Recycling Presentation DONE BY RAD INTERNATIONAL ROAD CONSTRUCTION

RAD INTERNATIONAL : 

RAD INTERNATIONAL SAVE OUR RESOURCES

Slide 3: 

INTRODUCTION TO RECYCLING

Various Methods of Asphalt Recycling : 

Various Methods of Asphalt Recycling 1. Hot In-Place Recycling 2. Stationary Asphalt Recycling (With Foamed-Bitumen or Emulsion and Cement) 3. Cold In-Place Recycling (With Foamed-Bitumen or Emulsion and Cement)

1. Hot In-Place Recycling : 

1. Hot In-Place Recycling In this method asphalt surface will heat up to 100 to 120 degree with special panels.

In this stage soft asphalt will be milled and fresh asphalt will be mixed due to the mix design andwill lay in a single pass. : 

In this stage soft asphalt will be milled and fresh asphalt will be mixed due to the mix design andwill lay in a single pass.

Stationary Asphalt Recycling With Foamed Bitumen or Emulsion and Cement : 

Stationary Asphalt Recycling With Foamed Bitumen or Emulsion and Cement In this method asphalt layer will mill of from the surface. Stocked material will be graded and according to the mix design fresh aggregate and additives (such as foamed bitumen or emulsion and cement) will be add inside the plant. The final mix will transfer to the job site to be used as base or sub-base layer.

Slide 9: 

INTRODUCTION TO THE ASPHALT RECYCLING WITH THE FOAMED-BITUMEN AND CEMENT TECHNOLOGY

Slide 10: 

Foam bitumen is a mixture of air, water and bitumen. It’s typically 98% bitumen and 2% water. It’s produce by injecting the cold water onto the hot bitumen (180ºC) bitumen in a foaming chamber.

Foamed Bitumen : 

Foamed Bitumen Hot Bitumen Cold Water Air Expansion Chamber Foam Expanded Volume Aids Distribution During Mixing Also Called “Foamed Asphalt”

Slide 12: 

ADVANTAGES OF FOAMED ASPHALT MIXES

Slide 13: 

The following advantages of foamed asphalt are well documented: 1- The foamed binder increases the shear strength and reduces the moisture susceptibility of granular materials. The strength characteristics of foamed asphalt approach those of cemented materials, but foamed asphalt is flexible and fatigue resistant. 2- Foam treatment can be used with a wider range of aggregate types than other cold mix processes. 3- Reduced binder and transportation costs, as foamed asphalt requires less binder and water than other types of cold mixing.

Slide 14: 

4- Saving in time, because foamed asphalt can be compacted immediately and can carry traffic almost immediately after compaction is completed. 5- Energy conservation, because only the bitumen needs to be heated while the aggregates are mixed in while cold and damp (no need for drying). 6- Environmental side-effects resulting from the evaporation of volatiles from the mix are avoided since curing does not result in the release of volatiles.

Slide 15: 

7- Foamed asphalt can be stockpiled with no risk of binder runoff or leeching. Since foamed asphalt remains workable for very extended periods, the usual time constraints for achieving compaction, shaping and finishing of the layer are avoided. 8- Foamed asphalt layers can be constructed in adverse weather conditions, such as in cold weather or light rain, without affecting the workability or the quality of the finished layer. 9- Preserving initial level of the road. 10- Daily high performance system that is incomparable to conventional method . 11- Modifying transverse and longitudinal profile of road.

Recycling Procedures in Pictures : 

Recycling Procedures in Pictures

Mixing Chamber : 

Mixing Chamber

Checking The Recycling Thickness : 

Checking The Recycling Thickness

Initial Compaction of The Recycled Material : 

Initial Compaction of The Recycled Material

Recycled Area Ready For Re-shaping : 

Recycled Area Ready For Re-shaping

Profiling The Recycled Layer : 

Profiling The Recycled Layer

Final Compaction of The Layer : 

Final Compaction of The Layer

Final Condition of The Surface : 

Final Condition of The Surface

LABORATORY MIX DESIGN PROCEDURES : 

LABORATORY MIX DESIGN PROCEDURES

Sampling The Material From The Road : 

Sampling The Material From The Road

Slide 26: 

Lab Unit to Produce Foamed-Bitumen

Cross Section of a Crushed Briquette : 

Cross Section of a Crushed Briquette

Daily Quality Control : 

Daily Quality Control ITS (Dry and Soak) Marshal Stability Flow Bitumen Content Moisture Content Field Density

STRUCTURAL DESIGN : 

STRUCTURAL DESIGN

Tabarja - Chekka Rehabilitation Project (Beirut to Tripoli)(daily traffic= 60000vpd with 20% Heavy Vehicles) : 

