• LINES OF BUSINESS
Corrosion Protection Work
We perform concrete corrosion protection work for water supply and sewerage facilities. Our techniques offer superior waterproofness, durability, and workability.
As a contractor certified under the "Construction Techniques conforming to the Japan Sewage Works Agency Corrosion Protection Guidelines" and "Construction Techniques Conforming to the Japan Water Works Association Standard (JWWA)", we carry out concrete corrosion protection work for water supply and sewerage facilities, utilizing construction techniques superior in waterproofness, durability, and constructability. For more information, please feel free to contact us.
  • Public Water Supply Treatment Facility Construction Techniques
    Sprayed Polyurea Lining for Waterworks Facilities
    Quickly-Installed, Seamless Coating
    Our corrosion protection lining coating technique for waterworks facilities utilizes an epoxy resin putty, which is highly bondable to the concrete base and offers excellent substrate treatment functionality. This is combined with a stretchable, durable polyurea resin spray coating which is quick to install.
    Characteristics
    All products are solventless and do not affect water quality, offering excellent safety.
    This process creates a seamless coating with excellent resistance to acid, alkali, chlorine, and hot water, with elongation percentage of 200% or greater.
    The material becomes dry to the touch in 20-30 seconds, quickly forming a uniform coating on surfaces such a ceilings and walls.
    This method excels in base adhesion durability, ensuring maintenance of long-term adhesive strength with the concrete substrate.
    Polyurea Resin Spray System Overview
    The polyisocyanate component (Agent "A") and the special polyamine component (Agent "B") are heated and temperature controlled while being fed under high pressure to undergo a collisional mixing by special-purpose guns. The mixed materials are then sprayed to instantaneously form a polyurea resin coating layer which offers both corrosion protection and waterproofing functionality.
    “Jick Aqua 149” FRP Lining Method for Waterworks Facilities
    “Jick Aqua 149” is an FRP lining method for waterworks facility concrete water tanks, which employs a compound of soft polyester resin and anticorrosive polyester resin. This technique complies with Japan Water Works Association standard JWWA K149.
    Characteristics
    This FRP lining method utilizes soft polyester resin reinforced with fiberglass, combining flexibility and high strength while providing excellent waterproofness and anticorrosive capabilities.
    The combination of high strength and flexibility improves crack tracking.
    This treatment improves alkaline resistance of the substrate concrete.
    Excellent adhesive stability maintains long-lasting adhesive functionality.
    The highly thixotropic material offers excellent workability, easily impregnates the fiberglass, and is easily defoamed.
    The cured coating complies with the coating quality standards of Japan Water Works Association standard JWWA K149.
    Applicable Facilities
    Interior Coating for Waterworks Facility Concrete Water Tanks: Water distribution reservoirs, water receiving tanks, and clean water facilities such as clean water reservoirs.
    Interior Coating for Other Concrete Water Tanks: Farm ponds, fire prevention water tanks, etc.
    Epoxy Resin Coating Technique for Waterworks Facilities
    Achieving Highly Durable, Efficient Installation
    This concrete clean water tank coating technique utilizes an epoxy emulsion polymer cement surface treatment, with application of a highly-durable epoxy resin concrete protection coating material.
    Characteristics
    Applying a mixture of high-strength epoxy resin and powder as the substrate preparation material prevents bonding failure of the coating which may otherwise be caused by a variety of stresses developed along the adhesion interface between the concrete and the coating. This process creates excellent bonding stability.
    Regardless of the amount of moisture in the concrete substrate surface, excellent bonding strength is obtained. By avoiding the need for drying and moisture measurement, economical, efficient installation becomes possible.
    The smooth, treated substrate is ideal for forming a defect-free coating of uniform thickness.
    This facilitates formation of an impermeable, hard coating with excellent chemical resistance.
  • Technique for Sewerage System Treatment Facilities
    Polyurea Resin Spray Lining for Sewerage System Treatment Facilities
    Highly Waterproof Results and Shorter Work Times
    Our corrosion protective lining technique for sewerage facilities utilizes a combination of epoxy resin material, which has primer functionality on the concrete substrate as well as base surface treatment functionality, together with a polyurea resin spray material which facilitates quick installation.
    Characteristics
    The coating layer offers excellent waterproofness, crack traceability, shock resistance, wear and abrasion resistance, adhesive properties, and chemical resistance.
    Spray installation and instant curing provide excellent workability. This can substantially reduce temporary facility costs and shorten work times.
    The special-purpose spraying equipment quantitatively pressure-feeds the material onto the installation surface, then, spray guns are used to instantly form a uniform lining membrane.
    This method prevents generation of pin-sized holes, and improves adhesion with a smooth coating finish.
    Polyurea Resin Spray System Overview
    The polyisocyanate component (Agent "A") and the special polyamine component (Agent "B") are fed under high pressure while being heated and temperature controlled to undergo a collisional mixing by special guns. The mixed materials are then sprayed to instantaneously form a polyurea resin coating layer with corrosion protection and waterproofing functions.
    Epoxy Resin Lining for Sewerare System Treatment Facilities - Non-cloth (Laminated, Nonreinforced)
    Reduce Total Costs while Offering High Acid Resistance
    This non-cloth technique conforms to C-D1 Type Technique Standards. By controlling the curing shrinkage of the epoxy resin, the installed lining is solely composed of resin, without reinforcement materials such as glass fiber.
    Characteristics
    Although this is an epoxy resin, it offers acid resistance comparable to that of vinylester resin. Its acid resistance, including resistance to organic acid, by far exceeds that of a conventional epoxy coating material.
    Installation does not require large-scale special-purpose coating or other equipment. This lining may be applied to large and small facilities alike.
    Shorter work times contribute to total cost reduction.
    Highly Sulfuric Acid-Resistant Mortar Corrosion Protection Technique for Sewerage System Treatment Facilities
    Applicable to High-Humidity Environments and High Moisture Content Concrete
    This highly sulfuric acid-resistant corrosion protection technique utilizes an emulsion system primer coated with highly sulfuric acid-resistant mortar. The thickness of the coating installation is determined according to the corrosive environment and the degradation status.
    Characteristics
    Our design concept includes allowance for reduction-of-area, and we estimate the amount of reduction-of-area and the carbonation depth due to degradation. Structurally insignificant reduction-of-area or carbon depth values can be pre-set, or the cross-section thickness can be increased in advance. Facility functionality can be maintained by periodic inspections and repairs.
    Installation is possible even in high-moisture environments, or for high moisture content concrete, where conventional topical application lining techniques cannot be used.
    Because there is no need for a recoating process in this topical application lining method, and because of the shorter installation and curing times, work times can be shortened.
PHONE +81-11-856-4622
HEAD OFFICE
2 jo 1 chome-1-46 Nishioka,Toyohira,Sapporo,Hokkaido,062-0032,Japan
PHONE +81-11-856-4622 / FACSIMILE +81-11-856-0130
ASAHIKAWA BRANCH
2 jo 1 chome-7-10 Toyooka,Asahikawa,Hokkaido,078-8232,Japan
PHONE +81-166-35-0080 / FACSIMILE +81-166-35-0090
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