Bar end heads

Bar end heads

ComBAR® bar end heads are used to reduce the embedment length of straight bars in geometrically constrained reinforcement situations or as shear reinforcement in diaphragm walls and drilled piles (double headed bolts). ComBAR® bar end heads are made of polymeric concrete. They are cast onto the ends of straight ComBAR® bars. Their long-term behaviour / durability is governed by the behaviour of the bar. Long-term pull-out tests have been performed on bar end heads cast into highly alkaline concrete cubes.

Dimensions, characteristic values anchorage forces of headed end

bar diameter
(mm)

head length
(mm)

ext. head
diam.
(mm)

F
short term
(kN)

F
long-term (100 yrs.)
(kN)

13

60

30

50

25

16

100

40

100

59

20

100

50

180

90

The total developed force of a ComBAR® bar with a headed end is the sum of the force anchored by the head and the additional force developed along the bar. Analogously, the total development length is the sum of the length of the head and the additional development length along the bar.

Share