Makhari, AHawes, Nomashaka BNMturi, George AJOjijo, Vincent O2021-08-092021-08-092021-07Makhari, A., Hawes, N.B., Mturi, G.A. & Ojijo, V.O. 2021. Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry. http://hdl.handle.net/10204/12079 .http://hdl.handle.net/10204/12079Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used in South Africa include plastomers (e.g. ethylene vinyl acetate or EVA), elastomers (e.g. styrene-butadiene-styrene or SBS) and warm mix additives (e.g. waxes). Bitumens are already complex materials which can be represented mechanically and rheologically with mathematical models. Recently, the need to also characterise the in situ structural and chemistry effect of modifiers within bitumen has been appreciated, in order to determine their influence on modified bitumen performance. This paper explores the analysis of bitumen with various modifiers using Fourier Transform Infra-Red (FTIR) spectroscopy and Differential Scanning Calorimetry (DSC). Special attention is paid to quantification of these modifiers in bitumen as a quality control and forensic investigative tool, due to the current asphalt failure challenges facing the industry. The aim is to accurately determine the extent of modification through analytical techniques as a monitoring tool for the better construction of asphalt pavement roads. The paper shows such analytical scientific techniques have the potential to quantify locally used modifiers in South African bitumen.FulltextenModified bitumenModifier quantificationFourier Transform Infra-RedFTIRSpectroscopyDifferential scanning calorimetryDSCConference PresentationMakhari, A., Hawes, N. B., Mturi, G. A., & Ojijo, V. O. (2021). Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry. http://hdl.handle.net/10204/12079Makhari, A, Nomashaka BN Hawes, George AJ Mturi, and Vincent O Ojijo. "Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry." <i>Southern Africa Transport Conference, Pretoria, South Africa, 5-7 July 2021</i> (2021): http://hdl.handle.net/10204/12079Makhari A, Hawes NB, Mturi GA, Ojijo VO, Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry; 2021. http://hdl.handle.net/10204/12079 .TY - Conference Presentation AU - Makhari, A AU - Hawes, Nomashaka BN AU - Mturi, George AJ AU - Ojijo, Vincent O AB - Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used in South Africa include plastomers (e.g. ethylene vinyl acetate or EVA), elastomers (e.g. styrene-butadiene-styrene or SBS) and warm mix additives (e.g. waxes). Bitumens are already complex materials which can be represented mechanically and rheologically with mathematical models. Recently, the need to also characterise the in situ structural and chemistry effect of modifiers within bitumen has been appreciated, in order to determine their influence on modified bitumen performance. This paper explores the analysis of bitumen with various modifiers using Fourier Transform Infra-Red (FTIR) spectroscopy and Differential Scanning Calorimetry (DSC). Special attention is paid to quantification of these modifiers in bitumen as a quality control and forensic investigative tool, due to the current asphalt failure challenges facing the industry. The aim is to accurately determine the extent of modification through analytical techniques as a monitoring tool for the better construction of asphalt pavement roads. The paper shows such analytical scientific techniques have the potential to quantify locally used modifiers in South African bitumen. DA - 2021-07 DB - ResearchSpace DP - CSIR J1 - Southern Africa Transport Conference, Pretoria, South Africa, 5-7 July 2021 KW - Modified bitumen KW - Modifier quantification KW - Fourier Transform Infra-Red KW - FTIR KW - Spectroscopy KW - Differential scanning calorimetry KW - DSC LK - https://researchspace.csir.co.za PY - 2021 T1 - Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry TI - Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry UR - http://hdl.handle.net/10204/12079 ER -24818