Winter Maintenance Operations Deicers Tony Myhra 8003467237 www'cryotech'com NAACCMA DVD Available - PowerPoint PPT Presentation

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Winter Maintenance Operations Deicers Tony Myhra 8003467237 www'cryotech'com NAACCMA DVD Available

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Combinations of all of the above. Some with inhibitors packages. Calcium magnesium ... Pellet, flake, granular - hydroscopic. Liquid to a 25% - 35% solution ... – PowerPoint PPT presentation

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Title: Winter Maintenance Operations Deicers Tony Myhra 8003467237 www'cryotech'com NAACCMA DVD Available


1
Winter Maintenance Operations -
Deicers
Tony Myhra - (800)346-7237
www.cryotech.com
NAAC/CMA DVD Available
2

Tony Myhra - (800)346-7237 www.cryotech.com NAAC/
CMA DVD Available
3
Deicing Chemicals Available
  • Sodium chloride
  • Magnesium chloride
  • Calcium chloride
  • Potassium chloride
  • Combinations of all of the above
  • Some with inhibitors packages
  • Calcium magnesium acetate (CMA)
  • Potassium acetate (CF7)
  • Anhydrous sodium acetate (NAAC)

4
Sodium ChlorideNaCl
  • Working temperature - 20F (-7C)
  • Eutectic temperature - -6F (-21C)
  • Granular - Solid crystal in form
  • Can be liquefied to a 23 solution
  • Rate of application 200-500/LM
  • Can be mixed with abrasives
  • Most common deicer

5
Magnesium ChlorideMgCl2
  • Working temperature - 5F (-15C)
  • Eutectic temperature - -28F (-33C)
  • Granular hydroscopic
  • Liquid to a 25 - 35 solution
  • Rate of liquid application 15-35 GAL/LM
  • Deice anti ice - prewet
  • Aggressive corrosion
  • Requires periodic agitation weekly or daily

6
Calcium ChlorideCaCl2
  • Working temperature - -25F (-31C)
  • Eutectic temperature - -51F (-45C)
  • Pellet, flake, granular - hydroscopic
  • Liquid to a 25 - 35 solution
  • Rate of liquid application 15-25 GAL/LM
  • Deice anti-ice pre wet
  • Requires daily agitation
  • Aggressive Corrosion
  • Hard on leather shoes and gloves

7
Potassium ChlorideKCl
  • Working temperature - 25F (-4C)
  • Eutectic temperature - 5F (-15C)
  • Solid crystal in form
  • Rate slightly higher than NaCl
  • Deicer mostly commercial use

8
Calcium Magnesium Acetate (CMA)
  • Working temperature - 20F (-7C)
  • Eutectic temperature - -18F (-28C)
  • Pelleted - Liquid to a 25 - 30 sol
  • Rate of liquid application anti-icing-15-25
    GAL/LM Deice 25-60 GAL/LM
  • (.5-1 gallon/1000 Ft²)
  • Rate dry 200-400 LANE MILE (10-25/1000 FT²)
  • Deice Anti-ice Pre wet sensitive areas
  • Agitation of liquid prior to loading
  • Contains no chlorides beware of fake CMA
  • Safest deicer for new concrete

9
CMA 40
  • Working temperature - 20F (-7C)
  • Eutectic temperature - -8F (-22C)
  • 40 CMA 60 Sodium Chloride
  • Spread Same as rock salt - 200 - 500 LANE
    MILE
  • Used to prevent spalling
  • Used only where there is no steel in reinforced
    concrete.
  • Lower cost deicer.

10
Anhydrous Sodium Acetate (NAAC)
  • Working temperature - 0F (-18C)
  • Eutectic temperature - -8F (-22C)
  • Pelleted only
  • Spread 200 - 500 LANE MILE
  • 7-20 per 1000 Ft²
  • Deicer contains no chloride
  • Used in salt sensitive areas airport runways,
    bridges, parking garages, doorways, sidewalks,
    etc.

