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Concrete Blocks......


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#1 Mr Wilkes

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Posted 27 July 2014 - 08:40 am

Ive just been given a lot of concrete blocks..the guy said they are the sort that goes inbetween concrete joists to make a floor . what i want to know is..are they for internal use only or could i use em outside in the british weather ?.


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#2 bobcullen79

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Posted 27 July 2014 - 09:00 am

Sounds like you got padstones. They should be harder than normal concrete blocks as they are denser, given the job they have to do. Not sure if you can build with them though. Similar? http://www.supremeco...eral/padstones/


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#3 Mr Wilkes

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Posted 27 July 2014 - 09:32 am

Cheers bob...they are just a bit lighter than the pack of 7n concrete blocks i have, i suppose if i paint them they should be ok.


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#4 chid21

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Posted 28 July 2014 - 04:34 pm

You use normal 4" concrete blocks inbetween "T" beams (concrete joists).

You might have 6" blocks already so thats why the ones youve been given look lighter, and if they are 4" block they can be used for building with
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#5 irishnut

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Posted 28 July 2014 - 10:06 pm

they might be aerated blocks, but they don't like like normal blocks, look smoother.

 

or could be pumice, although they probably wouldn't be right for t beams


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#6 Mr Wilkes

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Posted 29 July 2014 - 11:18 am

They are darker in colour and arnt as heavy as the 7n blocks.

 

7n on the right.

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#7 Tiercel

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Posted 29 July 2014 - 12:04 pm

They could be filled with polystyrene inside for insulation of the floor, have you broken one to see?

 

TC


Edited by tiercel, 29 July 2014 - 12:04 pm.


#8 chid21

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Posted 29 July 2014 - 01:03 pm

Lightweight block ? Still suitable for building with , just break one and see if it's concrete throughout or hollow

#9 Qbgrey

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Posted 29 July 2014 - 09:46 pm

fenlights mate.all the same for walls .some block n beam blocks are the lighter celcon type but also some jobs specify the 7n blocks.all the same walls.floor etc.fine for walls.
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#10 Mr Wilkes

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Posted 30 July 2014 - 12:22 pm

Just broke one and they are solid...thanks for info guys..ill start building. :thumbs:



#11 TOPPER

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Posted 01 August 2014 - 04:48 pm

IF IN DOUDT RENDER THEM AND PAINT THEM


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#12 mickmck

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Posted 02 August 2014 - 07:55 pm

they will be 5 newton blocks , you can build with em  :thumbs:


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#13 wilbur foxhound

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Posted 05 August 2014 - 07:17 pm

They are what we call breeze blocks there not as strong as the heavy dense blocks what you are calling 7n they will be ok to build with but you will have to render them because if it rains then freezes they will start to crumble, p.s. thats if youre gonna build them outside, atb wf
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#14 mark@mbb

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Posted 15 August 2014 - 07:53 pm

The pictures you have put up are of solid 100mm concrete blocks and they will be a strong as any you can buy the one which go in the floors are called pot and beam and are normally used in apartment blocks the ones you show in the picture are normally used in wall construction above the dpc and are usually rendered if used outside hope this helps


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#15 j j m

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Posted 24 August 2014 - 09:34 am

look good bud






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