Development of Recycled-Modified Asphalt Using Basalt Aggregate

With the strengthened regulation on the mandatory use
of recycled aggregate, development of construction materials using
recycled aggregate has recently increased. This study aimed to secure
the performance of asphalt concrete mixture by developing
recycled-modified asphalt using recycled basalt aggregate from the
Jeju area. The strength of the basalt aggregate from the Jeju area used
in this study was similar to that of general aggregate, while the specific
surface area was larger due to the development of pores. Modified
asphalt was developed using a general aggregate-recycled aggregate
ratio of 7:3, and the results indicated that the Marshall stability
increased by 27% compared to that of asphalt concrete mixture using
only general aggregate, and the flow values showed similar levels.
Also, the indirect tensile strength increased by 79%, and the toughness
increased by more than 100%. In addition, the TSR for examining
moisture resistance was 0.95 indicating that the reduction in the
indirect tensile strength due to moisture was very low (5% level), and
the developed recycled-modified asphalt could satisfy all the quality
standards of asphalt concrete mixture.

• Dong Wook Lee
• Seung Hyun Kim
• Jeongho Oh

• Asphalt Concrete Mixture
• Performance Grade
• Recycled Basalt Aggregate
• Recycled-Modified Asphalt.

[1] Ministry of Environment, Status of national wastes generation and
disposal (2013). Report, Korea, 2014
[2] S. D. Hwang, and S. H. Ahn, Characteristics of high-temperature
behavior of asphalt mixtures by aggregate types, Technical Notes, Korean
Society of Pavement Engineers, Vol.2, No.4, pp.50-56, 2000.
[3] M. H. Jang, and H. B. Choi, “Quality Evaluation of Basalt Aggregates
from JEJU Island”, J. of the Korea Institute of Building Construction,
Vol.13, No.5, pp.449-456, May 2013.
[4] R. W. Le Maitre, “A proposal by the IUGS subcommission on the
systematics of igneous rocks for a chemical classification of volcanic
rocks based on the total alkali silica (TAS) diagram”, Australian J. of
Earth Sci., Vol.31, pp.243-255, 1984.
[5] J. M. Nam, J. M. Yun, Y. S. Song, and J. H. Kim, “Analysis of
Engineering Properties to Basalt in Cheju island”, J. Korean
Geosynthetics Society, Vol.7, No.1, pp.13-21, Mac. 2008.
[6] K. T. Moon, S. Y. Park, Y. C. Kim, and S. B. Yang, “Mechanical
Characteristics of Basalt in Jeju Island with Relation to Porosity”, J. of the
Korean Society of Civil Engineers, Vol.34, No.4, pp.1215-1225, Aug.
2014.
[7] N. H. Kim, J. C. Kim, J. P. Hong, and K. W. Kim, “Evaluation of
Fundamental Properties of Warm-mix Recycled Asphalt Concretes”, J. of
the Korean Society Road Engineers, Vol.12, No.4, pp.111-120, Dec.
2010.
[8] J. W. Lee, M. S. Lee, Y. J. Kim, D. W. Cho, and S. A. Kwon, “Evaluation
of Warm-Recycled Asphalt Mixtures using Polyethylene Wax-Based
Additive”, Inter. J. Highway Engineers, Vol.15, No.4, pp.43-51, Aug.
2013.