Concrete flow table

STANDARD: EN 12350-5

General description and specifi cations

54-C0151/A  Concrete  flow  table consists  of  a double  wooden  table measuring  700x700 mm  and hinged at one side. The top table is covered with a fl at metal plate 2 mm thick, inscribed, and protected against corrosion.

The galvanised steel cone has a top 130 mm dia., base 200 mm dia., and is 200 mm high. Supplied complete with wooden tamping rod.

Weight appox: 25 Kg

Spare parts
54-C0151/1 Flow cone top 130 mm dia., base 200 mm   1 Flow cone top 130 mm dia., base 200 mm dia., 200 mm high
54-C0151/2 Wooden tamping rod  2 Wooden tamping rod

When fresh concrete is delivered to a site by a truck mixer it is sometimes necessary to check its consistence before pouring it into formwork.
If  the  consistence  is  not  correct,  the  concrete  will  not have  the  desired  qualities  once  it  has  set,  particularly  the desired strength. If the concrete is too pasty, it may result in cavities within the concrete which leads to corrosion of the rebar,  eventually  leading  to  the  formation  of  cracks  which will  accelerate  the  whole  process,  rather  like  insufficient concrete  cover.  Cavities  will  also  lower  the  stress  the concrete is able to support.

Conducting the test
-  The fl owtable is wetted.
-  The  upside  down  funnel  is  placed  on  the  flowtable  and fi lled with fresh concrete.
-  The funnel is lifted up, allowing the concrete to fl ow.
-  The  flowtable  is  then  lifted  up  several  centimeters  and then dropped, causing the concrete fl ow a little bit further.

-  After  this  the  diameter  of  the  concrete is measured.  The result is called "Ausbreitmaß" in German.

The upside down funnel fi lled with concrete prior to lifting.	The diameter of the resulting fl ow is measured. These  images  show  a  flow  test  with  very  fluid  concrete  for  a  special application which made compression impossible.