Ready-mix is the right answer until the approach says otherwise
If the approach to your pour is an old-town street, a hillside track or a yard the truck cannot turn in, the ready-mixed question has already been answered. The British industry's guidance for site personnel opens its delivery chapter by telling the contractor to ensure suitable, stable and safe access for the truck, the largest of which may be up to 10.5 metres long, 2.6 metres wide and 3.8 metres high and weigh 32 tonnes when fully loaded. Those are four separate tests, and a gateway measurement answers only one of them. Ten of the sixteen self-loading mixers in our records carry an overall width, and those widths run from 1.60 to 2.30 metres. That is the alternative as a band rather than a claim: the 1.60 metre machine is one machine, and the widest of the ten stands only 300 millimetres inside the truck it would replace.
Source: British Ready-Mixed Concrete Association and Mineral Products Association, "Ready-Mixed Concrete – Practical guide for site personnel", June 2020 edition, section 3.1 on site preparation, quoted with the association's own ceiling wording — https://brmca.org.uk/documents/BRMCA_Ready_Mixed_Concrete_Practical_guide_July_2020.pdf. Widths from our own specification records for the sixteen self-loading mixers, ten of which carry one; the 300 millimetre clearance is worked out here by subtraction.
Four things have to be true before the truck arrives
The envelope is the part everyone measures and the ground is the part that fails late. Beside the sentence quoted above, the same guidance prints a drawing giving the truck's four axle weights separately, 7.1, 7.1, 9.51 and 9.51 tonnes, captioned there as a typical truck rather than the largest. So the access question is a 2.6 metre gap to pass through, 3.8 metres of headroom above it, 10.5 metres of vehicle to swing and stand, and a surface that will carry a 9.51 tonne axle without rutting. Three of those are settled with a tape and the fourth by the weather: a yard that took delivery in the dry season is not the same yard in the wet one, and a truck that cannot be recovered from it is a 32 tonne problem rather than a scheduling one.
The guidance is equally clear about what happens once the truck is in and still cannot reach the form. Where it cannot discharge directly into the works, transport has to be provided to move the concrete from the delivery vehicle to the pour: a front shovel or a dumper for small volumes, and for larger volumes it states that hiring a pump is usually more efficient. At the formwork it names skips, barrows or pumps. A safety note puts a weight on the manual option, at over 100 kilograms a barrow load and 25 kilograms in a 10 litre bucket, and a banksman is required to supervise the movement and positioning of the truck. That is the cost of the last few metres, and it is not on the ready-mix invoice.
Source: the same association guidance — the four axle weights as printed in Figure 2 of section 3.1 and captioned there as a typical truck; the transport-to-works requirement in section 3.1; the skips, barrows or pumps list in section 4.5; the barrow and bucket weights in the Appendix A safety note on page 22; the banksman requirement in section 3.2.
The clock and the minimum load are the other two gates
The delivery window is a contract term rather than a constant, and the purchaser now writes it. The American ready-mixed concrete specification deleted its default limit of one and a half hours from mixing to the completion of discharge; the clauses that replaced it require the purchaser to state a time limit and a drum-revolution limit, put that duty on the producer where he does not, and require the time limit to be printed on the delivery ticket. Some authorities have put a number back: California's health facilities regulator requires discharge completed within one and a half hours of the mixing water meeting the cement and aggregates, within 300 drum revolutions of which no more than 100 may be mixing, and lets neither party waive either, though it allows a documented extension for unplanned delays and an approved alternative method. The clock starts at the water, not at the gate, so batching, the run out and the queue all come out of the placement window.
The minimum load has no figure that transfers. It exists because the producer's cost floor is a truck movement rather than a cubic metre: one drum, one address, one discharge window, almost none of it changing with how much is in the drum. Of three calculator pages we opened on this question, the first declines to publish a figure and prints seven questions to put to a supplier instead; the other two publish worked American examples and label them, one on a three cubic yard minimum, the other giving the standard American truck as eight to ten cubic yards and sending the reader back to his own supplier. We have sourced no minimum order and no short-load fee for any destination market, so none appears here. What travels is the shape of the bill: one line scales with the concrete, one with the trip.
