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how small should concrete be crushed

MOT Type 1 Crushed Concrete Aggregate Axtell Type 1 or MOT here we are describing the Crushed Concrete variation of the Department of Transport approved granular subbase material Art Concrete Howto 1b Mixes What mixes to use for various small concrete

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how small should concrete be crushed
how small should concrete be crushed

Forming a compacted sub base small pieces of concrete are laid down as the lower layer in highways driveways roads patios and even in redimix concrete foundations though crushed stone is typically preferred beneath such foundations

how small should concrete be crushed
how small should concrete be crushed

After the concrete is broken up it is usually run through a secondary impactor and is then screened to remove dirt and particles and to separate the large and small aggregate Additional processes and equipment such as water flotation separators and magnets may also be used to remove specific elements from the crushed concrete

how small should concrete be crushed
how small should concrete be crushed

Aug 11 2018 · Aggregate may be natural manufactured or recycled It includes gravel crushed stone sand slag recycled concrete and geosynthetic aggregates For a good concrete mix aggregates need to be clean hard strong particles free of absorbed chemicals or coatings of clay and other fine materials that could cause the deterioration of concrete

how small should concrete be crushed
how small should concrete be crushed

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

how small should concrete be crushed
how small should concrete be crushed

Apr 12 2018 · Most home improvement stores sell premixed concrete As the mixture already contains sand and gravel you only need to add water The smaller bags of premixed concrete are perfect for doityourself and small home projects Premixed concrete is often used for fortifying fence posts or railings

how small should concrete be crushed
how small should concrete be crushed

Excavate the soil to a depth of 8 inches allowing 4 inches for the gravel base and 4 inches for the concrete slab The soil should be graded or sloped so the excavation sites center is

how small should concrete be crushed
how small should concrete be crushed

Keep forms straight Set the forms at the proper height before bringing in the last lift That way you can use the forms themselves as a guide for the final base height Every concrete slab should have a minimum slope of 18 in per foot to keep water from pooling If the proper slope can’t be met down to

how small should concrete be crushed
how small should concrete be crushed

Jun 22 2015 · My plan is to get crushed concrete and top with a layer of small decorative stone Still much less than gravel and other choices I do not have a dump truck and will need to rent a bobcat So I guess I am asking you is your crushed concrete rebinding just from the rain and use of the road putting pressure on the concrete or is it staying

how small should concrete be crushed
how small should concrete be crushed

This should be a freedraining crushed rock material commonly 34 minus with less than 3 fines material passing 200 sieve and specified gradation so it compact into a tight dense layer which will bear load without moving or further compacting

how small should concrete be crushed
how small should concrete be crushed

Nov 09 2018 · The truth is the extra cost of concrete does not make it a better foundation A gravel base is an ideal foundation for a small 6×8 shed or a large 14×40 portable garage we’ve already listed the benefits above We install pressure treated 4×6 perimeters around all our gravel bases to make sure the stone stays in place over the life of your shed

how small should concrete be crushed
how small should concrete be crushed

concrete or sawn into hardened concrete Control joints should penetrate roughly ¼ of the slab thickness and be spaced every 6 to 8 in 4thick slab work Wide driveways and patios may require longitudinal control joints down their centers Expansion joints help dissipate the expansion and contraction forces that pass between adjoining structures

how small should concrete be crushed
how small should concrete be crushed

Jun 30 2011 · The hardened concrete is crushed and graded to ASTM C33 67 The mix used for the Green Mile Project is composed of 30 CCA and 70 virgin limestone aggregate The mix includes a 40 replacement of portland cement with SCMs and uses

how small should concrete be crushed
how small should concrete be crushed

Answer Not sure Explanation Many factors dictate aggregate size including method of placement regional availability of materials admixtures etc In order to minimize cracking it is ideal to use a mix design containing aggregates ranging from natural sand to 1

how small should concrete be crushed
how small should concrete be crushed

Crushed stone is a material that is typically used as a base or underlayment upon which the stuff that actually shows for example the concrete of a patio will rest Guessing is rarely a good solution to such dilemmas when undertaking a big project so lets look at

