Method for installing a thermal insulation element and mounting set with installation template

Abstract

A method for installing a thermal insulation element for thermal decoupling between load-bearing building components made of concrete is described, preferably between a vertical building component, in particular a column, and a horizontal building component above or below it, in particular a floor slab or a foundation slab. The thermal insulation element has a base body that consists at least partially of a compressive force-transmitting and thermally insulating material and has an upper and a lower bearing surface for vertical connection to the building components. Furthermore, the base body has several recesses penetrating it vertically from the upper to the lower bearing surface, which serve as passageways for rod-shaped reinforcing elements, in particular reinforcing bars, extending essentially vertically beyond the upper and lower bearing surfaces.For the installation of the thermal insulation element, it is planned that the rod-shaped reinforcing elements are embedded in concrete in the lower part of the building, and that a planned joint is provided between the lower part of the building and the thermal insulation element, into which a mortar bed is placed after the lower part of the building has hardened when the thermal insulation element is installed.

Description

[0001] The present invention relates to a method for installing a thermal insulation element for thermal decoupling between load-bearing building components made of concrete, preferably between a vertical building component, in particular a column, and a horizontal building component above or below it, in particular a floor slab or a base slab, wherein the thermal insulation element has a base body which consists at least partially of a pressure-transmitting and thermally insulating material and has an upper and a lower bearing surface for vertical connection to the building components, and the base body has several recesses penetrating it vertically from the upper to the lower bearing surface, which are designed as passageways for rod-shaped reinforcing elements, in particular reinforcing bars, which extend essentially vertically beyond the upper and the lower bearing surface.

[0002] Such a thermal insulation element is known from EP 3 112 542 A1. The reinforcing bars can be cast into the material of the thermal insulation element in a form-fitting manner or inserted into empty sleeves. Installation is carried out by pressing the thermal insulation element into the still-fresh cast-in-place concrete after the lower building section has been poured and then compacting it again, or by placing the thermal insulation element, together with the reinforcing bars penetrating it, into the formwork for the lower building section and then pouring cast-in-place concrete into the formwork until it rises from below against the thermal insulation element. However, if installed incorrectly, there is a risk that a weak intermediate layer will form between the lower building section and the thermal insulation element due to rising air bubbles and / or pore water in the concrete. Subsequent sealing of this joint with grout requires a circumferential seal around the element and possibly...Additionally, there is a grouting opening in the element, which creates a thermal bridge after grouting. Furthermore, there is a risk of incomplete grouting, which – if at all – can only be detected after the grouting material has hardened and the sealant has been removed, requiring subsequent repair.

[0003] The present invention aims to provide an improved method for installing a thermal insulation element of the type mentioned at the outset, in which these disadvantages do not exist.

[0004] The problem is solved by a method with the features of claim 1. Furthermore, the invention relates to an assembly set comprising a thermal insulation element of the type mentioned above and an installation template preferred for carrying out the method according to claim 9. Advantageous embodiments can be found in the dependent claims.

[0005] According to the invention, the installation of the thermal insulation element is provided by embedding the rod-shaped reinforcement elements in the lower part of the building and by providing a planned joint between the lower part of the building and the thermal insulation element, into which a mortar bed is placed after the lower part of the building has hardened during the installation of the thermal insulation element.

[0006] By initially embedding only the rod-shaped reinforcing elements in the lower part of the building instead of the thermal insulation element, the thermal insulation element can be subsequently connected to it using a mortar bed after the concrete has hardened. This eliminates the need for a seal or a grouting opening, and also prevents the risk of incomplete grouting.

[0007] To ensure that the rod-shaped reinforcement elements still fit reliably through the openings of the thermal insulation element even after the concrete has been poured, an installation template for the reinforcement elements is helpful and is included in the invention.

[0008] In a preferred embodiment of the method, formwork with reinforcement for the lower building section is first constructed. The rod-shaped reinforcement elements are then installed and adjusted within the formwork using an installation template. This template has recesses for the rod-shaped reinforcement elements, the spacing of which corresponds to that in the thermal insulation element. Subsequently, the formwork is filled with fresh concrete to construct the lower building section. During this process, the rod-shaped reinforcement elements, which protrude upwards and are held in position by the installation template, are embedded within the concrete in the lower building section.

