Foamed Asphalt Working Group Road Pavements Forum 13 November 2001

Origin of workgroup 2000 Phase I testing of foamed bitumen and emulsion- treated material HVS and initial laboratory test results available towards end of year 2001 Late January 2001, Gautrans workshop to disseminate results Steering committee selected at workshop Feedback at RPF in May, steering committee becomes an RPF working group (advisory role) Sabita funding, two additional members invited Phase II of guidelines managed by AsAc

Workgroup members E Sadzik E Fletcher/ T Lewis K Jenkins D Collings/ J du Plessis I van Wijk/ J Calitz N v d Walt A Ungere J Grobelaar M White H Loots M Henderson W Reusch D Vietze L Sampson (coordinator)

Function Provide direction on foamed bitumen treatment RDI Review outputs from RDI process

Output ProjectClientStatus Phase I HVS testingGautrans/ SANRAL Final 1 st level report Mechanical properties of field mix Gautrans/ SANRAL Draft report Phase II HVS testingGautransDraft 1 st level report Mechanical properties of optimised mix GautransDraft report 2 nd level analysis HVS dataGautransIn process Foamed bitumen and emulsion mix design GautransIn process Durability and erodibilityGautransIn process Guidelines Phase IGautransIn process Structural design and Guidelines Phase II SabitaIn process