Industry Reports

Report No.	IP36(jot this number down to order)
Title	Asphalt Revetments for Slope Protection in the Arctic
Author(s)	Vallerga, B.A., Consulting Civil Engineer; Monismith, C.L., Univ. of CA, Berkeley, & Yice, R., Middle East Technical Univ., Ankara, Turkey
Publisher
Pub. Date
Pages	13 pages
Keywords
Description	From experience in the Netherlands and elsewhere in Europe, it has been demonstrated that slope protection of coastal embankments subjected to heavy wave action can be accomplished with lining systems made of mixtures of asphalt and mineral aggregate. In this study properties of such materials for use in low-cost linings on man-made islands in the Beaufort Seal area of Alaska have been determined and the response of such lining systems under arctic conditions to repeated bending strains from wave action, to thermal stresses and to long-term loading has been evaluated. Three asphalt/aggregate materials formulations have been characterized and evaluated in this study, including: sand-asphalt, stone-mastic, and stone-asphalt-rubber. A test program was designed to characterize these materials with respect to fatigue life, thermal cracking, and long-term creep. Using the results of the testing program, various finite-element analyses on sand-asphalt lining systems were carried out to determine their structural behavior under wave loading and their resistance to low-temperature cracking and to creep deformations at high temperatures. From this study, it is concluded that asphalt mixtures made with locally available sands and gravels can be formulated having engineering properties at both high and low temperature exposures which are suitable for the design and construction of asphalt revetments for man-made islands which will be resistant to the detrimental effects of freeze-thaw cycles and of water action associated with the offshore Arctic environment.
Postage	$ 2.00 : U.S. $ 2.20 : Canada/Mexico $ 2.40 : Rest of the World