Putting Earth Day into Practice Each Day: Life Cycle Cost Investigation and The earth

Presentation Transcript

Putting Earth Day into Practice Every Day: Life Cycle Cost Analysis and the Environment Dr. Kevin Gardner Co-Director, RMRC April 22 nd , 2008

Develop monetary assessment apparatuses/programming to evaluate fleeting costs, life-cycle expenses and life cycle effects of utilizing reused materials as a part of transportation foundation. Through effort get these apparatuses utilized and lessons figured out how to the group. Comprehend natural conduct of reused materials and give clear direction on proper utilize and potential dangers. Objective

A device that can help with comprehension the more extensive effects of a material or process. What are ecological expenses and advantages of utilizing reused materials? Are there extra natural or societal advantages that off-set potential site-particular dangers? Life Cycle Assessment

Modeling Tools Pavement Life Cycle Assessment Tool for Environmental and Economic Effects (PaLATE) Materials, outline parameters, gear, upkeep and cost inputs Provides full life cycle costs and natural evaluation. Full scale examination in view of Dept of Commerce statistics information Provides appraisals of life cycle air emanations, contaminant discharges, water and vitality utilization and harmful and non-destructive human harmfulness possibilities Provides evaluations of contrast in effect because of transportation separation or diverse kind of development materials (virgin versus reused) 5

Case Study 1 NH DOT Construction Project in focal NH Portion of venture will use rubblization of a current solid roadway Investigate elective materials and think about existence cycle expenses and life cycle impacts (ecological impacts) Data from DOT engineers put into PaLATE – little interest in time.

NH DOT Case Study Initial Construction Option 1 Mill off the current Pavement Rubblize (Recycle) Concrete/Cover with ( Recycled ) Pavement Millings Widen with Virgin Materials Pave with 3.5" on New Hot Mix Asphalt Option 2 Remove Concrete Slab and landfill Construct 12" of Gravel & Crushed Gravel full width Pave with 5.5" of New Hot Mix Asphalt

NH DOT Case Study (cont) Maintenance Option 1 Years 4 & 8: Crack Seal Year 12: Resurface – 1" Wearing Course Years 16 & 20: Crack Seal Year 24: Resurface – 1" Wearing Course Maintenance Option 2 Year 1-11: nothing Year 12: Hot In-Place Recycling (HIPR) Year 13-23: nothing Year 24: HIPR

Life Cycle Costs: NH DOT Case Study virgin Recycled virgin Recycled Initial Construction cost for rubblization is about a large portion of that of utilizing virgin materials Maintenance cost of split fixing & reemerging is about twice that of HIPR

University of Wisconsin Pilot Scale extend situated in Lodi, WI Roadway depiction : 305 m length 10.4 m width asphalt 13.4 m width base & sub-base Materials: Bottom cinder Control – pounded shake Legend Case Study 2: Wisconsin Bottom Ash Control 125 mm AC 125 mm AC Lysimeter 115 mm Crushed Aggregate Base 115 mm Crushed Aggregate Base 140 mm Salvaged Asphalt Base 140 mm Salvaged Asphalt Base 600 mm Bottom Ash Subbase 840+ mm Excavated Rock or Subbase Subgrade

Scenario (2) Lysimeters underneath test areas gather leachate produced. Groundwater – 5 m beneath sub-base Soil creation of site: silty-topsoil (USGS reports) Material source separations 50 mi 100 mi Contaminants broke down: Cd, Cr, Se, Ag

PaLATE Results (2) Impact proportion = or <1 for all effect classifications, with the exception of HTP Cancer HTP Cancer – human danger potential because of disease HTP Cancer – Impact from base fiery remains is higher than effect from squashed shake Transportation figure: For all effect classifications, aside from SO 2 , transportation remove influences affect NO X and HTP non-malignancy, most influenced by transportation remove.

Modeling Tools (2) Hydrus 2D Finite component demonstrating program for mimicking development of water, warmth, and different solutes in fluidly immersed media. Predicts neighborhood scale transport of contaminants from reused materials to groundwater more than a few hundred years.

Hydrus 2D Results Hydrus 2D recreation for transport of Cr from base powder in street sub-base to groundwater (5 meter beneath reused materials layer) more than 200 years. Expect consistent inundation of contaminant into framework

Hydrus 2D Results (2) Hydrus 2D reenactment for transport of Se from base fiery remains in street sub-base to groundwater (5 meter beneath reused materials layer) more than 200 years Assumes steady deluge of contaminant into framework

Hydrus Results (2) Leaching potential for Wisconsin roadway is higher than distributed draining studies and for Cd, higher than MCL PaLATE comes about in light of Morse et al (2001) information – SPLP test comes about Hydrus2D expectations in view of UWisc information PaLATE utilized material's potential filtering amounts as a part of HTP malignancy forecasts Quantities achieving groundwater are essentially not exactly MCL – as anticipated by Hydrus2D

Case Study Scenario (Pittsburgh) Divided PA DOT PGH district into 20 pieces. Distinguished most elevated street thickness areas. Sourced total from virgin areas at present endorsed or IBPs from their area of era. Examined life cycle affect from totals (virgin versus mechanical repercussions) Aside: we are building up a GIS-based instrument that will empower clients to see reused materials sources on Google Earth with information layers (material sort, sums, area, contact data, and so forth)

Embodied Energy in Road (from total just!) Text Note: none of the investigations gave consider impacts related separate transfer/administration of mechanical side effects (that examination is expected).

Impacts (individual counterparts)

Hey Pittsburgh: Want to spare $3 million?

In Summary We can utilize reused materials to help the Earth AND spare cash in the meantime. There is still research and effort work that should be finished. What to do you think needs our consideration? RMRC & pooled finance study can be utilized to influence research and effort.