Bitumen, en återvinningsbar produkt
(2015)Programmes in Helesingborg
- Abstract
- Sustainable development is of great importance in today's society. An important aspect of this is the conserving of finite resources. The materials used in the manufacture of asphalt: aggregate and bitumen, are both finite resources. However, the two are highly recyclable. The rock material can be introduced without major issues since it is not significantly affected when an asphalt coating is in use. Bitumen, on the other hand tend to age during use and loses its adhesive power. For this reason, bitumen should be treated before being reintroduced in a new coating mass to insure a good quality. The most common technique for recovering bitumen is the mixing of soft bitumen. This is being done to compensate the brittle state of the aged... (More)
- Sustainable development is of great importance in today's society. An important aspect of this is the conserving of finite resources. The materials used in the manufacture of asphalt: aggregate and bitumen, are both finite resources. However, the two are highly recyclable. The rock material can be introduced without major issues since it is not significantly affected when an asphalt coating is in use. Bitumen, on the other hand tend to age during use and loses its adhesive power. For this reason, bitumen should be treated before being reintroduced in a new coating mass to insure a good quality. The most common technique for recovering bitumen is the mixing of soft bitumen. This is being done to compensate the brittle state of the aged bitumen. However, recently the development and the use of products that restores the aged binders’ properties has begun, this in hope of improving the outcome of the end product. These products are known as rejuvenators, and it is these that this thesis has evaluated and tested. Four different rejuvenators have been chosen, all from different suppliers and countries. All tests have been performed on Peab's laboratory in Gothenburg by a trained and experienced staff. The main interest has been on how the softening point in an aged bitumen is changing and whether the rejuvenator is capable of withstand the heat in an asphalt plant. In addition to these tests low-temperature characteristics, penetration and viscosity has been tested. The results show a clear effect of rejuvenation and with the correct rate of incorporation the rejuvenator can restore an aged bitumen properties to a level that can be assimilated to a new bitumen. Following this there should then be a theoretical possibility of 100 % recovery of asphalt. Both the aggregate and bitumen can be recovered fully. Keywords: Bitumen, Rejuvenation, Recycling, Asphalt, Reuse (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/7764996
- author
- Olsson, Gustav and Aurell, Ola
- organization
- year
- 2015
- type
- M2 - Bachelor Degree
- subject
- keywords
- bitumen, föryngringsmedel, återvinning, asfalt, återanvändning
- language
- Swedish
- id
- 7764996
- date added to LUP
- 2015-08-20 04:16:19
- date last changed
- 2018-10-18 10:32:16
@misc{7764996,
abstract = {{Sustainable development is of great importance in today's society. An important aspect of this is the conserving of finite resources. The materials used in the manufacture of asphalt: aggregate and bitumen, are both finite resources. However, the two are highly recyclable. The rock material can be introduced without major issues since it is not significantly affected when an asphalt coating is in use. Bitumen, on the other hand tend to age during use and loses its adhesive power. For this reason, bitumen should be treated before being reintroduced in a new coating mass to insure a good quality. The most common technique for recovering bitumen is the mixing of soft bitumen. This is being done to compensate the brittle state of the aged bitumen. However, recently the development and the use of products that restores the aged binders’ properties has begun, this in hope of improving the outcome of the end product. These products are known as rejuvenators, and it is these that this thesis has evaluated and tested. Four different rejuvenators have been chosen, all from different suppliers and countries. All tests have been performed on Peab's laboratory in Gothenburg by a trained and experienced staff. The main interest has been on how the softening point in an aged bitumen is changing and whether the rejuvenator is capable of withstand the heat in an asphalt plant. In addition to these tests low-temperature characteristics, penetration and viscosity has been tested. The results show a clear effect of rejuvenation and with the correct rate of incorporation the rejuvenator can restore an aged bitumen properties to a level that can be assimilated to a new bitumen. Following this there should then be a theoretical possibility of 100 % recovery of asphalt. Both the aggregate and bitumen can be recovered fully. Keywords: Bitumen, Rejuvenation, Recycling, Asphalt, Reuse}},
author = {{Olsson, Gustav and Aurell, Ola}},
language = {{swe}},
note = {{Student Paper}},
title = {{Bitumen, en återvinningsbar produkt}},
year = {{2015}},
}