Source: the deletion of the default limit, and the clauses putting the time and revolution limits on the purchaser with the time limit printed on the delivery ticket, as reproduced verbatim in the appendix to California Health Care Access and Information Policy Intent Notice 82, "Ready Mix Concrete/Grout Placement Times", effective 9 October 2025 — https://hcai.ca.gov/wp-content/uploads/2025/10/PIN_82-Ready-Mix-Concrete-Placement-Times-10-02-2025-A.pdf; the one-and-a-half-hour, 300-revolution and 100-mixing-revolution limits and the no-waiver sentence are that notice's own policy section, written for hospital work in one American state and not asserted to govern your contract. The three calculator pages were opened and read on 24 September 2026; the three-cubic-yard minimum and the eight-to-ten-cubic-yard truck are their own American figures, carried here with their market attached. The cost-per-trip reasoning is ours and carries no figure.
What we count in the customs record, and what that count will not do
The evidence we hold that this category does not publish is the customs record, read properly. For 2024 China declared 18,017 concrete-mixer vehicles exported under the motorised mixer heading, worth 800.26 million US dollars, across 145 partner entries, of which the seven largest destinations take 52.9 per cent of the units. On the importing side the Philippines recorded 1,760 units arriving from China that year, a declared quantity rather than an estimated one. Both sides of that lane are declared rather than estimated. Fifty-seven of the 145 export entries record fewer than ten units, accounting for 200 machines between them, and twelve record a single unit. Half this trade moves through seven lines, and the tail behind is long without being flat: rank 30 took 108 units and rank 90 took eight.
The de-duplication step is what most published rankings skip, and skipping it does not produce a small error: the public interface returns the total row alongside every breakdown of it, separated only by three code fields. Summing all of them inflated Peru's 2024 imports from China from 281 units to 1,124, exactly fourfold, and the uncorrected figure is 2.9 times Peru's own 386 units from the entire world, which is impossible rather than surprising. Two further rules travel with the file. Five of twelve importing countries' unit counts are estimates rather than declarations, and it shows: three land on the same 58,536 dollars per unit and two on the same 63,315, because a unit price was the input that produced them. And Malaysia's declared 16,507 units work out at 313 kilograms each on a heading whose median destination averages 13,617 kilograms per unit.
Source: United Nations Comtrade annual data for the motorised concrete-mixer vehicle heading, 2024, read by us and recomputed here; the export side is China's own declaration and its 145 partner rows add back to the world row exactly. The Philippine figure is that country's own import declaration for the year, a declared quantity rather than an estimated one. The Peru correction, the estimated-quantity flags, the two shared divisors and the Malaysian weight-per-unit check are worked through step by step in our guide to reading a customs table, and the year's destination pattern in our guide to where mixers shipped in 2024. A declared destination is the country named on the shipping documents rather than a place of use, so none of this is a market size and nothing here ranks demand.
What we put in writing that this category does not
Nothing about these machines is exclusive to us: we are a trading company and the machines are built by others, so any claim that only we can do something at the machine level would be false. What is unusual is what we disclose, and every item is checkable against a page already on this site. We publish the drum's geometric volume and the discharged volume as two numbers rather than one: on the one model that clears our publish gate, a 2,900 litre drum discharges 1.6 to 1.8 cubic metres, which is 55.2 to 62.1 per cent of the drum against the 63 per cent the ready-mixed industry rates a mixing drum to. We hold a measured drum volume on four of the sixteen mixers and a discharge figure on fourteen, and never derive one from the other. Where two sheets for one machine disagree the row does not render: one published model shows an empty discharge cell.
Five more in the same spirit. We say when a dimension's measuring position is not established: on nine of the ten measured machines the plant gave dimensions without stating the posture, so we use those widths, which posture barely moves, and refuse their heights as clearance figures. We name the two specification fields that are empty on every machine instead of filling them. Container verdicts run against the door opening less a 50 millimetre margin, which is how one model misses by 45 millimetres and is quoted out of gauge on our own page. We publish no output per hour, day or shift, because that column is empty on all six published mixer models. And we state the origin-certificate rule as the treaty writes it: a certificate not issued at shipment shall still be issued retroactively at the exporter's request within twelve months, subject to the exporting country's own rules, marked ISSUED RETROACTIVELY in Box 13. The widespread claim is that the rate is lost, which is backwards and costs the buyer money.
