Ready-Mix Concrete Delivery — What to Expect on Pour Day

Pour day is the one day on a job where everything has to line up — literally. The truck shows up, the clock starts, and you’ve got roughly 90 minutes before that mud starts setting up in the drum. There’s no pausing, no “let’s figure it out when it gets here,” no second chances on placement.

If you’ve never ordered ready-mix before — or you’ve had a pour go sideways — here’s a walk-through of what actually happens and what you should have sorted before that truck backs in.

Before the Truck Arrives

Most of the problems we see on GTA pour days trace back to the day before — not the day of.

Site Access

The average ready-mix truck weighs about 30,000 kg fully loaded. That’s not pulling into a suburban driveway without consequences. Before you book delivery, walk your access route and answer three questions:

Can the truck physically get in? Overhead wires, narrow lanes, low-hanging branches, parked cars — any of these can stop a pour before it starts. Trucks need a minimum 3.5m clearance overhead and about 3m width.
Can it get back out? If there’s no turnaround, the truck needs to back in or back out. Either way, you need a spotter. On tight Mississauga subdivision lots, this is a constant issue.
Will the ground hold? Soft ground, fresh topsoil, or rain-soaked clay will swallow truck tires. If the truck gets stuck on your site, that’s your problem — and your bill.

Forms and Prep

Your forms need to be done, braced, and inspected before the truck is dispatched. This isn’t a “we’ll tighten up the last corner while they’re driving over” situation. Check:

Formwork is staked and level
Rebar or mesh is placed and chaired properly
Vapor barrier is down (for slabs on grade)
Sub-base is compacted and at the right elevation
You’ve got your screed rails, bull float, and finishing tools staged

If you’re in Brampton or Pickering and the inspector needs to sign off on rebar placement before the pour, schedule that inspection for the morning of — not the afternoon, not “whenever they can make it.”

The Order Itself

When you call to order ready-mix, you need to know:

Volume in cubic meters. Not “enough for a garage slab.” Measure your area, multiply by thickness, add 5–10% waste factor. A 20x20 foot slab at 4 inches thick is roughly 1.5 cubic meters.
Mix design. 25 MPa general purpose, 30 MPa structural, 32 MPa for anything with engineering specs. If you’re not sure, give us the application and we’ll spec it.
Slump. Standard is 100mm. If you need it wetter for pump placement, say so upfront — don’t add water on site.
Admixtures. Accelerator for cold pours, retarder for hot days, air entrainment for exterior slabs exposed to freeze-thaw. Ontario exterior flatwork should always have 5–7% air entrainment.
Delivery window. Morning pours are better in summer (cooler), afternoon pours are better in late fall (warmer ground temps).

When the Truck Shows Up

Checking the Ticket

Every load comes with a batch ticket. Check it before the truck starts dumping. Verify:

Mix design matches what you ordered
Volume is correct
Slump is within spec
Load time — concrete has a working window of about 90 minutes from batching. If the truck sat in traffic on the 401 for an hour, that window is shrinking fast.

Placement

You’ve got three options for getting concrete from the truck to the forms:

Direct chute: The truck backs up and pours through the chute. Range is about 3–4 meters from the truck. This is the cheapest option and works for anything the truck can get close to — garage slabs, footings along a foundation wall, sidewalks.

Wheelbarrow: For areas the chute can’t reach. Slow, labor-intensive, and your crew will hate you by the third cubic meter. But it works for backyard pads and small residential jobs where a pump isn’t justified.

Concrete pump: A line pump or boom pump places concrete exactly where you need it, even 30 meters from the truck. Required for basement walls, elevated decks, any pour where the truck can’t get within chute distance. Book the pump separately — and book early. GTA pump operators are slammed from April through November.

During the Pour

Once concrete is flowing:

Don’t add water. Every liter of water you dump in the mix drops the strength. If the slump is too low, call the dispatcher — don’t play chemist on site.
Vibrate or rod. Air pockets in footings and walls will compromise strength. Use a pencil vibrator for walls and deep pours. For slabs, a screed and bull float will handle consolidation.
Work in sections. Don’t dump the entire load and try to push it around. Place concrete close to final position, screed, and move to the next section.
Watch the clock. If you’re getting multiple trucks, the gap between loads matters. Too long and you get a cold joint. Too short and you’re overwhelmed. 20–30 minutes between trucks is typical for a small crew.

After the Pour

Finishing

For slabs and flatwork:

Screed to bring the surface to grade
Bull float to push aggregate down and bring cream to the surface
Wait for bleed water to disappear — this is the part most rookies rush. If you start troweling while there’s still bleed water on the surface, you’re trapping it under the finish. The result is a weak, dusty surface that will scale within a year.
Hand float or power trowel for the final finish
Edge and groove joints as needed

Curing

Concrete doesn’t dry — it cures. It needs moisture to gain strength. In the GTA summer, slabs can dry out fast, especially on windy days.

Apply curing compound within an hour of finishing
Or cover with wet burlap and plastic sheeting
Keep it moist for at least 7 days — 28 days for full strength
In winter, use insulated blankets and keep the surface above 10°C for at least 48 hours

Cleanup

Concrete waits for nobody. Wash your tools immediately. Wash the chute area. Any concrete that hits the ground and dries is yours to chisel off later.

Common Pour Day Problems in the GTA

Truck can’t access the site. Happens constantly in older Mississauga neighborhoods with narrow streets and mature trees. Always do a site visit before scheduling delivery.

Rain starts mid-pour. Light drizzle is manageable — cover fresh concrete with plastic. Heavy rain will ruin an unfinished surface. Check the forecast and have tarps ready.

Concrete arrives hot. In July and August, the mix can show up at 28–30°C. This accelerates setting time dramatically. Schedule early morning pours and ask for ice or chilled water in the mix if temps are above 30°C.

Inspector doesn’t show. Municipal inspectors in Brampton and Mississauga are busy. Confirm your inspection time the day before. Don’t let the truck show up before the inspector clears the forms.

What It Costs

Ready-mix in the GTA runs roughly $250–$350 per cubic meter depending on the mix design and delivery distance. Minimums apply — most plants charge for at least 3 cubic meters even if you only need 1.5. Short-load fees add $50–$80 per cubic meter under the minimum.

Pump trucks run $800–$1,500 for a half-day depending on the type and boom reach.

The truck itself typically gets 5–10 minutes of free pour time per cubic meter. After that, standby charges kick in — usually $2–$3 per minute. Have your crew ready and your site prepped so the truck isn’t sitting there while you scramble.

Get a Ready-Mix Quote

If you’re planning a pour anywhere in the Greater Toronto Area, request a quote or call us at 647-926-2597. We deliver from our Mississauga, Brampton, and Pickering locations and can help you spec the right mix for your project. Check out our Ready-Mix division for the full breakdown of what we deliver.