[0009] After the fresh concrete has hardened, a mortar bed is applied around the rod-shaped reinforcing bars protruding from the lower part of the building. The thermal insulation element is then placed onto the mortar bed in such a way that the rod-shaped reinforcing bars protrude through the openings in the thermal insulation element. The upper part of the building can then be constructed over the thermal insulation element in the conventional manner, and the protruding reinforcing bars can be embedded in concrete within it, resulting in continuous reinforcement between the lower and upper parts of the building.

[0010] The process may involve removing the installation template before applying the mortar bed. Specifically, the removed template may leave a recess in the hardened concrete, which is then filled with the mortar bed. In this case, the installation template simultaneously serves as the recess element. This way, the joint, which is later filled with mortar, lies within the lower part of the building, which in this case could be, for example, a floor slab, rather than on top of it. Depending on the material of the thermal insulation element, this can offer advantages in terms of fire protection or structural integrity.

[0011] Additionally, it may be provided that the installation template, and thus the recess left in the hardened concrete, has at least the circumferential dimensions of the pressure-transmitting bearing surface of the base body of the thermal insulation element.

[0012] When dimensioning the installation template, it is advisable that the entire load-bearing connection surface of the thermal insulation element will later be mortared in place. The recess may therefore be slightly larger, but should not be smaller than the load-bearing connection surface of the thermal insulation element. For typical construction tolerances and to facilitate removal of the template with a beveled edge, the recess can preferably be made slightly larger.

[0013] For a thermal insulation element that only partially consists of pressure-transmitting and simultaneously insulating material, i.e., which has, for example, an additional insulating ring around the outside, the installation template can also be chosen to be significantly smaller than the circumference dimensions of the thermal insulation element.

[0014] In a further preferred embodiment, it may be provided not only to have one, but two vertically spaced installation templates in order to hold the rod-shaped reinforcement elements securely in position during concreting and to prevent subsequent misalignment of the reinforcement elements, so that they fit through the recesses of the thermal insulation element after hardening.

[0015] If the installation template is made of a lightweight plastic, the thermal insulation element can be placed on top of it as a weight to prevent it from floating during the pouring of the fresh concrete. This ensures that the reinforcing bars protrude through the recesses in the thermal insulation element. After the fresh concrete has hardened, the thermal insulation element is removed before being replaced after the installation template has been removed and the mortar bed applied. In this case, the reinforcing bars are held in position during concreting not only by the installation template but also by the thermal insulation element, which acts as a second, vertically spaced installation template.

[0016] As an alternative to a removable installation template, it can also be provided that the installation template is embedded in the fresh concrete and remains there after hardening. If the installation template is intended to remain in the lower concrete part of the building, it is recommended that it be designed in a skeletal form.

[0017] An assembly set suitable for carrying out the method comprises a thermal insulation element for thermal decoupling between load-bearing building components to be constructed of concrete, preferably between a vertical building component, in particular a column, and a horizontal building component above or below it, in particular a floor slab or a base slab, wherein the thermal insulation element has a base body which consists at least partially of a pressure-transmitting and thermally insulating material and has an upper and a lower bearing surface for vertical connection to the building components, and the base body has several recesses penetrating it vertically from the upper to the lower bearing surface, which are designed as passages for rod-shaped reinforcing elements, in particular reinforcing bars, which extend essentially vertically beyond the upper and the lower bearing surface.Furthermore, the assembly kit includes an installation template which has recesses for the rod-shaped reinforcement elements, the mutual spacing of which corresponds to that of corresponding recesses in the thermal insulation element.

[0018] Suitable materials for the thermal insulation element include mineral materials such as lightweight concrete, but also non-mineral materials such as fiber composite panels with predominantly horizontally arranged, high-load-bearing fibers, whose matrix can consist of synthetic resin or the like.

[0019] The thermal insulation element can also be equipped with a grouting opening or an opening for inserting a compaction device. However, this is not necessary within the scope of the invention, and it proves advantageous that such an opening can be omitted, as this prevents a thermal bridge from forming due to concrete or mortar penetrating the opening.

[0020] The installation template can consist of a material that can be destroyed for removal after the installation of the rod-shaped reinforcement in fresh concrete, in particular plastic material, such as a rigid foam board made of polyurethane (PUR), extruded polystyrene (XPS) or expanded polystyrene (EPS).

