Cement Mixer: Difference between revisions

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[[Category:GVCS]]
[[Image:CementMixer.png|thumb|400px|Cement Mixer]]


==Overview==
==Overview==


A '''Cement Mixer''' (also commonly named a concrete mixer) is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. <ref name="Concrete Mixer">{{cite web |url=http://en.wikipedia.org/wiki/Concrete_mixer |title=Cement Mixer |publisher=Wikimedia Foundation, Inc}}</ref>


==Specifications==
{{Video}}
 
==Skid Loader Mounted Cement Mixer==
http://www.monolithic.com/stories/who-needs-the-monolithic-portable-concrete-mixer-you-do
 
http://www.monolithic.com/stories/monolithic-products-and-manufacturing/photos/2
http://www.monolithic.com/stories/rentable-and-buyable-the-monolithic-portable-concrete-mixer
http://shop.monolithic.com/products/monolithic-portable-concrete-mixer
http://shop.monolithic.com/products/paddles
 
==Other==
 
"To optimize the ability to produce concrete on a small scale, a self-loading mixer with weight-batching of ingredients is desirable."
 
This covers the design for the concrete mixer with batching hopper. The document says "proprietary/confidential" on it, referring to the combination of the weighing system with the batch loading hopper, but I'll happily open-source it now:
 
[[File:weighbatch.pdf]]
 
The tilting batch hopper goes back at least to the 40s in Australia, via Lightburn (biggest Aus. manufacturer of portable mixers) and BritStand (British Standard, also Australia).  It was developed as a simplified way to obtain the advantages of machines with power-operated loading hoppers, [http://www.gspaik.com/ConcreteMixerMachineWithDalaHopperLift.html such as the following]:


[[Image:britstand.jpg|thumb|right|400px|BritStand]]
==Detailed Description==
A concrete mixer (also commonly called a cement mixer) is a device used to automate the preparation of cement by mixing it with other aggregates such as sand or gravel and water to form concrete. A typical concrete mixer uses a revolving drum in which the components are automatically mixed. The resulting mix is used as on of the most important elements on construction.


That one is still made in India (there are a number of manufacturers in India with equivalent products), and is almost an exact copy of the highly popular Jaeger 4-S machine from the 1920s in the US, right down to the "flat spots" on the bottom of the mixing drum (a Jaeger patented feature of their drums at the time).
[[Concrete]] is used more than any other man-made material in the world. As a part of the [[GVCS]], it unlocks a range of building techniques and methods, depending on characteristics of the environment and type of structure to be built.


The weigh-batching feature on portable mixers goes back at least to Benford (UK) in the 1960s, superseded by Winget (UK) who [http://winget.co.uk/productRangeOverview.aspx?CategoryId=1 produce the most advanced machines of this type].
==Product Ecology==
{{Product Ecology
|Product={{Cement Mixer}}
|From=
*{{Lathe}}
*{{Motor}}
*{{LifeTrac}} - Mounting
*{{Furnace}} - Steel
*{{Torch Table}} - Cutting
*{{Ironworker}} - Holes


(Middle photo is a hydraulic version of the self-loading tilting-drum mixer; bottom photo is the self-loading horizontal reversing-drum mixer with the weighing device, a splendid piece of equipment but at a cost of about $50k.  Both have automatic measuring water tanks. [http://winget.co.uk/index.aspx Go here] for larger photos on their homepage that cycle between the various machines.)
|Uses=
*{{Power Cube}}
*[[Lime]]


My innovation here consists of: <br>
|Creates=
a) adding a load cell under a hand-operated batch hopper, and <br>
*[[Cement]]
b) an outboard system for measuring water, and then <br>
c) a microprocessor-controlled totalizer to get the ingredient weights correct. <br>


To turn this into a design that can be built, I think will require empirical testing to determine what kind of mountings are necessary a) for the load cell to work accurately, and b) to prevent the weight of the load in the batch hopper from unbalancing the mixer on the ground.  Lightburn and BritStand got the tilting batch hopper to work with a standard mixer mounting, subtly modified to offset the drum & frame slightly to the right (as seen in the photo) relative to its position on a normal mixer without the loading hopper.  The CAD work can come up with a blueprint but it should still be built & tested empirically.
|Enables=
*[[Workshop]]
*[[Greenhouse]]
*[[HabLab]]
*[[Foundations]]
*{{Multimachine}}
*[[Foundry]]


Note, the mixer drum discharge levers (two levers acting together) shown on the machine BritStand photo are per Australian standards; in the US & elsewhere, a single lever or a wheel & gear assembly is used.
|Components=
*Drum
*Frame
*Motor
*Water Feed
*Hinge


These things could be built in various sizes.  For concrete batch size of 2 cubic feet and above, 2-wheeled concrete carts would be needed, for example the Gar-Bro unit (these are still being made, and are made in the US).
}}


[[Image:garbro.jpg|thumb|400 px|Gar-Bro]]
==OSE Project Status/Schedule==


I would suggest the following: <br>
The concrete mixer is currently in development and is undergoing CAD stages of design. It is considered a priority for the [[2011 Infrastructure Buildout]], as a part of the [[GVCS Rollout]]
a) Build a sub-frame with its own feet (to handle the weight distribution issue) for permanent attachment (by welding onto the mixer frame) with Stone and equivalent contractor's grade mixers, or <br>
b) build a self-contained portable frame that could be bolted or clamped onto smaller mixers such as the common Gilson or Red Lion mixers (the ones that use A-frames at each end of the drum (when seen from the end) as the mounting for the unit).


The above is one entire design approach for weigh-batching.  Another is the "micro-batcher" system I've designed, which is in another set of documents that are in AppleWorks .cwk format, and need to be converted to PDFs, and editing is needed in the texts to do a complete job of it.
==See Also==
*[[Cement]]
*[[Ferrocement]]
*[[Geopolymers]]
*[[Monolithic Dome]]
*[[Kiln]]


Down
==Links==
*[http://en.wikipedia.org/wiki/Concrete_mixer Concrete Mixer]
*[http://concretelathe.wikispaces.com/Concrete Concrete Lathe]


----
[[Category:GVCS]]
[[Category:GVCS]]
{{GVCS_List}}
{{GVCS Footer}}

Latest revision as of 10:35, 9 March 2017


Cement Mixer
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Cement Mixer


Overview

A Cement Mixer (also commonly named a concrete mixer) is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. [1]

Detailed Description

A concrete mixer (also commonly called a cement mixer) is a device used to automate the preparation of cement by mixing it with other aggregates such as sand or gravel and water to form concrete. A typical concrete mixer uses a revolving drum in which the components are automatically mixed. The resulting mix is used as on of the most important elements on construction.

Concrete is used more than any other man-made material in the world. As a part of the GVCS, it unlocks a range of building techniques and methods, depending on characteristics of the environment and type of structure to be built.

Product Ecology

Product Ecology
Cement Mixer Cement Mixer
From Uses Creates Enables

Components

  • Drum
  • Frame
  • Motor
  • Water Feed
  • Hinge

OSE Project Status/Schedule

The concrete mixer is currently in development and is undergoing CAD stages of design. It is considered a priority for the 2011 Infrastructure Buildout, as a part of the GVCS Rollout

See Also

Links


The Global Village Construction Set
Habitat CEB Press Cement Mixer Sawmill Bulldozer Backhoe
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  1. ↑ Template:Cite web
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