Comparative Investigation of the Effect of Recycled Fine Aggregate from New and Old Construction Wastes in C-25 Concrete in Ethiopia

Earth & Environmental Sciences

• construction waste 100%
• replacement 27%
• sand 21%
• effect 18%
• physical property 13%
• river 12%
• resource depletion 11%
• waste recycling 10%
• unloading 9%
• waste disposal 8%
• natural resource 7%
• material 6%
• recycling 6%
• environmental impact 6%

Engineering & Materials Science

• Concretes 52%
• Concrete blocks 44%
• Sand 30%
• Rivers 25%
• Recycling 16%
• Physical properties 15%
• Natural resources 10%
• Waste disposal 10%
• Unloading 8%
• Environmental impact 8%
• Testing 4%

Social Sciences

• Ethiopia 83%
• river 27%
• recycling 21%
• waste disposal 12%
• building 9%
• environmental impact 9%
• natural resources 8%