TM 5-826-6/AFR 93-5
the rut and the depth measured. The mean depth in inches should be computed from measurements taken along the
length of the rut.
n. Shoving of asphalt pavement by PCC slabs, distress 54.
(1) Description. PCC pavements occasionally increase in length at ends where they adjoin flexible pavements
(commonly referred to as "pavement growth"). This "growth" shoves the asphalt- or tar-surfaced pavements, causing
them to swell and crack. The PCC slab "growth" is caused by a gradual opening up of the joints as they are filled with an
incompressible material that prevents the joints from reclosing.
(2) Severity level.
(a) Low severity level (L). A slight amount of shoving has occurred with little effect on ride quality and no
breakup of the asphalt pavement (fig. A-58).
Figure A-58. Low severity shove on the outside and medium severity in the middle.
(b) Medium severity level (M). A significant amount of shoving has occurred, causing moderate
roughness and little or no breakup of the asphalt pavement (fig. A-58).
(c) High severity level (H). A large amount of shoving has occurred, causing severe roughness or
breakup of the asphalt pavement (fig. A-59).
Figure A-59. High severity shoving.
A-35
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