A contractor's perspective on bitumen rubber asphalt manufacture and placement
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Date
Authors
Marais, Herman I.J.
Journal Title
Journal ISSN
Volume Title
Publisher
Document Transformation Technologies
Abstract
Paper presented at the 30th Annual Southern African Transport Conference 11-14 July 2011 "Africa on the Move", CSIR International Convention Centre, Pretoria, South Africa.
Bitumen Rubber Asphalt (BRA) has been used in South Africa since the early 1980's with varying degrees of success. There are projects which have perfomed exceptionally well and have exceeded their design life, with one specific example of a BRA surfacing which is still performing well after 25 years. There are also BRA projects that have had their fair share of problems with some recent projects having up to 20% of their asphalt placed failing prematurely. This paper will cover the BRA experiences of contractors over the past 10 years in South Africa, highlighting challenges experienced as well as measures taken to limit risks of premature failure.
Bitumen Rubber Asphalt (BRA) has been used in South Africa since the early 1980's with varying degrees of success. There are projects which have perfomed exceptionally well and have exceeded their design life, with one specific example of a BRA surfacing which is still performing well after 25 years. There are also BRA projects that have had their fair share of problems with some recent projects having up to 20% of their asphalt placed failing prematurely. This paper will cover the BRA experiences of contractors over the past 10 years in South Africa, highlighting challenges experienced as well as measures taken to limit risks of premature failure.
Description
This paper was transferred from the original CD ROM created for this conference. The material was published using Adobe Acrobat 10.1.0 Technology.
The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: nigel@doctech URL: http://www.doctech.co.za
Keywords
Bitumen Rubber Asphalt, Premature failure
Sustainable Development Goals
Citation
Marais, HIJ 2011, 'A contractor's perspective on bitumen rubber asphalt manufacture and placement', Paper presented to the 30th Annual Southern African Transport Conference, South Africa, 11-14 July. pp 486-596