Ready-Mix Concrete Manufacturing in the United States

NAICS 2022 code 327320. NAICS is the North American Industry Classification System, the federal standard for grouping businesses.

1. Overview

Ready-mix concrete is the wet, freshly mixed concrete that arrives on a job site in a rotating-drum truck, ready to pour into forms before it hardens. It is the single most-used building material in the country by volume — the stuff of foundations, slabs, driveways, sidewalks, bridge decks, highways, dams, and the shells of warehouses and parking structures. This industry code covers the batch plants that combine cement, sand, gravel, water, and chemical admixtures and deliver the result in an unhardened ("plastic") state.[1]

Why an investor cares: demand tracks construction spending almost one-for-one, so the industry is a clean, high-volume proxy for the U.S. building cycle — housing, commercial real estate, and public infrastructure. It is also unusually instructive as a business model. Because wet concrete spoils within roughly 90 minutes and before 300 drum revolutions (the standard ASTM C94 limit), and is heavy relative to its value, it cannot be shipped far.[2] That single physical fact makes ready-mix a collection of thousands of small, local markets rather than one national one — which shapes who makes money, how they defend it, and why the industry has drawn repeated antitrust attention.

Public vs. private ways in: there is no pure-play, U.S.-listed ready-mix stock. Public exposure comes bundled inside large, vertically integrated aggregates-and-cement companies (CRH, Vulcan, Martin Marietta, Cemex, Amrize, Knife River), where ready-mix is usually the lowest-margin, most cyclical segment. The bulk of the industry — by company count — is privately held: family firms, local operators, and private-equity or strategic roll-ups. Ready-mix is a textbook local roll-up business, which is exactly why so much of it sits in private hands.

2. What it is and how it's structured

Scope (what's in 327320). Establishments — called batch plants or mix plants — that manufacture concrete and deliver it wet to the buyer. A plant may also mine or buy its own sand and gravel.[1] The economic unit is a plant plus its fleet of mixer trucks serving a roughly 20–30-mile radius. A Census research paper found that approximately 95% of output by weight was shipped less than 100 miles.[3]

What it excludes (adjacent NAICS codes). The federal code deliberately separates ready-mix from the rest of the concrete supply chain:

• 327310 – Cement Manufacturing: the kilns that make the powdered cement binder. Cement is ready-mix's biggest and most volatile input, but it is a different industry.
• 212321 – Construction Sand and Gravel Mining: the pits and quarries supplying aggregates. Owning these is a major source of margin for integrated players, but the standalone pit is coded here.[1]
• 327331/327332/327390 – Concrete Block, Brick, Pipe and Other Concrete Products: these make hardened precast/pre-formed products in a factory, not wet concrete poured on site.
• 327999 – dry-mix concrete (the bagged product you buy at a hardware store) is coded separately, not in 327320.[1]

Ownership mix. Nationally the industry is extraordinarily fragmented. The trade group (National Ready Mixed Concrete Association, NRMCA) estimates roughly 85% of U.S. ready-mix companies are family-owned or locally operated, spread across more than 6,500 plants and about 75,000 mixer trucks.[4] Yet the largest volumes flow through a handful of multinationals that own the whole chain — cement kilns, aggregate pits, and downstream mix plants. So the industry has two faces: a long tail of independents and a consolidating top end.

3. How big it is

Federal statistics for NAICS 327320 (these are our ground-truth figures):

(County Business Patterns, or CBP, is the Census Bureau's annual count of employer establishments; the Small Business Administration, or SBA, sets the employee count below which a firm counts as "small" for federal programs.)

Physical volume gives a cleaner read on the cycle than dollars: the NRMCA estimates the industry shipped about 373 million cubic yards of ready-mix in 2025, with the average selling price up roughly 4% year over year.[8] Production was approximately 400 million cubic yards in 2023, concentrated geographically — Texas represented 15% of volume, California 9%, and Florida 8%, so those three states accounted for nearly one-third of national production.[9] Construction-cost trackers put delivered ready-mix in the ballpark of $145–$185 per cubic yard in 2025–26, varying widely by region and mix design.[10] Private analysts size the U.S. market anywhere from the high-$40-billions (IBISWorld estimates about $47.8 billion for 2025) up to $100 billion-plus, but those higher figures use broader scope and methodology than the federal receipts number; the $43–$48 billion range is the credible one.[11]

