UFC 3-260-11FA
25 May 2005
3-6.9.3.3
Partially Bonded Overlay. A partially bonded pavement is a rigid overlay
placed directly on the cleaned existing pavement (that has a condition factor of 0.35 or
greater) without any special care to achieve a bond. A partially bonded plain jointed rigid
pavement can be used to overlay an existing plain jointed rigid pavement. A partially
bonded reinforced rigid pavement can be used to overlay an existing plain or reinforced
rigid pavement (UFC 3-260-02).
3-6.9.3.4
Nonbonded Overlay. A rigid overlay placed on a bond-breaking medium
is used when any of the following conditions exist:
A plain jointed rigid pavement is used to overlay an existing reinforced
rigid pavement (UFC 3-260-02).
The condition factor of the existing pavement is less than 0.35
(UFC 3-260-02).
Matching the existing joints is impractical (UFC 3-260-02).
3-6.10
Joints And Sealants, Rigid Pavement
3-6.10.1
Joints (UFC 3-260-02)
3-6.10.1.1 Contraction Joints. A contraction joint is a weakened plane joint that is
provided to control cracking in rigid pavements and to limit curling and warping stresses
resulting from drying shrinkage and contraction and from temperature and moisture
gradients in rigid pavements.
Longitudinal construction joints are the edges of paving lanes. Transverse construction
joints occur at the end of a paving lane concrete pour or at a partial panel replacement.
3-6.10.1.2 Expansion Joints. Expansion joints are constructed to allow pavements
to expand and contract without damage to adjacent pavements or structures.
3-6.10.1.3 Slippage Joint. A slippage joint is an expansion joint at locations where
slippage between two adjacent pavements will occur.
3-6.10.1.4
Special Joints. See UFC 3-260-02 for a discussion of special joints.
3-6.10.2
Recommended Joint Spacing
3-6.10.2.1 Transverse Contraction Joint Spacing. Table 3-4 lists recommended
transverse joint spacing (UFC 3-260-02).
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