Jun 30, 2011· For the purpose of this article the term crushed concrete aggregate (CCA) is defined as returned concrete and recycled concrete aggregate clean enough to be used as aggregate for new concrete. Recycled concrete aggregate (RCA) refers to crushed concrete and other materials suitable for use as fill and compactible fill.
Apr 15, 2005· 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 longevity.
Jan 06, 2016· Many contractors prefer to use ½" or ¾" crushed stone as a subbase material before laying concrete. Since it's durable, it is also regularly used for backfill, drainage solutions, or pipe bedding. Larger crushed stone, such as CA6 or CA5, is typically used for parking lots, driveways, shoulder stone, or railroad ballast.
If you use concrete it's still the dirt around the concrete that supports the fence; you have just added 30 pounds of concrete to the bottom of it. If your soil has good percolation and water can settle away quickly (as I do where I am in Wisconsin) I prefer to use sand most of the way up and bout 4 - 6 inches of dirt on top of the sand.
Jun 10, 2012· Can I still use hardened bags of Quikrete cement to make cement or are they no longer viable for cement making? I have about 2 doz. bags of Quikrete cement that have been sitting in my garage and have become hard in the bags. So in essence I have …
Mar 13, 2013· We want to use the barn as a antiques/furniture shop. Nothing super fancy though. Just Craigslist type of stuff for now. I am thinking about digging it out and putting down crushed limestone gravel, so it packs well. I don't want to do concrete because of the expense and it is overkill. Any of you have a crushed limestone floor in a building?
So, it would include gravel, whether it is crushed or rounded, as well as all sorts of other crushed and naturally occurring aggregates. It can also include secondary aggregates such as crushed brick, slag, slate waste or recycled concrete. The full definition for a coarse aggregate is set out in BS EN 12620:2013 Aggregates for concrete.
Dec 14, 2009· I've got an opened bag of cement must be about three or four months old now. It has spoiled - the loose stuff has turned into little balls and the bulk of it feels very hard to the touch. I guess I shouldn't use it for making concrete but I wondered if there's any use I could put it to?
Then once you have it all prepared and ready to pour. Make sure you tell the concrete company what your base is and they will make sure the mix of water to concrete is correct. If your asking how I know. When we had to have our ramps built, we used old concrete as a filler in the bottom with river rock to sand going around it all.
If this matters, the ground is very hard (Arizona) -, can i use crushed cement that is gone hard. can i use crushed cement that is gone hard - crusherasia Crushed concrete as base - Ground Trades Xchange - a I hope someone can ease my fears We went the cheaper way and ordered crushed concrete for our brick paver .
Nov 14, 2009· Best Answer: You can use it as a large, rounded brick, or as a relatively stable landfill, or as a rock for a breakwater or levee. Or you can bring it to a facility that crushes used concrete from demolished buildings and roads to use for new construction.
May 25, 2008· Can old bags of cement that has gone hard in its original bag be used in a sand/cement mix? ... This happened to me a while ago with a bag of concrete, I opened the bag got my hammer & crushed it to almost powder again then mix it with water & worked fine. I needed it for fence posts 6 months still looks good.
Uses of recycled concrete. Smaller pieces of concrete are used as gravel for new construction projects. Sub-base gravel is laid down as the lowest layer in a road, with fresh concrete or asphalt poured over it. The US Federal Highway Administration may use techniques such as these to build new highways from the materials of old highways. Crushed recycled concrete can also be used as the dry ...
Reusing concrete can a good way to reduce construction costs while providing some benefits to the environment. Recycled concrete not only stays out of landfills, but it also replaces other materials such as gravel that must otherwise be mined and transported for use.
Crushed Stone Patio Base. Not only can you use crushed stone itself for the ground surface, it also is one of the most reliable base materials you can use under a patio surface of pavers or slabs. If you dig a patio base of about 10 inches below surface, lay and level a flat base with sand and crushed stone and level it with a compactor, you ...
DO use aggregate that's in compliance with ASTM C 33, "Standard Specifications for Concrete Aggregates." Aggregates must be sound, clean, hard, durable, and free of excessive fines or contaminates that can affect cement hydration or disrupt the paste-aggregate bond. DON'T exceed limits for deleterious material content in fine and coarse ...
The 6 Most Popular Shed Foundations – Reviewed. ... foundation kit. These kits can go on gravel, but typically they get put straight on the ground. The KITS DO NEED TO BE INSTALLED ON A FLAT, ... They do work best on flat surfaces; altering these kits to a sloped surface can be hard …
How to Use Hardened Concrete in a Sack ... Sift through the powder cement after removing the hard outer layer to remove any remaining chunks of hardened cement. You can use mix this dry powder according to package directions for your original project or store in a dry location until ready to use.
The only thing you have to buy is some cement. You will also need to borrow or rent a tiller and a roller. With these ingredients and a little labor, you can create a smooth, durable and dust-free surface. Soil-cement may not work well in soils that have a high clay content or a lot of organic content, but it is suitable for most soil types.
Crushed aggregate is produced by crushing quarry rock, boulders, cobbles, or large-size gravel. Recycled concrete is a viable source of aggregate and has been satisfactorily used in granular subbases, soil-cement, and in new concrete. After harvesting, aggregate is processed: crushed, screened, and washed to obtain proper cleanliness and gradation.
With crushed gravel driveways, a base with good drainage is important, so make sure the individual installing your crushed gravel driveway pays attention to it, or you could be in for problems. Nonetheless, crushed gravel driveways do generally require less repair or maintenance jobs for you.
What to use to harden up a gravel driveway. Ask Question ... Go look at railroad ballast, you want that stuff, aka "crushed stone", very jaggy and will interlock when tamped down. ... what is called "fines". You spread it out, tamp it down with a compactor and after a short time it compacts to a very hard surface. You can still dig it up with ...
can i use crushed cement that is gone hard. can i use crushed cement that is gone hard . Crushed Limestone Uses & Benefits Braen Stone. Jun 28, 2017 Crushed Limestone Uses. You''d be amazed at the number of ways that crushed limestone can be used for either functional or decorative purposes, including: Making Concrete – Concrete is a . ...
The kind of cement used to lay over gravel is important as well. Typically, most cement driveway projects use a mixture of Portland cement, sand and water. Make sure to follow the specification "ASTM C-94" by the American Standards for Testing and Materials. This guide will show what kinds of cement are best in your area.
ShapeCrete mix is an easy-to-use, high performance, shape-able concrete that can be rolled and molded, pushed and poured into any shape imaginable. It's fun and versatile, like clay, yet becomes rock-hard and durable in about 24 hours without oven-baking or kiln-firing.
Q&A / Flagstone Patio on Crushed Stone Outdoor | Patio text: Tim Carter. DEAR TIM: I intend to install a flagstone patio in the very near future and have been told I can place it on compacted crushed limestone that contains screenings. What are screenings and will this method work? The person giving the advice said the crushed limestone beneath the flagstones would eventually harden like concrete.
Yes you can design a concrete structure to last 100 years. I'd probably compare this structure to a masonry only structure. But depending on the structure you're probably wasting material by not using reinforced concrete which will cut lifespan to 60-75 years typically, but drastically reduces material and cost, as well as increases usable space.
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