel structures and tile or stone-finished structures that need surface protection. 【Features】 <Anti-Graffiti Coating> ■ Quick-drying ■ Solvent-resistant ■ Weather-resistant ■ Multi-purpose *For more details, please refer to the PDF materials or feel free to contact us.

• Plastering and painting work
• Special Construction Method

Our company employs the "Crystal NCP Method." This is a repair and corrosion prevention method for concrete structures that uses a hybrid surface impregnation material with excellent performance in preventing the infiltration of deterioration factors, along with PCM that has a dense structural composition, superior physical properties, and long-term stability. The PCM used complies with the NEXCO cross-section repair material standards. It provides stable quality with simple construction by just mixing with USCP liquid (powder: mixing liquid = 25:3.8). 【Features】 ■ Concrete body modification effect ■ Workability and stable quality ■ Dense structure and crack resistance ■ Abrasion resistance and prevention of deterioration factor infiltration *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

"Silicali" is a silicate-based surface impregnation material that improves the performance of structures without changing their appearance, while also excelling in workability and cost-effectiveness. For new structures, it is applied during the design phase to ensure durability. For existing structures, it can be effectively utilized for deterioration suppression and preventive maintenance of structures that are at risk of deterioration. It is primarily composed of potassium silicate, which not only inhibits the intrusion of deterioration factors but also prevents water ingress. 【Features】 ■ Improved permeability ■ Maintains the aesthetic of concrete surfaces ■ Shortens construction time and reduces costs ■ Minimizes environmental impact *For more details, please refer to the PDF materials or feel free to contact us.

• Reinforcement and repair materials

Tsuchiya Construction, which operates in the general construction industry, handles the internal pressure filling joint reinforcement method known as the 'IPH method.' This method achieves "strength recovery" and "extended lifespan" for concrete structures that have deteriorated due to aging or earthquakes. It is a special technique that injects resin while extracting air from within the concrete, allowing the resin to diffuse radially from the drilled holes and fill even the finest cracks at the ends. This not only enhances the adhesion strength between rebar and concrete but also provides anti-corrosion effects, contributing to improved durability. 【Features】 ■ Strength recovery and increased load capacity of concrete structures ■ High-density filling to the finest cracks at the ends ■ Improved durability due to anti-corrosion effects ■ Technological evaluation from the Japan Society of Civil Engineers and patent acquisition for the method 【Construction Example: Kamishima Monitoring Post in Mie Prefecture (Photo)】 We restored a building that had been prohibited from use due to aging and prepared it for use as a tourist facility. 【Strengths of Tsuchiya Construction】 We handle a variety of methods and excel at providing proposals tailored to site conditions. We can provide consistent support from preliminary diagnosis to post-repair inspection. Please feel free to contact us! *Method information can be viewed in the catalog available for [PDF download].

• Renovation and repair methods

The "Shikkarito Series" is a product that enables waterproofing of concrete using a silane-silicate surface infiltration method. The "Shikkarito Modifier" is designed to penetrate deeper into the concrete than water due to its smaller size than water molecules and the effect of penetration aids that reduce surface tension. It contains lithium nitrite, which is expected to enhance the durability and waterproofing function of concrete while also providing anti-corrosion effects for rebar. Additionally, there are "Shikkarito Water Absorption Prevention" and "Shikkarito Combined Method" products available. 【Effects】 ■ Shikkarito Modifier (silicate-based) - Densification, prevention of neutralization, prevention of initial drying cracks, waterproofing, water stopping, prevention of efflorescence ■ Shikkarito Water Absorption Prevention (silane-based) - Water absorption prevention, prevention of salt damage, anti-mold, anti-algae ■ Shikkarito Combined Method - Densification, water absorption prevention, prevention of salt damage, suppression of neutralization, anti-mold, anti-algae, prevention of efflorescence *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material

The "Crystal Floor Slab Waterproofing Method" is an inorganic hybrid waterproofing method for concrete floor slabs, consisting of a primer made primarily of modified silicate and a topcoat made primarily of colloidal silica. The impregnation-type primer penetrates approximately 5mm into the upper surface layer of the concrete floor slab, achieving densification. Next, by applying a coating-type inorganic polymer topcoat, excellent waterproof performance is exhibited. Since the construction involves only the application work using rollers or sprayers, it allows for a reduction in construction time. 【Features】 ■ Waterproofing ■ Freeze-thaw resistance ■ Surface modification ■ Non-combustibility ■ Safety *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material

The "Nano Coat" series is a water-based, single-component inorganic polymer coating material that prevents swelling and peeling caused by moisture inside concrete. Due to its molecular structure formed at the nanometer scale (one-millionth of a millimeter), it does not allow water to pass through but permits air to flow, making it a "breathable coating material," which maintains good adhesion. It is suitable for application on substrates both inside and outside buildings (such as concrete surfaces, mortar surfaces, PC surfaces, slate surfaces, etc.). 【Features】 ■ Durability ■ Moisture permeability ■ Safety ■ Workability ■ Non-combustibility *For more details, please refer to the PDF document or feel free to contact us.

• Exterior coating materials

"T&C Anti-Corrosion (for Salt Damage and Frost Damage)" is a concrete deterioration prevention material that significantly enhances resistance to salt damage. By applying two types of impregnants to the surface of the concrete, it effectively suppresses the intrusion of deterioration factors. It also improves workability in marine environments. If conditions allow for application after concrete placement, it can be used on various concrete components. 【Features】 ■ For Salt Damage: Enhanced permeability, improved surface hardness, increased salt resistance, safety performance, and workability in marine environments. ■ For Frost Damage: Scaling resistance, waterproofing, impact on appearance, and safety. *For more details, please refer to the PDF document or feel free to contact us.

• Concrete curing material

The "Crystal Stone" series is a permeable inorganic reactive agent that achieves long-term durability for concrete. By performing surface treatment regardless of whether it is for maintenance or new construction, it protects concrete from moisture, carbon dioxide, and salt, which are factors of deterioration. The effects of this product include suppression of carbonation, improved anti-fouling performance, prevention of freeze-thaw damage, increased surface hardness, enhanced chemical resistance, and maintenance of aesthetic appearance. 【Features】 ■ Maintenance and repair of concrete ■ Protects concrete from moisture, carbon dioxide, and salt to achieve long-term durability *For more details, please refer to the PDF document or feel free to contact us.

• Concrete curing material

Japan has sent various buildings and structures into the world for half a century after experiencing rapid economic growth. As their lifespan approaches its end, the regeneration of these structures has become an urgent task. At Tsuchiya Construction, we are making daily efforts using various new technologies to ensure that local communities can live safely. 【Introduction of Technologies】 ■ Crystal Stone ■ Terios Coat ■ T&C Corrosion Protection ■ Seal Coat 007R ■ Nano Coat ■ USCP (Ultra Surface Concrete Polymer) ■ Crystal CP Method ■ Crystal Slab Waterproofing Method ■ NK Rust Stabilization Anti-Corrosion Method ■ IPH System Method ■ Shikkarito Series ■ Liquid Glass Technology *For more details, please contact us or download the catalog.

• Renovation and repair methods
• Other construction services
• Non-destructive testing