2A modified stone is ideal for construction projects where compaction and stability are essential. What Is Crushed Stone? Crushed stone is a construction aggregate, similar in appearance to gravel. A few types of rock that are most commonly used are argillite, granite, quartzite, and limestone.
How thick is a 2A modified stone?
The stone has sand and dust mixed in to provide a thick compaction base. Standard paver patios call for a base of 2A modified stone 4 inches thick. Click to see full answer. Just so, what is 2a modified stone used for?
What is 2A modified rock used for?
Common Uses: Blue 3/4" modified is a good material to top dress driveways or stone parking lots. Once compacted, 2A Modified provides a great finish surface or as an area ready to accept blacktop. 2A Modified is great for areas where compaction is desired such as in parking lots, roads or driveways. 2A has a top rock size of 1.5 inches.
What is PennDOT 2A modified stone?
2A modified has a top rock size of 1.5 to 2 inches. This aggregate also contains fine stones. PennDOT 2A stone is primarily a clean material. It will compact for stability, and it provides adequate drainage. Because of its size, 2A modified stone is best suited for surfaces and areas requiring compaction.
What is a 2B modified stone used for?
Most commonly 2B is used for driveway applications, shed bases, and drainage stones. This is the proper stone to be used in a French Drain. Other uses include base stone for retaining walls, as well as drainage stone behind retaining walls and under sheds. Considering this, what is 2a modified stone?
What is the difference between 2A and 2A modified stone?
These types of stone are very similar, so what's the difference between 2a and 2b stone? The main difference is that 2a has limestone dust mixed in with the stone.
What size stone is 2A?
2-inch2A stone: Also known as 2A crushed stone or 2A modified stone, this material is a mixture of crushed stone and coarse stone dust and derives its name from its 2-inch top size.
What is the difference between 2A and 2B stone?
2A MODIFIED is typically used when a solid compacted base is needed. Uses include driveways and under sheds. 2B STONE is used where drainage is needed. Uses include perforated pipe, placement under concrete to prevent frost heaving and cracking concrete.
What does 2A modified stone look like?
0:000:462A Modified Stone - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is used on paver bases you'll see the the dust in between air when you tamp it down itMoreThis is used on paver bases you'll see the the dust in between air when you tamp it down it compresses. And don't get it confused with 2b which is a clean rock it just rocks.
How much does 2A modified stone weigh?
Calculate 2A LimestoneCoverage (Square feet)400sq ftVolume (Cubic yards)2.5cu ydEstimated amount (Pounds)5,951lbEstimated amount (Tons)2.98tonAmount +15% compression3.42ton2 more rows
What is #2 stone used for?
The #2 crushed stone that Re-Agg supplies has multiple uses. Mostly, it is used as a construction aggregate in asphalt and concrete for road and highway work with or without a binder. Major uses of the cumulative crushed stone without a binder include railroad ballast #3 and road base.
What stone is best for driveways?
These are the best options for driveway surfaces gravel, because they are small stones combined with rock dust, which makes a more solid driving surface.Crushed Stone #411. It is crushed up #57 stone combined with rock dust. ... Quarry Process. ... Pea Gravel. ... Jersey Shore Gravel. ... Marble Chips. ... Blackstar or Blacktrap Rock.
What is 2A limestone?
2A Modified Limestone is a specific mixture of different grades of limestone, ranging from sand up to 2B size. When these different gradations come together, it makes for a very stable and compact surface that is comparable in hardness to concrete.
What is 2B clean stone?
2B is a Clean Crushed stone with an average size of 3/4". Used for drainage work and driveways when trying to bridge over wet soil areas.
How much is a ton of 2A stone?
Bulk Stone PricingStonePrice per ton2A$22.003A$30.002B$32.00#3$20.0037 more rows
What is the size of 2B stone?
2B Lime Stone - This is approximately 1-1/2 inch in size. It is most commonly used in driveways, for french drains or to back fill a wall stone installation.
How much 2B stone do I need?
Calculate 2B LimestoneCoverage (Square feet)400sq ftVolume (Cubic yards)2.5cu ydEstimated amount (Pounds)5,951lbEstimated amount (Tons)2.98tonAmount +15% compression3.42ton2 more rows
What is the difference between 2B and 2A?
The only difference between 2B and 2A is that the 2A has some Limestone dust (10) mixed in with the stone, and tends to compact better. For driveways with mud problems, consider putting a base of #3 or #4 Limestones with 2B or 2A Limestone on top. What is 3a modified stone?
What is 3A modified?
3A Modified It is a mixture of coarse stone and crushed stone dust. Will drain. Used for road base or under slab fill.
What is 2A modified stone?
