Công nghệ xử lý lún vệt bánh xe đường lát nhựa đường Giới thiệu công nghệ và giải pháp phòng chống lún đường English

Asphalt Surface Maintenance with Sedimentation Reinforcement Table of Contents I Road Sedimentation in Vietnam II Reinforcement Approach III Maintenance Techniques • GPCON • RE-ASCON IV Construction Report • GPCON • RE-ASCON I Road Sedimentation in Vietnam II Reinforcement Approach III Maintenance Techniques • GPCON • RE-ASCON IV Construction Report • GPCON • RE-ASCON Rode Sedimentation in Vietnam Cause of Sedimentation •Mix or Tamping Failure in Asphalt •Increase Overloaded Vehicles •Insufficient Reclamation Work •Void on Underground or Sink on Middle-ground •Water Inflow from Sandy Soil Part to Pave(Sink Hole) •Groundwater Inflow – Causes Hole, Ground Soften, Groundwater Level Change • Soft Ground Level Difference I Road Sedimentation in Vietnam II Reinforcement Approach III Maintenance Techniques • GPCON • RE-ASCON IV Construction Report • GPCON • RE-ASCON Reinforcement Approach •GPCON: Soft Ground Reinforcement or Restoration Technique + •RE-ASCON: Asphalt Surface Maintenance Technique Purpose of the Technique •Prevent Traffic Accident by Excessive Road Sedimentation •Provide Comfort Drive •Prevent Asphalt Surface Aging and Degradation •Expand Asphalt Life Span I Road Sedimentation in Vietnam II Reinforcement Approach III Maintenance Techniques • GPCON • RE-ASCON IV Construction Report • GPCON • RE-ASCON • GPCON GPCON 1)GPCON •Reinforcement or Restoration Method for soft or unstable ground by using swelling stress of Micro-dense Polyurethane 2)Principle •Widely used in Concrete Structure, Large Breakwater, etc •GPCON is expended when it is exposed on the air It fills up the underground to increse the density of the soften ground Reinforce Bearing Capacity & Shearing Strength of Ground • Capacity of Volume expansion - over 20~30 times, • Inflation pressure - (50~1,000ton/m²) 4)Friction •The friction test show no difference – no skid(slippery) after RE-ASCON Construction Effect of RE-ASCON 1)Monitoring after Construction •2 years later – Surface of aggregate has been worn down, but others are FINE •RE-ASCON Application Highway Surface Condition Closed View Highway Surface Condition Closed View •No RE-ASCON Comparison to Others 1) Comparison to Existing Application RE-ASCON Existing Asphalt Plaining Method Flattening Equipment Strength Weakness Econ Lifetime Repavement Asphalt Distributor, Breaker, loader, Furnishing roller, etc Surface Smooth RE-ASCON Application Workers or Routing Equipment No waste, Prevent Pothole, Shrink Calcium Cloride, Simple Construction, Waterproofness Pothole, Waste, Traffic Control Bumpy road control ≒USD17 / ㎡ ≒USD8 / ㎡ - 3~5 yrs (cut-and-cover every 5cm) Automation - 5~8 yrs (per kg/ ㎡ 2) Compare with Similar Technique RE-ASCON STAR SEAL SLURRY SEAL Life time 5~8 년 3~5 년 3~4 년 Load Control Dismiss After Application 1~2 hrs 24 hrs 24hrs Restoration Ability Yes No No UV Block out - - Type of Asphalt Coating Coating Pavement Thin Surfacing Thin Surfacing Waterproofness Superior good - Maintenance Apply on the top - Remove and Reapply 3)Strength of RE-ASCON •Simple Construction •No heavy equipment needed, quick curing •Prevent Pothole due to Waterproofness (Preservative Maintenance) •Restoration & Regeneration by recovering Bitumen Elasticity & Adhesion •5~8 yrs Lifetime of Asphalt •Superior Chemical Reaction •Eco-friendly with no Waste •No CO2 for replacement I Road Sedimentation in Vietnam II Reinforcement Approach III Maintenance Techniques • GPCON • RE-ASCON IV Construction Report • GPCON • RE-ASCON GPCON 1)Reinforcement Construction in Highway Before Construction 38mm Sedimentation GPCON Application Reinforcement Pipe Installation Pipe Removal &Finishes 2)Sink Hole Reinforcement Sink Hole Closed View Drilling Pipe Installation Before After 3)Underground Reinforcement •Underground Reinforcement due to on Sunken Area Drilling(16mm x 1m) Drilling(16mm x 1m) Reinforcing Ground Reinforcing Drilling(16mm x 1m) Check Finishes Ground Reinforcing 4)Subway Underground Box Reinforcement •Reinforcement/cutoff of sunken area in Subway 공동 GPR Exploration : Pre-Constructed 공동 GPR Exploration : After Construction 5)Transformer Area Reinforcement •Sunken Area near Transformer(Narrow, small Space) Site Check Reinforcement Void Check Reinforcement Drilling(16mm) Level Check RE-ASCON 1)Banpo Bridge, Seoul Before Application Application Finishes 2)Gimpo Airport Int’Terminal Before Application Application Finishes 3)Seoul Outbound Express Highway, Incheon Before Application Application Finishes 4)Jayang Express Highway, Seoul Before Application Application Finishes 5)Express Highway, the Central Inland Before Application Application Finishes 6)Kyeongbu Express Highway, near Tunnel, Dae-jeon Before Application Application Finishes 7)Road Construction, Bucheon Stadium Before Application Application Finishes 8)Munhak Stadium, Incheon Before Application Application Finishes