摘要
本文讨论两种机理的反射裂缝。一是半刚性基层上或已开裂老路面上铺筑薄沥青面层的情况。在此情况下,沥青面层的反射裂缝起始于底面,并向表面扩展,成为典型的反射裂缝。另一种情况是沥青面层相对厚。在此情况下,面层的“反射”裂缝起始于表面,并向下传播穿透面层并与下层裂缝相连。这类裂缝特称其为对应裂缝。这两类裂缝都主要由温度引起。本文针对这两类裂缝,提出相应的减裂措施。
This paper discusses the reflective cracks of two kinds of mecha-
nism.The one is for thin asphalt surfacing over semi-rigid roadbase or old
cracked pavement.In this case,the reflective cracking in surfacing initiated
at the bottom and propagated upward to the top of asphalt surfacing.It is the
typical reflective cracking.The other is for relatively thick asphalt surfacing,
in this case the reflective cracking in the surfacing initiated at the top and
propagated downward to the bottom of asphalt surfacing,and links up with
the cracking of underlying layer.This kind of cracking is named in particular
the corresponding cracking.The two kinds of cracking are mainly induced by
temperature.Finally,appropriate measures for minimizing the two kinds of
cracking are suggested.
出处
《公路交通科技》
CAS
CSCD
北大核心
1993年第3期1-7,共7页
Journal of Highway and Transportation Research and Development
关键词
机理
反射裂缝
对应裂缝
路面
Mechanism
Reflective cracks
Corresponding cracks
Measures
