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  • Summary of LTTP Emulsion and Foamed Bitumen Treated Sections

    Technical Memorandum

    Final

    March, 2007

    PREPARED FOR:

    Gauteng Department of Public Transport, Roads and Works Directorate: Design Private Bag X3 Lynn East, 0039

    SABITA Postnet Suite 56 Private Bag X21 Howard Place 7450

    PREPARED BY:

    Modelling and Analysis Systems CC. PO Box 882 Cullinan 1000 (www.modsys1.com)

    Authors:

    F Long

    F Jooste

    Technical Memorandum CSIR/BE/IE/ER/2007/0006/B

  • Acknowledgements

    - I -

    ACKNOWLEDGEMENTS

    The sponsors of this project; Gauteng Department of Transport, Roads and Public Works (represented for this study by Elzbieta Sadzik) and SABITA (represented by Trevor Distin and Piet Myburgh) are gratefully acknowledged. The project has been managed by Les Sampson of the Asphalt Academy. Successful completion of this project could only be realised by enlisting the help of many people who willingly contributed their time, effort and resources. The following people are specifically acknowledged for their valuable input to the project (by organisation and alphabetical order). • ASCH Consulting Engineers: Shaheen Nackerdien • Africon: Pablo Balmaceda • Arcus Gibb: Nichol van der Walt • BKS: Nick Kong and Ofal Motlankene • Cayad: Heuppeschenne Lekay • City of Cape Town: Mark Bondietti • CSIR: Adrian Bergh, Louw du Plessis, Dave Jones, Wynand Steyn and Hechter Theyse • Freetrans: Karl Arnold and Deirdre Elsmere • Gautrans: Alison Burger, Enrico Fletcher, Elzbieta Sadzik and Valerie van Staden • Goba Moahloli Keeve Steyn: John Hodgson, Mike Kelly, Brian Spottiswoode (retired), Andre

    Ungerer and Tom van Zyl • HHO: Andrew Laatz • Jeffares and Green: Paul Olivier • Kwazulu-Natal: Pat Dorkin, Rob Lindsay, Mike Proudfoot • Kwezi-V3: Trevor Morgan • Loudon International/Siyenza: Dave Collings, Barry Nothard and Erik Uppink • Madan Singh and Associates: Ridwaan Ghany • MicroZone: Johan Smit • Ndodana Consulting Engineers: Henk Diedericks and Martinus Wilken • Norwegian Public Works Department: Charles Overby • SANRAL: Rob Damhuis, Nuno Gomez, Ron Harmse, Louw Kannemeyer, Werner Lategan, Renaldo

    Lorio, Dennis Rossmann, Corne Roux, Fanie van Aardt, Kobus van der Walt and Mias Wiese • SCIP: Ben Botes • SNA: Johan Opperman and Rudi van Huyssteen • Stewart Scott International: Jaco Liebenberg • TRAC: Gawie Jordaan • Tshepega: Gerrit Jordaan and PW de Bruin • University of Pretoria: Emile Horak • UWP: Mike White, Adrian Skea • Vela-VKE: Mynhardt Augustyn, Derek Burger, Joe Grobler, Simon Kotze, Arthur Taute and John de

    Wet • WCPA: Sydney Crocker, Mervyn Henderson and Andre van der Gryp • WSP: Andries Bester, Hugh Thompson, Mike Hughes (independent), Hennie Landman, Chris Roux

  • Table of Contents

    - I -

    TABLE OF CONTENTS

    ACKNOWLEDGEMENTS..............................................................................................................................I 1 BACKGROUND AND INTRODUCTION ............................................................................................1 1.1 Project Objectives ..........................................................................................................................1 1.2 Scope and Context of This Document ...........................................................................................1 1.3 Report Structure.............................................................................................................................2 2 METHOD OF DATA COLLECTION ...................................................................................................3 2.1 Identifying and Collecting Data for BSM Sections .........................................................................3 2.2 Emulsion and Foamed Bitumen Sections Identified ......................................................................3 3 SELECTION AND PRÉCIS OF LTPP SECTIONS INVESTIGATED.................................................9 3.1 Selection of Sections to Investigate ...............................................................................................9