[0021] An alternative to the easily destructible installation template is a template with low adhesion on its underside surface. For example, appropriately prepared wooden formwork panels can be used as installation templates within the scope of the invention, especially if the side edge has a demolding chamfer (i.e., cut at a 45° angle of the saw blade). Generally, any molded part with a coated or sufficiently smooth and non-absorbent surface, such as a silicone or elastomer molded part, would work as an installation template. The advantage of a low-adhesion version would be that the installation template could be reused; it would essentially be a reusable template that does not need to be destroyed during removal.

[0022] The installation template can have at least the circumferential dimensions of the thermal insulation element or its statically effective connecting surface, so that the installation template can simultaneously be used as a recess element and leaves a depression or recess in the hardened concrete that corresponds to the circumferential dimensions of the thermal insulation element.

[0023] Preferably, the installation template has fixing means at the recesses, in particular in the form of snap clips, for fixing rod-shaped reinforcement elements inserted through them. This allows the reinforcement elements to be detachably connected to the installation template and installed as a whole in the formwork for a lower building section.

[0024] As another option for securing the reinforcing bars in the recesses of the installation template, fasteners can be supplied separately, which are then simply snapped into place on the bars. For example, clips can be snapped into place below the template so that the template rests loosely on it. Additional clips can then be attached above the template to the reinforcing bars, clamping the template in between. If the locking action of such clips is sufficiently strong and the reinforcing bars are externally threaded as usual, the clips can be tightened similarly to nuts on threaded rods.

[0025] Alternatively, as already mentioned, the installation template can of course also be designed as a skeleton and intended to remain in the lower concrete part of the building.

[0026] Preferably, the mounting kit can also include suitable rod-shaped reinforcement elements that can be inserted through the openings in the thermal insulation element. Reinforcing bars made of a fiber composite material or stainless steel are preferably used, as they have low thermal conductivity and therefore do not create significant thermal bridges through the thermal insulation element.

[0027] Further advantages and features of the invention will become apparent from the following description of exemplary embodiments with reference to the figures. These show: Figure 1 shows a first embodiment of an installation template, Figures 2a to 2c show alternative embodiments of installation templates, Figure 3 shows the installation template made of Figure 1 connected with reinforcing bars for installation in formwork, Figure 4a a section of formwork for a concrete slab in a first embodiment, Figure 4 legs in the formwork of Figure 4aReinforcement created for the concrete slab, Figure 4c. Installation of the installation template provided with the reinforcing bars into the formwork made of Figure 4b Figure 4d: removal of the installation template after concreting and setting of the fresh concrete; Figure 4e: placement of a mortar bed into the recess created by the installation template and insertion of a thermal insulation element; Figure 4f: the thermal insulation element installed on the concrete slab as a base for a concrete column to be built above it; Figure 5a: a cross-section through a second embodiment with the installation template made of Figure 2cAfter the concrete slab has been poured, Figure 5b shows the application of the mortar bed and placement of the thermal insulation element in the second embodiment, Figure 5c shows the thermal insulation element fully installed on the concrete slab in the second embodiment, Figure 6a shows a variant for installing the reinforcing bars with two installation templates, Figure 6 shows a variant for installing the reinforcing bars where the thermal insulation element acts as a second installation template, Figures 7 to g show an embodiment for installing a thermal insulation element as a column head, Figures 8 to d show a variant of the in Figures 7d to g The steps shown before the formwork is removed from the concrete column, Figures 9a to f, show a further embodiment for the installation of a thermal insulation element as a column head using an installation template according to Figure 2c and figures 10abs c a variant of the in Figures 9d to f The steps shown are taken before the formwork is removed from the concrete column.

[0028] A first embodiment of an installation template is shown in Figure 1 The installation template 10 is designed as a cuboid component made of a dimensionally stable rigid foam material such as polyurethane (PUR) or polystyrene (PS) and is provided with four recesses 11 or through-holes extending from the top to the bottom surface. The arrangement of the recesses 11 corresponds exactly to the recesses in a thermal insulation element, which is to be installed in place of the installation template after the building section has been constructed. The cuboid installation template 10 serves to create a load-bearing concrete column of the corresponding cross-section, anchored to a concrete slab.

