What a ready-mix plant does and who runs them

A ready-mix concrete plant is a facility that combines cement, water, sand, and gravel in large batches, then delivers the mixed concrete to job sites in truck mixers. The plant does the measuring and blending; you receive concrete that is ready to pour. Most ready-mix plants are privately owned businesses — some are independent operations, others are branches of larger concrete companies or construction material suppliers. A few are run by municipalities or public works departments, though this is less common.

The plant itself sits in one location and does not move. What moves is the concrete: a truck arrives at the plant, gets loaded with the mixed batch, and drives to your site while the drum rotates to keep the concrete from hardening. The rotation stops when the truck reaches you, and the concrete is discharged into your forms or foundation.

Ready-mix plants exist because mixing concrete on-site — by hand or with a portable mixer — is slow, inconsistent, and wasteful for anything larger than a small repair. A plant can produce dozens of batches per day in precise formulas, and a truck can deliver a full load in minutes. This speed and consistency is why ready-mix is standard for commercial work, large residential projects, and municipal infrastructure.

Key Takeaways

  • Ready-mix plants measure and blend concrete to your specifications, then deliver it in truck mixers that keep the concrete workable during transport.
  • You order by the cubic yard, and the plant calculates how much cement, water, sand, and gravel to mix based on the strength and finish you need.
  • Minimum orders vary by plant but often range from 1 to 10 cubic yards, and you pay for the concrete plus a delivery charge that depends on distance.
  • The truck has a limited window to unload — usually 45 minutes to an hour — so your site must be ready to receive before the truck arrives.
  • Local plants are found through concrete supplier directories, construction material distributors, or referrals from contractors and concrete finishers in your area.

How to order concrete and what information the plant needs

When you contact a ready-mix plant, you will be asked for the cubic yardage you need, the strength of the concrete (measured in PSI or pounds per square inch), and the intended use. A typical conversation sounds like: "I need 5 cubic yards of 3,000 PSI concrete for a residential foundation." The plant uses this information to determine the exact mix — how much Portland cement, water, sand, and coarse aggregate go into each batch.

You will also need to tell the plant your delivery address and the date and time you want the truck to arrive. Most plants require at least 24 hours' notice, though some accept orders the same day if capacity allows. The plant will confirm whether they service your location and whether the delivery fee fits your budget. Delivery charges are based on distance from the plant and sometimes on the time of day or day of the week.

Before you call, measure or calculate the volume you need. For a slab, multiply length by width by depth (in feet) and divide by 27 to get cubic yards. For a foundation or wall, do the same. If you are unsure, many plants will help you estimate over the phone, or you can ask a contractor or concrete finisher to calculate it for you. Ordering too little means a second truck and a second delivery fee; ordering too much means paying for concrete you cannot use.

Minimum orders, pricing, and delivery fees

Most ready-mix plants have a minimum order, which varies by location and plant size. Common minimums are 1 cubic yard for small jobs or 5 to 10 cubic yards for larger operations. Some plants will deliver less than their stated minimum but charge a premium or a flat fee. Pricing per cubic yard also varies widely — it depends on the strength of the concrete, the distance from the plant, local material costs, and fuel prices. There is no single "going rate" across regions or even within a single region.

Delivery fees are separate from the price per cubic yard. A truck delivering 5 miles from the plant might cost $50 to $100 in delivery; 20 miles might cost $150 to $300 or more. Some plants charge by the mile after a certain distance threshold; others charge a flat fee. A few include delivery in their per-yard price up to a certain distance. Always ask what the total cost will be — concrete price plus delivery — before you commit.

Payment terms vary. Some plants require payment on delivery; others invoice after. If you are a regular customer or a contractor, you may be able to set up an account and pay monthly. Ask about this when you place your order, especially if you are doing multiple pours over time.

Concrete strength, air content, and specialty mixes

The strength of concrete is measured in PSI (pounds per square inch) and refers to how much weight it can bear after it cures. Common strengths are 2,500 PSI for driveways and light-duty slabs, 3,000 PSI for residential foundations and most general work, 3,500 to 4,000 PSI for commercial buildings and heavy loads, and 5,000 PSI or higher for specialized applications. The higher the PSI, the more cement is in the mix, and the higher the cost.

Beyond strength, you may need to specify air content — tiny air bubbles intentionally added to concrete to help it resist freeze-thaw damage in cold climates. If you live in an area with winter freezing, ask the plant whether air-entrained concrete is standard or optional. You may also request additives: accelerators to speed curing in cold weather, retarders to slow it in heat, water reducers to improve workability, or fiber reinforcement to reduce cracking.

