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the design parameters in the project specification were met, and due to the high RA content specified both TRH 21 and Sabita Manual 32: Best practice guideline for warm mix asphalt, were used to optimise the binder quantity. As earlier mentioned the base binder selected is a 70/100, modified to conform to the TG1 A-P1 specifications.

Mix Design in South AfricaMix Design in South Africa manuals in Africa!manuals in Africa! BITUMEN STABILISED MATERIALS TG2 : 2nd EDITION Published in South Africa by Asphalt Academy (CSIR / SABITA) May 2009. BSM BSM BINDERSBINDERS EQUAL FOOTING Emulsion Emulsion Foamed BitumenFoamed Bitumen.

2.3 Current State of Bitumen-Rubber Asphalt Mix Design in South Africa Bitumen-rubber asphalt has performed exceptionally well on heavily trafficked roads as is illustrated by the 12 year’s service life at the Buccleuch Interchange on the National Route N3 in South Africa (Potgieter et al, 1998; Potgieter, 2004).

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3.2.1 To verify the asphalt mix design, the aggregates to be used in the mix design, shall be sampled by the contractor per CP 30 and split per CP 32 in the presence of the Engineer. The split aggregates shall be tested by the Contractor and CDOT Central Laboratory Concrete/Physical Properties Unit.

The Asphalt Mix Design Manual for South Africa (2014) (AMDMSA), driven by the Southern African Bitumen Association (Sabita), was compiled with the primary role of advancing the design of asphalt towards a more performance-related specification, which

Manual 28 Best practice for the design and construction of slurry seals Published by Sabita Postnet Suite 56 Private Bag X21 Howard Place 7450 SOUTH AFRICA ISBN 978-1-874968-42-9 Published June 2011 Disclaimer Considerable effort has been made to ensure the accuracy and reliability of the information contained in this publication.

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for their use are available: Manual 14 (SABITA, 1993) and Manual 21 (SABITA, 1999). Foamed bitumen is a newer technology than emulsified bitumen, and has not been as widely used in South Africa. In 2002, the Interim Technical Guideline: “The Design and Use of Foamed Bitumen Treated Materials”

undertaken in Southern Africa (Jones, 1999) and have performed well under the conditions they were designed for. Table 4.1 list some of the generic additive produ cts