setting concrete in cold weather
 

I have a few posts to set in concrete and the weather forcast says it will
be about minus 3 overnight. If I crack on and do the posts in the morning
will this be a problem?

Adam

setting concrete in cold weather
 

"ARWadsworth" wrote in message
k...
I have a few posts to set in concrete and the weather forcast says it will
be about minus 3 overnight. If I crack on and do the posts in the morning
will this be a problem?


Unlikely to be a problem, the ground is warmer than the surface. A few cm
down is usually frost free.
Just cover it with something to be sure.

--
Mike W

setting concrete in cold weather
 

On Fri, 02 Feb 2007 17:21:22 GMT, visionset wrote:

"ARWadsworth" wrote in message
k...
I have a few posts to set in concrete and the weather forcast says it will
be about minus 3 overnight. If I crack on and do the posts in the morning
will this be a problem?


Unlikely to be a problem, the ground is warmer than the surface. A few cm
down is usually frost free.
Just cover it with something to be sure.

Some years ago the place I was working had a legal requirement to
have a new building commissioned by Dec 31. Much to the annoyance
of the (software!) manager in charge of this work, the builders
said that they were unable to pour concrete when the temperature
was below 2 degrees 2 (that's +2) as it wouldn't set properly.

Personally I'd cover the proposed site tonight (before the frost) and
do the work and then put some insulation over the concrete. The temp.
is supposed to drop due to clear skies, so the insulation will help
keep the ground around the work warm.

Pete

--
.................................................. .........................
.. never trust a man who, when left alone ...... Pete Lynch .
.. in a room with a tea cosy ...... Marlow, England .
.. doesn't try it on (Billy Connolly) .....................................

setting concrete in cold weather
 

On 2 Feb, 17:40, Peter Lynch wrote:
On Fri, 02 Feb 2007 17:21:22 GMT, visionset wrote:
"ARWadsworth" wrote in message
. uk...

I have a few posts to set in concrete and the weather forcast says it will
be about minus 3 overnight. If I crack on and do the posts in the morning
will this be a problem?

Unlikely to be a problem, the ground is warmer than the surface. A few cm
down is usually frost free.
Just cover it with something to be sure.

Some years ago the place I was working had a legal requirement to
have a new building commissioned by Dec 31. Much to the annoyance
of the (software!) manager in charge of this work, the builders
said that they were unable to pour concrete when the temperature
was below 2 degrees 2 (that's +2) as it wouldn't set properly.

Personally I'd cover the proposed site tonight (before the frost) and
do the work and then put some insulation over the concrete. The temp.
is supposed to drop due to clear skies, so the insulation will help
keep the ground around the work warm.

Pete

if you use clear sheet poly, it'll act as a solar panel during the
day, and the crete will store the heat overnight.


NT

setting concrete in cold weather
 

visionset wrote:
"ARWadsworth" wrote in message
k...
I have a few posts to set in concrete and the weather forcast says it will
be about minus 3 overnight. If I crack on and do the posts in the morning
will this be a problem?


Unlikely to be a problem, the ground is warmer than the surface. A few cm
down is usually frost free.
Just cover it with something to be sure.

Or use FEB wintamix in it..that will stop it freezing. which is the only
crucial issue.

setting concrete in cold weather
 

"Owain" wrote in message
...
ARWadsworth wrote:
I have a few posts to set in concrete and the weather forcast says it
will be about minus 3 overnight. If I crack on and do the posts in the
morning will this be a problem?

I'd suggest letting the ground warm up first, and - as it's only a few
posts - make the concrete with hot water, and insulate (carrier bags
filled with straw, or something, over the top).

It may be obvious from the foregoing suggestion that I really know very
little about concrete!


I set them at 8 this morning. No frost was present and it will be a good 16
hours before the temp hits zero degrees. I will stick some covering on later
though

Adam

setting concrete in cold weather
 

ARWadsworth wrote:

"Owain" wrote in message
...
ARWadsworth wrote:
I have a few posts to set in concrete and the weather forcast says it
will be about minus 3 overnight. If I crack on and do the posts in
the morning will this be a problem?

I'd suggest letting the ground warm up first, and - as it's only a few
posts - make the concrete with hot water, and insulate (carrier bags
filled with straw, or something, over the top).

It may be obvious from the foregoing suggestion that I really know
very little about concrete!


I set them at 8 this morning. No frost was present and it will be a good
16 hours before the temp hits zero degrees. I will stick some covering
on later though
Frost will split wet porous brick,. The idea is that the concrete is
stronger than porous brick, by the time the frost gets to it ...;-)

Xould be a mater of 2-3 days at these temps.


Adam