1. X:\Presentations\FBworking groupRPFnov02.ppt DEPARTMENT OF TRANSPORT & PUBLIC WORKS FOAMED BITUMEN WORKING GROUP Road Pavement Forum- Nov 2002 E. SADZIK

2. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Background l Created on RPF May 2001 l Objective  Compile SA experience on FB  Conduct HVS testing  Conduct comprehensive lab testing  Prepare guidelines

3. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Process l Experimental sections on P243/1 (G6, 1.8% FB + 2% cement) l Workshop on draft guidelines held with the work group l Workshops for launch of guidelines held in Gauteng, KZN, Eastern Cape and Western Cape in September 2002

4. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Guidelines l Published by Asphalt Academy www.asac.csir.co.za asac@csir.co.za

5. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Issues related to FB l Lab versus field compaction l Effects of temp in lab on the measured properties l Effects of fillers: lime, slag l Need for better than ITS flexibility test l Need for “simple triaxial test” for shear parameters l Moisture damage in foamed mixes

6. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Issues related to FB l Need for SA data base on foamed bitumen treated layers

7. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Sponsors of Technical Guidelines: The Design and Use of Foamed Bitumen Treated Materials l SABITA l Gautrans

8. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group l Kim Jenkins - US l Dave Collings – AAL l Fenella Long - CSIR l Joe Grobler - VKE l Mervyn Henderson - Western Cape l Enrico Fletcher - Gautrans l Elzbieta Sadzik - Gautrans l Hennie Loots - SRT l Johan Calitz - Africon l Hechter Theyse – CSIR l Nicol van der Walt - Argus Gibb l Mike White - UWP

9. X:\Presentations\FBworking groupRPFnov02.ppt Foamed Bitumen Working Group Future work: l N7 - G2, 1.8% FB + 1% cement l HVS testing l Comprehensive lab testing l Revision of guidelines – September 2003

10. X:\Presentations\FBworking groupRPFnov02.ppt l HVS TESTING ON N7 IN CAPE TOWN

11. X:\Presentations\FBworking groupRPFnov02.ppt N7 project sponsors: l SANRAL l Gautrans l Western Cape Foamed Bitumen Working Group