chapter 3 rigid pavement - DOT On-Line Publications - Department ...

FX'WA TECHKICAL ADVISORY T 5080.17
July 14, 1994
ATTACHLYENT 3
(b) Is a 1/3T deep groove being sawed over each
assembly as soon as possible after concrete
placement? Cleaned immediately?
(cl Are all joints being sealed after the curing
period and before opening to traffic?
23. TRANSVERSE CONSTRUCTION JOINTS ICONTINUOUSLY REINFORCED
CONCRETE)
(4
(b)
(cl
(d)
W
Are construction joints being placed at the
end of each day's operation or after an
interruption in the concreting operation of
30 minutes or more?
Are construction joints being placed at least
1 meter from nearest bar lap?
Are construction joints strengthened by
supplementary 1.8 meter long bars of the same
nominal diameter as the longitudinal steel so
that the area of steel through the joint is
increased by at least l/3?
Are construction joints formed.by means of a
clean (not oiled) split header board
conforming to the cross section of the
pavement?
Is the concrete at construction joints being
given supplemental internal vibration along
the length of the joint both at the end of
the day's operation and once again at the
resumption on the next day? This is
critical.
24. TRANSVERSE CONSTRUCTION JOINTS (JOINTED PAVEMENT1
(a) Are construction joints being placed at the
end of each day's operation or after an
- interruption in the concreting operation of
30 minutes or more?
(b) Are construction joints being placed at least
3 meters from any transverse joint?
3.10.38