[0029] Alternative embodiments for mounting templates 10a, 10b with different cross-sections are described in the Figure 2a and 2b shown. The installation template 10a is used for this purpose. Figure 2afor the construction of a concrete column with a round base, the installation template 10b in Figure 2b for the construction of a concrete column with an oval cross-section.

[0030] In Figure 2c Finally, another embodiment of an installation template 10c in skeletal form is shown. This consists of two cross-connected struts 12, at the free ends of which a slotted, annular eyelet is provided as a recess 11c, with which reinforcing bars can be held at a defined distance. The skeletal installation template 10c is intended as a permanent component to remain embedded in the concrete of a building element and can be made, for example, of conventional structural steel or plastic.

[0031] In Figure 3It can be seen that four reinforcing bars 14 are inserted through the recesses 11 of the installation template 10. Retaining clips 13 around the recesses 11 on the underside of the installation template 10 form a snap connection with the reinforcing bars 14 and secure them against falling out. In the form shown, the installation template 10 with the reinforcing bars 14 is prepared for installation in formwork for a building component to be cast in concrete.

[0032] The Figures 4a to 4f This section shows the individual steps for installing a thermal insulation element as a base or foot for a load-bearing column made of concrete in a building. First, as shown in... Figure 4a Shown as a section, a formwork 20 for a lower part of the building, in this case a floor slab or floor ceiling, was created.

[0033] The formwork 20 consists, in a manner known per se, of a lower formwork panel 21 and the surrounding edge formwork elements 22.

[0034] In the next step, as in Figure 4b to be seen, within the formwork 20 a reinforcement 24 made of double-layered and conventionally connected reinforcement mats 25 was created.

[0035] In the next step, as in Figure 4c to see those in Figure 3 The prepared installation template 10, with the inserted reinforcing bars 14, is placed in the formwork 20 and adjusted. The reinforcing bars 14 can be attached to the reinforcing mats 25 of the reinforcement 24 in the intended position, for example, using tie wire. The installation template 10 holds the reinforcing bars 14 at the intended distance from each other, so that the thermal insulation element, which has corresponding dimensions and recesses, can later be installed in place of the installation template 10.

[0036] Fresh concrete 26a for the base slab 26 can now be poured into the formwork 20 up to the intended height and compacted. After it has set, the formwork 20 can be removed and, as described in Figure 4d The installation template 10 can be removed. This can also be done by destroying the installation template 10. This leaves a recess 27 in the hardened building section 26, the dimensions of which correspond at least to those of the thermal insulation element 30 to be installed subsequently. In the first embodiment, the installation template 10 thus also acts as the recess element. Thanks to the installation template 10, the reinforcing bars 14 are anchored in the building section 26 at the correct distance from each other.

[0037] The thermal insulation element 30 has a base body that consists at least partially of a compressive force-transmitting and thermally insulating material and has an upper and a lower bearing surface 30a, 30b for vertical connection to the building components to be erected above and below it. The base body also has several recesses 31 penetrating vertically from the upper to the lower bearing surface 30a, 30b, which serve as passageways for the reinforcing bars 14. The thermal insulation element 30 can, for example, be manufactured as a precast element made of lightweight concrete and may optionally be surrounded by additional insulation.

[0038] After removing the mounting template 10, the recess 27 can be opened as shown in Figure 4e shown, filled with a mortar bed 28 and the thermal insulation element 30 with its recesses 31 placed on the upwardly protruding reinforcing bars 14 and pressed down onto the mortar bed 28.

[0039] In Figure 4eAn excess 32 is shown by which the recess 27 is larger than the thermal insulation element 30, so that the entire lower contact surface 30b lies on the mortar bed within the plan view of the recess 27.

[0040] The fully installed thermal insulation element 30 is in Figure 4f The recess 27 is filled with mortar 28 up to the top edge 26b of the concrete slab 26, on which the thermal insulation element 30 sits. The reinforcing bars 14 protrude from the thermal insulation element 30. Next, a concrete column can be constructed above the thermal insulation element 30 by building formwork around the thermal insulation element with reinforcement for the column and filling it with ready-mix concrete. The reinforcing bars 14 are embedded in the column and monolithically connect the column and the base slab.

