An Experimental Analysis for Impact Behavior of Portland Cement Concrete Substituted with Reclaimed Asphalt Pavement Aggregate

• Published in: Iranian journal of science and technology. Transactions of civil engineering Vol. 47; no. 4; pp. 2113 - 2130
• Main Authors: Sahan, Mehmet Fatih, Unsal, Ismail
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-08-2023; Springer Nature B.V
• Subjects: Aggregates; Asphalt; Asphalt pavements; Bituminous cements; Cement; Civil Engineering; Concrete; Concrete aggregates; Concrete mixes; Drop tests; Dynamic tests; Energy absorption; Energy dissipation; Energy value; Engineering; Impact analysis; Load history; Portland cement; Portland cements; Research Paper; Substitutes; Sustainable materials; Instrumented drop weight; Impact behavior; Reclaimed asphalt pavement (RAP); Portland cement concrete; Recycle
• ISSN: 2228-6160; 2364-1843
• DOI: 10.1007/s40996-023-01052-7

Reclaimed asphalt pavement (RAP) aggregates, sustainable material, attract growing interest globally, where we have confronted several resource scarcities due to environmental challenges. The subject of this study, which is the first in the literature, is the impact behavior of Portland cement concrete mixtures containing substituted RAP aggregates. Percentages of 0, 5, 10, 15 and 20% by volume of the general mix were considered as a substitute for natural fine aggregate. Concrete samples were exposed to three different temperature levels (25 °C, 50 °C and 75 °C). The effect of RAP incorporation on the impact behavior of Portland cement concrete was investigated using load history and energy dissipation graphics obtained from instrumented drop-weight test setup. As a result of the dynamic tests, an optimum replacement ratio of 10% was obtained for better energy absorption for cube samples. The energy values of RAP-Concrete decreased with increasing temperature, similar to the control samples. The maximum dissipated energy was obtained for the control concretes for the beam samples. The energy value of beam samples considerably decreased with increasing RAP percentage in the concrete mixes. The study revealed that RAP substitution in specific proportions could improve the impact behavior of Portland cement concrete where low strength and high shock-absorbing properties are desired.