Jun 30, 2010· Crushed Stone or Crushed Concrete categories: , a porous structure that takes in and holds water The crushed stone on the other hand does not So if you use crushed concrete below your slab, its going to take up that water from the damp soil below, and its going to carry it right up to the underside of your slab - defeating the entire .
Cover the concrete slab with a plastic tarp to avoid flying piec Break up existing concrete into smaller pieces that are easier for you to handle Use a 12 lb sledgehammer for slabs no thicker than 4 inch For larger pieces, rent an electric jackhammer, which will make your job a lot easier, physically
Aug 07, 2010· The desired concrete crushing failures shown in Figs 124 and 125 can only be achieved if IC, CDC and PE debonding can be prevented from occurring before the design load to cause concrete crushing However, this may not always be possible; in which case, it may be necessary to design for either IC or CDC debonding to occur at the design load so that concrete crushing will not ,
What Size Crushed Stone Under Concrete Slab When working with concrete slabs it’s important to take the appropriate steps to ensure that it lasts for many years to come In order to get the most use out of your concrete slabs you need to add a layer of crushed stone beneath it g crushed stone under concrete serves several purposes and can provide the following benefits
Elder Demolition's concrete-crushing demolition equipment turns concrete slab into reusable gravel onsite The waste generated at Portland demolition and construction sites accounts for about 25 percent of the waste found in city landfills Much of this waste can be recycled or reused, including concrete The concrete crusher at Elder .
Every concrete slab should have a minimum slope of 1/8-inch per foot to keep water from pooling If the proper slope can’t be met down to the curb, angle the slab to one side or the other so the water runs off in the same direction as the natural grade of the yard
When working with concrete slabs, it’s important to take the appropriate steps to ensure that it lasts for many years to come In order to get the most use out of your concrete slabs, you need to add a layer of crushed stone beneath it firstPlacing crushed stone under concrete serves several purposes and can provide the following benefits
Concrete, which must be free of trash, wood, paper and other such materials, is collected from demolition sites and put through a crushing machine, often along with asphalt, bricks and rocks Reinforced concrete contains rebar and other metallic reinforcements, which are removed with magnets and recycled elsewhere
The most commonly used paving materials today are concrete slabs and paving ston Each option can provide different advantages depending on your needs Poured concrete slabs are often used for outdoor residential spaces due to their cost and ease of installation With the development of stamped concrete, homeowners also have options as far as .
Apr 28, 2014· Concrete may seem strong, but after many years, elements, and pressure, it will eventually crack So in order to make your concrete last as long as your money that went into it, adding a layer of crushed stone under a slab of concrete will increase the life of your investment Here are 3 reasons why a layer of crushed stone is important to the life of your concrete:
Mt Baker Mining and Metals’ designed the slab crusher to process thin material that was too wide for our regular crushers This is where the 6″ x 30″ slab crusher was born, a high volume crusher specifically designed to process granite slabs, concrete chunks and large pieces of asphalt
Concrete crushers are similar to rock crushers but are built specifically to deal with slabs of broken pavement and other types of concrete What will this permit do? Rock and concrete crushers produce dust, and blowing dust could be a nuisance
If a building is being demolished or renovated, it is likely that a concrete floor slab will need to be broken up It will need to be crushed into small pieces, which are easy to carry and could be reused elsewhere beneath roads, footpaths or driveways
Jul 12, 2017· Concrete is porous so you need to erect a concrete slab where drainage is not an issue Subsurface water can cause the ground the flex, creating stress cracks in the cement Properly preparing the subsurface helps to limit the potential for cracks in the finished concrete slab Preparation is the most important aspect of pouring a concrete slab
Oct 03, 2012· Crushing Concrete at the Landfill lakestv3 , New Shop Concrete Slab! - Duration: 38:34 , Lord Muck 20,301 views 8:07 curbside concrete crushing mobile mini crusher crushing concrete and .
Nov 02, 2007· Stone or crusher run should be easily compacted enough to surpport a slab if it's only 5-7" deep and you've driven over it with equipment Don't forget your ,
Apr 01, 2018· In most common concrete elements, such as columns, beams, slab-on-grades, and conventional suspended slabs, we start crushing cubes at 7 days The reason is that it is the time the cast concrete can be loaded, and we can proceed with the following construction activities, but only if the compressive test report at 7 days has passed the .
Pavers vs Concrete: Comparing the Costs and Benefits If you are considering replacing or adding a walkway, patio, or driveway to your outdoor living area, you may become befuddled over the myriad of choices you have Some paving materials are more cost-effective than others, and certain types are more durable and easier to maintain
Feb 13, 2006·
Crusher run is typically used underneath concrete slabs, patios, driveways, sidewalks, and walkways and ranges in sizes from ½” to 4” with stone dust How Much Crusher Run Do You Need? Crusher run is ordered by the ton Since crusher run weights approximately 2,500 lb per cubic yard, first determine the volume requirement of your project
Two Cylinder Concrete Crusher, Fits 40,000 to 55,000 LB Excavator, 2 year warranty on all attachments, Other sizes available on attachments, All attachments are ready to work! Updated: Tue, May 19, 2020 9:12 AM
The specification for the floor of a maintenance building called for a 6-inch slab thickness and concrete with a design compressive strength of 3000 psi The actual average cylinder strength for the floor concrete was 3630 psi Four months after the floor was placed, 10 cores were drilled, measured, and tested in compression
With small slabs of concrete, such as patio squares or air conditioner pads, you can also have one person pry up the slab a few inches, using a demolition bar, while another person strikes the slab with the hammer Prying up the slab has the same effect as digging underneath it
Confident in OTIE’s approach, the LA District modified OTIE’s contract to process an additional 350,000 tons of stockpiled large concrete slabs and subsequently crush 433,000 tons of processed concrete The processing and crushing of the remaining concrete material were performed concurrently, saving the Air Force over $600,000
I bought a 10″x16″ jaw crusher from Mt Baker Mining in February 2014 for crushing concrete and demolition debris I have installed a 37 hp gasoline motor on the crusher so it is mobile and I can haul it on the back of my truck The jaw crusher is working great! To say we are happy with what the jaw crusher can do is a serious understatement"
Crushed concrete is a very good substrate for a slab The key is to not have chunks so large that air pockets are created Maybe bring in a layer of sand to fill the voids and level things a bit A water rinse will help bring air out and compact the material
It will crush concrete, blocks, thermalite blocks, , tarmac, limestone, slabs, kerbstones and any other kind of rubble and will take a lump of concrete up to 600 x ,
If instead you pour your footings on either undisturbed soil or compacted crusher-run gravel, it's a good idea to include a few 4" pipes through the footings to connect your sub-slab crushed stone with the perforated pipe installed on the exterior side of the footings There is a caveat, however: if your perforated pipe is connected to a solid .
Leftover concrete is a valuable source of material, often used as a subbase layer for other projects Because recycling concrete can cost as much as $100 a ton, reusing old slabs is not only a greener alternative, it can help you source building material at a lower price Putting old building material to work only takes a few steps
Concrete recycling is the use of rubble from demolished concrete structur Recycling is cheaper and more ecological than trucking rubble to a landfill The process involves crushing the rubble and sorting the pieces by size The resulting aggregate can be used for revetments, road gravel, retaining walls, landscaping gravel, or raw material for new concrete
We have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site surveys, sample analysis, program design, installation, commissioning and maintenance guidance.