Historical cyclicality is severe. U.S. volume peaked at 458.3 million cubic yards in 2005, bottomed at 257.4 million in 2010, and recovered to approximately 400 million by 2023 — a 44% collapse and 15-year recovery.[9]

Undercount caveat — read this carefully. Unlike some industries, ready-mix is well captured by federal data: it is capital-intensive and employer-based (few one-person operators), and it is not government-run, so CBP's 6,356 establishments line up closely with the trade group's 6,500-plant estimate. The distortion is different: the biggest producers are ready-mix divisions of far larger integrated companies, and their concrete revenue is folded into bigger reporting segments. You therefore cannot read the industry off any single company's financials, and no public stock "is" the industry.

4. The investable universe

There is no U.S.-listed pure-play. Exposure is bundled inside diversified building-materials companies, for which ready-mix is one segment among aggregates, cement, and asphalt.

Public companies with meaningful U.S. ready-mix operations:

(ADR = American depositary receipt, a U.S.-traded proxy for a foreign share. Note: Martin Marietta Materials (NYSE: MLM) exited ready-mix in February 2026, transferring its remaining Texas cement and ready-mix operations to Quikrete in an asset exchange that included $450 million of cash moving to Martin Marietta.)[19]

Major private and other owners:

• SRM Concrete (private, Nashville) — describes itself as the largest U.S. ready-mix supplier, with 8,500 employees across 24 states; trade press likewise called it the top U.S. ready-mix operator in early 2025.[20]
• Quikrete Holdings (private) — bought Summit Materials for ~$11.5 billion in 2025, instantly becoming a top-tier vertically integrated producer; also acquired Martin Marietta's Texas operations in 2026.[21][19]
• CalPortland (private) — acquired Vulcan's California ready-mix assets in June 2026, subject to required plant divestitures to preserve local competition.[14]
• Irving Materials (IMI) (private) — large Midwest independent.
• Ozinga (private, Chicago) — long-standing family firm, ~$434 million revenue reported for 2021.[22]
• Thousands of local/family firms — the ~85% of companies that are family-owned or locally operated.[4]

Two names that recently vanished from the public list tell the consolidation story: U.S. Concrete (bought by Vulcan for ~$1.294 billion, 2021) and Argos USA (folded into Summit in 2024, then into Quikrete in 2025).[13][21][23]

5. How the money works

Ready-mix is a manufacturing-plus-logistics business, and its economics turn on four levers: volume, local pricing power, input-cost pass-through, and vertical integration.

Revenue = cubic yards × price. A plant earns by shipping volume at a price per cubic yard. Volume rises and falls with local construction; price depends heavily on how much competition sits within haul distance.

Costs are dominated by materials and delivery. The NRMCA's 2023 Performance Benchmarking Survey (174 participants covering 33% of estimated U.S. production) provides the clearest breakdown: average revenue of $159.68 per yard, material cost of $89.01 (56% of revenue), operating cost of $48.59, and pretax profit of $14.59 per yard (~9% margin). Within materials, cement averaged $40.42 per yard, aggregates $38.87, fly ash and slag $5.24, and other materials $4.48. Total material cost rose 35% from 2019 to 2023; cementitious cost rose 38% and aggregate cost 31%.[9]

Delivery is a major cost center. The survey shows average delivery cost of $29.42 per delivered yard, with the typical trip covering a 28-mile round trip in 114 minutes carrying 8.5 cubic yards. Annual production per mixer truck fell from 5,740 cubic yards in 2022 to 5,380 in 2023. A producer can therefore lose margin even in a strong pricing market if jobsite delays, traffic, driver shortages, or poor scheduling reduce daily turns.[9]

Reported gross margins cluster around 15–20%. Knife River provides a useful public-company comparison: its ready-mix product line produced $779.4 million of revenue and $133.6 million of gross profit in 2025, a 17.1% gross margin — up from 16.2% in 2024 and 15.5% in 2023.[17] Vulcan's concrete segment shipped 4.5 million cubic yards in 2025 at an average price of $188.82 per yard, generating gross profit of $8.05 per yard and cash gross profit of $21.95 per yard.[24]

