Washington State University
Assessment of Lube Oil Management and Self-Cleaning Oil Filter Feasibility in WSF (WA State Ferries) Vessels
PI: Liv Haselbach (WSU), haselbach@wsu.edu
Dates: 07/01/2013 – 7/31/2015
Final Project Report: PacTrans-44-WSU-Haselbach
Lube oil management aboard vessels is a critical component of maintaining the life of a vessel engine. Lube oil and the associated filters are expensive as is the maintenance and associated downtime. Disposal of filters as a hazardous waste and handling of lube oil presents an environmental risk and additional costs. Preventive and predictive management of lube oil can reduce lube oil maintenance costs and environmental risk, making the operation of Washington State Ferries (WSF) vessels more sustainable and cost effective. To gain these benefits WSF needs to consider both the economic and the environmental impacts of the self-cleaning oil filters alternative. Read More
NDE System for Determining Wood Guardrail Post Integrity
PI: Donald A. Bender (WSU), bender@wsu.edu
Dates: 07/01/2013 – 7/31/2015
Final Project Report: PacTrans-31-WSU-Bender
Wood guardrail posts degrade over time due to decay, insects and weathering, and the Washington State Department of Transportation (WSDOT) needs an inspection system to determine the condition of posts along our highways to effectively prioritize future investments in guardrail upgrades. There are approximately 1.5 to 2 million guardrail posts on the state highway system. Post inspection methods at WSDOT have never been uniformly defined, and the inspection opportunities have normally been associated with pavement preservation projects. Read More
Optimizing Asphalt Pavement Performance for Climate Zones Within Washington State
PI: Haifang Wen (WSU), haifang_wen@wsu.edu
Dates: 07/01/2013 – 8/31/2015
Final Project Report: PacTrans-34-WSU-Wen
The pavements in the State of Washington witnessed great differences in performance, depending on the climatic zones. The climate west of the Cascade (referred to as West) is generally mild with wet winters. The climate in east of the Cascade (referred to as East) is drier with more extreme temperatures which often drop below freezing during winter. Studded tires are widely used in this area during winter time, creating additional damage (rutting and abrasion) to the hot mix asphalt (HMA) pavements. Read More
Laboratory Evaluation of Recycled Concrete as Aggregate in New Concrete Pavements
PI: Haifang Wen (WSU)
Dates: 03/01/2012 – 07/31/2014
Final Project Report: PacTrans-34-WSU-Wen
The Washington State Department of Transportation (WSDOT) has initiated a research project to investigate the use of recycled concrete as aggregates (RCA) in Portland (hydraulic) cement concrete pavements (PCCP). The planned source for the RCA in the project will be from demolished pavements in western Washington, which generally contain very high quality aggregates. Aggregate quality varies across the state, and concrete made with RCA sourced elsewhere will likely have different properties.
Media Filter Drain: Modified Design Evaluation
PIs: Cara Poor, Liv Haselbach (WSU)
Dates: 03/01/2012 – 07/31/2014
Final Project Report: PacTrans-44-WSU-Haselbach
The Washington State Department of Transportation (WSDOT) wishes to modify the media filter drain (MFD) design by changing the crushed gravel specification used in the mix. In order to gain approval from the Washington State Dept of Ecology (Ecology) and incorporate into their standard specifications, metal removal rates for the new design need to be compared to the old design based on accepted stormwater doses.