[0041] The Figures 5a, 5b and 5c show a second embodiment in which the in Figure 2cThe skeletonized installation template 10c shown is used. This is also fitted with the reinforcing bars 14 and thus prepared for installation in the formwork 20, which is then filled with fresh concrete 26a. As shown in Figure 5a As can be seen, the skeletal installation template 10c is embedded in the concrete 26a of the base plate 26 and remains there. A recess as in the first embodiment is not provided here.

[0042] After hardening and demolding, a mortar bed 28 can be applied around the upwardly protruding reinforcing bars 14 on the top of the base plate 26 (see Figure 5b ) and, as in the first embodiment, the thermal insulation element 30 with its recesses 31 is guided over the reinforcing bars 14 and pressed down onto the mortar bed 28. The finished installation state is shown in Figure 5cto be seen. Unlike in the first embodiment, the lower edge of the thermal insulation element 30 does not align with the upper edge of the base plate 26, since the joint between them is filled with the mortar bed 28.

[0043] The mortar bed 28 thus forms or fills a planned joint between the upper and lower concrete building sections. In the first embodiment, the joint is located within the lower building section 26, and in the second embodiment, above it. Suitable dimensions for the joint or mortar bed 28 are in the range of 1-3 cm.

[0044] A variant with two mounting templates is available in Figure 6aThe reinforcing bars 14 are inserted through two vertically spaced installation templates 10, 10' and detachably connected to them. The prepared installation templates 10, 10' are then inserted into the formwork 20, and the reinforcing bars 14 are connected to the reinforcing mats 25. Fresh concrete can then be poured into the formwork 20. After the concrete has hardened and the formwork 20 and the installation templates 10, 10' have been removed, the process can be repeated as described in [reference to relevant section]. Figures 4e and f As shown, a mortar bed 28 is placed into the recess created by the lower installation template 10 and the thermal insulation element 30 with its recesses 31 is placed on the reinforcement bars 14 that have been embedded in concrete to the correct dimensions.

[0045] Another variant for the dimensionally accurate installation of the reinforcing bars 14 using installation template 10 is in Figure 6bshown. There, the thermal insulation element 30 itself acts as a second installation template and simultaneously as a weight for the installation template 10. After the installation of the installation template 10, which is detachably connected to the reinforcing bars 14, the thermal insulation element was simply placed with its recesses 31 onto the reinforcing bars 14, which are attached to the reinforcing mats 25 with tie wire, and rests loosely on the installation template 10. Subsequently, even in the Figure 6b In the variant shown, fresh concrete is poured in. After the concrete has set, the formwork is removed and first the thermal insulation element 30 is removed, followed by the installation template. Then, as shown in the Figures 4e and f As shown, a mortar bed 28 is placed into the recess created by the lower installation template 10 and the thermal insulation element 30 with its recesses 31 is placed on the reinforcement bars 14 that have been embedded in concrete to the correct dimensions.

[0046] The described embodiments each show the installation of a thermal insulation element 30 as a connection between a vertical component (column or wall) and a horizontal component (floor slab or floor slab). However, the reverse case is also conceivable and included within the scope of the invention, in which the thermal insulation element serves to connect a horizontal building component (floor slab) to a vertical building component (column or wall). In this case, the installation template 10, including the reinforcing bars 14, is installed in the formwork of the vertical building component (column). Before or after this, the formwork is filled with fresh concrete. Once the concrete has hardened, the installation template 10 is removed, and after applying a mortar bed, the thermal insulation element 30 is inserted.

[0047] A first embodiment for the installation of a thermal insulation element as a column head is shown in the Figures 7a to g as shown. First, as in Figure 7aThe diagram shows how to create a formwork 20 for a column to be concreted, using a reinforcement cage 24. The formwork 20 is then filled with fresh concrete 26a ( Fig. 7b ).

[0048] Now the installation template 10, equipped with the reinforcing bars 14, is inserted from above into the formwork filled with fresh concrete 26a ( Fig. 7c The installation template can be provided with an opening 29, as shown in this embodiment, through which a vibrator can be guided for further compaction of the fresh concrete 26a.

[0049] It proves advantageous if the installation template is slightly compressible and has a slight excess compared to the support to be created, so that the installation template wedges itself into the formwork of the support in a self-locking and all-around sealing manner.

[0050] In Figure 7cIt can also be seen that the installation template 10 does not need to be pressed down to the fresh concrete 26a, but that a certain distance to the fill level of the fresh concrete 26a can remain.