Existing Cross Section Type 1 Tabarja - Chekka Rehabilitation Project (Beirut to Tripoli)(daily traffic= 60000vpd with 20% Heavy Vehicles) Existing Cross Section Type 2 Recycling Method Traditional Method SUB-BASE 40 BASE 30 BASE 30 ASPHLAT 17 SUB-BASE 40 BASE 22 RECYCLED 25 ASPHLAT 5 SUB-BASE CTB LAYER ASPHLAT 40 15 10 SUB-BASE ASPHLAT 40 BASE 30 15

COMPARISON GRAPHS : 

COMPARISON GRAPHS

Cost Saving - Cost Per Square Meter : 

Cost Saving - Cost Per Square Meter

Raw Material Saving Graph : 

Layer Thicknesses (Cm) Raw Material Saving Graph

Time Saving Graph : 

Time Saving Graph Duration (Month)

Slide 38: 

PROJECTS PHOTOS

Slide 39: 

MINIEH PROJECT (TRIPOLI - LEBANON) Length: 9 KmTotal Area: 82,000 m^2Duration: 45 working days

Carriage Way Condition Before Recycling : 

Carriage Way Condition Before Recycling

Lime Stabilization : 

Lime Stabilization

Extra Cement Due To High PI : 

Extra Cement Due To High PI

Carriage Way After Recycling : 

Carriage Way After Recycling

Recycled Carriage Way Ready To Pave : 

Recycled Carriage Way Ready To Pave

Paving In Progress : 

Paving In Progress

Slide 46: 

SIN EL FIL-WEST LANE (BEIRUT) Length: 900 mTotal Area: 8,100 m^2Duration: 10 hours

Recycling of The In-Situ Material : 

Recycling of The In-Situ Material

Final Recycled Layer : 

Final Recycled Layer

Slide 49: 

SIN EL FIL-EAST LANE (BEIRUT) Length: 1,100 mTotal Area: 10,450 m^2Duration: 12 hours

Recycling in Progress With Imported Material : 

Recycling in Progress With Imported Material

Final Recycled Layer With The Imported Material : 

Final Recycled Layer With The Imported Material

Final Recycled Layer With The Imported Material : 

Final Recycled Layer With The Imported Material

Slide 53: 

ANTELLIAS MAIN ROAD (BEIRUT) Length: 4,000 mTotal Area: 32,000 m^2Duration: 10 working days

Recycling in Progress : 

Recycling in Progress

Recycling in Progress Without Interruptingthe Traffic Flow : 

Recycling in Progress Without Interruptingthe Traffic Flow

Recycling of The In-Situ Material : 

Recycling of The In-Situ Material

Slide 57: 

TABARJA CHEKKA HIGHWAY BEIRUT Length: 80 KmTotal Area: 720,000 m^2Duration: 210 working days

Road Condition Prior to Recycling Process : 

Road Condition Prior to Recycling Process

Road Condition Prior to Recycling Process : 

Road Condition Prior to Recycling Process

Recycling In Progress : 

Recycling In Progress

Recycling In Progress : 

Recycling In Progress

Recycling In Progress Inside The Tunnel : 

Recycling In Progress Inside The Tunnel

Longitudinal Profile Adjustment : 

Longitudinal Profile Adjustment

Finishing Process of the Recycled Layer : 

Finishing Process of the Recycled Layer

Paved Recycled Carriage Way : 

Paved Recycled Carriage Way

Slide 66: 

HALBA-QOUBAYAT PROJECT Length: 12 KmTotal Area: 120,000 m^2Duration: 35 working days

Road Condition : 

Road Condition

Preparation Of The Carriage Way For Recycling : 

Preparation Of The Carriage Way For Recycling

Milling and Excavating the Carriage Way Priorto Recycling : 

Milling and Excavating the Carriage Way Priorto Recycling

Prepared Road for Recycling : 

Prepared Road for Recycling

Recycling In Progress : 

Recycling In Progress

Recycling In Progress : 

Recycling In Progress

Profiling the Recycled Road : 

Profiling the Recycled Road

Intersection Boarder of Recycled and Asphalt : 

Intersection Boarder of Recycled and Asphalt

Finished Recycled Surface : 

Finished Recycled Surface

Preparing the Recycled Surface For Paving : 

Preparing the Recycled Surface For Paving

Paving in Progress : 

Paving in Progress

Slide 78: 

ABDEH ABOUDIEH PROJECT (SYRIA) Length: 12 KmTotal Area: 102,000 m^2Duration: 50 working

Carriage Way Condition Before Recycling : 

Carriage Way Condition Before Recycling

Carriage Way Condition Before Recycling : 

Carriage Way Condition Before Recycling

Carriage Way Condition Before Recycling : 

Carriage Way Condition Before Recycling

Recycling In Progress : 

Recycling In Progress

Compacting The Recycled Material : 

Compacting The Recycled Material

Profiling The Recycled Material : 

Profiling The Recycled Material

Finished Recycled Surface : 

Finished Recycled Surface

Finished Recycled Surface : 

Finished Recycled Surface

Paved Carriage-Way : 

Paved Carriage-Way

Paved Carriage-Way : 

Paved Carriage-Way

THANK YOU : 

THANK YOU