Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 21 Issue 6

Figure 2: Sieve analysis curve of plastic PET coarse aggregate Grain Size Distribution Curve Results: % Gravel: 50.0 D 10 : 6.20 C u : 3.15 % Sand: 30 D 30 : 10.4 C c: 0.89 % Fines: 20 D 60 : 19.5 Table 2: Physical Properties of Constituent Materials Materials Specific Gravity Aggregate Impact Value (%) Aggregate Crushing Value (%) Water Absorption (%) Density (g/cm 3 ) Maximum Aggregate Size (mm) Coefficient of Gradation (Cc) Coarse Aggregate 2.65 18.5 45.76 0.7 - 25 1.17 Sand 2.43 - 2.2 1.81 4.75 1.63 Plastic PET Aggregate 1.53 5.1 10.08 0 1.02 25 0.89 a) Effect of plastic waste aggregate on concrete slump value The result for the slump test is presented in Figure 3. From the results, the workability of concrete with partial addition of plastic PET aggregate increases as the percentage of plastic PET aggregate increases. This can be explained to be as a result of the hydrophobic property of the plastic PET aggregates because it repels mix water to provide excess water in the concrete. The availability of excess water increases the flowability of the concrete matrix. 0 10 20 30 40 50 60 70 80 90 100 3.000 30.000 % Passing Particle Diameter (mm) #4 #10 #40 #200 GRAVEL Coarse SAND Medium SAND Fine SAND SILT/CLAY Experimental Study on Effect of Plastic Waste as Coarse Aggregate on Concrete Properties 1 Global Journal of Science Frontier Research Volume XXI Issue VI Year 2021 47 ( H ) © 2021 Global Journals Version I