Some plants offer colored concrete, self-consolidating concrete (which flows into forms without vibration), or high-performance mixes for specific applications. These cost more and may require advance notice. If you need something beyond standard gray concrete, ask the plant what they can produce and how much lead time they need.

What happens when the truck arrives and unload time limits

The truck driver will back up to your site and position the chute — a long metal tube that extends from the mixer drum to your forms or receiving area. The driver controls the flow of concrete and can adjust the chute angle and length. Your job is to have the site ready: forms set and braced, reinforcement in place, and a clear path for the chute. If the concrete cannot reach where you need it, you will need a pump truck or a wheelbarrow crew to move it.

The concrete must be unloaded within a set time window, usually 45 minutes to an hour from when the truck arrives. If the concrete sits in the drum too long, it begins to harden and becomes unusable. If you are not ready to receive when the truck shows up, you may be charged a waiting fee or a return fee. Some plants charge by the 15-minute increment after the time limit expires.

Once the concrete is poured, it is your responsibility to finish it — level it, smooth it, broom it, or trowel it depending on the desired surface. The plant's job ends when the truck is empty and the chute is rinsed. The driver will rinse the chute at your site or return to the plant to do it; ask beforehand which is standard for that plant.

Finding a ready-mix plant near you

The easiest way to find a local ready-mix plant is to search online for "ready-mix concrete near [your city]" or "concrete supplier [your area]." Most plants have websites listing their service area, available mixes, and contact information. You can also call local concrete finishing contractors or masonry suppliers — they work with ready-mix plants regularly and can recommend reliable ones.

Construction material distributors often carry ready-mix or can direct you to plants they work with. If you are working with a contractor or architect, ask them which plants they use and trust. Contractors often have established relationships with plants and may receive better pricing or priority scheduling.

When you have narrowed down a few options, call and ask about their service area, minimum order, current pricing, and how far in advance they need orders. Some plants are busier than others depending on the season — spring and summer are peak concrete season in most regions, so winter orders may be easier to schedule. If you are planning a large pour, call several weeks ahead.

Common issues and what to do if something goes wrong

The most common problem is the truck arriving before the site is ready. Concrete waits for no one, so if your forms are not set or your crew is not standing by, you will lose time and money. Always confirm the delivery time the day before and have everything in place at least 30 minutes early.

Another issue is ordering the wrong amount. If you order too little, you will have a cold joint — a visible line where one batch ended and the next began — and you will pay for a second delivery. If you order too much, you are paying for concrete you cannot use. Measure carefully or ask for help calculating volume before you order.

If the concrete arrives and you believe it does not meet the specifications you ordered — wrong strength, wrong color, wrong slump (thickness) — tell the driver when ready. Do not pour it. The plant can send a replacement truck or issue a credit. Once the concrete is poured, disputes are much harder to resolve.

If the truck breaks down or gets stuck on the way to your site, the plant is responsible for getting you concrete or refunding your money. This is rare but does happen. Ask the plant what their policy is if a delivery fails to arrive.

Frequently Asked Questions

What is the difference between ready-mix and bagged concrete?

Ready-mix is delivered in bulk by truck and is mixed at a plant to your specifications. Bagged concrete comes in 60- or 80-pound bags that you mix on-site with water. Ready-mix is faster and more consistent for large jobs; bagged concrete is cheaper and more flexible for small repairs or when you do not need much volume.

Can I order concrete for a small job like a mailbox post or a few stepping stones?

Most plants have minimums of 1 to 5 cubic yards, which is too much for very small jobs. For small pours, bagged concrete is usually the better choice. Some plants will deliver less than their minimum for a premium fee, so it is worth calling and asking.

How long does concrete take to cure after it is poured?

Concrete reaches about 70 percent of its strength in 7 days and full strength in 28 days. You can walk on it after a few days, but heavy loads should wait until at least 7 days have passed. The plant can tell you the specific curing time for the mix you ordered, as some mixes cure faster than others.

What if I need concrete delivered on a weekend or holiday?

Some plants offer weekend and holiday delivery, but it usually costs extra. Call ahead and ask whether your plant services those days and what the surcharge is. Availability depends on the plant's schedule and staffing.

Do I need a pump truck to get concrete to the back of my property?

If the ready-mix truck cannot reach your forms with its chute, you will need a pump truck or a crew to wheelbarrow the concrete. Pump trucks are rented separately and add to your cost. Ask the plant whether the truck can reach your site before you order, and plan for a pump if the answer is no.