Zero Velocity Salt Spreader

Size: px

Start display at page:

Download "Zero Velocity Salt Spreader"

Cameron Tyler
5 years ago
Views:

1 Zero Velocity Salt Spreader Tommy Nantung Pavement and Materials Engineer Research Division INDOT Pre-Conference Proceedings - Page 341

Evaluation of Zero Velocity Salt Spreader Tommy Nantung Section Manager, INDOT Research Division and INDOT Snow and Ice Control Committee In Cooperation With - -

Don Johnson (FHWA, Indiana Division) Spread Pattern of Salt on Pavement - - Spreading over a wide path, covering parts of two lanes by means of a spinning disk or

2 Evaluation of Zero Velocity Salt Spreader Tommy Nantung Section Manager, INDOT Research Division and INDOT Snow and Ice Control Committee In Cooperation With - - Mr. Larry Vaughn (INDOT Crawfordsville District) 3 Mr. Jerry Hall (INDOT Angola Sub-District) - - Mr. Bill Rinard (INDOT Operations Supports Division) - - Mr. Don Johnson (FHWA, Indiana Division) Spread Pattern of Salt on Pavement - - Spreading over a wide path, covering parts of two lanes by means of a spinning disk or a roller extending the width of the truck tailgate - - Windrowing in a narrow path of 1 to 3 feet through a tube or off a dead spinner Pre-Conference Proceedings - Page 342

Optimal Salt Application Rate --Level of service required --Weather conditions and their change with time --State and characteristic of salt used --Time of application --Traffic density at

supplies, and structural materials --Safe pavement surface and minimum cost to the public and to the environment Approaches to Minimize Salt Use --Prewetting salt with liquid chemicals

3 Optimal Salt Application Rate --Level of service required --Weather conditions and their change with time --State and characteristic of salt used --Time of application --Traffic density at time --Topography and type of road surface Issues Concerning Salt Usage --Proper application rate of salt is a matter of judgment --Public awareness on the effect to soils, vegetation, water supplies, and structural materials --Safe pavement surface and minimum cost to the public and to the environment Approaches to Minimize Salt Use --Prewetting salt with liquid chemicals --Direct application of liquid chemicals --Spreader attributes --Better management control --Training --Adequate weather forecast --Use of abrasives and snowplowing Pre-Conference Proceedings - Page 343

4 Typical Characteristics of Conventional Salt Spreaders - - Loss of material. Blown off the road by traffic especially high speed vehicles - - Particles bouncing off the pavement - - Cast up to 40% of deicing material into an area outside the traffic lanes - - Speed differential between truck-traffic - - Real performance during the winter is hardly tested Typical Characteristics of Zero Velocity Salt Spreaders - - Electronically operated - - Ground oriented granular material spreader - - Operator with management programming - - Desire spread rate with automatic adjustment - - Maintain consistent pound per mile application rate - - Reduce truck-traffic speed differential Relation of Salt Use to Travelling Public - - Increased hazard to safe travel - Death, injury, and property damage 3 Additional economic penalty - - Delay of traffic and increased cost of operation Pre-Conference Proceedings - Page 344

.. Ground Speed - 20 Miles per hour - 4 0 Miles per hour Size Distribution of Salt -T o ta l

5 Evaluation Settings Spreader types - Industrial Hydraulic System - Muncie System - Pengwyn Zero Velocity - Swenson Zero Velocity -T ylerz ero Velocity Evaluation Settings... Ground Speed - 20 Miles per hour Miles per hour Size Distribution of Salt -T o ta l materials - Retained on ASTM #4 Sieve, larger than 4 mm, pea gravel size Spread Patterns Pre-Conference Proceedings - Page 345

6 Industrial Hydraulic System Industrial Hydraulic at 20 MPH, Total Salt Industrial Hydraulic at 20 MPH, Salt Retained on #4 Sieve Pre-Conference Proceedings - Page 346

7 Industrial Hydraulic at 40 MPH Industrial Hydraulic at 40 MPH, Total Salt Industrial Hydraulic at 40 MPH, Salt Retained on #4 Sieve Pre-Conference Proceedings - Page 347

8 Muncie System at 20 MPH, Total Salt Muncie System at 20 MPH, Salt Retained on #4 Sieve Muncie System at 40 MPH, Total Salt Pre-Conference Proceedings - Page 348

9 Muncie System at 40 MPH, Salt Retained on #4 Sieve Pengwyn Zero Velocity Spreader Pengwyn Zero Velocity Spreader Pre-Conference Proceedings - Page 349

10 Pengwyn System at 20 MPHTfotal Salt Pengwyn System at 20 MPH Salt Retained on #4 Sieve Pengwyn System at 40 MPH, Total Salt Pre-Conference Proceedings - Page 350

11 Pengwyn System at 40 MPH, Salt Retained on #4 Sieve Pengwyn System at 40 MPH Pengwyn System at 40 MPH Pre-Conference Proceedings - Page 351

12 Swenson Zero Velocity Spreader Swenson Zero Velocity Spreader Swenson System at 20 MPH Total Salt Pre-Conference Proceedings - Page 352

13 Swenson System at 20 MPH, Salt Retained on # 4 Sieve Swenson System at 40 MPH, Total Salt Swenson System at 40 MPH, Salt Retained on #4 Sieve Pre-Conference Proceedings - Page 353

14 Swenson System at 40 MPH Tyler Zero Velocity Spreader Tyler System at 20 MPH, Total Salt Pre-Conference Proceedings - Page 354

15 Tyler System at 20 MPH, Salt Retained on # 4 Sieve Tyler System at 40 MPH, Total Salt Tyler System at 40 MPH, Salt Retained on #4 Sieve Pre-Conference Proceedings - Page 355

Percent Recovery Rate Conclusions --Zero Velocity Salt Spreader in general give a better spread pattern and recovery rate compared to the conventional

Conclusions - - Performance of the Zero Velocity Salt Spreaders depends prim arily to the ability o f the spreaders to continuously spread the specified

16 Percent Recovery Rate Conclusions --Zero Velocity Salt Spreader in general give a better spread pattern and recovery rate compared to the conventional spreaders at 20 MPH - - Zero Velocity Salt Spreader give a much better spread pattern and recovery rate compared to the conventional spreaders at 40 MPH Conclusions - - Performance of the Zero Velocity Salt Spreaders depends prim arily to the ability o f the spreaders to continuously spread the specified am ount of salt -- Down tim e o f the spreaders should be taken into account when selecting a Zero Velocity Spreader Pre-Conference Proceedings - Page 356

SAVE S ALT SAVE MONEY SAVE T IME

SAVE S ALT SAVE MONEY SAVE T IME WITH GROUND-SPEED CONTROL When winter strikes, having snow and ice removal equipment with groundspeed control that functions efficiently and effectively is critical to