NATURALPAVE SEMI-PERMANENT ROAD SURFACES
The strength of asphalt roads, while saving up to 70% of the cost.

The environmentally-positive alternative for semi-permanent unpaved roads, from the leading innovators in soil stabilization.

Midwest Can Work With the Most Extreme Soil Conditions

Difficult soils are no match for our patented marginal soil products.

Soils and their properties vary significantly around the globe. While some provide exceptional construction properties, others do not. These are referred to as marginal soils and when it comes to soil stabilization, need to be treated differently. Marginal soils are deemed not suitable for construction projects due to the lack of necessary physical properties required for construction applications. These types of soils can include loose sands, heavy clays, silts and organics.

To make these soils effective for use in construction, they require removal, modification or stabilization. Stabilization is the typically the most cost-effective alternative of these three options. Marginal soils can pose workability issues, inadequate strength and stability, moisture issues and dramatic volumetric fluctuations leading to severe and costly failures without proper treatment.

Midwest has mastered the ability to successfully stabilize even the most problematic conditions. Whatever the native soil, our team will use our proprietary 4D process to engineer a solution using our patented product mix.

ENGINEERED FOR PROVEN BENEFITS

Economical, purposeful, long lasting and aesthetically pleasing roads.

As the industry’s soil stabilization technology leader, Midwest is driven to deliver superior performance while protecting the natural environment. This is Midwest’s “Third Way,” representing significant improvements over old-fashioned asphalt or gravel alternatives. We construct secondary, unpaved roads that perform like paved roads, yet cost less and can last longer.

Learn more about the advantages of a NaturalPave road by downloading or viewing the full collection of soil stabilization techniques above — including test data, case histories and testimonials, construction and completed project photos and videos.

REAL-WORLD SUCCESSES, IN THE U.S. AND AROUND THE WORLD.
Tough roads for a short growing season.

For the largest producer of beet sugar in the U.S., Midwest NaturalPave transformed loosely-composed roads into robust surfaces that will withstand any weather and operating conditions without degradation. Midwest's soil stabilization techniques produced a "sweet" solution.

Dust was all around the power tower.

Strong desert wind and rain caused a remote tower’s foundation to erode and become unstable, making it a safety hazard. Midwest dramatically reduced dust, rutting, sinking and overall road surface deterioration. An increase in loadbearing strength of the sandy soil gave the foundation maximum weatherability to rain, wind and ultraviolet light.

HOW DOES IT WORK?

STEP 1

STEP 2

STEP 3

STEP 4

STEP 5

STEP 1

GRADE EXISTING DETERIORATED ASPHALT OR UNPAVED ROADWAYS.

  • Areas to receive Midwest’s NaturalPave stabilization emulsion shall be graded and scarified to the minimum depth and width of intended placement area.
  • The soil shall be scarified by tilling, disking or ripping to achieve uniform preparation of the soil to the planned minimum depth.
  • The soil should be damp at the time of scarification to reduce dust and aid in pulverization.
  • Surface gravel and stones are to be removed or if possible thoroughly mixed with surrounding soils to obtain a homogenous blend.

STEP 2

BLEND GRINDINGS INTO SUB-BASE.

  • Apply proprietary formula to the desired area at the instructed rate with a pressurized spray system and thoroughly blend into the soil until the homogenous mixture is obtained to established depth.
  • Mixing shall be done with commercialized mixing equipment or motor grader (blade mixing).

STEP 3

BLEND PRODUCT

  • The blending method utilized shall result in a uniformly treated mixture at optimum moisture content.
  • The amount of area mixed each day should be limited to that which the contractor can thoroughly mix and compact within that work day.

STEP 4

PERFORM COMPACTION

  • Begin initial compaction as soon as installation will bear roller without undue displacement, to be conducted with pneumatic roller or soil compactor.
  • Generally, no more than two passes are required for initial compaction.
  • Begin final compaction as soon as possible following initial compaction, using 5- to 10-ton double drum roller.
  • Roll surface in final compaction as required, to eliminate roller marks and remove any surface marks from the initial compaction.
  • Make number of passes necessary to achieve an aesthetically pleasing unyielding surface and 95% optimum compaction.
  • When optimum moisture and specified compaction are achieved, the surface needs to cure prior to final applications.

