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Browsing by Subject "Hot mix asphalt"

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Aggregate packing characteristics of good and poor performing asphalt mixes

Author: Denneman, E ; Verhaeghe, Benoit MJA ; Sadzik, ES Date: Jul 2007 The aggregate structure of the compacted mix is a determining factor for the performance of Hot-Mix Asphalt (HMA). In this paper, the grading characteristics of good and poor performing HMA mixes are explored using the concepts of the Bailey ... Read more
Application of locally developed pavement temperature prediction algorithms in performance grade (PG) binder selection

Author: Denneman, E Date: Jul 2007 In this paper, locally developed algorithms for asphalt pavement temperature prediction are validated against new field data. The algorithms provide accepable estimates of the actual pavement temperatures at the monitored sites. The algorithms ... Read more
Appropriate models for estimating stresses and strains in asphalt layers

Author: Jooste, FJ ; Lourens, JP Date: Sep 1998 The broad objective is to make recommendations for appropriate modelling procedures to be used in the structural design of asphalt layers. Findings of this investigation are intended to be used in refining and validating existing asphalt ... Read more
Asphalt rutting and its prevention

Author: Verhaeghe, Benoit MJA ; Myburgh, PA ; Denneman, E Date: Sep 2007 The paper seeks to redress the concerns expressed at the eight Conference on Asphalt pavements for Southern Africa (CAPSA) that the design of hot-mix asphalt did not adequately address prevention of rutting. It presents a consolidation of ... Read more
Correlating the HWTT laboratory test data to field rutting performance of in-service highway sections

Author: Walubita, LF ; Fuentes, L ; Prakoso, A ; Pianeta, LM ; Komba, Julius J ; Naik, B Date: Mar 2020 Rutting is one of the common distresses occurring in hot-mix asphalt (HMA) pavements that can be mitigated through adequate laboratory testing during the HMA mix-design screening stage. The Hamburg Wheel Tracking Tester (HWTT) is one of the ... Read more
Correlation of extensional bitumen properties with 4-point bending beam asphalt mixture fatigue life

Author: Maluke, N ; Mturi, George AJ ; Hesp, SAM Date: Oct 2018 In South Africa, over the last two decades, there has been a need to improve on the ductility specification test and to better simulate ageing of the asphalt bitumen in the laboratory for the control of fatigue cracking distress. Focusing on ... Read more
Effect of sample geometry on bulk relative density of hot-mix asphalt mixes

Author: Anochie-Boateng, Joseph ; Komba, Julius J ; Ventura, D ; Verhaeghe, Benoit MJA Date: Sep 2011 This study emanated from the revision of South African mechanistic-empirical pavement design method. At the CSIR road pavement laboratory, the bulk relative density (BRD) of compacted hot-mix asphalt (HMA) mixes is determined on cores and ... Read more
Evaluation of deformation response of HMA under APT and wheel tracking tests

Author: Denneman, E ; Steyn, WJVDM ; Maina, JW ; Sadzik, ES Date: Oct 2008 This paper is based on a study into the rutting performance of HMA which forms part of the larger research initiative. The objective of this phase is to identify and develop appropriate test protocols and associated acceptance criteria for ... Read more
The use of plastic waste in road construction

Author: Mturi, George AJ ; O’Connell, Johan S ; Akhalwaya, Imraan ; Ojijo, Vincent O ; Mofokeng, Tladi G ; Ncolosi, Nonzwakazi ; Smit, Michelle A Date: Dec 2021 Recycled plastics are being investigated worldwide not only as a green investment, but also for improved pavement durability (Milad et al., 2020). The objectives of the study were to screen, evaluate and implement existing international ... Read more

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Browsing by Subject "Hot mix asphalt"

Browsing by Subject "Hot mix asphalt"

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