2A Modified Stone. 2A Modified Stone has high compaction and thus little drainage. 2A modified stone is 2" and below. The stone has sand and dust mixed in to provide a thick compaction base. Standard paver patios call for a base of 2A modified stone 4 inches thick.
What is 2B stone?
2B is a Clean Crushed stone with an average size of 3/4". Used for drainage work and driveways when trying to bridge over wet soil areas.
What is 2B gravel?
The type of gravel known as 2B is composed of washed stones that work well for drainage. No stone is larger than 1.5 inches, and the smallest stones are 3/8 inch in diameter.
What is 2A modified?
2A Modified is great for areas where compaction is desired such as in parking lots, roads or driveways. 2A has a top rock size of 1.5 inches.
What is 2RC mod?
2RC is an open spec modifed that varies based upon current production. Our 2RC tends to be brown and while normally sized 3/4" and below the spec allows up to about a 2" size.
What is anti-skid material?
This material is the primary skid deterrent used by many state DOT’s and townships throughout the winter months. Several types and classifications of anti-skid are in use in Pennsylvania; utilizing a mixture of sands, limestone’s, slag, and cinders. The material will not compact because it is meant to be applied in a loose condition. Most anti-skids have a 3/8 to 1/2 inch topsize, and taper off to fine, dust-sized particles.
What is AASHTO #3?
AASHTO #3 stone is similar to AASHTO #1 but has a 3-inch topsize. It is also a bulky material but is somewhat easier to handle than the #1’s. It is used primarily in drainage situations. It is a clean material.
What size are gabion baskets?
These baskets make excellent retaining walls. Available in two sizes (Class A: 3 – 5 inches and Class B: 4 – 8 inches). They work very well for ditch lining in moderate flow areas. It is a clean material.
What is Portland cement sand?
This material is the primary fine aggregate used in the production of Portland cement concrete. It is a minus three eights material that will not compact because of its particular shape. Produced only at specific plants, sand is sized into two specific classifications: Mason sand, used in the production of masonry grout, and concrete sand which is used to make ready-mixed Concrete. Other applications include golf courses sand traps, recreational areas, beaches, walkways, and play areas.
What is 2RC2A modified?
2RC/2A Modified is a mixture of coarse stone and fine material. It is used as a road base and fill material. The fines in this material will be an earthen fine (dirt, silt, loam, clay). This material does not drain readily and has no structural coefficient. It is used where compaction and stability are a concern. 2RC/ 2A Modified is primarily a dirty material.
How big is a R3?
Classified into six categories, R3 through R8, the material ranges in size from 6 to 40 inches. Although not often used by homeowners, the material makes an excellent flow barrier in situations where creeks, streams, and rivers threaten property damage.
What is PA2A stone?
Below is a general description of stone sizes that are typically available from the quarries. PA2A is a mixture of coarse stone and crushed stone dust. It is used as a road base or an under-slab fill. It will drain and has a structural coefficient, making it ideal when stability and drainage are a concern.
What is road aggregate 101?
Road Aggregate 101: Gradation or distribution of different sized stones
What is AASHTO 57?
Multi-digit specs represent a blend of one or more of the ten basic specs (i.e. AASHTO 57 is a blend of AASHTO 5 and AASHTO 7) . AASHTO Specifications are technically open graded aggregate.
What is aggregate in construction?
Aggregate –a mixture of specific types and sizes of crushed rock or gravel. Generally used with a binder in pavements. Also used as road base and sub-base.
What is 3A stone?
3A modified stone is ideal for construction projects in areas with deep fill requirements where compaction is a priority.
What is 3A gravel?
PennDOT 3A stone is similar to 2A modified stone. However, 3A gravel features a slightly larger top rock size and a mixture of coarse stone and crushed stone dust. 3A stone is a relatively clean material that will compact and drain.
What Is Crushed Stone?
Crushed stone is a sustainable resource that can be produced with nearly any type of hard stone. The most common types of rock used are traprock, argillite, granite, washed gravel, quartzite and limestone. At Union Quarries, we use limestone to produce 3A gravel and other grades of crushed stone.
What is the required grade of gravel for PennDOT?
PennDOT requires gravel used for road construction to be durable, composed of at least 85% crush ed particles , and possess two or more faces resulting from fracture. Here are some standard commercial and residential applications for material of this grade:
What is the number to call Union Quarries?
Our staff is prepared to assist you, whether you’re a homeowner, contractor, developer or builder. Give us a call at (717) 249-5012 or get in touch with us online to talk about how we can set you up with the right selection of stone for your next project.
Is 3A gravel the right material?
If you’re planning on taking on any of these projects, 3A gravel might be the right material for you. Use our product calculator to help determine how much gravel you will need, then request a free quote from Union Quarries.