Long-run returns are thin. Across the 15 years in NRMCA's survey history, average pretax profit was only $3.31 per yard and average pretax return on assets was 4.3%, despite the much stronger 2023 result of $14.59/yard and 12.8% pretax ROA. The difference reflects how severely cyclical downturns compress margins.[9]

The moat is local, not national. Because wet concrete must be discharged in roughly 60–90 minutes before it sets, and is heavy relative to its price, each plant realistically serves only a 20–30-mile radius.[25][3] That makes pricing power a function of local plant density: the operator with the only plant near a booming submarket — ideally one that also owns the nearby sand-and-gravel pit — can hold price. This is why the classic economics literature treats ready-mix as the archetypal collection of small local markets.[26]

Vertical integration captures the margin. Integrated majors own the cement kiln, the aggregate quarry, and the mix plant. They turn a volatile input cost (cement) into an internal transfer and capture margin at three stages instead of one. A standalone mixer, buying cement and aggregates at market, is far more exposed when input prices jump. Vertical integration improves supply security and can capture upstream margin, but it does not make aggregate or cement economically free — it adds quarry permitting, reserve quality, and cement-kiln risks.

Capacity utilization and cyclicality. Plants and mixer fleets are high-fixed-cost assets. When local building slows, fixed costs get spread over fewer yards and margins fall sharply; when it booms, incremental volume drops largely to the bottom line — until capacity, trucks, or drivers run short. Chasing volume at low prices in a saturated market is a well-known way to add revenue while destroying margin.[25]

6. What drives demand

Ready-mix has essentially no demand of its own — it is pulled by construction. In NRMCA's 2023 participant survey, the reported end-market mix was 44% commercial, 31% residential, 9% public works, 11% roads, and 5% parking lots.[9]

• Residential building. Housing starts drive foundations, slabs, and driveways. This is the most interest-rate-sensitive channel.[11]
• Nonresidential building. Warehouses, data centers, factories, and commercial structures. Reshoring-driven "megaprojects" — semiconductor fabs, electric-vehicle and battery plants, and the data-center build-out — are large, concrete-hungry, and a current bright spot.[27]
• Public infrastructure. Highways, bridges, airports, ports, and water systems. This is the single largest end-use channel and the most policy-driven. The Infrastructure Investment and Jobs Act (IIJA) committed $1.2 trillion over five years (about $550 billion of it new spending) heavily toward roads, bridges, and transit — a multi-year tailwind for concrete.[27]
• Regional population growth. Sun Belt migration concentrates demand in specific metros, which matters because the business is local.
• Substitution at the margin. Asphalt competes with concrete for paving; steel and engineered wood compete in structures. Relative prices and lifecycle-cost arguments move share between them.

Recent macro context: Census reported 2025 private construction spending of $1.6475 trillion, down 2.9% from 2024. Private residential spending was $905.2 billion (down 2.6%) and private nonresidential spending was $742.4 billion (down 3.1%). Public construction reached $516.8 billion, up 3.6%.[28]

Forward-looking: infrastructure funding should support volumes through the late 2020s, and megaprojects add lumpy upside, but the housing channel hinges on interest rates, and any construction downturn hits this industry immediately and hard.

7. Regulation

Ready-mix is regulated more as a heavy-industrial, trucking, and (increasingly) carbon-intensive activity than as a financial one:

• Environmental permitting. Plants need air permits for dust and particulate emissions and water permits (under the National Pollutant Discharge Elimination System, NPDES) for stormwater and high-pH wash-water from cleaning trucks and drums. EPA identifies NPDES stormwater controls, concrete washout management, and Clean Air Act minor-source review as core requirements, with additional state and local regulation.[29]
• Embodied carbon and "Buy Clean." Cement is one of the most carbon-intensive building materials, so ready-mix is a focus of federal decarbonization policy. The Environmental Protection Agency (EPA) launched a Label Program for Low Embodied Carbon Construction Materials in August 2024, starting with concrete, asphalt, glass, and steel, and expects to set concrete thresholds by the end of 2025.[30] Federal buyers — via the General Services Administration and Federal Highway Administration — increasingly require Environmental Product Declarations (EPDs), standardized carbon "nutrition labels," and favor lower-carbon mixes. FHWA's Low-Carbon Transportation Materials program authorized up to $2 billion ($1.2 billion for state transportation departments and $800 million for eligible non-state recipients).[31] This is both a compliance cost and a differentiation opportunity: producers can cut embodied carbon by substituting supplementary cementitious materials (SCMs) like slag and fly ash, or using Portland limestone cement (PLC), for some of the ordinary cement. NRMCA reported that participating members reduced concrete's measured carbon footprint by 21% over seven years through blended cements, SCMs, and mix optimization.[32]
• Worker safety. The Occupational Safety and Health Administration (OSHA) respirable-silica standard governs dust exposure at plants. BLS reported 110,800 ready-mix jobs in December 2024 and average hourly earnings of $33.70 for all employees.[33]
• Trucking rules. Mixer fleets fall under Department of Transportation / Federal Motor Carrier Safety Administration (FMCSA) rules — commercial driver's licenses (CDLs), hours-of-service limits, and road weight limits that constrain how much a loaded truck can legally haul.
• Antitrust — an unusually live issue here. Because local markets are concentrated, ready-mix has drawn repeated Department of Justice (DOJ) enforcement. Argos USA paid a $20 million criminal penalty over a Georgia/South Carolina price-fixing and bid-rigging conspiracy; company executives were separately convicted, and a parallel investigation covered Iowa and neighboring states.[34] More recently, the California Attorney General secured a settlement requiring plant divestitures in connection with CalPortland's acquisition of Vulcan's California assets (2026) — direct evidence that local concentration matters even when the national industry looks fragmented.[14]
• Trade policy. In 2025 the federal government placed a 25% tariff on cement imports from Canada and Mexico, which together supply roughly a quarter of U.S. cement imports; the Portland Cement Association (PCA) warned it would raise construction costs — a direct input-cost headwind for mixers.[27]

8. Competitive dynamics and consolidation

The national picture is one of extreme fragmentation slowly being rolled up. The federal Herfindahl-Hirschman Index (HHI) — a standard concentration gauge where antitrust regulators treat anything below 1,500 as "unconcentrated" — is just 99 for this industry, essentially atomistic at the national level.[5] The top four firms hold about 15% of revenue, the top eight 22%, the top 20 35%, and even the top 50 only 50%.[5] Half the industry's revenue sits outside the 50 largest companies.

That national fragmentation coexists with tight local markets and steady consolidation at the top. The strategic logic is vertical integration and geographic density: control cement, aggregates, and mixing in a metro and you control both cost and price. The deal record shows the trend accelerating:

• Vulcan / U.S. Concrete — ~$1.294 billion (2021), adding ready-mix in California, Texas, and the Northeast.[13]
• Summit Materials / Argos USA — ~$3.2 billion (2024), creating a top-tier cement-and-concrete platform.[23]
• Quikrete / Summit Materials — ~$11.5 billion (2025), combining Quikrete's bagged-products business with Summit's aggregates, cement, and ready-mix.[21]
• Quikrete / Martin Marietta Texas — asset exchange (February 2026), with $450 million cash to Martin Marietta; Martin Marietta exited ready-mix entirely.[19]
• CalPortland / Vulcan California — acquisition (June 2026), subject to plant divestitures required by California AG to preserve local competition.[14]
• Amrize spun out of Holcim (2025) and Knife River out of MDU (2023), creating new stand-alone North American materials companies.[16][17]
• Alongside the majors, large independents like SRM Concrete keep growing by acquisition.[20]

The competitive edge, whether for a multinational or a local family firm, is the same: own the aggregates and the closest plant to where the building is happening.

9. Risks

• Cyclicality. Demand is tied directly to construction, housing starts, and interest rates. A building slowdown hits volumes and, because of high fixed costs, margins even harder. The 44% volume collapse from 2005 to 2010 is the reference case.[9]
• Input-cost volatility. Cement, diesel, and aggregate prices swing, and thin margins leave little room when pass-through lags — especially on fixed-price contracts. The 2025 cement tariffs add to this.[27]
• Labor. A persistent mixer-driver shortage constrains delivery capacity in busy markets. The NRMCA's 2022 driver survey found that 70% of participating companies said they had lost business because of driver shortages.[35]
• Commoditization / no national pricing power. For a standalone producer the product is a commodity; pricing power exists only where local density allows it.
• Legal and antitrust exposure. The same local concentration that supports pricing invites DOJ and state AG scrutiny and criminal-antitrust risk.[34][14]
• Carbon transition. Decarbonization rules and Buy Clean procurement raise costs and can strand higher-carbon operations, even as they reward early movers on low-carbon mixes.[30] Fly ash availability may tighten as coal plants retire, while slag is geographically constrained by iron and steel production.
• Weather and seasonality. Pours stop in freezing or wet conditions, making revenue seasonal and weather-dependent.
• Quality and liability. Water content, temperature, air entrainment, strength development, and delivery time affect whether a batch meets specification. A failed structural test can create demolition, replacement, and litigation costs far larger than the value of the concrete sold.

