GRANULAR SUBBASE is an aggregate material comprised of fractured pieces of Ordovician Dolomitic limestone that is blended with a determined amount of limestone fines. Because the material is a combination of larger pieces and fines, it compacts very well. It helps to create a stable base for applications when fabricating foundations, road sub-base, railroad sub-ballast, underlayment for stabilization, and the construction and maintenance of rural roadways.
blended with a specified amount of limestone fines. This product compacts
very well and creates stable bases for a variety of applications.
producing the finest aggregate available, from one of the
hardest 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.
into our aggregate production plant. Small aggregates are loaded
directly from plant to rail car, using a custom designed, state
of the art, loading system.
Granular Subbase - Ordovician Dolomitic Limestone
Granular Subbase
GRANULAR SUBBASE is also known as road rock, road stone, base stone, class A road stone, class A road rock, shoulder stone, surfacing stone, modified subbase, and granular subbase. Pattison produces GRANULAR SUBBASE in our state-of-the-art, jaw/cone crushing plant. Our crushing plant features compression crushing technology that limits fines generation and increase fractured faces.
Granular Subbase Quality
We understand that source quality makes a significant difference in the longevity of aggregates. Our facility in Clayton, Iowa features 9 ledges that include ordovician dolomitic limestone, limestone and sandstone. Pattison GRANULAR SUBBASE has been used in several projects conducted by Iowa State University. It has been designated as “high strength” stone and has demonstrated a longevity that exceeds most other quarry GRANULAR SUBBASE.
Pattison Granular Subbase Value
Qualitative testing has established that Pattison’s high strength GRANULAR SUBBASE saves substantial time and materials for end users. With our direct to rail transfer system, Road Rock products move quickly from production to rail cars with minimal handling. This reduces product degradation and lowers load out costs. Here’s 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.
Road Rock Certifications
| Certifications | Sizes | Tech Size | Material Type |
|---|---|---|---|
| Iowa DOT Class A Road Rock | 1" | 1" minus | Limestone & Dolomitic Limestone |
| Missouri DOT | 1" 3/4" | 1" minus 3/4" minus | Limestone & Dolomitic Limestone |
| Minnesota DOT | 1 ½ “ | 1 ½” minus | Limestone & Dolomitic Limestone |
| 3/4" | 3/4" Minus | Limestone & Dolomitic Limestone |
Road Rock Properties
| Property | Value |
|---|---|
| Abrasion | 27% to 42% |
| "C" Freeze | 1 to 4 |
| Del. materials | 0.0% to .8% |
| P.I. Limits | NP |
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 GRANULAR SUBBASE.
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 GRANULAR SUBBASE 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