Enhancing Concrete Sustainability by Using Recycled Concrete Aggregate (RCA) to Produce New Jersey Barriers | ||
| Journal of Engineering Science and Military Technologies | ||
| Articles in Press, Accepted Manuscript, Available Online from 01 October 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejmtc.2025.393226.1320 | ||
| Authors | ||
| Amr Elfar* 1; Essam El-Tehawy2; Hassan Hassan3 | ||
| 1Department of Construction and Building Engineering Department, College of Engineering and Technology, Arab Academy for Science, Technology and Maritime Transport (AASTMT), Cairo, Egypt. | ||
| 2Professor of Construction Materials, Construction and Building Department, College of Engineering, Arab Academy for Science and Technology, Cairo, Egypt. | ||
| 3Assistant Professor, Construction and Building Department, College of Engineering, Arab Academy for Science and Technology, Cairo, Egypt. | ||
| Abstract | ||
| As construction and demolition waste (CDW) grows, sustainable ideas are integrated within the global construction industry. This study approaches the usage of recycled concrete aggregate (RCA) and its application in New Jersey barriers. Eight concrete mixes were prepared and tested chemically, physically, and mechanically. The mixes used two varying types of cement (CEM I 42.5N and CEM II A/P 42.5N), four types of coarse aggregates (10mm, 20mm natural and recycled aggregate), and two types of fine aggregate (natural and recycled). The results showed more promising potential for the CEM I mixes than the CEM II mixes. At a cement content of 350 kg/m3, the results showed that the two kinds of cement could be used with RCA to produce New Jersey barriers with a compressive strength of 250 kg/cm2. Thus, the paper concluded the importance of further explorations of varying usages of RCA as a raw material within concrete mixes | ||
| Keywords | ||
| Construction and Demolition Waste (CDW); Recycled Concrete Aggregate (RCA); Natural Concrete Aggregate (NCA); New Jersey Barriers | ||
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