Hilti HIT FP 700-R Bedienungsanleitung Seite 23
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European technical assessment ETA-2 1 / 0 6 2 4
English translation prepared by CSTB
Essential characteristics under fire exposure
Design value of the bond strength ��
��
for a working life of 100 years, under fire exposure for concrete classes C12/15 to C50/60 for all
����,����,100��
drilling techniques have to be calculated by the following equations:
with
�� = ��
������
��
= 504°��
������
��
Design value of the bond strength in case of fire in N/mm² for a working life of 50 years.
����,����
��
Design value of the bond strength in case of fire in N/mm² for a working life of 100 years.
����,����,100��
( �� )
Temperature in °C in the mortar layer.
��
Temperature in °C at which the mortar can no longer transfer bond stresses
������
( �� )
��
Reduction factor under fire exposure for a working life of 50 years.
��,����
��
( �� )
Reduction factor under fire exposure for a working life of 100 years.
��,����,100��
��
Design value of the bond strength in N/mm² in cold condition according to Table C3 or Table C6
����,������
considering the concrete classes, the rebar diameter, the drilling method and the bond conditions
according to EN 1992-1-1 for a working life of 50 years.
��
Design value of the bond strength in N/mm² in cold condition according to Table C3 or Table C6
����,������,100��
considering the concrete classes, the rebar diameter, the drilling method and the bond conditions
according to EN 1992-1-1 for a working life of 100 years.
��
Partial factor according to EN 1992-1-1.
��
��
Partial factor according to EN 1992-1-2.
��,����
For evidence under fire exposure the anchorage length shall be calculated according to
EN 1992-1-1:2004+AC:2010 Equation 8.3 using the temperature-dependent bond strength f
Example graph of temperature reduction factor ��
Figure C1:
good bond conditions
Injection system Hilti HIT-FP 700 R for rebar connections
Performances
Bond strengths f
and f
bd,fi
Temperature reduction factors k
for a working life of 50 years and design value of the bond strength
����,����
��
= ��
( �� ) ∙ ��
����,����
��,����
��
= ��
����,����,100��
��,����,100��
−0,0038 ∙ �� + 8,6867
( �� ) =
��
��,����
��
−0,0038 ∙ �� + 8,6867
��
( �� ) =
��,����,100��
( �� ) = ��
��
��,����
��,����,100��
1,2
1,0
��
�� = −0,00038 ∙ �� + 0,8783
����
0,8
0,6
0,4
0,2
��
= 20°��
��
0,0
0
100
at increased temperature
bd,fi,100y
(θ) and k
(θ) under fire conditions
fi
fi,100y
��
��
∙
����,������
��
��,����
��
��
( �� ) ∙ ��
∙
����,������,100��
��
��,����
≤ 1,0
∙ 4,3
����,������
≤ 1,0
��
∙ 4,3
����,������,100��
( �� ) = 0,0
��,����
��
= 504°��
������
200
300
400
Temperature (°C)
Page 22 of 22 | 1 7 / 0 6 / 2 0 2 2
for a working life of 50 years
for a working life of 100 years
for a working life of 50 years
for a working life of 100 years
.
bd,fi
( �� ) for concrete class C20/25 for
500
Annex C3
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