STEP 5

APPLY TOPCOAT

  • When surface has dried, typically 24-48 hours after final compaction, apply seal coats at specified application rate.
  • Seal coats may be applied in multiple coats, allowing surface to dry between applications, to prevent running and to insure uniform coverage.
SAVE MORE WITH EVERY MILE OF ROAD

The old ways cost more in equipment, personnel and material. Compare what it takes to build only one mile to doing so with the “Third Way.”

Conventional Roadbuilding Methods
  • Grader
  • Roller
  • Dump Trucks with Gravel
  • Water Trucks
  • Batch Plant
  • Earthmovers
  • Paver
  • Asphalt Trucks
  • XX People
Midwest NaturalPave
  • Grader
  • Roller
  • Tractor with Tiller
  • Spray Truck
  • 5 People

That’s just a single mile. Think about the sheer magnitude of materials, equipment, time and manpower for every mile of road stabilization you need. With conventional, old methods it becomes a rough road of money lost when compared to Midwest’s “Third Way” — the new way of NaturalPave that utilizes native or in-place soils to save money and effort associated with hauling non-native materials.

THE ADVANTAGES ARE AS STRONG AS THE ROAD SURFACE ITSELF

More strength and longevity, for less than conventional methods. The “Third Way” from Midwest increases loading capacity and structural integrity while reducing harmful moisture penetration. New roadbuilding chemistry in NaturalPave offers advanced performance and significant cost savings over ordinary, old-fashioned methods.

INTRESOIL

MIDWEST NATURALPAVE INTRESOIL® STABILIZES CLAY-BASED ROADS BY FIGHTING MOISTURE

Long-term stabilization is possible, even while reducing construction time, materials and maintenance the natural way.

Moisture is the enemy. It weakens and breaks apart clay and silt road foundations. Midwest NaturalPave Intresoil is the antidote. It increases bearing and shear strength, stabilizing the problematic material (which means the thickness of the treated layer or overlying pavement layers can be reduced). Best yet, Intresoil is a permanent treatment that will not leach out.

The extra costs associated with potential damage compels a careful process that minimizes or eliminates this risk. In areas where swelling (also known as “expansive soils”) is likely, laws may require soil testing prior to construction. Swelling potential indicates the degree of expansion when the soil is wetted, while swelling pressure indicates the amount of pressure the wet soil exerts on an adjacent solid object.

When expansive soils become wet and expand, damage such as cracking and heaving of the road surface can occur. The risks associated with expansive soils can be significantly reduced through best construction practices like proper ground preparation, to decrease the tendency of soils to swell when wet by changing the clay chemistry and mineralogy to make it less expansive.

“It’s shrinkage!”

A cycle between two problems converge to create a larger problem:

PROBLEM 1: Swelling — Positive water molecules attach to clay, pushing the particles apart.

PROBLEM 2: Shrinking — When the clay dries out, cracks form on the surface.

COMBINATION PROBLEM: As these two issues happen in a cycle, this combines to weaken the road foundation.

Why does this happen? The inherent chemistry of the material. Clay is a natural material composed primarily of fine-grain minerals, in fact the finest of soil particles. Its tiny particles have plastic and adhesive properties, as well as small voids and pores that may retain water. In this condition, it tends to expand and shrink, which can lead to settlement, cracking, rutting, heaving and other forms of costly deterioration.

Clay has a high dry strength, but low strength when too much water is present. Due to its minimal permeability, water has difficulty flowing through the tight pattern created by the individual particles, causing it to soften, liquify and loosen.

THE SOLUTION TO PROBLEM 1, 2 AND THEIR COMBINATION

Midwest NaturalPave Intresoil changes the clay chemistry and mineralogy, making it less expansive and serving as proactive ground preparation prior to road construction. The name is based on “intra,” which means within or inside (such as intravenous), symbolizing how Intresoil works within the soil structure for fundamental and lasting performance improvement. This is also known as enhancing the engineering quality of the clay foundation, crucial because a better foundation means a stronger surface.

