###### Abstract
Both approaches yielded accurate predictions of fire resistance durations of cantilever connections. [PERSON] and [PERSON] [20] also attempted to adapt the method for bonded anchors under fire conditions using axisymmetric thermal modelling of the anchors, yielding conservative design values compared to fire tests. [PERSON] and [PERSON] [16; 21] presented RIM results based on 2D thermal modelling of anchors, yielding higher design capacities than fire tests in some cases (e.g., bonded anchors with insulated fixtures). [PERSON] et al. [22] validated RIM for the design of bonded anchors by investigating the parameters influencing fire tests on bonded anchors (fixtures, insulation conditions, concrete member thicknesses). The case of an anchor directly exposed to fire (i.e., using a metallic fixture and without insulating material) was identified as the most conservative testing condition [23]. [PERSON] et al. based the RIM on 3D thermal modelling and the example of M12 rods with 110 mm embedment depth yielding conservative design values compared to fire tests. In [PERSON] and [PERSON] [20], ISO 834-1 fire tests were conducted on bonded anchors in uncracked concrete using two adhesives (one epoxy and one cementitious) and a large combination of configurations for anchor sizes from M10 to M30. Their design calculations, based on 2D axisymmetric transient heat transfer, yielded conservative results for most of the cases, but for some cases the calculation yielded higher resistances compared to fire tests. At CSTB, a study was conducted on the thermal influence of testing conditions on the resulting load-bearing capacity of bonded anchors (one epoxy adhesive) under fire conditions. This study is completed on the same adhesive in this paper with loaded fire tests on two different anchor geometries (M8 and M12). Both testing campaigns were performed according to the general requirements of fire tests according to [24]. This standard gives a heating curve to be applied inside the furnace (i.e., measured temperature of hot gas inside the furnace during heating). The heating curve is derived from the ISO 834-1 standard [17]. The objective of this paper is to regroup the data from [PERSON] et al. (2018, 2019) and [PERSON] (2019) to reevaluate the calculation method (based on 3D transient heat transfer and Eurocode material properties for steel (2018) and concrete (2018, 2019)) in order to test its sensitivity to the bond stress vs. temperature relationship adopted in the RIM process. The aim is to extend the validity of RIM method for the design of bonded anchors under fire conditions for all anchor sizes and propose recommendations for the evaluation method consistent with Eurocode design requirements. The same methodology for determining bond stress vs. temperature curves for PIR in EAD 330087 is applied to bonded anchors using threaded rods. Unlike PIR, bonded anchors are not protected by a concrete cover and are directly exposed to fire, resulting in significantly higher temperatures transmitted through the steel element. The modified evaluation method is therefore assessed in this paper for bond stress vs. temperature curves with the expectation of higher temperatures. The extension of the curve should be based only on test results up to a maximum temperature respecting the 3 h and 5 \({}^{\circ}\)C/min heating rate (imposed on the exterior of the specimen) in EAD 330087. To assess the beneficial effect (increase of calculated pull-out resistance of the bonded anchor) of accounting for this extension of the bond stress vs. temperature curve, a study was conducted based on the presented calculations in this paper.