Scholarly record
INTERPRETATION OF LABORATORY TEST RESULTS TO DETERMINE THE BITUMEN DOSAGE FOR ASPHALT CONCRETES
Abstract
The determination of bitumen dosages for asphalt mixtures using empirical or semi-empirical methods (the specific surface method being the most well-known) no longer meets national or international technical standards. Most countries require the use of methods for determining the optimum binder content by laboratory tests grouped, usually, on several levels according to the Marshall or Superpave mix design. Romanian technical standards in this field are European and national standards, which unequivocally impose well established limits for each constituent and each characteristic of the prepared asphalt mixture, the mix design method approached being the Marshall one. These Romanian standards have been adopted in the last years and the results obtained in specialized laboratories contradict, in many cases, the values imposed by the current technical standards. The paper presents a series of laboratory tests performed to determine the optimum bitumen content for the production of an asphalt concrete for the wearing course. The tests highlight the fact that, regardless of the grading, it is difficult to achieve all the required physical and mechanical characteristics, starting from rangimg the bitumen content within the limits imposed by the Romanian technical standards. The mentioned laboratory tests are part of a broader research to be carried out in the next period of time and the authors wish to collaborate with other specialists for a possible revision of the Romanian standards requirements in this field.
Publication Impact Profile
Publication details
References6
BELC A.L., COSTESCU C., BELC F., Considerations concerning the determination and interpretation of Marshall flow values in asphalt concretes, 18th International Multidisciplinary Scientific GeoConference SGEM 2018, Bulgaria.
MIREA M., CIOPEC A., The Stability Verification of the Retaining Structure of an Unstable Slope, 16th International Multidisciplinary Scientific Geoconference SGEM 2016, Bulgaria, vol. I, p. 1037-1043, 2016.
NIKOLAIDES A., Highway engineering: pavements, materials and control of quality, U.S.A., 2015.
RAYMOND S. et. al., Les enrobés bitumineux, France, "Revue générale des routes et des aérodromes", tome 1, 2001.
RĂCĂNEL C., BURLACU A., Ecological Asphalt Mixtures With Blast Furnace Slag, 16th International Multidisciplinary Scientific Geoconference SGEM 2016, Bulgaria, vol. II, p. 33-40, 2016.
* * * Normativ privind mixturile asfaltice la cald. Condiții tehnice de proiectare, preparare și punere în operă a mixturilor asfaltice. (Standard concerning warm mixes. Technical conditions for the designing, preparing and laying asphalt mixtures) Indicative AND 605-2017, Romania, 2017.
Citing literature
Number of times cited according to Crossref: 1
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
