Journal of the Association of Asphalt Paving Technologists
... one of the most prestigious asphalt paving technologists organization in the world. The Association of Asphalt Paving Technologists (AAPT) is dedicated to the advancement of asphalt paving technology . . If our objectives suit your technical responsibilities, I encourage you to become a member of AAPT.
Prof. Stephen Brown
(then) President, AAPT
Colas Products and Services CD and manual
The CD (which is the electronic version of the manual) is intended to provide a quick source of reference to the roads practitioner. The manual was written by myself, Tom, Gerrie, and Christo, with inputs from the old masters Adrian Bergh and Les Davidson, and colleagues at Colas including (in alphabetical order) Philip Cronje, Trevor Distin, Rob Franks, Errol Kotze, Jeff Newell, Johan O’Connell, John Onraët, and Toby Reeder. The content is based on published materials, internal Colas/Coltech materials, and my own courses at the Universities of Stellenbosch and Witwatersrand, SARF and Sabita. Electronic copies are available from Colas in South Africa. Their website is www.colas.co.za
It is written for the South African industry, and so uses their jargon and bitumen grades, but 99% is applicable internationally. A conversion for bitumen grades is given in Table 3 below. Some are penetration based grading systems and some are viscosity based. Because the viscosity test is fundamental and the penetration test is empirical, there is no direct relationship between them, and the relationship is approximate.
Metric- Imperial conversions
Pavement Management School
The (world's first and longest running) Pavement Management School, offered annually in South Africa. I started the School years back with Gerrie van Zyl, Andre van der Gryp, and Prof Hugo. It still runs under Kim Jenkins and Gerrie, and it covers the latest developments in PMS world wide. Contact Prof Kim Jenkins at Stellenbosch University. They use a hands-on learning experience whereby the candidates learn it in class in the morning, go out and do it on the road in the afternoon, then come back and run it in the PMS system at night. Hard work, great learning, and the wind-up party is tops.
The School includes the following:
- classify a surfaced road network,
- make visual assessments in the field,
- determine appropriate condition indices and determine remaining life,
- extend this to unsealed road networks
- do rehabilitation analysis at the network level,
- develop maintenance and rehabilitation alternatives,
- gain experience regarding the latest methodologies (Expert Systems, Neural Network),
- use HDM4 and other locally developed systems to prioritise and to optimise maintenance programmes
for varying budget levels,
- gain insight into the use of GPS and GIS, as tools of PMS and infrastructure management,
- make presentations at management and politician level.
Shell Bitumen Test Data Chart