DEPARTMENT OF TRANSPORT

1
DEPARTMENT OF TRANSPORT PUBLIC WORKS

• FOAMED ASPHALT WORKING GROUP E. SADZIK

2
Background

• Experimental sections on P243/1 (foamed
  bitumen and emulsion)
• HVS testing
• Laboratory testing
• Workshop on design and construction of
  foamed bitumen treated bases

3
Workshop (29/01/2001)

• Issues discussed
• Difference between ETB and FA
• Design criteria for FA
• Cement content
• Standardization of tests
• Acceptance limits for foaming properties of
  SA bitumen
• Construction quality control

4
Working Group

• Kim Jenkins - US
• Dave Collings - AAL
• Joe Grobler - VKE
• Mervyn Henderson - Western Cape
• Enrico Fletcher - Gautrans
• Elzbieta Sadzik - Gautrans
• Hennie Loots - SRT
• Johan Calitz - Africon
• Hechter Theyse - CSIR
• Nicol van der Walt - Argus Gibb

5
Guidelines for Design and Useof Foamed Asphalt

• Framework
• Selection Criteria for Suitable Projects
• Mix Design Considerations
• Mix Design of Low Bitumen Content
• (Modification)
• Mix Design of Higher Bitumen Content
• (Stabilization)
• Structural Design and Performance of FA
• Construction Issues

6
Guidelines for Design and Useof Foamed Asphalt

• Time frame
• Mix Design - end June
• Construction Issues - end June
• Structural Design - end November

7
Guidelines Comments
E - mail to flong_at_csir.co.za