The construction industry generates more solid waste than any other sector in the United States — an estimated 600 million tons of construction and demolition debris annually, according to the EPA. Concrete alone accounts for the largest share of that figure. For decades, the default response was to haul demolished concrete to a landfill and haul virgin crushed stone in from a quarry. That model is expensive, resource-intensive, and increasingly out of step with where the industry, regulators, and project owners are heading.
Recycled aggregate — crushed concrete, reclaimed asphalt pavement, and recovered masonry processed and graded for reuse — has moved from a niche alternative to a mainstream material on commercial, municipal, and infrastructure projects across the country. In Georgia, where rapid development and infrastructure investment continue at a significant pace, the case for recycled aggregate has never been stronger.
Here are five concrete reasons (no pun intended) why specifying recycled aggregate makes sense for your next project.
1. Meaningful Cost Savings Across the Project
Cost is where recycled aggregate makes its most immediate argument. Virgin crushed stone — granite, limestone, or trap rock — must be quarried, crushed, screened, and hauled from the source. In metro Atlanta, quarry-run base aggregate typically runs $12 to $20 per ton delivered, depending on haul distance and fuel prices. Recycled crushed concrete aggregate (RCA) sourced from a regional processor generally runs $6 to $12 per ton — often 30 to 50 percent cheaper before accounting for haulage.
The savings compound when you factor in the disposal side. Demolishing a concrete slab or foundation generates material that has to go somewhere. Tipping fees at Georgia landfills range from $35 to $60 per ton. If you're tearing out 500 tons of concrete on a commercial site and then purchasing 500 tons of virgin base material, you're paying for the waste to leave and for the equivalent virgin material to arrive. Crushing and reusing on-site, or supplying recycled material to a processor and purchasing back-processed RCA, can eliminate both legs of that double cost.
On large projects — highway widening, parking structure demolition, industrial site redevelopment — the savings are material enough to affect project economics. Even on mid-size commercial projects, specifying RCA for subbase and base course applications can shave 10 to 20 percent off earthwork and materials budgets.
2. Environmental Impact That Goes Beyond the Marketing
The environmental benefits of recycled aggregate are real, not just a marketing overlay. The most direct impact is landfill diversion. Construction debris is the single largest component of landfill intake in Georgia, and concrete is the heaviest portion. Diverting it back into productive use conserves landfill capacity and reduces the methane generation and leachate management costs associated with landfill operations.
The second major impact is quarrying reduction. Extracting virgin aggregate requires blasting, heavy equipment, diesel fuel, and land disruption at the quarry site, plus significant transportation emissions to move heavy stone from quarry to project. The EPA estimates that producing one ton of recycled concrete aggregate uses approximately 40 percent less energy than producing virgin aggregate from a quarry. Transportation emissions are also typically lower when recycled material is sourced regionally versus virgin stone hauled from a distant quarry.
For projects subject to environmental impact review, stormwater management requirements, or sustainability reporting, these quantifiable reductions in embodied carbon and resource extraction carry real weight. Recycled aggregate's lower embodied carbon is documented in Environmental Product Declarations (EPDs) that can be used in life-cycle assessments.
There's also a carbon sequestration angle that's often overlooked: concrete naturally reabsorbs CO2 over time through a process called carbonation. When concrete is crushed and exposed to atmosphere, the surface area available for carbonation increases dramatically, accelerating the reabsorption of some of the CO2 that was emitted during original cement production.
3. Performance Equivalency for Most Applications
The most common objection to recycled aggregate is performance: can it really do what virgin stone does? For most base-course and subbase applications, the answer from decades of research and field use is yes.
Recycled Concrete Aggregate processed to GDOT specifications (Georgia Department of Transportation) can meet or exceed the California Bearing Ratio (CBR) and compaction requirements for road base, parking lot subbase, and building pad applications. High-quality RCA from reinforced concrete demolition — crushed and screened to the specified gradation — behaves predictably under compaction and load.
There are nuances. RCA has a higher absorption rate than virgin granite, which affects moisture sensitivity and mix design when used in bound applications. It contains residual cement paste that can cause expansion if sulfates are present. And RCA should not be used in applications where freeze-thaw cycling is severe — though Georgia's climate makes this a minor concern compared to the upper Midwest or Northeast.
