Author:Mokoena, Refiloe; Mturi, Georges AJ; Maritz, Johan; Malherbe, Johan; O'Connell, Johannes SDate:Oct 2019Performance grade specifications for bituminous binders focus on the evaluation of bitumen properties based on the loading and environmental conditions under which the material will be subjected to in the field. The temperature of the asphalt ...Read more
Author:Walubita, LF; Fuentes, L; Prakoso, A; Pianeta, LM; Komba, Julius J; Naik, BDate:Mar 2020Rutting 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
Author:Mturi, George AJ; Nkgapele, M; O'Connell, Johannes SDate:May 2012The increase in traffic loads and loading time in road pavements worldwide has resulted in the widespread usage of polymer modified binders (PMBs) since they offer increased resistance to pavement distresses. The extensive use of inherently ...Read more
Author:Anochie-Boateng, Joseph; Komba, Julius J; Ventura, D; Verhaeghe, Benoit MJADate:Sep 2011This 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
Author:Theyse, HL; De Beer, Morris; Maina, JW; Kannemeyer, LDate:Sep 2011Pavement design methods, in combination with network level management systems must enable road authorities to develop reliable long-term financial plans based on the estimated structural capacity of the road network. Inaccurate design models ...Read more
Author:De Beer, Morris; Van Rensburg, YvetteDate:16 Aug 2015Recently, analyses on Stress-in-Motion (SIM) data of heavy vehicles (HVs) from National Road 3 (N3) indicated that there are un-equal loading on dual tyre configurations. It was shown that the mass of approximately 70 percent of the outside ...Read more
Author:De Beer, Morris; Van Rensburg, YvetteDate:Aug 2015Recently, analyses on Stress-in-Motion (SIM) data of heavy vehicles (HVs) from National Road 3 (N3) indicated that there are un-equal loading on dual tyre configurations. It was shown that the mass of approximately 70 percent of the outside ...Read more
Author:Anochie-Boateng, Joseph; Tutumluer, E; Apeagyei, A; Ochieng, GDate:Aug 2010Resilient modulus (MR) test and the California Bearing Ratio (CBR) test have been the two most common tests for laboratory characterization of geomaterials, i.e., fine-grained subgrade soils and unbound aggregate materials for road and airfield ...Read more