[0051] After the fresh concrete 26a has hardened and the in Figure 7d The formwork shown is removed from the installation template 10. The reinforcing bars 14 are now, as shown in Figure 7e shown, anchored to the correct dimensions in support 26'. Now the mortar bed 28 can be applied ( Fig. 7f ) and the thermal insulation element 30 with its recesses for the reinforcing bars is placed on top of these and, if necessary, tapped slightly with a hammer.

[0052] Alternatively, as in the Figures 8 a to d As shown, the thermal insulation element can also be installed before the formwork for the column is removed. For this purpose, after the fresh concrete 26a has hardened, it is first installed as shown in Figure 8aThe installation template 10 has been removed from the formwork. Now a mortar bed 28 can be poured around the reinforcing bars 14 in the formwork 20 ( Fig. 8b Then in Figure 8c The thermal insulation element 30 is placed onto the reinforcing bars and, if necessary, lightly tapped into place with a hammer. After the mortar 28 has set, the formwork 20 can be removed ( Fig. 8d ).

[0053] The first option has the advantage that the formwork can be removed as soon as the column concrete has hardened, and the resulting freed-up formwork 20 can then be used to prepare the next column. This saves a whole day if the number of formwork units available to a construction company is limited. However, a slightly stiffer mortar 28 must be used, which needs to be troweled between the reinforcing bars 14 rather than simply poured.

[0054] One advantage of the second variant is that a thinner mortar 28, for example a grouting mortar, can be used, which reliably fills the joint automatically during pouring. The existing formwork 20 keeps the thin mortar in the joint between the column concrete 26 and the thermal insulation element 30.

[0055] Another embodiment for installing the thermal insulation element as a support head is shown in the Figures 9a to f shown. As in the previous embodiment in Figure 7a As shown, a formwork 20 is first erected around a reinforcement 24 for the column to be built. As shown in Figure 9b In this embodiment, a skeletonized installation template 10c can be seen according to Figure 2c for use. The reinforcing bars 14 connected to the installation template 10c are inserted into the formwork and fastened to the reinforcement 24 using tie wire. Now, as in Figure 9cAs shown, fresh concrete 26a is poured into the formwork 20 and compacted. The installation template is enclosed in the fresh concrete 26a and remains there. After the concrete of the column 26' has hardened, the formwork can be removed ( Figure 9d ). Now the mortar bed 28 is applied around the reinforcing bars 14 protruding from the support 26' ( Figure 9e ) and as in Figure 9f to see, the thermal insulation element 30 was placed on top and, if necessary, tapped with a hammer.

[0056] The Figures 8a-d The corresponding alternative is in the Figures 10a-c shown. Here, after the concrete of the support 26' has set, the mortar bed 28 is again poured into the formwork 20 in a flowable form ( Fig. 10a ), the thermal insulation element 30 was placed on top and, if necessary, tapped into place, and only after the mortar bed 28 had set was the formwork 20 removed ( Figure 10c ).

[0057] Within the scope of the invention, the thermal insulation element 30 itself can also be used as an installation template if the reinforcing bars 14 are not permanently connected to it, but rather inserted through corresponding recesses and secured with releasable fasteners. In this case, the thermal insulation element is removed after the lower part of the building has been poured and the concrete has hardened, the mortar bed 28 is applied, and the thermal insulation element is then guided back over the reinforcing bars 14 and pressed into the mortar bed 28. To prevent the thermal insulation element from "sticking" to the hardening concrete during pouring, it can, for example, be treated beforehand with a release agent or a separating layer (film) can be placed between it and the concrete. Alternatively, it can also be installed at a vertical distance from the fresh concrete surface, so that a gap exists between the fresh concrete surface and the underside of the thermal insulation element during the hardening of the column concrete.Such a distance can be easily achieved, for example, by using the reinforcement cage 24 of the support 26' as a spacer and leaving the upper 1-3 cm of the reinforcement cage 24 free of concrete during concreting.

