07:43PM | 09/14/03
Member Since: 12/07/02
8 lifetime posts
I'm noticing the cracks in my driveway are progressively worsening. Today while I was untangling electrical cord I noticed that when the plug hit the driveway it sounded hollow underneath. Does anyone know what might be the cause of this? Not knowing any better a sinkhole came to mind. The cracks in the same area have gotten much worse this year and there are even fragments of concrete within the crack in one spot. Any advice about the cracks and hollow sound would be appreciated. Thanks.

Glenn Good

01:18PM | 09/15/03
Member Since: 09/10/03
314 lifetime posts
There is any number of possibilities as to the cause. Anything from poor construction, to poor quality concrete, to concrete poured during freezing temperatures and left unprotected, etc.

One common occurrence I have found several times in this situation is when a drain line (usually a storm water drain of some sort) runs under the concrete and has a hole or a bad joint in it allowing water to exit and re-enter the hole taking some of the dirt with it. This will cause a void under the concrete over time and until it is repaired will continue to worsen. This is only one of many possibilities though. If there is a downspout drain or any other type of drain that you know of in the immediate vicinity it would be a very distinct possibility.



08:46AM | 04/27/04
Member Since: 04/26/04
3 lifetime posts
Oneof the tests for professional concrete restoration projects is called a 'chain drag'. They drag a heavy chain over cement and listen for a hollow sound. These areas are then outlined, cut out and new concrete poured. The reason is that the rebar in the concrete has started to rust which puts tremendous psi pressure on the cement popping it out and creating pockets where the oxidization can get out. Sounds like you might consider replacing the driveway if the spots are many and large. If you're talking one or two small spots, it might make sense to drill out these areas and use patching compounds to fix the areas.

good luck !


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Repurpose birthday hats to create a string of lanterns for your porch, patio, or garden. Cut the tip of the cone, punch h... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon