Collection of scientific papers "Dorogi i Mosti" (Roads and Bridges)
ISSN 2524-0994 (Print)
ISSN 2786-488X (Online)
EN UA

Impact of additives based on synthetic waxes on the operational and processing characteristics of bitumen

published:
Number: Issues 19-20(2019 )
Section: Construction and civil engineering
DOI: https://doi.org/10.36100/dorogimosti2019.19.107
The page spacing of the article: 107-116
Keywords: asphalt mix, bitumen, synthetic wax additive, heat resistance, process temperatures.
How to quote an article: Ivan Kopinets, Oleksii Sokolov, Oksana Sokolova, Alina Yunak. Impact of additives based on synthetic waxes on the operational and processing characteristics of bitumen // Dorogi і mosti [Roads and bridges]. – 2019. – Iss. 19-20. – P. 107-116. [in Ukrainian].

Authors

State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-5294-5554
State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-0908-4795
State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0003-4202-8661
State Enterprise «State Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-4694-9647

Summary

Introduction. It is established that due to the use of synthetic wax additives, it is possible to reduce the process temperatures of asphalt mix production, as well as to reduce the harmful effects on the environment and fuel consumption on their production.
Problem statement. The work is devoted to the problem of increasing the heat resistance of bitumen and reducing the process temperatures of asphalt mixes production.
Purpose. Determination of the dependence of the content of the additive based on synthetic waxes on the heat resistance of bitumen and its processing properties.
Materials and methods. As the objects of the study of oil paving viscous bitumen of BND 60/90 grade (initial),  modified with 1,0 %, 2,0 % and 3,0 % synthetic wax additives, and equi-penetration bitumen of BND 40/60 grade with the penetration value which is close to the bitumen penetration modified with 3.0 % of synthetic wax additive were taken. To determine the heat resistance of the bitumen, its softening point was determined by the ring and ball method, the equi-penetration softening point and the dynamic viscosity at the softening point was also determined by the ring and ball method. To determine the processing properties of bitumen on the basis of the dependence of the bitumen viscosity on the temperature, the mixing temperatures of bitumen and aggregates during the production of asphalt mixes and the temperature of the beginning of their compaction were determined.
Results. The influence of the additive content on the basis of synthetic waxes on the operational and processing properties of bitumen is investigated. It was established that the additive based on synthetic wax increases the heat resistance of bitumen at the softening point by the ring and ball method and the dynamic viscosity at the softening point by the ring and the ball method. In this case, the equi-penetration temperature of softening is not changed. There is also a decrease in the dynamic viscosity of bitumen at the process temperatures.
Conclusions. Experimental research has proved the possibility of increasing the heat resistance of bitumen by using the additive based on synthetic waxes and the possibility of reducing the process temperatures of production and compaction of asphalt mixes at (25-30 °C) (in comparison with the process temperatures of production and compaction of asphalt mixes on based on the equi-penetration bitumen).

References

1. National standard of Ukraine (DSTU B V.2.7-119:2011) Asphaltic concrete mixtures, road and aerodromes asphaltic concrete specifications. Kyiv, 2012. P. 43. (Information and documentation) [in Ukrainian].
 
2. Radovskyi B. S. Tekhnolohyia novoho teploho asfaltobetona v SShA (New warm asphalt concrete technology in the USA). Dorozhnaia tekhnyka. St. Petersburg, 2008. P. 24-28. URL: https://bitumen.globecore.ru/wp-content/uploads/sites/5/2015/08/tehnologia_tverdogo_asfaltobetona.pdf (Last accessed: 05.03.2019) [in Russian].
 
3. John D'Angelo, Eric Harm, John Bartoszek, etal. Warm-Mix Asphalt: European Practise. Report N: FHWA-PL-08-007. Washington, 2008. 72. p. URL: https://international.fhwa.dot.gov/pubs/pl08007/pl08007.pdf (Last accessed: 05.03.2019) [in English].
 
4. Diana Simnofske, Konrad Mollenhauer. Effect of wax crystallization on complex modulus of modified bitumen after varied temperature conditioning rates. IOP Conf. Series: Materials Science and Engineering. 2017. Vol. 236. DOI:  https://doi.org/10.1088/1757-899X/236/1/012003 [in English].
 
5. Eva Remišová, Michal Holý. Changes of Properties of Bitumen Binders by Additives Application. IOP Conf. Series: Materials Science and Engineering. 2017. Vol. 245. DOI: https://doi.org/10.1088/1757-899X/245/3/032003 [in English].
 
6. Mohsen Aboutalebi Esfahani, Majid Harooni Jamaloei, Mohammad Filvan Torkaman. Rheological and Mechanical Properties of Bitumen Modified with Sasobit, Polyethylene, Paraffin, and Their Mixture. Journal of Materials in Civil Engineering. 2019. Vol. 31. 7. DOI: https://doi.org/10.1061/(ASCE)MT.1943-5533.0002664 [in English]. 
 
7. Solouki, A., Muniandy, R., Hassim, S., Kheradmand, B. Rheological property investigation of various Sasobit-modified bitumen. Petroleum Science and Technology. Vol. 33. 7. P. 773-779. DOI:  https://doi.org/10.1080/10916466.2015.1010040 [in English].
 
8. National standard of Ukraine (DSTU EN 1427:2018 (EN 1427:2015, IDT)) Bitumen and bituminous binders. Determination of softening point by ring and ball method. Kyiv, 2019. 20 p. (Information and documentation) [in Ukrainian].
 
9. National standard of Ukraine (DSTU EN 13302:2019 (EN 13302:2018, IDT)) Bitumen and bituminous binders. Determination of dynamic viscosity of bituminous binder using a rotating spindle apparatus. Kyiv, 2019. (Information and documentation) 23 p. [in Ukrainian].
 
10. STANDARD by ASTM International (ASTM D2493 - D2493M-16) Standard Practice for Viscosity-Temperature Chart for Asphalt Binders. 2016. 5 p. [in English].
 
11. National standard of Ukraine (DSTU 4044-2001) Viscous petroleum road bitumens. Specifications. Kyiv, 2001. 15 p. (Information and documentation) [in Ukrainian].

Archives

Main news

Calendar of events and news

Important information resources