Malcolm, I had assumed 4" was sufficient. If it needs 6", I will comply, but at $675 per 22ton load, it hurts. :) Also, when you say - [top dress the 6" below the slab with a drainable fill] - you are talking about the 3/4" gravel between the ground and the concrete, or in my case between the ground and Fomular 250 25 psi foam and then concrete.Web
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Do you need to compact the aggregate before you pour concrete over pea gravel? To answer your question—yes, as this will minimize the chance of the gravel shifting, which can cause cracks just like drastic soil settling. Here are a few tips to help you properly compact pea gravel under concrete slab for your dream …
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Moving a 500 Lb Load on a Dolly Over Loose Gravel. westes Zone 9b California SF Bay. last year. I need to move a massive 500-pound concrete container over loose gravel. I purchased an "all-terrain" dolly rated to 1500 pounds, shown in the photo below. The problem is going to be how to move the wheels over a loose gravel path.Web
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Use a hand tamper to pack the sand tight. Place a carpenter's level on the sand to check for level. Add or remove sand as needed to adjust the sand base for level. Lay the concrete pavers on the sand bed with 1 to 2 inches of space between each paver. Use a rubber mallet to tap the pavers and embed them in the sand base layer.Web
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Step 4: Tamper Dirt. After clearing the area from rocks and other hard objects we can start tampering the dirt. We tamper to create a hard compact surface that will be less likely to move over time. Loose dirt will move and that's not what we want with a concrete patio over the top of it.Web
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When pouring concrete over existing concrete, it's common to use a specialized concrete mix designed for thinner pours like a 4000 psi concrete mix with 3/8 peastone. These mixes often contain smaller aggregate sizes, higher cement content, and additives such as polymers, water-reducers, or fibers to improve bonding and performance.Web
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2. Lay Down A Base Layer Of Rock. Pea gravel is round and tends to roll, so laying down a base layer of a more coarse, angular rock can help stabilize the pea gravel. After excavating the area, pour in about three inches of a base layer of crushed rock. The recommended base layer is #3 or #57 crushed stone.Web
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Outdoor Portable Tile is a great solution for flooring over gravel, as it is designed specifically to easily install over dirt, grass, gravel, stone, sand, concrete, or pavement. It is constructed using durable and rigid plastic, and it features a clip together design that makes a great DIY project.Web
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2-part question: 1) I'm building a 2-car garage with upstairs apartment in zone 4, 26′ x 28′. getting different opinions on whether the vapor barrier -6ml plastic- should be under the 4" of gravel or on top of the gravel directly under slab? Some are saying it is not good to pour concrete right on plastic, although this seems to be the ...Web
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Alternatives to Putting Gravel On Concrete. While putting gravel over concrete is not a good idea, some alternatives can give your concrete a new and improved look without creating a safety hazard. Gravel Grid. If you want a gravel driveway, one option is a gravel grid.A gravel grid is made of heavy-duty plastic shaped like a honeycomb …Web
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0. you must first grind the pea gravel down to get a "level" surface. Clean thoroghly and let dry. apply bonding agent and let cure as per directions. Resurface with several thin coats or use a stampable overlay mix, about 3/8 to 1/2 inch. I recommend Butterfield T1000 Stampable Overlay.Web
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There is nothing to bind these loose materials. When they are placed over a granular sub-base, as shown on the Gravels Construction page, the gravels can 'bed-in' to the sub-base surface, and so become lightly bound and unlikely to roll or move. On a hard surface, there is no opportunity to 'bed in' - the material just sits on top of the surface.Web
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Concrete can be combined with various substances in different building tasks. As individual materials, placing concrete over gravel is acceptable, especially for …Web
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brushing CHEAP concrete onto a gravel driveway (adding strength and resilience) Yes, you can put Quikrete over gravel. Quikrete is a concrete mix, and you can use it to create a concrete slab or walkway over a gravel base. To do this, you will need to excavate the gravel to approximately 4-6 inches and tamp it down so that it is level and firm.Web
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The cost of these driveways will likely climb a bit when the commodity price of oil increases. While gravel makes for a cheaper driveway surface, tar-and-chip creates a harder, more durable surface, though it is considerably less durable than concrete. Tar-and-chip paving can last as long as 10 years vs. 40 years or so for concrete.Web
