Fire Evaluation. From the original report n Date: 09/12/2013

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1 Department Structures, Safety and Fire (DSSF) Division Mechanical Resistance and Fire (MRF) Fire Evaluation From the original report n Date: 09/12/ st Issue Product: PURE150-PRO injection system Design concept in terms of fire protection for post installed rebars Client: DeWalt Stanley Black & Decker Deutschland GmbH Idstein, Germany Author: Dr.-Ing. Nicolas Pinoteau This evaluation comprises 9 pages, including 6 appendices. This document is based on the fire evaluation of post-installed rebars CSTB report n

2 1. Fire Evaluation The CSTB received the demand from DeWalt, Stanley Black & Decker Deutschland GmbH on 04/11/2013 requesting a fire evaluation for post installed rebars using the PURE150-PRO injection system. 2. Documents on which the evaluation is based [1] The fire evaluation report n PURE150-PRO, DeWalt, Stanley Black & Decker Deutschland GmbH, CSTB. [2] [3] [4] [5] [6] ISO Fire resistance Tests - Element of building construction Part1 general requirements EN Fire resistance tests Part 1 General Requirements. NF EN Eurocode1 Actions on structures Part 1-2: General actions - Actions on structures exposed to fire, 2003 NF EN (+NA) Eurocode2 Design of concrete structures Part 1-2: General rules Structural fire design, NF EN (+NA) Eurocode3 Design of steel structures Part 1-2: General rules Structural fire design, Description of the evaluated items Bar diameters from Φ 8 to 32 mm are evaluated to fire for anchorage depths between 80 and 480 mm in C20/25 concrete. Two structural configurations are considered: the slab-slab connection and the slab-wall connection. 4. Design concepts in terms of fire protection The outputs of this evaluation are: - the maximal applicable bond stresses that can be used in the case of a slab-slab connection, - the maximal applicable s that can be used in the case of a slab-wall connection. The design method is described in the CSTB report n [1] and has 4 main steps (represented in figure 1). First, pullout tests are carried out at ambient temperature in order to determine a relationship between bond resistance and temperature. Secondly, a thermal calculation is carried out to determine the temperature profile along the rebar at each time during a fire. Thirdly, the bond resistances are associated to the temperatures using the two first steps. Finally, the is calculated by integration of the bond resistances. Thermal calculations, geometric considerations and safety coefficients are determined in accordance with Eurocode and standards [2-6]. The thermal analysis (step 2) is presented in the CSTB report n Page 2

3 Experiment: rk = f(t) Finite Element simulation: For each fire exposure duration T along the bonding interface rk along the bonding interface Where: Figure 1: Method to determine the applicable s in fire conditions rk is the characteristic bonding resistance. T is the temperature. F bk is the characteristic maximum applicable to the rebar at a given time. L is the embedment length. Ф is the rebar diameter. Characteristic maximal F bk = Ф. π. L τ rk T x. dx 0 Champs-sur-Marne, 25/11/2013 Dr.-Ing. Nicolas Pinoteau List of appendices Appendix 1.1: Maximum applicable bond stresses for a slab-slab connection Appendix 2.1: Maximum applicable s for a slab-wall connection for Φ 8 and 10 mm Appendix 2.2: Maximum applicable s for a slab-wall connection for Φ 12 and 14 mm Appendix 2.3: Maximum applicable s for a slab-wall connection for Φ 16 and 20 mm Appendix 2.4: Maximum applicable s for a slab-wall connection for Φ 22 and 24 mm Appendix 2.5: Maximum applicable s for a slab-wall connection for Φ 25 and 32 mm Page 3

4 Appendix 1.1: Maximum applicable bond stress for a slab-slab connection The table presents characteristic bond resistances for a Slab-Slab connection using C20/25 concrete and rebars with a yield strength f y=500 N/mm² in an ISO fire (at 30, 60, 90, 120, 180 and 240 min) for concrete covers between 30 and 220 mm. temperature conditions before being designed in fire PURE150-Pro Concrete cover (mm) Characteristic maximal bond stress (N/mm²) R 30 R 60 R 90 R 120 R 180 R ,4 40 0,8 50 1,6 0,3 60 3,2 0,5 70 0,9 0,4 80 1,6 0,6 0,3 90 2,6 0,9 0, ,3 0,7 0, ,0 1,0 0, ,0 1,4 0,6 0, ,1 0,8 0, ,9 1,0 0,5 3, ,4 0, ,5 1,9 0, ,5 1,2 3, ,3 1,5 3, , ,5 3, , ,5 The present table is aimed at supplying data for the design of the injection anchoring system when exposed to fire. This study does not deal with the mechanical design at ambient temperature, neither does it deal with the design according to other accidental solicitations, these shall be done in addition. Page 4

5 Appendix 2.1: Maximum applicable s for a slab-wall connection for Φ 8 and 10 mm The table presents characteristic resistances for a Wall- 90, 120, 180 and 240 min) for Ф 8 and 10 mm. diameter Drill hole diameter maximum anchorage depth 80 5,3 1,7 0,9 0,6 0,5 0,5 95 9,9 3,1 1,6 1,1 0,9 0, ,8 5,4 2,6 1,9 1,2 1, ,5 9,3 4,3 2,9 2,0 1, ,2 12,6 6,1 4,0 2,5 2, ,4 7,1 4,7 2,8 2, ,5 11,2 7,3 4,2 3, ,2 16,3 11,0 6,1 4, , ,2 15,7 8,5 5, ,2 19,3 10,9 7, ,1 12,1 7, ,2 14,9 9, ,6 10, ,7 13, ,2 16, , , , ,2 4,2 2,2 1,7 1,2 1, ,5 7,1 3,6 2,6 1,9 1, ,7 12,1 5,7 4,0 2,6 2, ,4 18,3 9,3 6,2 3,7 3, ,3 20,8 10,9 7,1 4,3 3, ,8 14,3 9,6 5,4 4, ,8 20,6 14,3 7,8 5, ,3 25,5 18,0 9,8 7, , ,9 20,2 11,0 7, ,9 26,9 15,2 10, ,3 32,0 18,8 12, ,5 20,6 13, ,3 24,8 16, ,0 18, ,0 23, ,3 30, , ,3 Page 5

6 Appendix 2.2: Maximum applicable s for a slab-wall connection for Φ 12 and 14 mm The table presents characteristic resistances for a Wall- 90, 120, 180 and 240 min) for Ф 12 and 14 mm. Drill hole maximum anchorage diameter diameter depth ,1 9,0 4,7 3,4 2,5 2, ,7 14,7 7,3 5,1 3,4 3, ,1 22,0 11,5 7,5 5,0 4, ,5 30,7 17,4 11,0 7,1 5, ,2 24,8 15,8 9,9 7, ,3 33,2 22,0 13,8 10, ,5 39,3 26,9 17,2 12, ,5 29,5 19,1 13, , ,5 37,9 25,6 18, ,5 43,9 30,6 21, ,0 33,2 23, ,5 41,6 30, ,6 38, ,5 43, , , , ,0 18,2 9,3 6,8 4,3 4, ,1 23,8 12,6 8,8 5,4 5, ,2 30,0 16,6 11,5 6,8 5, ,7 36,8 21,4 14,7 8,5 7, ,0 43,9 27,2 18,9 10,6 8, ,5 33,4 23,9 13,2 10, ,5 40,2 29,5 16,3 12, ,5 47,4 35,7 20,2 15, ,9 54,8 42,2 24,7 18, , ,0 58,7 45,6 27,3 20, ,6 49,2 30,0 22, ,6 56,5 35,7 26, ,0 64,3 41,9 31, ,0 48,4 37, ,0 55,3 43, ,4 49, ,0 55, ,0 62, , ,0 Page 6

7 Appendix 2.3: Maximum applicable s for a slab-wall connection for Φ 16 and 20 mm The table presents characteristic resistances for a Wall- 90, 120, 180 and 240 min) for Ф 16 and 20 mm. Drill hole maximum anchorage diameter diameter depth ,7 31,4 16,9 12,3 7,9 6, ,2 38,7 22,0 15,7 9,8 7, ,0 46,6 27,9 19,9 12,1 9, ,7 55,0 34,6 25,0 15,1 11, ,6 59,3 38,2 27,9 16,6 12, ,7 41,8 30,9 18,5 13, ,8 49,5 37,6 22,7 16, ,1 57,8 44,9 27,8 20, ,6 66,3 52,5 33,5 23, , ,6 75,1 60,5 39,9 28, ,3 68,8 46,7 33, ,6 77,5 54,0 39, ,6 86,5 61,8 46, ,6 69,9 52, ,6 78,2 60, ,8 67, ,8 75, ,6 83, , , ,4 70,3 45,0 33,1 20,3 16, ,9 86,5 58,5 44,4 27,2 21, ,1 92,1 63,2 48,6 29,8 23, ,4 73,3 57,3 36,2 27, ,1 89,0 71,6 46,9 34, ,1 105,4 86,8 59,3 44, ,1 122,6 102,8 73,0 55, , ,3 119,5 87,4 68, ,1 136,8 102,9 81, ,5 119,4 96, ,1 125,0 101, ,3 111, ,7 127, ,1 133, , ,1 Page 7

8 Appendix 2.4: Maximum applicable s for a slab-wall connection for Φ 22 and 24 mm The table presents characteristic resistances for a Wall- 90, 120, 180 and 240 min) for Ф 22 and 24 mm. Drill hole maximum anchorage diameter diameter depth ,1 101,2 69,6 53,4 32,9 25, ,9 113,8 80,6 63,0 39,7 30, ,0 120,2 86,2 68,2 43,5 32, ,7 92,1 73,3 47,5 35, ,7 103,9 84,1 56,0 41, ,9 116,0 95,3 65,2 48, ,3 128,5 107,1 75,1 57, ,8 141,4 119,1 85,4 65, ,0 154,5 131,5 96,3 75, , ,7 144,1 107,4 84, ,0 157,0 119,2 95, ,0 170,0 131,2 106, ,2 143,6 117, ,0 156,2 128, ,9 140, ,0 152, ,0 165, , , ,2 135,8 87,9 70,3 45,6 35, ,5 106,2 86,9 58,2 44, ,8 125,3 104,8 72,7 56, ,5 145,5 123,7 88,5 69, ,5 166,3 143,5 105,6 84, ,2 173,3 150,1 111,5 89, ,4 163,8 123,7 100, , ,1 184,6 142,7 117, ,2 206,0 162,5 135, ,2 183,0 154, ,0 173, ,3 194, ,2 200, , ,2 Page 8

9 Appendix 2.5: Maximum applicable s for a slab-wall connection for Φ 25 and 32 mm The table presents characteristic resistances for a Wall- 90, 120, 180 and 240 min) for Ф 25 and 32 mm. Drill hole maximum anchorage diameter diameter depth ,5 155,9 104,0 84,6 56,0 43, ,3 117,1 96,6 65,5 50, ,2 130,6 109,1 75,6 58, ,3 144,4 122,2 86,5 67, ,5 158,7 135,5 98,0 77, ,9 173,1 149,4 109,9 87, ,5 187,9 163,5 122,5 98, ,6 177,8 135,4 110, , ,8 192,4 148,6 122, ,2 207,1 162,4 134, ,5 222,0 176,4 147, ,1 190,6 160, ,5 205,2 174, ,8 188, ,6 202, ,5 216, , , ,1 347,0 249,5 200,3 153,4 127, ,9 268,3 218,0 169,1 141, ,7 287,2 236,0 185,5 156, ,1 306,3 254,3 202,3 172, ,6 272,8 219,5 188, ,0 291,6 237,2 204, ,5 310,5 255,2 221, ,4 329,6 273,6 238, , ,1 348,8 292,0 256, ,4 310,8 274, ,0 329,8 292, ,1 348,8 311, ,1 329, ,7 348, ,1 367, , ,1 Page 9