10. How to invest and the outlook

Public-market routes. Buy the integrated majors and accept that ready-mix is only a slice of what you own: CRH (CRH), Vulcan (VMC), Cemex (CX), Amrize (AMRZ), Knife River (KNF), Titan America (TTAM), and Eagle Materials (EXP), plus foreign-listed Heidelberg Materials and Buzzi. Investors generally buy these companies for their aggregates franchises — which carry the highest and most durable margins — and treat ready-mix as the cyclical, capital-intensive tail. Anyone specifically seeking ready-mix exposure should look at where each company's concrete volumes and metros sit, not just the headline ticker. Note that Martin Marietta (MLM) is no longer a meaningful ready-mix vehicle after its February 2026 exit.[19]

Private-market routes. This is where most of the industry lives. Options range from directly owning or building a local plant network, to backing a private-equity roll-up of independents, to the strategic scale now held privately by Quikrete after the Summit deal. Ready-mix is a classic local consolidation play: fragmented ownership, hard-to-ship product, and real value from stitching plants and aggregate pits into a dense regional footprint.

Underwriting should be local rather than based on a national market-growth forecast. The crucial diligence items are: the practical trade radius; number and location of effective competitors; permitted replacement sites; fleet age; driver retention; yards per truck; round-trip minutes; plant utilization; owned versus purchased cement and aggregate; customer and project concentration; contract-price reset timing; returned or rejected loads; environmental history; land control; and replacement capital expenditure. Transaction prices for integrated cement-and-aggregate portfolios should not be applied mechanically to an independent batch plant.

Near-term drivers (forward-looking). The setup into the late 2020s is a tug-of-war. On the demand side, IIJA infrastructure money and reshoring megaprojects (data centers, chip fabs, battery plants) support volumes, while housing swings with interest rates.[27] On the cost side, cement tariffs and the price of decarbonization press on already-thin margins, but low-carbon concrete backed by federal Buy Clean procurement is emerging as a genuine competitive differentiator.[27][30] And the consolidation wave shows no sign of slowing — the strategic prize remains the same as ever: own the aggregates and the nearest plant, market by local market.

