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-   -   Newly Poured Driveway - Issue? (http://www.diychatroom.com/f105/newly-poured-driveway-issue-176225/)

black95fiveoh 04-03-2013 09:39 PM

Newly Poured Driveway - Issue?
 
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Hi all, newbie here! I have a newly poured driveway, which is approximately 2 months old. I have just recently noticed what I would call ripples, running through part of the concrete. Any idea what these would be from or think I should be concerned? I have done a little research and the best I could come up with is rebar vibration. I am not confident in this research so I wanted to see if I could get any other opinions. I live in the Midwest and it was poured during temperatures right around the freezing mark, not sure if this has anything to do with it. A ground heater was used for 3 days prior to the pour and blankets were utilized after the pour.

Any ideas, thoughts, suggestions?

cleveman 04-03-2013 09:44 PM

I've never seen that or heard of it, but that does look like a grid. Do you know if the flatwork company used re-bar? Have you asked them about the look of it?

Is there a problem, other than you don't like the way it looks?

We usually do a light-medium brush finish perpendicular to the length. I can't see very well what type of finish you got.

jomama45 04-03-2013 09:53 PM

That looks like marks left from the blankets to me. Not sure from the picture if they're just topical, or if they have some depth. One of a few reasons I won't even think of pouring a driveway in the middle of winter unless of course it's only temporary..............

black95fiveoh 04-03-2013 10:03 PM

From what I know, rebar was used. It is a light brushed finish perpendicular to the pour, as you describe. At this point the only issue is I really don't care for how it looks, but as long as it isn't going to affect the longevity of the concrete, I could probably live with it.

black95fiveoh 04-03-2013 10:06 PM

Quote:

Originally Posted by jomama45 (Post 1151915)
That looks like marks left from the blankets to me. Not sure from the picture if they're just topical, or if they have some depth. One of a few reasons I won't even think of pouring a driveway in the middle of winter unless of course it's only temporary..............


The marks are raised, which is what led me to believe it was caused by something below the surface, like rebar.

joed 04-03-2013 10:16 PM

Turn the picture right side up.

black95fiveoh 04-03-2013 10:18 PM

Quote:

Originally Posted by joed (Post 1151933)
Turn the picture right side up.

I am not sure why it rotated, slightly annoying I know. I will try and post a better pic.

Hardway 04-03-2013 10:21 PM

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It sure don't look good!:(

black95fiveoh 04-03-2013 10:27 PM

Quote:

Originally Posted by Hardway (Post 1151937)
It sure don't look good!:(

Not at all

:confused1:

cleveman 04-03-2013 10:50 PM

I don't care for the surface very much.

You must have a problem with aggregate in your area. We have the same problem here as well. The aggregage pops.

But the surface looks almost like it got washed out. Hard to tell from the photo.

Thanks for rotating the photo by the way.

stadry 04-04-2013 06:08 AM

anyone explain ' rebar vibration ' to moi ? :huh:

other'n cosmetic ( which to my bride, nagzilla, is enough reason for her to bomb the n koreans ), looks fine & sounds as if it was properly plac'd,,, like jomama, i'm not wild about placing in cold weather but not happy about hot weather either :no:

concreteman 04-04-2013 07:29 AM

Quote:

Originally Posted by black95fiveoh (Post 1151927)
The marks are raised, which is what led me to believe it was caused by something below the surface, like rebar.

If the marks are raised I would lean towards the rebar being to close to the surface. When rebar or wire is to close to the surface it tends to raise the crete ever so slightly when you wipe out the the slab.

Canarywood1 04-04-2013 11:32 AM

Quote:

Originally Posted by jomama45 (Post 1151915)
That looks like marks left from the blankets to me. Not sure from the picture if they're just topical, or if they have some depth. One of a few reasons I won't even think of pouring a driveway in the middle of winter unless of course it's only temporary..............



I agree with jomama,and his reasoning about pouring flat work in freezing weather, this is a good example of why not to do it.

cleveman 04-04-2013 10:59 PM

Those also look like something I might leave behind with my trowel-on-a-stick. This would also explain why they end abruptly. The finishers broomed over the area where you don't see the marks, and left other areas unbroomed.

Nailbags 04-05-2013 01:44 AM

That is rebar! They might have tried to float it in or they did not set at the right depth, or did not scree it right. what ever the problem they need to come out with a jack hammer and redo your driveway.


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