Grain Store concrete floor

180 mm thick RC 40 ,8mm mesh ( correctly placed on high chair spacers)RC 40 min 380 kg straight opc cement 100 slump with 0.55 cement water ratio and no WRA is mix we use and happy with
Polythene in below? What's it like to finish in a hot spell? Only asking simply because of the MCC.

Does the lack of WRA leave it any more workable in heat?
 

Forever Fendt

Member
Location
Derbyshire
Yes Dpm if it’s inside , if you have the water reducer in and have specified a cement water ratio it allows them to reduce cement content as there will not be as much water to meet your slump requirements , just phoning and asking for a price on rc 45 concrete is not enough as they can meet this spec in various ways do it won’t be like for like
 

D14

Member
What spec of concrete are people putting in grain shed floors and views on mesh yes or no?
Last one we did had a base 0.5 metres thick so we could hit subsoil and then 350mm of RC40 with fibres because we put underfloor tunnels in so had to concrete to their level. Completely over the top but due to the shed sighting and then the available laterals it was still far far cheaper than putting in a wooden drive over floor and 150mm of concrete.
 

LancsBeef

Member
Hi sorry to jump in just interested regarding the concrete mix being discussed, what’s the best mix for outside yard areas? Interested to learn about this wra and altering the mix, think some we have done previously was altered mid job but wasn’t sure
 

snarling bee

Member
Arable Farmer
Location
Bedfordshire
If you are thinking of an air tunnel, needs to be 250mm thick under it and for about a meter each side. Sounds a lot but easier to do it now than afterwards!!
 

Forever Fendt

Member
Location
Derbyshire
Hi sorry to jump in just interested regarding the concrete mix being discussed, what’s the best mix for outside yard areas? Interested to learn about this wra and altering the mix, think some we have done previously was altered mid job but wasn’t sure
We did a 600 m drive for a plant dealers who sell 500/600 machines a year almost 20 years ago it’s 8-9 “ thick with 8 mm mesh and joints every 11 m , it’s well worn but not a crack anywhere we used pav2 air entrained 1 layer of mesh and poly fibres as it was done in summer to avoid plastic shrinkage cracks
 

LancsBeef

Member
Would you recommend no wra in the mix? And what would be the best cement to water ratio? Sorry for the questions but trying to learn why we have had variations in concrete delivered from same company, just wondering if they have unknowingly to myself cheapened it in some way.
 
We did a 600 m drive for a plant dealers who sell 500/600 machines a year almost 20 years ago it’s 8-9 “ thick with 8 mm mesh and joints every 11 m , it’s well worn but not a crack anywhere we used pav2 air entrained 1 layer of mesh and poly fibres as it was done in summer to avoid plastic shrinkage cracks
Sounds like a good job tbh, HGV spec to me is 225mm, 2 layers A393 or A252 and PAV2 or c28/35 cem1, wra, ae, s3

Generally only specify dc2 for foundations on c32/40
 
Would you recommend no wra in the mix? And what would be the best cement to water ratio? Sorry for the questions but trying to learn why we have had variations in concrete delivered from same company, just wondering if they have unknowingly to myself cheapened it in some way.
Is there a colour difference?
Were 2 plants supplying the job?
Was it a pump mix? And they changed away from oversanded to make it cheaper?
 

LancsBeef

Member
Colour has dried different, batches were supposed to be same mix couple of months apart, same mix ex but second batch didn't go off or finish as well, even though weather was actually better for it!
 
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In conversation with a soil health pioneer

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In conversation with a soil health pioneer

Written by Janet Hughes



https://www.buzzsprout.com/1657363/8311877-janet-hughes-and-gabe-brown-the-six-principles-of-soil-health.mp3

In this month's Future Farming podcast, Janet Hughes talks to Gabe Brown.

Gabe has been named one of the twenty-five most influential agricultural leaders in the United States. He farms at...
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