Cost effective prevention of reflective cracking of composite pavement : tech summary.
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2011-09-01
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Edition:Tech summary; Sept. 2011.
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Abstract:Refl ection of cracks in hot mix asphalt (HMA) overlays represents a serious challenge associated with pavement
rehabilitation. Since the early 1930s, considerable resources and eff orts have been spent to fi nd new and relatively
inexpensive techniques to delay refl ection cracking. Diff erent methods, including the use of interlayer systems, have
been suggested for enhancing pavement resistance to refl ection cracking. Experimental investigations in the early
1980s showed that interlayer systems might be used to delay or to prevent the refl ection of cracks through a new
overlay placed over an old cracked pavement. Louisiana experimented with various techniques and treatments to
control refl ection cracking since the 1970s; however, the performance and cost-eff ectiveness of these methods were not
evaluated in many projects. Performance and economical assessments of these various treatment methods present a
critical need to ensure successful control of this distress and eff ective use of available funds. Therefore, it is necessary to
analyze various pavements across the state in which these treatments were used to establish the performance and cost
eff ectiveness of these crack control methods.
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