how small should concrete be crushed
how small should concrete be crushed

The smallest size of landscaping gravel contains pieces of crushed rock no larger than 38inch The smallest bits break down to a sandlike powder When small gravel is compacted the stone powder and small pieces form an almost solid base Small gravel is useful in an area with sandy soil because it keeps the surface material from sinking

how small should concrete be crushed
how small should concrete be crushed

Fastsetting concrete A blend of fastsetting cement sand and gravel this concrete is ideal for setting post or pouring slabs that need to be ready to use quickly This mix usually sets in about 2040 minutes

how small should concrete be crushed
how small should concrete be crushed

Jun 30 2010 · But below that you could use crushed concrete Brick however and concrete block for that matter I would not use Brick is much softer than concrete and concrete block is also much more porous than poured concrete I also have doubts that they will be able to crush this material to a small enough size on site

how small should concrete be crushed
how small should concrete be crushed

Jun 14 2018 · A front concrete driveway is not a luxury it’s a necessity That doesn’t mean that your completed drive can’t offer a luxurious look and feel that will improve the value of your entire property though For many homeowners this means working wit

how small should concrete be crushed
how small should concrete be crushed

posts are set 18 below grade on a 2 cap of cement over a few inches of well compacted gravel holes were all about 27 or so 2x6 girder runs level at the top very level all the way around around base ok so basically I have 55 to grade from bottom of 2x6 girder to top of board and the Ive got posts set in concrete at 24 from the top

how small should concrete be crushed
how small should concrete be crushed

It can be crushed and used as a rock base below new concrete or asphalt in a parking lot driveway or roadway or used as a fill material Concrete Lasts Longer than Asphalt This is tricky The length of how long Concrete or Asphalt lasts truly depends on how it is built what sort of trafficwear it will receive and the climate in which it is built

how small should concrete be crushed
how small should concrete be crushed

Mar 18 2011 · Yes the crushed concrete will be just like using gravel To make it better you should do some prep work before spreading the crushed concrete Shape the road with a slight crown in it and rent a compactor to help solidify the ground before the crushed concrete is applied

how small should concrete be crushed
how small should concrete be crushed

Aug 27 2019 · Consider alternative materials for your drive such as brick compacted crushed rock or concrete pavers Use caution when allowing concrete delivery trucks on to your property Concrete trucks often weigh in excess of 65000 lbs

how small should concrete be crushed
how small should concrete be crushed

Mar 04 2013 · Sand has a much higher capillary draw than gravel and can seep into fill perforated drain pipes etc Directing roof drains well away from the house is the first line of defense but I personally wouldnt feel right about not having perimeter drain at the footing as well even with sand that seems to drain well on its own

how small should concrete be crushed
how small should concrete be crushed

Concrete cant be relayered like asphalt and should be sealed every two years The finish can vary widely depending on the installer Oil stains are tough to remove colored concrete fades over time Because concrete cracks when not supported poor drainage and unstable soil can reduce life span to just five to eight years

how small should concrete be crushed
how small should concrete be crushed

Mar 27 2018 · The fill that goes in must be compacted and no more than 24″ deep for sand or gravel or 8″ deep for earth In addition you need a base course of 4″ of clean graded sand gravel crushed stone or slag under 2″ when the slab is below grade unless the existing soil is exempted by the soils report

how small should concrete be crushed
how small should concrete be crushed

To obtain high strength concrete coarse aggregate size is usually held to a maximum size of 19 mm but additional cement is required for the additional surface area The fine aggregate can generally contain less material passing 300 um and 150 um sieve because of the higher cement content

how small should concrete be crushed
how small should concrete be crushed

How to hand mix concrete so it delivers maximum strength and durability Mixing isnt complicated and when done well the concrete should last a lifetime Protect your skin and eyes The cement in concrete is caustic and can cause burns if it gets on your skin Mixing bags of concrete isnt

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