|Date Updated:||July 9, 2018|
|Price||Call For Pricing|
HEATING AND DRYING Ground Heaters is a brand of climate control products from Wacker Corporation, a subsidiary of Wacker Construction Equipment AG (Munich, Germany), and is sold and rented by a network of dealers and supported by a team of factory trained sales and service personnel. With over 15 years of experience in climate control, Ground Heaters products lead the industry with superior quality and support. Our portable and user -friendly products make for easier setups and lower labor costs, and help maintain project schedules. With products in use by commercial and industrial construction companies, highway bridge builders, utilities, municipalities and residential contractors to cure concrete in cold weather, thaw frozen ground quickly and safely and heat and dry enclosed workspaces, Ground Heaters are involved with all aspects of climate control. Get the reliability and performance you demand. Years of product development and listening to customers' needs have resulted in equipment you can count on - job after job.
How It Works The versatile Ground Heater® - solves cold weather construction problems! Ground Heaters®' dry, radiant, hydronic heat is economical and easy to use!
- Thaw frozen ground for excavation and concrete placements
- Thaw up to 1 foot deep per day!
- Accurately quote winter construction jobs
- Deliver projects on time
- Keep crews and equipment working all winter
- Protect exposed footings from frost heaving
- No need to build temporary roads.. adjacent ground stays frozen
- Cure concrete - achieve required strength gain sooner
- Quote projects accurately
- Keep projects on schedule
- Keep crews and equipment working all winter
- Avoid risk and expense of frozen concrete
- No expensive enclosures to build
Ice in the soil!Know Your Dirt! Ice Content of Frozen SoilsGravel
5 to 7 lbs.
in 1 cu. ft.Sand
14 to 18 lbs.
in 1 cu. ft.Clay
16 to 22 lbs.
in 1 cu. ft.Silt
15 to 52 lbs.
in 1 cu. ft.Up to 1,001
to melt iceUp to 2,574
to melt iceUp to 3,146
to melt iceUp to 7,436
to melt iceMelting ice requires 143 Btu's per pound! Frost Facts
- Soil does not freeze
- Water in soil freezes
- Ice binds soil
- Melting ice requires 143 Btu's per pound!
Ground Heater® System94% of the heat is conducted into frozen ground!
- Thaws at a fast rate - typically 1 ft. deep per day
- Achieves up to 10' thaw depth per application
- No temporary enclosure to build
- Uses fuel efficiently; fuel costs per cu. ft. thawed:= less than 2¢= $1.10
- Requires minimal supervision
- Utilizes BTU's efficiently with minimal heat loss
Hot Air SystemOnly 15% of the heat is conducted into the frozen ground!
- Limited thaw depth
- Requires building costly temporary enclosures
- Requires noisy propane heaters
- Creates outrageous propane bills
- Emits noxious fumes into enclosure
- Requires constant supervision
Thaw Cost Comparison Thawing 6,000 sq. ft., 3 ft. deep Hot Air Ground Heater OwnRentTime25 days3 days3 daysEquipment/labor/
materials cost$4,934$913$1,860Fuel Cost$19,800$390$390Total job cost$24,734$662$1,568Cost/cu. ft.$1.37¢8.7¢16.7¢
NOTE: Figures above are based on average rates/costs. Actual rates/cost incurred may vary depending upon geographical location.
Ground Heater® out-performs hot air!
Thawing 6,000 sq. ft., 3 ft. deepTime8:1Fuel Cost50:1Overall Cost14:1
Ground Heater® System Setup 1.Prepare Site
Scrape snow and ice from thaw site.2.Position Heat Transfer Hose
Space hose 2 feet on center over thaw site area. A closed system, only heat goes into ground.3.Lay Poly Vapor Barrier
Place minimum 3 mil poly vapor barrier to contain water vapor.
Prevents loss of heat
Keeps soil moist for better heat conduction
Keeps hoses and blankets clean 4.Place Insulation Blankets
Prevent heat loss and direct heat into ground. Requires 2 to 3 layers of high R value blankets.
- Thaw fast - typically 1 foot deep/ day!
- Thaw cheap - as low as 9.7¢/cu. ft.
- Thaw deep - up to 10 feet/application
- Thaw easy - no enclosures to build; set up is simple
- Thaw large areas - up to 18,000 sq. ft./application
- Thaw safe - certified in the US and Canada
NOTE: Figures above are based on average rates/costs. Actual
rates/cost incurred may vary depending upon geographical location.Go to top of page copyright © 1998-2008 Ground Heaters legal notice
Problem:Cold temperatures slow speed of
concrete's cure, causing cost
increases and schedule delays.
Best Solution:Use a Ground Heater® to accelerate the cure. A Ground Heater® raises concrete to ideal curing
temperature (65°-75°F), greatly reducing costs and delays. Fact #1:
SpeedCement chemically reacts with water to produce calcium silicate hydrate... the chemical compound that makes concrete hard and strong.Temperature mainly determines the speed of this hydration reaction.The speed of the hydration reaction determines how long it takes for
concrete to set and develop strength.
The speed of the hydration reaction is mostly determined by the temperature of the concrete.Concrete Curing Process:Aggregate & Paste Plastic Phase Concrete is placedCold temperatures delay initial set and increase the risk of concrete freezing.Temperature vs Time to Initial Set
Initial Set Set Phase Finishing operations are completedCold temperatures delay final set and increase the risk of concrete freezing.
Concrete must reach 500 psi before it can withstand a freezing cycle.Temperature vs Time to Reach 500 psi
Hard Rigid ConcreteHardened Phase Curing measures are implemented and strength development beginsCold temperatures delay strength gain. Concrete must reach 75% design
strength to strip forms & withstand load.Temperature vs Time to Reach 75% Design Strength
- Cure fast - achieve initial set in 2-6 hours
- Cure all placements - flexible hose allows any configuration
- Cure easy - no enclosures to build; set up is simple
- Cure large areas - up to 45,000 sq. ft./application
- Cure safe - certified in the U.S. and Canada
Slab on Grade
1. Preheat ground2. Remove insulation & hoses3. Place concrete on warm ground4. Maintains slab at 65°-75°F
Poured walls or Columns 1. Preheat forms, cover with insulation2. Pour 75° concrete into forms3. Ground Heater® maintains 65°-75°F concrete for curing period
Elevated SlabGround Heater® heating elevated slabCross-section viewGround Heater® maintains 65°-75°F concrete for curing period
Go to top of page
- copyright © 1998-2008 Ground Heaters