11
Potassium Acetate Based (KAC) CF7
  • Working temperature - -26F (-32C)
  • Eutectic temperature - -76F (-60C)
  • Liquid 50 solution
  • Rate of liquid application 15-3O GAL/LM
  • .5 to 1 gallon per 1000 Ft².
  • Deice anti-ice pre wet
  • No agitation indefinite storage life
  • Contains no chloride
  • Ideal for Fixed Anti-icing Spray Technology
    (FAST)

12
Hidden Costs of Deicing
  • Cost of salt
  • Purchase price
  • Storage
  • Labor
  • Equipment
  • Corrosion to structures and vehicles
  • Cost of sand
  • Purchase price
  • Storage
  • Labor
  • Equipment
  • Clean up
  • Lawsuits

13
Other Hidden Costs
  • Cost to public if we dont deice.
  • Accidents
  • Delays
  • Lost business
  • Lost production
  • Environmental concerns
  • Water quality
  • Chlorides
  • Damage to vegetation and soils
  • Air quality
  • PM10
  • Sand siltration

14
Federal Highway Administration
  • Search for chloride salt alternatives
  • Environment
  • Performance
  • Low Corrosion

15
CMA, NAAC CF7The Problem Solvers
16
Acetate Ion
  • Chemical formulaCH3COO-
  • Low corrosion
  • Low toxicity
  • Biodegradable
  • Long lasting effect

17
Raw Material for Acetates
  • Acetic Acid
  • Acetate ion
  • Found in vinegar
  • pH changed when reacted base materials
  • Biodegradable

18
Acetate Deicers
  • Calcium magnesium acetate (CMA)
  • Ca3Mg7(CH3COO)20
  • Potassium acetate (KAc)
  • CH3COOK
  • Anhydrous sodium acetate (NaAc)
  • CH3OONa

19
Calcium Magnesium Acetate
  • Dolomitic lime acetic acid
  • yields
  • Ca3Mg7(C2H3O2)20

20
Calcium Magnesium Acetate
  • Since 1979
  • Environmentally safe
  • Low corrosion
  • Safe for concrete
  • Effective performance
  • Residual effect
  • Stores well
  • Biodegradable
  • Low toxicity
  • Costs more to make!

21
Cryotech NAACSolid Runway Deicer
  • 97 Anhydrous Sodium Acetate
  • lt1 corrosion inhibitors
  • CH3COO- Na

22
97 Anhydrous Sodium Acetate
  • Since 1997
  • Environmentally safe
  • Low corrosion
  • Effective performance
  • Approved for airports
  • Residual effect
  • Stores well
  • Biodegradable
  • Low toxicity
  • Costs more to make!

23
CF7 Liquid DeicerPotassium Acetate-Based
Acetic Acid Potassium Hydroxide
yields Potassium Acetate Water (plus
proprietary corrosion Inhibitors) HC2H3O2 KOH
gt KC2H3O2 H2O
24
Problem Solver
  • Environment
  • Anti-icing and Deicing
  • New bridges, Chloride Contaminated bridges
  • Sidewalks, Doorways Parking Structures
  • Blending/Inhibitor
  • Fixed anti-icing spray technology
  • (F.A.S.T.)

25
Understanding Deicers
  • Must know how to use deicers
  • Effectively and how they work.

26
What Is Anti-Icing?
  • Anti-icing is a snow and ice control measure to
    prevent a strong bond between frozen
    precipitation or frost and a pavement surface by
    timely application of a chemical freezing point
    depressant. Proactive approach.

27
Anti-icing Expectations
  • Snow more easily removed
  • Ice may not form or remain slushy
  • Lower chemical usage
  • Shoveling, plowing, brooming required
  • Lower equipment maintenance costs

28
What Is De-Icing?
  • De-icing is an measure where a deicer is applied
    to the top of an accumulation of snow, ice or
    frost that is already bonded or formed to the
    pavement surface. Reactive approach.

