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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1865

Title: Best practice: bitumen-emulsion and foamed bitumen materials laboratory processing
Authors: Kekwick, SV
Keywords: Bitumen-emulsion
Anionic emulsion
Unconfined compression test
UCS
Indirect tensile strength
ITS
Issue Date: Jul-2005
Citation: Kekwick, SV. 2005. Best practice: bitumen-emulsion and foamed bitumen materials laboratory processing. SATC 2005: The 24th Annual Southern African Transport Conference and Exhibition, Pretoria, South Africa, 11-13 July, 2005, pp. 1-18
Abstract: Although accelerated laboratory curing of bitumen-emulsion and foamed bitumen treated materials is undertaken widely, there is not an accepted standard procedure. A major contributing factor to this situation is undoubtedly the complex composition of these materials, which can include both active and inactive fillers such as lime, cement, fly ash, etc., as well as the bituminous binder and parent material. The complexities of the various chemical reactions and interactions that will occur during the treatment process are poorly understood at best. While an accelerated curing regime should not alter these fundamental processes from those that would occur in field conditions, given the variations in composition of these treated materials in terms of specific composition and quantities, there is concern that the influence of accelerated curing is not fully understood. Consequently there is a significant possibility that laboratory cured specimens have strength or other characteristics that are dissimilar to the field materials that they supposedly represent. This paper, based on a review of past practice and fundamental behaviour, identifies what are regarded as most appropriate laboratory procedures for these types of treated materials to ensure that laboratory testing should reliably characterise field properties
URI: http://hdl.handle.net/10204/1865
Appears in Collections:General science, engineering & technology

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