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Sources

1. U.S. Census Bureau, 2022 NAICS Definition — 327320 Ready-Mix Concrete Manufacturing (2022). https://www.census.gov/naics/ (industry scope and exclusions); see also NAICS Association, "NAICS Code 327320," https://www.naics.com/naics-code-description/?code=327320
2. National Ready Mixed Concrete Association (NRMCA), About Concrete (2025). ASTM C94 discharge limits (90 minutes, 300 drum revolutions). https://www.nrmca.org/draft-about-concrete/
3. U.S. Census Bureau, Research Paper — Geographic Concentration of Ready-Mix Concrete (2017). ~95% of output shipped <100 miles. https://www2.census.gov/ces/wp/2017/CES-WP-17-38.pdf
4. National Ready Mixed Concrete Association (NRMCA), Industry overview / About (2025). https://www.nrmca.org/
5. U.S. Census Bureau, 2022 Economic Census — Concentration Ratios and Receipts, NAICS 327320 (2022). Receipts $42.95B; 1,994 firms; CR4 15%, CR8 22%, CR20 35.2%, CR50 50.2%; HHI 99.2. https://www.census.gov/programs-surveys/economic-census.html
6. U.S. Census Bureau, County Business Patterns 2023, NAICS 327320 (2023). 6,356 establishments; 94,195 employees; $7.17B annual payroll. https://www.census.gov/programs-surveys/cbp.html
7. U.S. Small Business Administration, Table of Small Business Size Standards (2023). 500-employee threshold for NAICS 327320. https://www.sba.gov/document/support-table-size-standards
8. National Ready Mixed Concrete Association / Concrete Financial Insights, U.S. Concrete Industry Data (2025). ~373 million cubic yards shipped; ~4% price increase. https://concretefinancialinsights.com/us-concrete-industry-data
9. National Ready Mixed Concrete Association, 2023 Performance Benchmarking Survey and State of the Industry (2023). ~400M cubic yards (2023); TX 15%, CA 9%, FL 8%; per-yard economics; historical volume cycle (458.3M peak 2005, 257.4M bottom 2010); 15-year average pretax profit $3.31/yard. https://www.nrmca.org/wp-content/uploads/Performance_Benchmarking_Survey_and_State_of_the_Industry.pdf
10. CostFlowAI, 2026 Concrete Prices: $145–$185/Yard + Tariff Impact (2025). https://costflowai.com/blog/concrete-costs-2026-tariffs-shortages-and-budget-guide/
11. IBISWorld, Ready-Mix Concrete Manufacturing in the US — Industry Report (2025). ~$47.8B market size; CRH largest producer; concentration figures. https://www.ibisworld.com/united-states/industry/ready-mix-concrete-manufacturing/552/
12. CRH plc, 2025 Form 10-K (2025). Americas ready-mix volume 16.7 million cubic yards. https://www.sec.gov/Archives/edgar/data/849395/000162828026009043/crh-20251231.htm
13. Vulcan Materials Company, Vulcan Completes Acquisition of U.S. Concrete (2021). ~$1.294B deal, closed Aug. 26, 2021. https://www.prnewswire.com/news-releases/vulcan-to-acquire-us-concrete-301306495.html
14. California Attorney General, Attorney General Bonta Secures Strong Foundation Settlement in California Concrete Industry (2026); CalPortland, CalPortland Company Acquires Vulcan Materials California Ready-Mixed Concrete Assets (June 2026). https://oag.ca.gov/news/press-releases/attorney-general-bonta-secures-strong-foundation-settlement-california-concrete; https://www.calportland.com/media-center/calportland-company-acquires-vulcan-materials-california-ready-mixed-concrete-assets/
15. Cemex, 2025 Form 20-F (2025). 279 U.S. plants (35 inactive); 55% of U.S. external revenue from ready-mix. https://www.sec.gov/Archives/edgar/data/1076378/000119312526177605/d120395d20f.htm
16. Holcim, Holcim Completes Spin-off of North America Business (Amrize) (2025). NYSE/SIX: AMRZ; June 23, 2025; ~$29.5B debut market value; 273 North American ready-mix plants. https://www.holcim.com/media/media-releases/holcim-completes-spin-off-of-north-america-business; https://www.sec.gov/Archives/edgar/data/2035989/000203598926000017/holcim-20251231.htm
17. Knife River Corporation, 2025 Form 10-K (2025). NYSE: KNF; 135 plants, 13 states, 3.9M cubic yards; ready-mix gross margin 17.1%. https://www.sec.gov/Archives/edgar/data/1955520/000195552026000003/knf-20251231.htm
18. Titan America, 2025 Form 10-K (2025). NYSE: TTAM; 4.594M cubic yards at $162.36/yard average. https://www.sec.gov/Archives/edgar/data/2035304/000203530426000047/ttam-20251231.htm
19. Martin Marietta Materials, Transaction Announcement — Texas Operations to Quikrete (February 2026). Asset exchange including $450M cash to MLM. https://www.sec.gov/Archives/edgar/data/916076/000095015726000175/ex99-1.htm
