finishing concrete sidewalk curbs

Posted by on August 29, 2008, 12:40 am

I noticed that the forms on concrete curbs are pulled off fairly
quickly. How do they finish these? Are they rubbed or brushed with a
concrete slurry to get the bug holes out etc? Also, how soon after
pouring can the curb forms be pulled.....
Thanks
John

Posted by SteveBell on August 29, 2008, 1:16 am

calypso5@suddenlink.net wrote:

> I noticed that the forms on concrete curbs are pulled off fairly
> quickly. How do they finish these? Are they rubbed or brushed with a
> concrete slurry to get the bug holes out etc? Also, how soon after
> pouring can the curb forms be pulled.....

It depends on the type of concrete used, and how moist it is. If you
make it really soupy, it takes longer to get hard enough to stand on
its own (and the resulting concrete is weak).

I watched a crew put in a driveway apron a couple of weeks ago. They
did the pour, levelled, screeded, textured, and put in relief grooves,
all in an hour or two. Then they took off the forms and went away. This
was in Fort Worth, on a 100°F day, with clear skies.

I've used quick-setting concrete for patching, and it gets too hard to
work in about ten minutes. Common bagged concrete for posts takes a few
hours to dry hard enough that the post won't wiggle.

--
Steve Bell
New Life Home Improvement
Arlington, TX

Posted by DanG on August 29, 2008, 7:21 am

Much curb work is done with no forms on the front. It is typical
to bring the truck at a 2" slump, and "stack" the curb areas, then
wet the truck down to a 4 or 5 to pour the flat work. All
concrete that is not left in forms is a timing game that requires
knowledge of concrete, temperature, humidity, and wind. There is
no single answer for stripping forms.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net

>I noticed that the forms on concrete curbs are pulled off fairly
> quickly. How do they finish these? Are they rubbed or brushed
> with a
> concrete slurry to get the bug holes out etc? Also, how soon
> after
> pouring can the curb forms be pulled.....
> Thanks
> John

Posted by on August 29, 2008, 11:04 am

> Much curb work is done with no forms on the front. =A0It is typical
> to bring the truck at a 2" slump, and "stack" the curb areas, then
> wet the truck down to a 4 or 5 to pour the flat work. =A0All
> concrete that is not left in forms is a timing game that requires
> knowledge of concrete, temperature, humidity, and wind. =A0There is
> no single answer for stripping forms.
> --
> ______________________________
> Keep the whole world singing . . . .
> DanG =A0(remove the sevens)
> dgriff...@7cox.net

> >I noticed that the forms on concrete curbs are pulled off fairly
> > quickly. =A0How do they finish these? =A0Are they rubbed or brushed
> > with a
> > concrete slurry to get the bug holes out etc? =A0Also, how soon
> > after
> > pouring can the curb forms be pulled.....
> > Thanks
> > John- Hide quoted text -

> - Show quoted text -

Thanks for the responses Steve and Dan. I have done slabs, foundation
walls and retaining walls in the past. Pouring curbs without a form
sounds interesting Dan. Has anyone here pulled a "formed" up curb
after the concrete begins to set and if so how did you finish the face
of the curb?
John

Posted by DanG on August 29, 2008, 10:46 pm

Wood float, flip water on a brush, curb brush for finish.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net

> Much curb work is done with no forms on the front. It is typical
> to bring the truck at a 2" slump, and "stack" the curb areas,
> then
> wet the truck down to a 4 or 5 to pour the flat work. All
> concrete that is not left in forms is a timing game that
> requires
> knowledge of concrete, temperature, humidity, and wind. There is
> no single answer for stripping forms.
> --
> ______________________________
> Keep the whole world singing . . . .
> DanG (remove the sevens)
> dgriff...@7cox.net

> >I noticed that the forms on concrete curbs are pulled off
> >fairly
> > quickly. How do they finish these? Are they rubbed or brushed
> > with a
> > concrete slurry to get the bug holes out etc? Also, how soon
> > after
> > pouring can the curb forms be pulled.....
> > Thanks
> > John- Hide quoted text -

> - Show quoted text -

Thanks for the responses Steve and Dan. I have done slabs,
foundation
walls and retaining walls in the past. Pouring curbs without a
form
sounds interesting Dan. Has anyone here pulled a "formed" up
curb
after the concrete begins to set and if so how did you finish the
face
of the curb?
John

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