russ alger

Russ Alger

Director - Institute of Snow Research

Keweenaw Research Center

Michigan Technological University

Chemical Snow and Ice

Control and Removal

Chemicals

Chemical Usage

Environmental Protection

Pavements

Public Perception

Chemicals

Performance Character

o Safety

o Melting, Penetration, Undercut,

Friction …….

o Temperature

o Longevity

Liquid vs Solid

o Different Chemicals

o Stay on Pavement Better

o Less Chemical Used

o Deicing vs Anti-icing

Environmental Effects

o Plants and Animals

o Infrastructure

Cost

o Chemical

o Environment

o Infrastructure

Chemical Usage

Deicing

o Removal of Snow and Ice

o Used with Mechanical

Anti-Icing

o Mitigation of Bonds

o Used with Mechanical

Anti-Icing

Anti-Icing practice is an attempt to armor the

pavement surface prior to a freezing or frozen

precipitation event by use of freezing point depressants.

Pavement Condition Forecasting

Chemical Types

Pavement Interaction

Eliminate Frost Development

Limited “Black Ice”

Minimal Snow Bonding

Environmental Protection

Limit Usage

Limit Runoff

Treat Runoff

Armor Surfaces

Choose Vegetation …..

Pavements

Heated

Anti-Icing Smart

Epoxy Overlay Systems

Epoxy / aggregate overlays are

being installed across the country

as a means to seal bridge decks

and apply wear coats.

Many bridges in Michigan have

already been sealed.

Pavement Sealing

Decreased Corrosion

Less Chemical Infiltration

Armored Pavement Surface

Minimum Pavement ClosureMinimum Pavement Closure

We’re working on better equipment

to optimize application.

Easy to Apply

We’re working on better equipment

to optimize application.

AdvantagesAdvantages

Enhanced Friction

Pavement Seal

Less Chemical Used

Chemical Cost Easier to Overcome

Less Environmental Effect

Dry Pavement

Fewer Call Outs

Less Reliance on Forecasting

Aggregate / Chemical

Research“Manufactured” Aggregates

“Designer” Chemicals

Application Methods

Surface Prep

Asphalt

Colder Temps

Public Perception

Color, Odor, etc

Clear Pavement

The Houghton Experience + Re-Freeze

Environmentally

Russ Alger

Director – Institute of Snow Research

Michigan Technological University

1400 Townsend Drive

Houghton, MI 49931

phone - 906-487-2498

fax - 906-487-2202

email - rgalger@mtu.edu

Web – www.mtukrc.org