20. SRM Concrete, Corporate Website (2025); Concrete Products, Producers January 2025. 8,500 employees, 24 states; called top U.S. ready-mix operator. https://www.smyrnareadymix.com/; https://concreteproducts.com/index.php/2025/01/21/producers-january-2025/
21. Summit Materials / Quikrete, Summit Materials Completes Merger with Quikrete (2025). ~$11.5B enterprise value; closed Feb. 2025. https://www.prnewswire.com/news-releases/summit-materials-completes-merger-with-quikrete-302372579.html
22. Giatec Scientific, Top Ready-Mix Concrete Producers in North America (Ozinga ~$434M revenue, 2021). https://www.giatecscientific.com/education/top-11-ready-mix-concrete-producers-in-north-america/
23. Summit Materials, Summit Materials Completes Combination with Argos USA (2024). ~$3.2B combination, closed Jan. 2024. https://www.prnewswire.com/news-releases/summit-materials-completes-combination-with-argos-usa-302033663.html
24. Vulcan Materials, 2025 Form 10-K (2025). Concrete segment: 4.5M cubic yards at $188.82/yard, $8.05 gross profit per yard, $21.95 cash gross profit per yard. https://www.sec.gov/Archives/edgar/data/1396009/000162828026009546/vmc-20251231.htm
25. Slabstack, Why Chasing Volume Hurts Ready Mix Concrete Profit Margins (2024/2025). Cost structure, rising delivery costs. https://slabstack.com/resources/blogs/why-chasing-volume-hurts-profits/
26. Chad Syverson & Ali Hortaçsu, "Markets: Ready-Mixed Concrete," Journal of Economic Perspectives / American Economic Association (2008). Local markets, perishability, and haul-radius economics. https://www.aeaweb.org/articles?id=10.1257/jep.22.1.217
27. GMInsights, Ready-mix Concrete Market (2025), and ResearchAndMarkets, United States Cement Industry Report 2025 (2025). IIJA $1.2T/$550B new; 2025 25% cement tariffs on Canada/Mexico (~27% of imports); PCA opposition. https://www.gminsights.com/industry-analysis/ready-mix-concrete-market; https://www.businesswire.com/news/home/20250714847895/en/
28. U.S. Census Bureau, Construction Spending Release — December 2025 (2025). Private spending $1.6475T (down 2.9%); residential $905.2B; public $516.8B (up 3.6%). https://www.census.gov/construction/c30/pdf/pr202512.pdf
29. U.S. Environmental Protection Agency, Concrete Sector Information — Smart Sectors. NPDES stormwater, washout management, Clean Air Act requirements. https://www.epa.gov/smartsectors/concrete-sector-information
30. U.S. Environmental Protection Agency, Label Program for Low Embodied Carbon Construction Materials (Aug. 2024); Holland & Knight, "EPA's New Label Program for Construction Material" (2024). Buy Clean, EPDs, concrete thresholds by end-2025. https://www.epa.gov/chemicals-under-tsca/epa-welcomes-input-technical-documents-cleaner-construction-materials-and; https://www.hklaw.com/en/insights/publications/2024/08/construction-industry-update-epas-new-label-program
31. Federal Highway Administration, Low-Carbon Transportation Materials Program (CLAS Newsletter, Spring 2024). Up to $2B authorized ($1.2B state, $800M non-state). https://www.fhwa.dot.gov/clas/training_tools/clas_newsletter_spring2024.aspx
32. National Ready Mixed Concrete Association, Press Release — Concrete Carbon Footprint Reduction (March 2022). 21% reduction over seven years via blended cements, SCMs, mix optimization. https://www.nrmca.org/press-releases/press-release-march-1-2022/
33. U.S. Bureau of Labor Statistics, Employment and Earnings Tables (December 2024). 110,800 ready-mix jobs; $33.70/hour average earnings. https://www.bls.gov/ces/data/employment-and-earnings/2024/table1b_202412.htm; https://www.bls.gov/ces/data/employment-and-earnings/2024/table3b_202412.htm
34. U.S. Department of Justice, Office of Public Affairs, Ready-Mix Concrete Company Admits to Fixing Prices and Rigging Bids (Argos USA, $20M penalty) and Jury Convicts Two Executives in Longstanding Antitrust Conspiracy to Fix Prices, Rig Bids and Allocate Markets for Concrete (2021–2022). https://www.justice.gov/archives/opa/pr/ready-mix-concrete-company-admits-fixing-prices-and-rigging-bids-violation-antitrust-laws; https://www.justice.gov/archives/opa/pr/jury-convicts-two-executives-longstanding-antitrust-conspiracy-fix-prices-rig-bids-and
35. National Ready Mixed Concrete Association, Mixer Driver Recruitment & Retention Survey (2022). 70% of participants lost business due to driver shortages. https://www.nrmca.org/association-resources/nrmca-surveys-benchmarking/mixer-driver-recruitment-retention-survey/