For the applications where RCA performs equivalently — road base, parking lot base course, building pad fill, trench backfill, drainage blankets — there is no meaningful performance trade-off. GDOT's Standard Specifications recognize recycled concrete aggregate for several base and subbase applications. Many Georgia DOT projects and county road improvements already routinely specify RCA where appropriate.
Reclaimed Asphalt Pavement (RAP) has an even stronger performance track record in bound applications: asphalt mixes incorporating up to 30 percent RAP are standard practice across Georgia, and higher-RAP mixes are increasingly approved. The residual asphalt binder in RAP contributes to the new mix, reducing the quantity of virgin binder needed.
4. LEED Credits and Green Building Certification Advantages
For project teams pursuing LEED certification — whether LEED BD+C for new construction or LEED O+M for existing buildings — recycled aggregate contributes to multiple credit categories.
The most direct contribution is under the Materials and Resources category. LEED v4 credits for Building Product Disclosure and Optimization reward the use of materials with Environmental Product Declarations and recycled content. Recycled aggregate with a certified EPD qualifies, and its recycled content percentage contributes to the recycled content calculation for the overall project.
Construction and Demolition Waste Management credits reward diverting demolition debris from landfills. Projects that crush and reuse on-site concrete, or divert demolished concrete to a certified recycling processor, can document that diversion for credit toward the waste management threshold (typically 50 to 75 percent diversion by weight).
Regional Materials credits under LEED reward sourcing materials from within 100 miles of the project site. Most metropolitan Atlanta area recycled aggregate processors are well within that radius, making RCA an easy win for regional materials credit compliance.
Beyond LEED, green building programs like Atlanta's voluntary Green Building Ordinance and federal sustainability requirements for GSA-managed projects increasingly reference sustainable materials use. Projects competing for federal contracts — where sustainability criteria are becoming standard evaluation factors — benefit from documented use of recycled materials.
5. Regulatory Compliance and a Shifting Policy Environment
Georgia and federal regulations are moving in a direction that makes recycled aggregate use not just advantageous but eventually expected. Understanding where policy is heading lets project owners and contractors position themselves ahead of the curve rather than scrambling to adapt.
At the federal level, the Infrastructure Investment and Jobs Act (IIJA) of 2021 included substantial provisions directing federal agencies to develop guidance on the use of recycled materials in federally funded infrastructure. The Federal Highway Administration has been expanding its technical resources on recycled pavement materials, and state DOTs receiving federal funds are under increasing pressure to document materials sustainability.
Georgia's Department of Natural Resources oversees solid waste management, and the Georgia Solid Waste Management Act establishes waste reduction goals that incentivize construction debris diversion. Contractors working on projects subject to Stormwater Pollution Prevention Plan (SWPPP) requirements should also note that using recycled aggregate on-site can reduce the quantity of new material imported, decreasing associated vehicle traffic and compaction activity that contributes to site disturbance.
For contractors pursuing or maintaining certifications under programs like the Georgia Minority Business Enterprise (MBE), Disadvantaged Business Enterprise (DBE), or EPA's environmental justice frameworks, demonstrated use of sustainable materials provides additional differentiation when bidding on government contracts with sustainability evaluation criteria.
Georgia EPD (Environmental Protection Division) maintains a beneficial use determination process for certain recycled materials, including RCA. Materials that qualify for beneficial use status are exempt from solid waste regulation, removing a potential compliance barrier for contractors who want to process and supply RCA.
Practical Considerations for Georgia Projects
Using recycled aggregate well requires attention to sourcing and quality. Not all RCA is created equal. Aggregate from high-strength reinforced concrete will test differently than material from a mixed demolition site that includes block, brick, and tile. Responsible processors test and certify their products; buyers should request gradation analyses and ask about the source material.
For projects under GDOT jurisdiction or subject to county specifications, confirm that the intended application is approved for RCA and obtain the appropriate product documentation. Geotechnical engineers specifying base course material should account for RCA's slightly higher absorption rate in pavement design calculations.
On-site crushing — processing demolition material on the project site rather than hauling it out — offers the greatest cost savings but requires permitting from Georgia EPD for portable crushing operations. A registered contractor or processor can typically manage this permitting process and operate the equipment under their license.
At Thrare Contracting, we supply and place recycled aggregate materials for commercial, industrial, and government projects across the Atlanta metropolitan area. Our team understands GDOT specifications, LEED documentation requirements, and the sourcing chain for certified RCA in Georgia. Contact us to discuss your project's materials requirements.