    3.1.1 Identification of Deficiencies in Collected Data....................................................................9 3.2 LTPP Sections investigated .........................................................................................................10 3.3 Précis of LTPP Sections ..............................................................................................................11

    3.3.1 D2388 (Cullinan) ................................................................................................................11 3.3.2 MR27 (near Stellenbosch) .................................................................................................11 3.3.3 N1 Section 1 (Kraaifontein)................................................................................................12 3.3.4 N1 Section 13 (Springfontein and Trompsburg) ................................................................12 3.3.5 N1 Section 14 (Springfontein and Trompsburg) ................................................................12 3.3.6 N2 Section 16 (Kwelera, East London)..............................................................................13 3.3.7 N2 Section 20 (Mount Frere to Mount Ayliff) .....................................................................13 3.3.8 N3 Section 4 (near Mooi River) .........................................................................................13 3.3.9 N3 Section 12, Northbound (Modderfontein to Buccleugh)...............................................14 3.3.10 N3 Section 12, Southbound (Modderfontein to Buccleugh) ..............................................14 3.3.11 N4 Section 1 (Scientia interchange to Pienaars River) .....................................................14 3.3.12 N4 Section 5X (Wonderfontein to Crossroads, KM 20 to 25)............................................14 3.3.13 N4 Section 5X (Wonderfontein to Crossroads, KM 27.6 to 30.6)......................................15 3.3.14 N7 Section 7 (near Kammieskroon)...................................................................................15 3.3.15 N12 Section 19 (near Daveyton, Experimental Section 1) ................................................15 3.3.16 N12 Section 19 (near Daveyton, Experimental Section 2) ................................................16 3.3.17 P23/1 (Kroonstad to Steynsrus).........................................................................................16 3.3.18 Road 1386 (Moloto Rd), Stabilised Subbase ....................................................................16 3.3.19 Road 1386 (Moloto Rd), Unstabilised Subbase ................................................................17 3.3.20 MR504 (near Shongweni)..................................................................................................17 3.3.21 N11 Section 8 (Ermelo to Hendrina)..................................................................................17 3.3.22 P24/1 (near Vereeniging)...................................................................................................18 3.3.23 P243/1 (near Vereeniging).................................................................................................18 3.3.24 R22-4 (MR439) (near Phelandaba) ...................................................................................18 3.3.25 Same-Himo (Tanzania)......................................................................................................18 3.3.26 TR16-3 (R27) (Nieuwoudtville to Calvinia) ........................................................................19 3.3.27 Summary of Key Information from LTPP Summaries........................................................19

    4 IDENTIFICATION OF TRENDS........................................................................................................22 5 SUMMARY AND RECOMMENDATIONS ........................................................................................26 5.1 Summary......................................................................................................................................26 5.2 Recommendations .......................................................................................................................26 6 REFERENCES..................................................................................................................................27 APPENDIX A: PROJECT WORK PROPOSAL.........................................................................28 APPENDIX B: LTPP SUMMARIES ...........................................................................................29

  • Lists of Table and Figures

    - II -

    LIST OF FIGURES

    Figure 1: Visual Summary of LTPP Sections (Foamed Bitumen Sections)..................................... 24 Figure 2: Visual Summary of LTPP Sections (Emulsion Sections).................................................. 25

    LIST OF TABLES

    Table 1: List of Emulsion Roads ........................................................................................................5 Table 2: List of Foamed Bitumen Roads ...........................................................................................8 Table 3: Pavement Structures for MR504 Sections ....................................................................... 17 Table 4: Summary of LTPP Sections Information used in Structural Design Metho

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