Pattison UNWASHED ASPHALT STONE is produced using the highest quality ordovician dolomitic limestone. It is manufactured to specific physical properties and sizes. Because the material is manufactured from high grade ordovician dolomitic limestone, it contains minimal deleterious materials. When Pattison UNWASHED ASPHALT STONE is used, the need for costly additives is dramatically reduced. Pattison UNWASHED ASPHALT STONE has exceptional friction factor, improving traction and life expectancy, freeze/thaw impacts, and reduced maintenance costs.
It can be used in interstate highway paving, on bridge decks and
overlays. It is approved by IADOT, MODOT, and MNDOT
It produces the finest aggregates from one of the oldest and
most competent limestone ledges in all of Iowa.
product of years of design, development, innovation, and
the diligent efforts of some of the finest engineers in the
aggregate production industry.
directly into our aggregate production plant. Small aggregates
are loaded from the stock pile to rail car by our state-of-the-art
direct transfer system.
Unwashed Asphalt Stone - Ordovician Dolomitic Limestone
Unwashed Asphalt Stone
Also known as fine aggregate, concrete sand, manufactured sand, ManSand, asphalt material and washed asphalt chips, Pattison produces these products in our state-of-the-art, jaw/cone crushing plant featuring compression crushing technology. It is is designed to increase fractured faces.
Unwashed Asphalt Stone Certifications
Pattison high quality Ordovician Dolomitic Limestone is used in Department of Transportation interstates and highways, hot mix asphalt roads, chip overlays, ultra thin overlays, microsurfacing, and chip seal roads.
Exceptional Quality Source Material
This material requires specific physical properties. Pattison’s quarries feature a variety of ledges that yield materials that meet our customer’s specific needs. Pattison’s UNWASHED ASPHALT STONE is produced from selected ledges of high quality rock which are durable and contain minimal deleterious material. As a result, Pattison’s UNWASHED ASPHALT STONE outperforms materials from non-Ordovician limestone quarries on freeze thaw, abrasion, specific gravity and absorption tests.
Unwashed Asphalt Stone Production
Pattison UNWASHED ASPHALT STONE is of exceptional quality and are approved by the Departments of Transportation in Iowa, Missouri, and Minnesota They are the optimal choice aggregate for asphalt and concrete material projects.
Because Pattison uses a direct to rail transfer system, these products move quickly from production to rail with minimal handling. This reduces product degradation and handling costs. Here is what Wikipedia has to say
More about Ordovician Dolomitic Limestone
When it comes to rock, age really matters. Ordovician Dolomitic Limestone is some of the highest quality, hardest and most durable anywhere in Iowa. Ordovocian formations are only found in the northeast portion of Iowa. Pattison’s Clayton, IA quarry site is right in the middle of it.
Fine Aggregate Certifications
| Certifications | Sizes | Tech Size | Material Type |
|---|---|---|---|
| IADOT Fine Agg. IADOT #1 IADOT #21 IADOT #22 IADOT #23 IADOT #38 | Asphalt Mansand Concrete Mansand 3/8" Chips Fine Slurry Mixture Coarse Slurry Mixture 1/4" Chips Microsurfacing | 3/8" x #30 3/8" x #30 3/8" x 1/8" 1/4" minus 1/4" minus 1/4" x #8 3/8” x #50 | Dolomitic Limestone |
| MNDOT Fine Agg. FA 2.5 & FA 3 FA-3-1/2 Gradation D Gradation A FA-1 and FA-2 | Asphalt Mansand Concrete Mansand 1/4" Chips 3/8" Chips Fine Slurry Mixture Coarse Slurry Mixture 3/16th" Chips | 3/8" x #30 3/8" x #30 1/4" x #8 3/8" x 1/8" 1/4" minus 1/4" minus #4 x #16 | Dolomitic Limestone |
| MODOT Fine Agg. Grade A1,B1,C Grade A2 & B2 | Asphalt Mansand Concrete Mansand 3/8" Chips 1/4" Chips | 3/8" x #30 3/8" x #30 3/8" x 1/8" 1/4" x #8 | Dolomitic Limestone |
Fine Aggregate Properties
| Property | Value |
|---|---|
| Abrasion | 26% to 31% |
| Insoluble Residue | 1.53% to 4.29% |
| Shale | 0% |
State of the art Aggregate Plant
Pattison’s newly installed Cone Crusher and production plant is state-of-the-art, producing some of the highest quality Ordovician Dolomitic Limestone UNWASHED ASPHALT STONE.
Material is separated into various required sizes without inducing fractures, while yielding a refined individual rack shape that is the most desirable for tight compaction and stability. Pattison’s new aggregate plant produces UNWASHED ASPHALT STONE of exceptional quality.
Logistics second to none
Pattison recently completed its Rail Spur project, extending multiple rail lines directly into our new state-of-the-art aggregate production plant!.
Pattison’s advanced direct to rail loadout system coupled with the Pattison rail spur allows aggregate products to be loaded directly from the production plant on to enclosed rail ore cars for delivery. Eliminating excess handling saves costs, and insures a higher quality product.
Pattison High Quality Aggregates and Proppants
Pattison produces high quality ordovician dolomitic limestone Aggregates and silica proppants. Our Clayton IA, quarry contains multiple limestone ledges yielding material with a variety of properties that meet various requirements. Our products are certified for use by multiple state Departments of Transportation, and the FAA.
Revetment Stone
Asphalt Stone
Ballast Stone
Concrete Stone
Clean Stone
Fine Aggregate
RoadRock
Proppants
Specialty Products
Contact our Aggregate Sales Team for more information!
Contact our Aggregate Team Now!
Our quarry is located in Clayton, IA. We are one of the only sources of Aggregates and Proppants that can load directly to Rail, Truck or Barge from the same facility! Our logistic & delivery systems out pace our competitors. We’d love to hear from you!
Contact information
Aggregate Team
: (563) 964-0106
: AggInfo@pattisonsand.com
Main Office
701 1st Street
Clayton, IA 52049
: (563) 964-2860
: info@pattisonsand.com
Operations Office
24312 Mississippi Rd., Clayton, IA 52049
Hours of operation
Office Open Monday – Friday: 8am to 4pm
Operating Hours – 24/7