NaturalPave Intresoil reduces both swelling and shrinking by altering the ion exchange capacity of the clay to reduce the negative charge of the clay. Absorbed water is removed; density is maximized; and compaction is increased. Less effort is needed for compaction and to create a long-term stabilized subgrade or expansive soil layer that prevents water re-absorption.

A chemical bond between Intresoil’s active ingredient and the surface of the clay particles repels water so it is not absorbed. Water moves freely, evaporation is promoted, and drainage is improved, to enhance performance and longevity. Additionally, traffic can be allowed on the treated surface immediately following the final compaction, thus densifying the treated layer to increase its bearing capacity.

Midwest’s NaturalPave Intresoil is ideal for stabilization projects where importing aggregate is costly and impractical, lime and cement is too expensive, and when in-situ material is:

poor and unsuitable for construction | highly susceptible to moisture infiltration | significantly affected when saturated | contains a high percent of clay

 

It's Science With a Twist of Clay
Provides Long-term Stabilization
Permanently stabilizes the clay layer for longevity and enhanced performance
Maintains Bearing Strength Of Subgrade During Wet Periods
Decreases the moisture absorption and shrink/swell properties of clay
Reduces The Required Volume Of Gravel By Up To 50%
Decreases the thickness of gravel required while still supporting traffic demands
Reduces Maintenance Costs
Maintains the strength of the treated layer even when saturated
Decreases Installation Costs, Resources And Time
Increased compaction with less effort, time and using common equipment
Reduces Failures From Poor Subgrade Material
Lessens need to remediate potholes, ruts and other issues associated with wet conditions

SF2

NEW NON-TRADITIONAL STABILIZATION SYSTEM FOR MARGINAL SOILS FOR REMOTE ACCESS ROADS, PADS, TOWNSHIP ROADS AND PROJECTS PRESENTING CONSTRUCTION CHALLENGES

Innovative solution for aggregate replacement and subpar in-situ material.

SF2 technology is an important tool for establishing operating capability and to increase the expedient use of roads and pads.

SF2 uses synthetic fibers and synthetic fluid binder to create bonds within on-site native soils that enhance compressive strength, CBR, shear strength, material or aggregate adhesiveness or the ability of the construction material to not wash out or roll away during heavy traffic loading. SF2 can be applied year-round, in all weather conditions, in marginal soil types. (Unlike options like Portland cement, SF2 doesn’t even have a cure time, meaning traffic can continue immediately after installation.) SF2 is ideal where there is little natural occurring gravel and the cost to transport gravel to the construction site and mobilization is very expensive.

Perhaps the greatest benefit of SF2 is that in addition to reinforcing the entire soil mass is its unique water-resistant and resistance to freeze-thaw damage. This reduces maintenance costs and offers you a lower cost per mile for your road management budget. And unlike aggregate, where the loss of particulate matter (as dust in dry weather, washed away by precipitation in wet weather) leads to reduced aggregate and lower compressive strength over time, the compressive strength of SF2 actually increases over time with heavy traffic.

 

 

 

Stronger, more durable roads and pads
Binds soil or aggregate at the molecular level. This increase can be as much as 400% in 30 days
Creates compressive strength that increases with more traffic usage
Greatly decreases rutting, mud, and soft soil causing equipment being buried axle deep
A versatile, new non-traditional road stabilization option
Increases shear strength, water-resistance and unsusceptible to freeze-thaw conditions by reinforcing entire soil mass
Aggregate loss minimized and prevented
No additional aggregate needed
Can accommodate chip seal, aggregate or asphalt paving
Cheaper to maintain and easier to repair
Doesn’t cure in the traditional sense, so doesn’t break
Traffic can continue during reconstruction
Allows you to keep operations moving without delay and higher cost

WANT THE MOST ADVANCED SOIL STABILIZATION TECHNOLOGY IN THE WORLD?