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- W619357159 abstract "The use of modified binders is gaining in popularity as a perceived means of meeting the challenges of ever-increasing traffic loading. The modified binder specifications currently utilised in South Africa are the result of a consensus process undertaken more than 6 years ago. In general they bear little or no relation to specific in-service performance properties and as such, associated risks are difficult to manage. In some instances, international or locally developed proprietary products, which have been assessed and certified by appropriate Standards Authorities, and supported by acceptable performance guarantees, have been utilised on major rehabilitation/maintenance projects. This approach would appear to be the most logical route to follow; however, SANRA, together with other state road authorities, is committed to the principles of affirmative business practice. To this end the current objective is to look at, and be part of, good practice, leading to the development of appropriate specifications for modified binders relative to specific applications as well as generic classes. The development of such standards should contribute to an unrestricted, fair and transparent procedure for the procurement of cost effective and fit for purpose modified binder products. The paper covers an assessment of an investigation commissioned by Sabita, which reviewed both international practice and local practice in relation to performance based specifications. This assessment will guide the process of reformulation of the current specification to meet the requirements set out above. (a) For the covering entry of this conference, please see ITRD abstract no. E202467." @default.
- W619357159 created "2016-06-24" @default.
- W619357159 creator A5010377387 @default.
- W619357159 date "2000-01-01" @default.
- W619357159 modified "2023-09-27" @default.
- W619357159 title "A SOUTH AFRICAN PROCUREMENT POLICY FOR MODIFIED BINDERS" @default.
- W619357159 hasPublicationYear "2000" @default.
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