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Carry the materials dry and mix only what the pour actually needs. Batch, measure, mix and dispense from one unit — on site, on demand, with no short loads and nothing hauled back.
How volumetric differs
A drum truck leaves the plant with concrete already mixing and a hard deadline attached. A volumetric plant carries sand, stone, cement, water and admixture in separate compartments and mixes continuously at the discharge. Nothing sets on the way to site.
Representative models
Figures below are manufacturer-published for representative units. Configurations vary by chassis, market and options — every quote confirms the exact build.
The premium line. Structural excellence, maximum reliability.
The premium line. Structural excellence, maximum reliability.
Functionality-focused, medium-to-high volume producers. Inherits S-series strengths; monolithic structure, conventional components.
The premium line. Structural excellence, maximum reliability.
Lowest investment cost while retaining Starmix strength and ease of operation.
Lowest investment cost while retaining Starmix strength and ease of operation.
Figures and model images are from the StarMix US website. Configurations vary by chassis, market and options — every quote confirms the exact build.
Where it earns
Latex-modified overlay has a working window measured in minutes, not hours, and the polymer dose has to hit the design — not close enough. A drum truck is already hydrating when it leaves the plant. Volumetric metering puts the latex in at the pour, at the ratio the deck called for.
Fast-set and CSA mixes start hydrating the moment water hits cement. They will not survive a haul in a rotating drum, and a night lane-return does not wait on a batch plant. Mix on site against the reopen time, not against the truck clock.
Pool shells, retaining walls, and slope work run at the nozzle. A barrel load is the wrong unit — too much, then nothing. Continuous supply at a controlled rate keeps the crew shooting instead of waiting on the next truck.
A city or county crew does many small pours across scattered sites in a day. Full barrel loads for that work are waste: short-load fees on the way in, returned concrete on the way out. Mix what the stop needs, then move.
When the nearest ready-mix plant is a long haul — or there is not one — a drum truck is not a plan. Pads, haul roads, and plant foundations need concrete that has not already set in transit. Carry the materials dry and mix at the hole.
The job is a few yards, not a truckload. Short-load fees and returned concrete eat the margin on work that should have been simple. Pay for what you place. Unused material stays dry in the bins.
After delivery
Volumetric equipment rewards a trained operator and punishes a guessing one. Calibration, gate settings and flowmeter positions are what stand between a good pour and a rejected one.
Tell me your typical load size, how far you haul, and what you throw away in a month. That comparison usually answers the question faster than a brochure does.