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

Asphalt Surface Maintenance with Sedimentation Reinforcement... Cause of Sedimentation• Mix or Tamping Failure in Asphalt • Increase Overloaded Vehicles •Insufficient Reclamation Work •V

Asphalt Surface Maintenance with S

edimentation Reinforcement

Table of Contents

I Road Sedimentation in Vietnam

II Reinforcement Approach

I Road Sedimentation in Vietnam

I Road Sedimentation in Vietnam

II Reinforcement Approach

III Maintenance Techniques

IV Construction Report

1 Rode Sedimentation in Vietnam

2 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

II Reinforcement Approach

I Road Sedimentation in Vietnam

III Maintenance Techniques

IV Construction Report

1 Reinforcement Approach

• GPCON: Soft Ground Reinforcement or Restoration Technique +

•RE-ASCON: Asphalt Surface Maintenance Technique

2 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

IV Construction Report

• GPCON

1 GPCON

1)GPCON

•Reinforcement or Restoration Method for soft or unstable ground by using swelling stress of Micro-dense Polyurethane

•Widely used in Concrete Structure, Large Breakwater, etc

•GPCON is expended when it is exposed on the air It fills up the

under-ground to increse the density of the soften under-ground.

Reinforce Bearing Capacity & Shearing Strength of Ground

• Capacity of Volume expansion - over 20~30 times,

• Inflation pressure - (50~1,000ton/m²)

2)Principle

2)GPCON Technical Diagram

Apply

GP-CON-A

Apply CON-B

3)GPCON Inflation Diagram

GPCON 지지지지지

Application available upto 4.5m~5m

GPCON Inflation Gun

Max Inflation Radius:4m

Concrete

Max Drilling:1.5m

Max Inflation Depth:1.5m

Max Inflation sion:1.5m

Expan-GPCON Expansion Soft Ground

Inflation Pipe(12mm)

4)Sectional Diagram of Reinforcement

5)Slab Restoration after GPCON Inflation

Concrete

Slab Concrete Slab

GPCON

6)GPCON Application Process

Reinforcement GPCON Application

136.5 GPCON Compression Strength Chart

2)Compression Strength Test

3)Tensile Strength Test

•GPCON is Semi-permanent since there is no change of the compression strength on the Test period.

•No Change for Tensile Strength

4)Compression Strength Test by Temp Change

5)Compression Strength Test by Density Change

•GPCON shows slight change on Compression Strength Test by Temp Change

•Density and Compression Strength are Proportionally Increased(Density : C.S = 2 : 3)

6)Vibration Measurement by Cyclic Load

•GPCON has over 10 times of the effect of vibration reduction by cyclic loading test, and no contraction shows on cyclic loading test

7)Soil Pollution Level

•This Comparison test shows how ica has soil pollution substance after inflate GPCON in underground

Sil-•Test Result: GPCON doesn’t

con-tain harmful environment stance.

sub-Standard Value

Water Inflate GPCON Expending

8)Reaction Test of GPCON with Water

3 GPCON Application Area

2)Commercial & Residential Area

•House, Factory, Building, Parking Lot, etc

3)Industry

•Oil, Chemical, Plant, Tank, Shipyard

1)Highway, Port, Railroad, Airport, Bridge

•Dike Construction, Dam, Canal, Reservoir, Sewerage System, Waterway

1) Comparison to other Technique

Material •Hardener, Cement, etc. Micro Particle Reinforcing Agent, • Micro-dense Polyurethane

• Complete Underground Fill-in

• Stable Bearing Power with wide face Application

Sur-• Inactivated w/ water

• Lightweight

• Low Unit Weight

• Permeability isn’ t matter for struction

con-• Fast Construction

Weaknesses

• Cement Contraction after Inflate

• Control Difficulty of Inflation quantity / curing time

• Long Curing time

• Work Difficulty in small space

• Unit Weight 2.3Ton/m3

• Low consturction ability on High meability ground

Per-• Side structure affection

• Expertise needed

• High Price

4 Comparison to Others

2)Strength of GPCON

•Inactivated with water

•24hour workable without affecting side structures(Hardening Time:15min.)

•No harmful environment substances

•No contraction, expansion, deterioration Semi-permanently after Inflation

•Precise Restoration feasibility

•Workable in small space

•Free for Temp restriction

•Water cutoff, Anti-vibration

•Able to control Inflation quantity and area

• RE-ASCON

• RE-ASCON

1 RE-ASCON

1) Cause of Asphalt Corrosion

• UV and Moist Exposure

• Loss of Asphalt’s Elasticity and Adhision

• Cracks Due to Diminishing Adhision between Aggregates

•Oxidation Due to Acid Rain, Creak Increasing by Air Circulation

• Corrosion of Asphalt due to its Short Lifespan

• Component of MICRO-BITUMAN POLYMER

• Maintenance Technique to cover Asphalt Surface to restore and reclaim the decrepit Bituman

•Blocks Asphalt Aging and Deterioration caused by Temp Change,

UV, other Chemical reaction

Surface Film Formation Gas Penetration

• Phase 1: Asphalt Surface Reinforcement

• Phase 2: Pothole Covering

• Phase 3: Cracks Covering

• Phase 4: RE-ASCON Application and Curing 3)RE-ASCON Application Process

Crack Cover w/ RE-ASCON Detail View

•Porosity: Porosity declines after RE-ASCON Application

•Waterproofness: Asphalt

ity (%)

Poros-BPN

tion Velocity (sec)

Penetra-Note

Untreated (19mm) 7.0 - 82.9

Indoor Manu- fac- tured Slab Test Piece

19mm

fore 6.2 - -

Be-After 5.1 -

immeasur-able

13mm

fore 7.5 - -

Be-After 6.2 -

immeasur-able

On Site

fore - 59.0 - On

4)Friction

•The friction test show no difference – no skid(slippery) after RE-ASCON Construction

3 Effect of RE-ASCON

1)Monitoring after Construction

•2 years later – Surface of aggregate has been worn down, but others are FINE

•No RE-ASCON

•RE-ASCON Application

1) Comparison to Existing Application

Strength

Surface Smooth No waste, Prevent Pothole, Shrink Calcium Cloride, Simple Construction,

Waterproof-ness Weak-

2) Compare with Similar Technique

-Type of Asphalt Coating Coating Pavement Thin Surfacing Thin Surfacing

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

1 GPCON

1)Reinforcement Construction in Highway

2)Sink Hole Reinforcement

3)Underground Reinforcement

Drilling(16mm x 1m) Reinforcing Ground Reinforcing Check Finishes

•Underground Reinforcement due to on Sunken Area

Drilling(16mm x 1m) Drilling(16mm x 1m) Ground Reinforcing

4)Subway Underground Box Reinforcement

5)Transformer Area Reinforcement

2 RE-ASCON

1)Banpo Bridge, Seoul

2)Gimpo Airport Int’Terminal

3)Seoul Outbound Express Highway, Incheon

4)Jayang Express Highway, Seoul

5)Express Highway, the Central Inland

6)Kyeongbu Express Highway, near Tunnel, Dae-jeon

7)Road Construction, Bucheon Stadium

8)Munhak Stadium, Incheon