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Concrete Too Wet. This is probably the easiest concrete mistake to make because properly mixed concrete looks too dry to flow and trowel properly. Don't be fooled. You should be able to form concrete into a four-inch diameter, four-inch tall …Web
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bonnie in indiana. 449 posts · Joined 2002. #5 · Aug 3, 2014. call a contractor and you will get free advice and a free estimate. 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 …Web
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A: A 50 lb bag of QUIKRETE All-Purpose Gravel yields approximately 0.5 cubic feet. A 10 inch diameter hole by 36 inches deep with a 4X4 post set into the full depth of the hole will require 1.3 cubic feet of gravel, or 3 bag at 50 lb each of QUIKRETE All-Purpose Gravel. Yields will vary depending on waste, uneven subgrade, compaction, etc.Web
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Jun 21, 2020 at 14:58 – Jun 25, 2020 at 13:28 Date modified (newest first) A vibrator will get excellent penetration of regular concrete into the broken …Web
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No, you cannot sprinkle dry cement over gravel. Cement needs to be mixed with other materials such as sand and aggregate (e. g. gravel, crushed stone, etc. ) along with water in order to form concrete. Adding dry cement directly to gravel will not result in a strong bond, and the gravel will not stick together. To make concrete, you need to mix ...Web
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Date: 3/1/2010. Residual Fracture Toughness of Normal- and High-Strength Gravel Concrete after Heating to 600 °C. Publication: Materials Journal. Date: 5/1/2002. Punching Shear Strength Analysis of Reinforced Concrete Flat Plates With Spandrel Beams. Publication: Structural Journal.Web
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Using gravel for a base under concrete is important for several reasons, which contribute to the overall durability, stability, and longevity of the concrete …Web
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In masonry and concrete work, this type of sand is mostly utilized. River sand has a softer feel and better-shaped particles overall. It is less expensive because it is naturally produced. Conclusion. Yes, you can pour concrete over sand because it is a great option if you need a foundation that allows water to absorb beneath it.Web
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For soil cement the CRUSHED gravel should have poper mix of fines to larger pieces to make it as dense as possible. Add the proper amount of cement and water and mix well by some mechanical means, smooth to grade and pack it. The mix is not a slurry and is very hard to tell from damp gravel. A seal coat over the top will also help for …Web
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The top 6 to 12 inches of backfill beneath the slab should be filled with gravel or crushed rock. Portland cement, natural soil, and water are mixed to form a hard, semi-rigid concrete pavement. It is possible to lay a concrete driveway over an existing gravel driveway, but this is not generally recommended.Web
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concrete, in construction, structural material consisting of a hard, chemically inert particulate substance, known as aggregate (usually sand and gravel), that is bonded together by cement and water. Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance more closely ...Web
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Pouring concrete over gravel is often called creating a "gravel base" or a "gravel pad. Page Contents Can You Pour Concrete Over Gravel? 1. Proper Drainage …Web
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You will need 3 inches of gravel under a concrete slab that is 4 inches thick. More gravel is better, but 3 inches is the minimum amount of gravel you should have with a 4" slab. Use ¾" washed and screened gravel, then compact it to level. If you choose to add more gravel, which is never a bad idea, you'll have to compact every 5" or ...Web
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Short answer: A vibrator will get excellent penetration of regular concrete into the broken rock. Adding more water to concrete mix reduces the strength. I poured a car park addition to a drive way using broken concrete from a sidewalk . The concrete minimum thickness was 2 " or less .Web
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Pour concrete over a solid, well-drained base. Because concrete slabs "float" on the soil, soft ground or voids underneath may cause unsupported areas to crack under heavy weight like vehicles. Pack about 4 in. of sand or gravel over clay and other poorly draining soils to provide even support.Web
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Pour the Concrete. Buy bags of concrete designed for building retaining walls by stacking the bags and pouring water over them. You can also use quick-drying concrete mix. Be sure to wear gloves and a mask. Break open the bags and pour the dry concrete directly into the trench and fill the trench to the top. It should be at least two inches deep.Web
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With proper grading and a proper gravel bed there shouldn't be issue. Concrete cures via chemical reaction that also produces heat—it's not simply wait for the water contained in the mix to dry. In fact, during hot …Web
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