Mechanical Properties of Normal Concrete for Local Road Using Plastic Waste Substitution as Course Aggregate
Tri Mulyono (a*), Arief Saefudin (b), Adhi Purnomo (b), Irika Widiasanti (b)

a) Transportation Departement, Faculty of Engineering, State University of Jakarta, Jalan Rawamangun Muka, Jakarta 13220, Indonesia
b) Faculty of Engineering, State University of Jakarta, Jalan Rawamangun Muka, Jakarta 13220, Indonesia
* trimulyono[at]unj.ac.id

Abstract

Plastic waste can decrease the carrying capacity of the environment, only about 4% can be recycled. Through research, it is expected to be one of the solutions to the use of plastic waste to reduce environmental impacts. The use of substitution of plastic waste as coarse aggregate in the weight-volume mixture with proportion of 2%, 4%, 6%, 8% and 10% in normal concrete used for local roads and determining the mechanical properties are the aims of this research. The results showed that the compressive strength for reference concrete was 21.268 MPa greater than designed (fc = 19.3 MPa) and with a mixture of plastic waste respectively 13.298 MPa, 14.430 MPa, 11.506 MPa, 6.602 MPa, 6.602 MPa 6.602 MPa and 5.753 MPa. The tensile strength of the reference concrete is 2.853 MPa, and compared with substitution of 1.981 MPa, 2.216 MPa, 1.863 MPa, 1.155 MPa and 1.179 MPa. The flexural strength test below and do not meet the criteria for the local roads (3 MPa). Plastic waste up to 10% substitution shows the lowest decrease with 4% plastic waste resulting in 19.5% decrease in flexural strength compared to reference concrete and every 2% increase plastic was 10-20% flexural strength decreases.

Keywords: Plastic Waste, Mechanical Properties, Local Road

Topic: Civil Engineering