29
Equipment
  • Using the right equipment
  • For effective snow ice control

30
New Bridges, Parking Garages, Elevated Walkways
CMA/NAAC/CF7 The problem solver
31
FHWA - CMA Study Conclusions
  • Concrete w/o rebar
  • Little weight loss or spalling
  • Concrete with rebar
  • No damage
  • 4 Year study
  • Non-metallics
  • Little affect

CMA The problem solver
32
Costs of Using Chloride Based Deicers
  • Cost of new construction - 20,000-24,000/Space
  • Cost to repair chloride damage 3000-4000/space
  • Cost of lost revenue while out of service?
  • Cost of inconvenience to customers.
  • Cost of demolition
  • Cost of liability and insurability
  • Cant afford chloride deicers damage from
    50/space of salt over a 20 year period

33
CMA Effect on Chloride Contaminated Concrete
  • The Danish corrosion centre, 1990
  • CMAseems to delay the onset of corrosion.
  • BP research centre, 1989
  • Changingto acetate deicer decreases the
    corrosion rate of steelby more than a factor of
    ten.

34
Corrosion Retardation
35
Effect of Deicers on ConcreteSpalling of Non
Air-Entrained Structural Concrete
Dept of Transport, UK, 1993
36
Concrete Spalling
37
Acetate Deicers Summary of Options
  • Direct application
  • With chloride deicers
  • With sand
  • Liquid deicer
  • Liquid anti-icer
  • Liquid pre wetter

38
Deicing Chemicals Review
  • Sodium chloride
  • Magnesium chloride
  • Calcium chloride
  • Potassium chloride
  • Combinations of all of the above
  • Some with inhibitors packages
  • Calcium magnesium acetate (CMA)
  • Potassium acetate (CF7)
  • Anhydrous sodium acetate (NAAC)

39
Calcium Magnesium Acetate (CMA)
  • Working temperature - 20F (-7C)
  • Eutectic temperature - -18F (-28C)
  • Pelleted - Liquid to a 25 - 30 sol
  • Rate of liquid application anti-icing-15-25
    GAL/LM Deice 25-60 GAL/LM
  • Rate dry 200-400 Lane Mile (10-25/1000 Ft²)
  • Deice Anti-ice Pre wet sensitive areas
  • Agitation of liquid prior to loading liquid.
  • Contains no chlorides
  • Safest deicer for new concrete

40
CMA 40
  • Working temperature - 20F (-7C)
  • Eutectic temperature - -8F (-22C)
  • 40 CMA 60 Sodium Chloride
  • Spread 200-500 LANE MILE (10-25/1000 Ft²)
  • Used to prevent spalling
  • Used only where there is no steel in reinforced
    concrete.
  • Lower cost deicer.

41
Anhydrous Sodium Acetate (NAAC)
  • Working temperature - 0F (-18C)
  • Eutectic temperature - -8F (-22C)
  • Pelleted only
  • Spread 200-500/Lane Mile (7-20/1000 Ft²)
  • Deicer contains no chloride
  • Used in salt sensitive areas airport runways,
    bridges, parking garages, doorways, sidewalks,
    etc.

42
Potassium Acetate Based (KAC) CF7
  • Working temperature - -26F (-32C)
  • Eutectic temperature - -76F (-60C)
  • Liquid 50 solution
  • Rate of liquid application 15-3O GAL/LM
  • .5 1 gallon per 1000 Ft²
  • Deice anti-ice pre wet
  • No agitation indefinite storage life
  • Contains no chloride
  • Ideal for Fixed Anti-icing Spray Technology
    (FAST)

43
Potassium Acetate Based (KAC) CF7
  • Working temperature - -26F (-32C)
  • Eutectic temperature - -76F (-60C)
  • Liquid 50 solution
  • Rate of liquid application 15-3O GAL/LM
  • .5 1 gallon per 1000 Ft²
  • Deice anti-ice pre wet
  • No agitation indefinite storage life
  • Contains no chloride
  • Ideal for Fixed Anti-icing Spray Technology
    (FAST)

44
Acetate DeicersSummary of Options
  • Direct application
  • With chloride deicers
  • With sand
  • Liquid deicer
  • Liquid anti-icer
  • Liquid pre wetter

45
Options for Parking Garage Longevity
  • Good Design
  • Good Construction Materials
  • Good Drainage
  • Good Sealers/Membranes - Waterproofing
  • Continuous Maintenance Practices
  • Avoid Chloride Deicers
  • Use Non-Chloride Deicers like NAAC, CMA CF7

46

Questions?
Tony Myhra - (800)346-7237 www.cryotech.com NAAC/
CMA DVD Available
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