Cavity and void filling method to maintenance and repair of various structures.
General Description
・Cavity, void filling
Roads, railways and waterways such as back-filling tunnel lining (especially small cross section and long-distance).
Structures (dam, dyke, abutment pier, box culvert, etc.) foundation
Back side of riverbank and quay wall (Soil draw-out prevention and scour suppression)
Back of mortar spray slope surface
Opening cracks in the bedrock
・Grouting of ground anchor
・Occlusion
Buried pipe (water pipe/sluice pipe)Coal mine, tunnel, etc.
Scope of application
Required Strength 1.5-24N/mm2
・Filling target
Size: width 1cm or more cavities, interspacesCondition: Limited to in air, in water (spring water, perched groundwater (pool), still water (no flow))
・High effect is expected as following.
Water-side construction concerned water contamination.Repair of the structure needing high strengthCavity filling for long distance tunnel (Long-distance pumping record : more than 1000m)
Main features
Parfait grout method is NITTOC CONSTRUCTION's original repair/reinforcement method that combined with the cement filler " parfait grout" and the equipment "parfait plant".
Main features of Parfait grout
・Main features of Parfait grout
Plasticity
Antiwashout
Excellent in non-shrinkage
Various compunds
4 types of composition satisfy with various demand; No.1 (Long distance), No.2 (Lightweight), No.3 (High strength), No.4 (Air-mortar). Grout composition is flexible according to the condition or situation.
・Main features of Parfait Plant
Adopting inline mixing system
Automation control system of injection volume and pressure by a computer.（COGMA-System）