Volumetric concrete mixer
A volumetric concrete mixer (also known as volumetric mobile mixer) is a concrete mixer mounted on a truck or trailer that contains separate compartments for sand, stone, cement and water.
On arrival at the job site, the machine mixes the materials to produce the exact amount of concrete needed.
Description[]
[1] Volumetric mixers mainly see use as delivery vehicles for specialty high-early strength concrete that sets too rapidly for conventional rotating-drum "agitators,"[2] and have seen use in the construction of airfield pavements.[3] Some concrete suppliers offer general purpose concrete batched in a volumetric mixer as a practical alternative to ready-mix if quantities and scheduling are not fully known, in order to eliminate wastage and prevent premature stiffening of the mix. Additionally, typical batch plant opening fees for after-hours works do not apply.[4]
The volumetric mixer varies in capacity size up to 12 m3 and has a production rate around 60m3 an hour depending on the mix design. Many volumetric concrete mixer manufacturers have innovated the mixer in capacity and design, as well as added features including colour, admix, and fibre systems, and grout concrete.
The advantages of a volumetric mixer include
- Reduces wastage and associated costs by providing exact quantities.
- No risk of premature stiffening of concrete if delays are encountered.
- Permits delivery of smaller quantities of concrete.
- Night time works do not require the re-opening of a concrete batch plant.
- Flexibility to alternate between multiple concrete mixes as required for the application.[citation needed]
History[]
In the mid-1960's, companies such as Reimer Mixers (manufactured under the name ProAll circa 2016), Cemen-Tech and Zimmerman began building their own versions of volumetric concrete mixers .
In 1999, equipment manufacturers created a trade association, Volumetric Mixer Manufacturers Bureau (VMMB). It had six charter members: Cemen Tech, Inc., Zimmerman Ind, Inc., ProAll Reimer, Bay-Lynx, Custom-Crete, and Elkin.[5]
See also[]
References[]
- ^ Casey, Jon M. "Parmer Metered Concrete offers precision and quality". Hard Hat News. Retrieved 24 November 2014.
- ^ Volumetric Concrete
- ^ "Antoun". Antoun.
- ^ "SiteMix Services". SiteMix. Archived from the original on 2019-03-11.
- ^ "VMMB Members". Volumetric Mixer Manufacturer Bureau.
External links[]
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