Abstract
Attempts have been made to address the strict regulations on eco-friendly construction and recycle aggregate resources, encouraging researchers to consider the utilization of recycled aggregates for the backfilling of underground power systems. It is essential to recognize the physical and thermal characteristics of domestic recycled aggregates for use as backfill materials for underground power conduits in Korea. Herein, the thermal properties of concrete-based recycled aggregates with different grain-size distributions are evaluated, and the particle breakage effect of recycled aggregates is identified through the compaction tests. The thermal properties of the recycled aggregates and the river sand were measured using a transient hot wire method after a standard compaction test. The particle breakage effect was also investigated during the standard compaction test. The thermal resistivities of the recycled aggregates and the river sand showed a similar trend, which were decreased with an increase in the water content at the same dry unit weight. In addition, particle breakage during compaction led to an enhanced compaction effect, reducing the thermal resistivity and increasing the fine particle content. This study shows that the recycled aggregates can be promising backfill materials that substitute natural aggregates when backfilling underground power conduits.
Similar content being viewed by others
References
Lee Y, Kwan YW, Hyun J-H (2005) The engineering and environmental properties of reclaimed concrete materials as road materials. J Kor Geo-Environ Soc 6(3):17–23
Kim S, Lee D, Lee J, You SK, Choi H (2012) Application of recycled aggregate porous concrete pile (RAPP) to improve soft ground. J Mater Cycles Waste Manag 14:360–370
Liu F, Yu Y-Y, Li L-J, Zeng L (2018) Experimental study on reuse of recycled concrete aggregates for load-bearing components of building structures. J Mater Cycles Waste Manag 20:995–1005
Jun M-H, Lee S-H, Lee S-B, Lee D-H (2004) A study on quality investigation of domestic recycled aggregates. J Archit Inst Kor 24(1):203–206
Wang W, Liu Y, Jiang L, Zhao L, Li Z (2018) Effect of physical properties of recycled coarse aggregate on the mechanical properties of recycled aggregate thermal insulation concrete (RATIC). Constr Build Mater 180:229–238
Deng Z, Liu B, Ye B, Xiang P (2020) Mechanical behavior and constitutive relationship of the three types of recycled coarse aggregate concrete based on standard classification. J Mater Cycles Waste Manag 22:30–45
Oh KD, Kim DH, Kim KY (2008) Characteristics of thermal resistivity of recycled aggregate on water content. Proc 2008 KSCE Conf. 3883–3886
Wi J, Hong S-Y, Lee D-S, Han E, Choi H (2010) Laboratory experiment to characterize thermal properties of recycled-aggregate backfill. Proc 2010 KGS Fall Conf. 1231–1238
Wi J, Hong S-Y, Lee D-S, Park S, Choi H (2011) Evaluation of compaction and thermal characteristics of recycled aggregates for backfilling power transmission pipeline. J Kor Geotech Soc 27(7):17–33
Zhu L, Dai J, Bai G, Zhang F (2015) Study on thermal properties of recycled aggregate concrete and recycled concrete blocks. Constr Build Mater 94:620–628
Bravo M, Brito JD, Evangelista L (2017) Thermal performance of concrete with recycled aggregates from CDW plants. Appl Sci 7(7):740
Lade PV, Yamamuro JA, Bopp PA (1996) Significance of particle crushing in granular materials. J Geotech Eng ASCE 122(4):309–316
Son YH, Chang PW (2009) Breakage index of weathered soil reflecting breakage level and weathering degree. KSCE J Civ Eng 13(5):325–332
Carslaw HS, Jaeger JC (1947) Conduction of heat in solids, 2nd edn. Oxford University Press, Oxford
Lee PY, Suedkamp RJ (1972) Characteristics of irregularly shaped compaction curves of soils. Highway research Record No. 381. National Academy of Sciences, Washington
Acknowledgements
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2019R1A2C2086647) and by the Korea government (MOE) (2020R1A6A1A03045059).
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Kim, D., Kwon, K., Kim, G. et al. Evaluation of Korean recycled aggregates as backfilling underground power system considering particle breakage effect. J Mater Cycles Waste Manag 23, 1665–1677 (2021). https://doi.org/10.1007/s10163-021-01218-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10163-021-01218-3