Format | |
---|---|
BibTeX | |
MARCXML | |
TextMARC | |
MARC | |
DublinCore | |
EndNote | |
NLM | |
RefWorks | |
RIS |
Files
Abstract
Highway construction and maintenance relies heavily upon mined aggregates as a core
ingredient. The proximity of aggregate mine sites to highway or other construction locations is
an important issue since the total project costs are highly affected by transportation
cost/efficiency and also deterioration of the existing highway infrastructure as influenced by
frequent, heavy shipments traveling long distances. Likewise, the transportation costs for
hauling mined aggregates are minimized when shipments are loaded to capacity payload
weights.
This is the first attempt in a series of forthcoming studies to explore mineral shipment
characteristics with a spatial regression model. A comprehensive survey was conducted to
determine both the location and type of need for road improvements. This study investigates the
spatial relationships between construction aggregate shipments and the hauling trucks’ payload
weights as it pertains to highway deterioration in the State of Washington. Many studies have
examined the relationship between transportation cost and construction unit productivity but
there’s minimal information available pertaining to the relationship between payload weights,
shipment distances and highway deterioration.
To identify impacted highway segments resulting from aggregates shipments, mine locations and
shipment distances in cooperation with payload weights are examined. Naturally, spatial nonstationarity
of the data is possible whenever any process takes place over many different
geographical locations. As such, it’s appropriate and necessary to test the mining industry data
for spatial dependences. As a result, the paper employs a spatial error regression model with
distance based weights matrix to address spatial autocorrelation, to capture the interaction
between spatial units and to predict the incremental change in payload weights resulting from
increasing hauling distance. Results show a highly significant positive relationship between
payload weights and increasing shipment distances.