OLD CONCRETE MAKES WAY FOR NEW ASPHALT A Laatz, N Cocks, N Burger

Slides:



Advertisements
Similar presentations
Innovations on the Asphalt Mix Design for the Rehabilitation of National Route 3 between Mariannhiill and Key Ridge Jaco Liebenberg Dennis Rossmann Philip.
Advertisements

Sub-Grade Preparation-Equipment Caterpillar Paving Products
Concrete Test Section RPF 8 May Objectives Design details Material properties Instrumentation Traffic Construction Conclusion Outline.
Highway Engineering Pavement Types
HRVATSKO ASFALTERSKO DRUŠTVO COLD IN SITU RECYCLING AND VERY THIN ASPHALT CONCRETE - FRENCH TECHNOLOGY JP MICHAUT SEMINAR ASFALTNI KOLNICI 2015 OPATIJA,
20 th National Trails Symposium The Long and Short of Trail Maintenance.
Asphaltic Concrete Mix Design
Recycling….the re-use of sealed roads Andrew Silvestri, Account Manager ResourceCo Roads & Works Conference – August 2012.
TOPIC OF THE DAY Flexible Pavement Distresses/Failure Of Structure.
Full-Depth Reclamation Using a Cement Slurry Spreader Attached to a Ready Mixed Concrete Truck W. Spencer Guthrie, Ph.D., Associate Professor Charles A.
Bases, Subbases, & Low Cost Surfaces
ROADS. Roads Introduction Transportation engineering is one of the most important branches of civil engineering. Transportation means conveyance of human.
Pavement Design Terms and Concepts
California Asphalt Rubber Case Studies – Reduced Thickness Jack Van Kirk Basic Resources.
Inverted Pavements Project: CSSTP (292)01 Troup County “South LaGrange Loop” Georgia Construction Aggregates Associations 2009 Management Workshops.
Material Supply Capacity in the Road Sector Aggregate Producers Perspective May 2006 Alex Hall General Manager Holcim Aggregate and Readymix (KZN)
Surface Rehabilitation Treatments
CONCRETE MANUFACTURERS ASSOCIATION CONCRETE MANUFACTURERS ASSOCIATION Quality cast in concrete.
ROAD PAVEMENT FORUM MAY 2007 ASPHALT RECYCLING. Recycling Energy consumption of recycled asphalt layers can be as little as 25% of that needed for new.
Recycling and Reclamation of Airfield Pavements 35 th Airports Conference FAA Eastern Region, Hershey, PA April 4, 2012 Campbell & Paris Engineers, 35.
Conventional Pavement Structure inches Graded Aggregate Base inches Asphaltic Concrete Paving Prepared Subgrade stress.
Street and Local Roads Inspection and Acceptance of Alternative Pavements.
Success with Alternatives to Paving Mr. Chuck Fromelt Day County Highway Superintendent Webster, South Dakota.
Ultra Thin Continuously Reinforced Concrete - Modelling &Testing under APT Louw Kannemeyer (SANRAL) Bryan Perrie (C&CI) Pieter Strauss (Consultant) Louw.
Pavement Maintenance II
Presentation to the Portfolio Committee on Transport by Joe Odhiambo CEO, Agrément South Africa 15 March 2011.
Technical Services By Nathan Haaland.  Increase in Construction Costs  Asphalt  $350 to $735 per ton  Labor  3.6% increase  Inflation  13% increase.
Partnership.tenacity.enjoyment.care New Zealand Airfield Pavement Surface Types – Evaluation, Design, Maintenance and Rehabilitation John Marsh General.
1 Reclaimed Asphalt Pavement in Arizona - Application and Verification October 3, 2008 Arizona Association of County Engineers.
Road Construction Technology
Paving & Surfacing Module #6 Prepared by Dr. Randy R. Rapp July 2005.
THE DESIGN OF POROUS PAVEMENT SHOULDERS AT RICHMOND INTERNATIONAL AIRPORT 33 rd Annual Airports Conference March 3, 2010 – Hershey, PA Presented by: H.
Pavement Types Dr. TALEB M. Al-ROUSAN.
Bases, Subbases, & Low Cost Surfaces Dr. TALEB M. AL-ROUSAN.
MODULE 1-2 Introduction to HMA Pavements. Learning Objectives Describe the types of (HMA) pavements Identify the role of each pavement layer Discuss key.
SESSION 9 Construction Considerations. Objectives  Describe key aspects of: Prepaving operations Paving operations Postpaving operations  Understand.
R52 Rustenburg-Koster Road
Surface Treatments #2.
Multi-Layer Systems By Vadim Kravtsov Intermountain Slurry Seal, Inc 1.
RE-USE and RECYCLING of CONSTRUCTION WASTES in FRANCE By Jean Paul Michaut.
Treatments and Resets. PerformanceIndex CompositeIndex Triggers Treatments PerformanceModeling ExpressionsAndFilters Costs Resets Outputs GenerateStrategiesOptimize.
Full Depth Reclamation
John Donahue, P.E. Missouri DOT 5 th Annual Building Green with Concrete Workshop June 21, 2012.
Jerry L. Larson IRMCA Indiana LTAP Basics of a Good Road
At Auburn University National Center for Asphalt Technology Accelerated Pavement Testing Facilities “APT”
Design Methods Flexible, Rigid & Composite CBR Method Asphalt Institute method National Crushed Stone Association Design Method California Method AASHTO.
CITY OF BELLEVILLE ROAD IMPROVEMENTS PROGRAM
Alabama Asphalt Pavement Association
Thin Hot Mix Asphalt Overlays PennDOT Research Findings
Design and Control of Concrete Mixtures CHAPTER 2
Supervised by Dr. Sami Hijjawi Prepared by Hamza Saifan
Authors: Trent McDONALD, Ernesto URBAEZ and Scott MCINTYRE
Presenters: Sumon Roy1 and Badrul Ahsan1
Pavement condition index calculation
Chapter(16) AASHTO flexible pavement design method
20th National Trails Symposium
PAVEMENTS CEE 320 Steve Muench.
2018 Pavement Workshop May 23-24, 2018
Paramix mid-term meeting in Barcelona November 13, 2002
Introduction to Pavement Design
2018 Pavement Workshop May 23-24, 2018
إختبار وتقييم المنشآت الخرسانية
THE UPGRADE OF 33.7 KM OF NATIONAL ROUTE N2, BETWEEN MTUNZINI TOLL PLAZA (SECTION 28, KM 42.7) AND EMPANGENI T-JUNCTION (SECTION 29, KM 13.0) CONTRACT.
Surface Treatments #2.
Document Development for Metro Project: Performance-based Procurement Asphalt Overlay for Programmed Maintenance 17/01/2019.
Pavement Structural Analysis
Pavement Structural Analysis
Pavement Overlay Design
NRRA Pavement Workshop 2019
Hoops, haddock, cascade, oriole, Ervin and valley view heights paving
Presentation transcript:

OLD CONCRETE MAKES WAY FOR NEW ASPHALT A Laatz, N Cocks, N Burger

1 INTRODUCTION CAPE TOWN CONGESTION ALMOST WORST IN SOUTH AFRICA NATIONAL ROUTE 2, CAPE TOWN INTERNATIONAL AIRPORT, BORCHERDS QUARRY INTERCHANGE – TRANSPORT HUB PROJECT – FIRST STAGE OF CONGESTION ALLEVIATION

First Impression for Visitors to Cape Town Project Area First Impression for Visitors to Cape Town

1 INTRODUCTION cont RE-CYCLING - DOWN-CYCLING OF CONCRETE AND ASPHALT MATERIALS CONSTRUCTION OF NEW ASPHALT BASED PAVEMENT LESSONS LEARNED

2 PROJECT BACKGROUND CONCRETE PAVEMENT 1970’s – AGGREGATE SULPHATE REACTION ASR/AAR MAINTENANCE WITH JOINT REPAIRS AND ASPHALT SEALING LAYERS

Background Old Jointed Concrete Pavement from mid 70’s exhibited distress related to ASR/AAR - Repaired Joints and Re-Sealed

Background Concrete Paving Train

Concrete Slip-Form Paver Background Concrete Slip-Form Paver

Handwork Edge Finishing Background Handwork Edge Finishing

Application of Curing Compound Background Application of Curing Compound

Revealing the Past Repaired Joints and Sealed with SAMI and bitumen rubber asphalt overlay

2 PROJECT BACKGROUND cont IMPROVE AND UPGRADE TRANSPORT HUB FOR PRESENT CONGESTION AND FUTURE DESIGN – ECONOMICS – RISK MITIGATION DESIGN - STAYING GREEN – RE-CYCLING - DOWN- CYCLING

3 PROJECT DESIGN TRANSPORT PLANNING – MEDIAN LANE PAVEMENT DESIGN - ALTERNATIVES MATERIALS DESIGN – CONCRETE / RAP BLEND AND ASPHALT LAYERS STRUCTURES DESIGN – PRESENT AND FUTURE

Median Lane Design Layer TRH14 Thickness Description UTFC 24 mm Friction Course 14mm stone - A-E2 AC 40 mm Dense Asphalt Surfacing – A-E2 BC 90 mm Dense Asphalt base – A-P1 Subbase 250 mm Subbase, 2 Layers of 125mm commercial stone stabilised with 3% cement. SSG 150 mm Selected Layer Commercial stone Subgrade Road Bed in-situ sandy material

Existing Reconstruction Layer TRH14 Thickness Description UTFC 24 mm Friction Course with 14mm stone – A-E2 AC 40 mm Dense Asphalt Surfacing – A-E2 BC 120/90 mm Dense Asphalt Base – A-P1 (2/1 lifts) Subbase 400/300 mm Subbase, layer 1 – 200/150 in-situ, layer 2 - 200/150mm reclaimed concrete and RAP blend, all stabilised with 3% cement. SSG    (Local Pioneering) 200 mm    300 mm Middle lane unstabilised in-situ, slow lane 3% cement stabilised acting as mole barrier. 200mm diameter dump rock and geotextile

4 CONSTRUCTION CONSTRUCTION PHASING GROUND WATER LOCAL EMPLOYMENT

Construction Phasing

Dealing with Water

Pioneering

Layerworks

Local Employment

4 CONSTRUCTION cont RECLAIMING ASPHALT RECLAIMING CONCRETE OFF-SITE CRUSHING AND BLENDING ON-SITE PROCESSING

Reclaiming Asphalt

Reclaiming Concrete

Lifted and Loosened

Pulverizing for Transport

Off-Site Crushing

Processing Green Blend

Compacting Green Blend

4 CONSTRUCTION cont BRIDGE WIDENING PLANNING FOR FUTURE INTERCHANGE

Precast Beams (BQ Bridge)

Piling for Future Interchange

Pile Caps & Dewatering

4 CONSTRUCTION cont LARGE STONE ASPHALT BASE - A-P1 ASPHALT WEARING COURSE - A-E2 ULTRA THIN FRICTION COURSE - A-E2

Asphalt Base Trial Section

Asphalt Surfacing

Asphalt Friction Course

5 LESSONS LEARNED ECONOMIC BENEFITS – BROADER ENVIRONMENT GRADING MODULUS AND WORKABILITY GRADING COMPLIANCE GOING GREEN USING SPOIL AND MAINTAINING STANDARDS

Aircraft View

Birds Eye View

Road User View