Source: the drum and discharge figures and the empty discharge cell are the model comparison table on this site's self-loading mixer page, with the percentages computed there; the 63 per cent mixing rating is the National Ready Mixed Concrete Association's own account of truck mixers. Dimension postures, the empty fields and the output column are our own specification records and the model pages built from them, worked through in our guides to what capacity means and to how wide a concrete truck is. The container geometry and the 45 millimetre miss are the door-frame test in our container guide. The retroactive-issuance wording is Rule 11 of the ACFTA operational certification procedures, quoted in full on our Form E page.
Method against method, on the dimensions we can source
Nine dimensions, set side by side. Every cell we cannot source says so in words; none is estimated and none is left blank.
| Dimension | Ready-mix, delivered | Self-loading mixer |
|---|---|---|
| Access width | Up to 2.6 m for the largest truck in general use | 1.60–2.30 m across the ten of sixteen records carrying a width; the four narrowest are 1.85 m or under |
| Approach length | Up to 10.5 m | 4.35–7.06 m across the same ten |
| Headroom | Up to 3.8 m | Unknown to us. Nine of the ten heights carry no stated measuring position; only the tenth has an established travelling height |
| Ground loading | 32 t fully loaded, on axles of 7.1, 7.1, 9.51 and 9.51 t | One machine of the ten has an operating weight confirmed in writing, 5,800 kg, and that figure is the machine empty. No laden weight is recorded for any of the sixteen |
| Batching accuracy | The plant proportions by mass and issues a ticket | Electronic hydraulic weighing is standard on one of six published models, optional on four, and on neither list for the sixth. No accuracy or calibration figure is held for any machine |
| Haul-time constraint | A stated limit printed on the delivery ticket, running from the mixing water rather than from the gate | No plant-to-site leg inside that window. No cycle time is published, because none is recorded |
| Minimum order | Per supplier. No published figure has been sourced for any destination market | None, because there is no trip to amortise. The drum's technical minimum charge is not recorded either |
| Crew | Unknown to us. The only labour requirement our sources state is the association's banksman | Unknown to us |
| Pour point moves | The outbound leg grows daily against a fixed allowance | The machine drives to the new front |
Source: the truck envelope, the axle weights and the banksman requirement are the association guidance quoted earlier. Widths, lengths, heights, postures and the single confirmed operating weight are our own specification records for the sixteen self-loading mixers, counted machine by machine. The weighing entries are the standard and optional equipment lists published with each of the six models on this site. The delivery-ticket requirement is the clause quoted earlier. Every cell marked as unknown is unknown to us and is left that way rather than estimated.
Where ready-mix, a pump or a fixed plant still wins
Three conditions send the answer back the other way, and a supplier who does not say so is selling. Height is the first: a machine can only stand where it can drive, so a second floor, a lift shaft or a core is a pumping problem whatever the drum can do, and we hold no discharge-height figure for any of the sixteen mixers to argue with. Volume is the second: rated discharge across fourteen of the sixteen runs from 1.0 to 4.5 cubic metres, one batch at a time, and a pour measured in hundreds of cubic metres is a plant-and-pump job. Continuity is the third: where demand sits still, a fixed plant fills a second truck while the first is driving, and one self-loading machine cannot load the next batch while it is discharging this one. And where a ready-mix supplier already sits inside your specification's window, buying concrete is simpler than owning anything.
Source: discharge figures as declared by the plants, on record for fourteen of the sixteen self-loading mixers. No discharge height, chute length or discharge reach is recorded on any of the sixteen, which is why no upward claim is made. The batching-in-parallel point is reasoning about how the two are arranged and is deliberately not stated as a ratio, because no measured output exists on either side. The pump condition is the association's own statement that hiring a pump is usually more efficient for larger volumes where the truck cannot discharge directly into the works.
What a written quotation contains, and what to send for one
Send a model and a port. What comes back is one landed figure to that port with the shipping mode written into it, the classification heading named, and the origin certificate identified by who applies for it and when — not a factory-gate price with the hard part downstream. If that model's specification is not yet confirmed in writing, the quotation says so, and the sheet is requested from the plant on its own letterhead rather than carried over from a neighbouring machine, because that carry-over is where a container booking goes wrong. Before you send it, measure two things: the narrowest point on the approach, taken at the height a machine passes through it rather than at ground level, and the drive time from the nearest ready-mix plant at the hour you would pour. If the second sits inside your window and the first admits a 2.6 metre truck, buy the concrete. If either fails, name the port.
Source: this section is our own procedure and introduces no figure. The 2.6 metre truck width is the association's figure quoted at the top of this page.