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FIXING OF REINFORCEMENT BARS AND ANCHORS WITH BETEC MORTARS
Because Betec mortars adhere particularly well to concrete and steel, these materials are eminently suitable to bond reinforcement bars and anchors to all types of mineral construction materials. Vertical anchors, horizontal wall anchors and overhead vertical anchors can all be bonded using Betec cement based mortars.
Special Betec moulding mortars can be used for floor anchors. Because the space between the an-chor and the wall of the opening is usually limited, Betec 110, Betec 200 or Betec 801 (rapid mortar) is most suitable for this purpose.
Only Betec 110, Betec 200 or Betec 801 can be used for wall anchors if the openings can be drilled downwards min -15 C at an angle, otherwise the moulding mortar would escape from the opening. Betec AM is suitable for completely horizontal openings. This mortar has a consistency similar to cream, which makes it easy to pump and prevents its from escaping from the opening. Betec AM can also be used for overhead openings.
OPERATING METHOD
Vertical downward:
Horizontal, and vertical upward:
Table 1: acceptable force with bonding depth 10 times the anchor diameter:
M8 | M10 | M12 | M16 | M20 | M24 | M30 | ||
B15 | FR | 6,6 | 9,7 | 13,3 | 22,1 | 33,2 | 49,8 | 74,6 |
FU | 19,9 | 29,1 | 39,8 | 66,4 | 99,5 | 149,3 | 223,9 | |
B25 | FR | 9,0 | 13,2 | 18,1 | 30,2 | 45,2 | 67,9 | 101,8 |
FU | 27,1 | 39,6 | 54,3 | 90,5 | 135,7 | 203,6 | 305,4 | |
B35 | FR | 10,9 | 15,8 | 21,7 | 36,2 | 54,3 | 81,4 | 122,1 |
FU | 32,6 | 47,4 | 65,1 | 108,6 | 162,9 | 244,3 | 366,4 | |
B45 | FR | 12,1 | 17,6 | 24,1 | 40,2 | 60,3 | 90,5 | 135,7 |
FU | 36,2 | 52,8 | 72,4 | 120,6 | 181,0 | 271,4 | 407,2 | |
B55 | FR | 15,1 | 22,0 | 30,2 | 50,3 | 75,4 | 113,1 | 169,6 |
FU | 45,2 | 66,0 | 90,5 | 150,9 | 226,2 | 339,3 | 508,9 |
FR= acceptable force in calculation stage (Kn)
FU= acceptable force in failure stage (Kn)
Table 2: Adhesive stress between anchor adhesive and concrete:
Betonkwaliteit | Betontreksterkte fbk N/mm² | Aanhechtspanning G N/mm² |
B 15 | 1,1 | 2,2 |
B 25 | 1,5 | 3,0 |
B 35 | 1,8 | 3,6 |
B 45 | 2,0 | 4,0 |
B 60 | 2,5 | 5,0 |
Table 3: Edge and axial distances:
M8 | M10 | M12 | M16 | M20 | M24 | M30 | |
Rand afstand |
80 | 100 | 120 | 160 | 200 | 240 | 300 |
As afstand |
160 | 200 | 240 | 320 | 400 | 480 | 600 |