What are the Side Effects of Paving Asphalt over Concrete?

Jun 24, 2014· A concrete pavement that moves will damage any asphalt overlay over time. If you are looking to add asphalt over concrete, you will need to make sure you have a stable concrete surface below, with no expannsion joint shifting, to make a proper base for overlay. Concrete Expansion Over Time May Cause Reflective Cracks

Pouring New Driveway On Top Of Old Driveway - Concrete ...

Jan 31, 2015· I have another crazy/unique pour. I'm GC'ing my house (2nd house) and need to connect my garage pad to my old driveway (it's over 600' of concrete, so starting over is not an option). The garage pad will connect to a new pour which terminates at a curved 3' wide cut on one corner, a curb on another corner and another 3' wide cut going down the ...

Adding Cement Mix to Gravel Driveway | Hunker

Adding Cement Mix to Gravel Driveway By Brenda Priddy. SAVE; Laying a concrete driveway over an existing gravel one is possible, but it is not generally recommended. The kind of gravel that is intended to go under cement is typically a smaller grade than what is used for gravel driveways. However, if the gravel in your driveway is small enough ...

How To Pour A New Concrete Slab Over An Older Damage Slab

However most contractor will simply come out and place a rebar mesh on small pedestals above the existing floor and then pour enough concrete to level the area and cover the rebar mesh. They will consider the existing slab structurally sound and just pour the new slab as if they were pouring over a gravel …

Gravel on top of concrete patio? - MoneySavingExpert.com ...

Nov 09, 2009· Gravel on top of concrete patio? 11th Sep 09 at 6:58 AM #1 I don't have much money to do much with my garden at the moment and the majority of it is concrete - I wanted to put coloured gravel down over the top for a different look but have been told that you can't just put gravel on top of concrete.

3 Driveway Pros & Cons: Gravel vs. Asphalt Paving

Aug 19, 2014· This helpful guide will get you on the path to choosing the best driveway for your home and will provide pros and cons for two of the most common driveway surfaces – gravel and asphalt. Gravel Driveways. Gravel is a common surface material for driveways throughout the United States.

How to Lay a Gravel Shed Foundation - An Everyday ...

If you don't do this, the gravel will continue to settle after you put the shed on it. Use the right type of gravel, avoid pea gravel as this type of gravel cannot be properly compacted. If you plan to add a concrete pad over the gravel foundation, you must dig down at least 8 inches to allow for 4 inches of gravel and 4 inches of poured concrete.

How to Resurface Pea Gravel Concrete | eHow

Concrete is more than just cement and water mixed together. For thick installations, concrete actually consists of small pieces of stone, commonly pea gravel, pebbles the approximate size of (large) peas that comprise the majority of the concrete surface. When pea gravel concrete becomes ...

Compact Fill Under Slab - Ask the Builder

Compact Fill Under Slab - Concrete bends and breaks. Use self-compacting fill. Water helps compact. Concrete block ledges on footer. ... Mother Nature, over time, does an amazing job of compacting soils. Rainwater plays an important part of this process. ... This gravel is the size of small green peas and it naturally compacts as it's put into ...

Does anybody use sand as a base before they pour concrete ...

As with all material, it has to be placed correctly and compacted properly. Sand needs to remain damp as well as other material before placement of the concrete. If you want to build a road, use gravel, but this does not mean you will not have issues. No one can predict the outcome of the harding of concrete. As they say, it will get hard and ...

The Best Way to Add Concrete to Existing Concrete - wikiHow

Mar 28, 2019· How to Add Concrete to Existing Concrete. No matter how strong a slab of concrete seems, it will wear out over time. Imperfections form when concrete hardens or sinks into the ground. Adding fresh concrete is a common way to level out old...

Walkways Made With Dry Concrete & Water | eHow

Walkways Made With Dry Concrete & Water. An easy way to make a garden path or informal walkway is to simply dump dry concrete on the ground and water it with a water hose. There are a few tricks to making it look good, but it really is a pretty easy way to make a path through the backyard. Wear old clothes because concrete work is pretty messy.

Can You Put Blacktop Over Gravel? | Midland Asphalt Paving

Can you blacktop over gravel? It's more of a straightforward process than what you may think. In short, yes, you can blacktop over gravel. To convert a gravel driveway to asphalt, there are a few steps that need to be followed, but the project can be completed relatively easily. How to Convert Gravel …

Pouring Concrete On Gravel Driveway - Concrete & Paving ...

Jan 02, 2008· You can pour directly over the gravel but I would recommend a thin layer of sand if possible to cover the dirt you referred to.Wet it slightly before you pour, dirt tends to suck the moisture out of the concrete quickly causing a fast set, weak concrete problem.

The Disadvantages of Pouring Concrete Over Existing ...

A well-poured concrete slab with a deep, sturdy foundation can last for 30 to 40 years. Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab's lifespan. The condition of the existing slab is the primary factor that determines how long the new concrete will last.

Pavers Over Concrete: Can It Be Done? | Concrete Pavers Guide

Jul 21, 2010· Many people want to install pavers over concrete. Perhaps they have an old installation built on a concrete slab, or perhaps they want to avoid doing the work necessary to rip up an old concrete patio or driveway. Installing a base of aggregate may be the best option, but perhaps the best is not needed in this situation.

Gravel over concrete? | Welcome to the Homesteading Today ...

Aug 07, 2014· As a retired contractor, putting stone, gravel, and pea gravel over concrete is not recommended. And pea gravel is the most hated thing in a homeowners yard. Pea gravel is used around pipes and usually underground. It is not for walking on! bonnie in indiana, Aug 3, …

Ensure a Long-lasting Concrete Garage Floor

Good concrete slabs in garages will hold up to all of the weight they need to bear, through hot and cold weather, and for many long years with little if any evidence of cracks. People have garage slabs like that, as some that were poured more than 50 years ago are still as solid today as it …

gravel under concrete slab? is it absolutely required ...

Its about 3.75 cu yards of crete, or like $400 It will cost $100 for gravel to fill in 2", but my crete is still only a little cheaper, and it will be a thinner slab. I could put gravel in, say 2" and 3.5" of concrete over that or just full 5.5" of crete or I could do lot of gravel and a 2" top coat over that with a bunch of steel and fibers,

Subgrades & Subbases for Concrete Slabs - The Concrete Network

Subgrades and Subbases for Concrete Slabs ... Subbase—this is a layer of gravel on top of the subgrade; Base (or base course)—this is the layer of material on top of the subbase and directly under the slab ... then to not let them get wet (by providing drainage). But as the ground beneath the slab dries over time, it will shrink and the ...

How to Cover a Concrete Patio in Pea Gravel | DoItYourself.com

The gravel is rounded like small peas, which is how it received its name. It is easy to walk on and provides a nice decorative element for your concrete patio. You will need to purchase several pounds of pea gravel, sand and landscaping fabric to cover a concrete patio in pea gravel. Prepare Patio for Pea Gravel

Mixing concrete powder into the gravel - driveway

Apr 15, 2005· This is the "binder" in the concrete and composes 7-15% of the total concrete weight. The rest is aggregate: sand, gravel, etc. When you order concrete delivered by truck, they ask "How many sacks?" This means how many (usually 80 lb.) sacks of Portland Cement do you want mixed into each cubic yard of the concrete.

What to use to harden up a gravel driveway - Home ...

I have a gravel driveway uphill. I put new 1/2" rock gravel in last fall because of washout. I also spread concrete and sprayed it, but it didn't take. I have a 05 Harley Davidson Road King custom that I can't get up or down the driveway without almost dumping it. Can I put anything on it to harden it up enough to get my bike up and down?