08:00AM | 04/02/02
Member Since: 03/12/01
40 lifetime posts
We are planning on having someone install a new concrete driveway this spring/summer.
We are in the midwest with lots of freeze/thaw.
How thick should it be? Should we use rebar?
What other advice do you have?


10:52AM | 04/02/02
For a driveway in your area I would recommend this:
1. Make sure the sub grade is solid. Best way to test it is drive a large heavily loaded truck on it and any areas that are moving when the weight of the truck rolls over it should be removed.
2. Fill any low spots in the sub grade with ABC stone and compact it with a mechanical tamp or vibrating roller. Keep the stone damp when compacting. Apply water if needed. (#57 washed stone could be used and would not require tamping but it is also more porous and will tend to hold water and could deteriorate the sub grade later on.)
3. Many contractors will use 4” of concrete for a driveway to save money, but I strongly suggest you use 5” with 6 x 6 10 x 10 welded wire reinforcement. Be sure the concrete finishers pull this wire up into the concrete and do not just pour over the top of it. For additional insurance against unwanted cracking you can have fibers added to the concrete at the plant.
4. The concrete should be poured at a 3” – 4” slump maximum. (Specify this when the concrete is ordered and do not allow the concrete finishers to add excessive amounts of water after it arrives on site.) If the concrete is too wet when it is placed, it will shrink more when drying, and thus be more likely to crack.
5. Cut control joints in the wet concrete every 20’ and place an expansion joint every 40’.
Immediately after the concrete is finished apply a dissipating concrete sealer to the surface to insure it will not dry out too fast. The sealer will last about 30 days holding in the moisture to insure the concrete will cure to it’s proper strength and then it will dissipate.

[This message has been edited by GlennG (edited April 02, 2002).]



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

All bookworms need a good bookmark that inspires them to keep reading. To make this colorful bookmark, cut a rectangular p... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... 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... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... 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... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... 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... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon