Preliminary Study on Using LDPE, LLDPE and PP Waste as Concrete Aggregates

Abstract:

Over the years, plastic production has increased in direct proportion to the amount of plastic waste generated globally. Single-use plastics such as low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and polypropylene (PP) have increased significantly. Therefore, they can be used as aggregates in the production of concrete to reduce the generation of plastic waste in the environment. LDPE, LLDPE and PP were the plastic types used, with 25% and 50% of plastic aggregate replacing sand. The tests included Fourier-transform infrared spectroscopy (FTIR) analysis of the plastic granulate, density, and compression tests of the concrete specimens. The type of granulate used follows the type of plastic tested from the results of the FTIR characterization. It was found that the compressive strength of concrete containing 25% of plastic aggregates was higher than that of concrete containing 50% of plastic aggregates. The compressive strength of the LLDPE concrete specimens is 31.4 MPa, whereas the compressive strength of the LDPE concrete specimens is only 26.3 MPa and that of the PP concrete specimens is 30.4 MPa. Further research will be carried out to determine the optimum strength of concrete with plastic aggregates.

• Periodical: Key Engineering Materials (Volume 1026)
• Pages: 115-123
• DOI: https://doi.org/10.4028/p-3BnK4o
• Online since: October 2025
• Authors: Riska Rachmantyo*, Richard Adventus Hutasoit, Lia Amelia Tresna Wulan Asri
• Keywords: Aggregates, Concrete, Plastic Waste

References

[1] United Nations Environment Programme, Single-use plastics, a roadmap for sustainability., n.d.

[2] T.R. Walker, L. Fequet, Current trends of unsustainable plastic production and micro(nano)plastic pollution, TrAC - Trends in Analytical Chemistry 160 (2023).

DOI: 10.1016/j.trac.2023.116984

[3] I. Almeshal, B.A. Tayeh, R. Alyousef, H. Alabduljabbar, A. Mustafa Mohamed, A. Alaskar, Use of recycled plastic as fine aggregate in cementitious composites: A review, Constr. Build Mater. 253 (2020).

DOI: 10.1016/j.conbuildmat.2020.119146

[4] M. Shams, I. Alam, M.S. Mahbub, Plastic Pollution During COVID-19: Plastic Waste Directives and Its Long-term Impact on The Environment, Environmental Advances 5 (2021).

DOI: 10.1016/j.envadv.2021.100119

[5] N. Parashar, S. Hait, Plastics in the time of COVID-19 pandemic: Protector or polluter?, Science of the Total Environment 759 (2021).

DOI: 10.1016/j.scitotenv.2020.144274

[6] N.U. Benson, D.E. Bassey, T. Palanisami, COVID pollution: impact of COVID-19 pandemic on global plastic waste footprint, Heliyon 7 (2021).

DOI: 10.1016/j.heliyon.2021.e06343

[7] Y. Liang, Q. Tan, Q. Song, J. Li, An analysis of the plastic waste trade and management in Asia, Waste Management 119 (2021) 242–253.

DOI: 10.1016/j.wasman.2020.09.049

[8] Kementerian Lingkungan Hidup dan Kehutanan Republik Indonesia, Capaian Kinerja Pengelolaan Sampah, Https://Sipsn.Menlhk.Go.Id/Sipsn/Public/Data/Capaian (n.d.).

[9] M. Belmokaddem, A. Mahi, Y. Senhadji, B.Y. Pekmezci, Mechanical and physical properties and morphology of concrete containing plastic waste as aggregate, Constr Build Mater 257 (2020).

DOI: 10.1016/j.conbuildmat.2020.119559

[10] A. Milbrandt, K. Coney, A. Badgett, G.T. Beckham, Quantification and evaluation of plastic waste in the United States, Resour Conserv Recycl 183 (2022).

DOI: 10.1016/j.resconrec.2022.106363

[11] X. Li, T.C. Ling, K. Hung Mo, Functions and impacts of plastic/rubber wastes as eco-friendly aggregate in concrete – A review, Constr Build Mater 240 (2020).

DOI: 10.1016/j.conbuildmat.2019.117869

[12] M. Anshassi, S.J. Laux, T.G. Townsend, Approaches to integrate sustainable materials management into waste management planning and policy, Resour Conserv Recycl 148 (2019) 55–66.

DOI: 10.1016/j.resconrec.2019.04.011

[13] E. del Rey Castillo, N. Almesfer, O. Saggi, J.M. Ingham, Light-weight concrete with artificial aggregate manufactured from plastic waste, Constr Build Mater 265 (2020).

DOI: 10.1016/j.conbuildmat.2020.120199

[14] A.A. Mohammed, I.I. Mohammed, S.A. Mohammed, Some properties of concrete with plastic aggregate derived from shredded PVC sheets, Constr Build Mater 201 (2019) 232–245.

DOI: 10.1016/j.conbuildmat.2018.12.145

[15] F.A. Spósito, R.T. Higuti, M.M. Tashima, J.L. Akasaki, J.L.P. Melges, C.C. Assunção, M. Bortoletto, R.G. Silva, C.F. Fioriti, Incorporation of PET wastes in rendering mortars based on Portland cement/hydrated lime, Journal of Building Engineering 32 (2020).

DOI: 10.1016/j.jobe.2020.101506

[16] H. Rajandas, S. Parimannan, K. Sathasivam, M. Ravichandran, L. Su Yin, A novel FTIR-ATR spectroscopy based technique for the estimation of low-density polyethylene biodegradation, Polym. Test. 31 (2012) 1094–1099.

DOI: 10.1016/j.polymertesting.2012.07.015

[17] J. V Gulmine, P.R. Janissek, H.M. Heise, L. Akcelrud, Test method Polyethylene characterization by FTIR, Polym. Test. 21 (2002) 557–563.

DOI: 10.1016/s0142-9418(01)00124-6

[18] V. Morgado, L. Gomes, R.J.N. Bettencourt da Silva, C. Palma, Validated spreadsheet for the identification of PE, PET, PP and PS microplastics by micro-ATR-FTIR spectra with known uncertainty, Talanta 234 (2021).

DOI: 10.1016/j.talanta.2021.122624

[19] M.J. Islam, M. Shahjalal, Effect of polypropylene plastic on concrete properties as a partial replacement of stone and brick aggregate, Case Studies in Construction Materials 15 (2021).

DOI: 10.1016/j.cscm.2021.e00627