Claims

1. Method for installing a thermal insulation element (30) for thermal decoupling between load-bearing building components made of concrete, preferably between a vertical building component, in particular a column (26'), and a horizontal building component above or below it, in particular a floor slab or a base slab (26), wherein the thermal insulation element (30) has a base body which consists at least partially of a compressive force-transmitting and thermally insulating material and has an upper and a lower bearing surface (30a, 30b) for vertical connection to the building components (26, 26'), and the base body has several recesses (31) penetrating it vertically from the upper to the lower bearing surface (30a, 30b), which are designed as passages for rod-shaped reinforcing elements (14), in particular reinforcing bars, which themselves extend substantially vertically beyond the upper and the lower bearing surfaces (30a, 30b). characterized by the fact thatthe rod-shaped reinforcement elements (14) are embedded in concrete in the lower part of the building (26, 26') and a joint is provided between the lower part of the building (26, 26') and the thermal insulation element (30), into which a mortar bed (28) is placed when the thermal insulation element (30) is installed after the lower part of the building (26, 26') has hardened.

2. The method according to claim 1 comprising the following steps: a) creating a formwork (20) and reinforcement for the lower part of the building (26, 26'), b) installing and adjusting the rod-shaped reinforcement elements (14) in the formwork (20) using an installation template (10, 10a-c, 10') which has recesses (11, 11a-c) for the rod-shaped reinforcement elements, the spacing of which corresponds to that in the thermal insulation element (30), c) filling the formwork (20) with fresh concrete (26a) to create the lower part of the building (26, 26'), d) after the fresh concrete (26a) has hardened, applying the mortar bed (28) around the rod-shaped reinforcement elements (14) protruding from the lower part of the building, and e) placing the thermal insulation element (30) onto the mortar bed (28) such that the rod-shaped reinforcing elements (14) protrude through the recesses (11, 11a-c) of the thermal insulation element (30).

3. Method according to claim 2, wherein the installation template (10, 10a-c) is removed before step d).

4. Method according to claim 3, wherein the removed installation template (10, 10a-c) leaves a recess (27) in the hardened concrete, which is filled with the mortar bed (28) in step d).

5. Method according to claim 4, wherein the installation template (10, 10a-c) and thus the recess (27) left in the hardened concrete have at least the circumferential dimensions of a statically effective connecting surface of the thermal insulation element (30).

6. Method according to any one of claims 2 to 5, wherein a second installation template (10') arranged vertically spaced from the first is used to position the rod-shaped reinforcement means (14) during concreting.

7. Method according to one of claims 2 to 6, wherein the thermal insulation element (30) is placed on the installation template (10, 10a-c) as a weight before step c) in such a way that the rod-shaped reinforcing means (14) protrude through the recesses (11, 11a-c) of the thermal insulation element (30), and wherein, after the fresh concrete (26a) has hardened, the thermal insulation element (30) is first removed.

8. Method according to claim 2, wherein the installation template (10c) is embedded in the fresh concrete and remains there after hardening.

9. Assembly set comprising a thermal insulation element (30) for thermal decoupling between load-bearing building components to be constructed of concrete, preferably between a vertical building component (26, 26'), in particular a column (26'), and a horizontal building component above or below it, in particular a floor slab or a base slab (26, 27), wherein the thermal insulation element (30) has a base body which consists at least partially of a compressive force-transmitting and thermally insulating material and has an upper and a lower bearing surface (30a, 30b) for vertical connection to the building components (26, 26'), and the base body has several recesses (11, 11a-c) penetrating it vertically from the upper to the lower bearing surface (30a, 30b), which serve as passages for rod-shaped reinforcement elements (14) extending essentially vertically beyond the upper and the lower bearing surfaces (30a, 30b), in particular Reinforcing bars are formed,and at least one installation template (10, 10a-c) which has recesses (11, 11a-c) for the rod-shaped reinforcement elements, the mutual spacing of which corresponds to that in the thermal insulation element (30).

10. Mounting set according to claim 9, wherein the installation template (10, 10a-c) consists of a material, in particular plastic material, that is destructible for removal after the installation of the rod-shaped reinforcement means (14) in fresh concrete (26a).

11. Mounting set according to claim 9 or 10, wherein the mounting template (10, 10a-c) has at least the circumferential dimensions of a statically effective connecting surface of the thermal insulation element (30).

12. Mounting set according to one of claims 9 to 11, wherein the installation template (10, 10a-c) has fixing means (13) in particular in the form of snap clips for fixing rod-shaped reinforcement means (14) inserted through the recesses.

13. Mounting set according to claim 9, wherein the installation template (10, 10a-c) is designed in a skeletonized form and is intended to remain in the lower concrete part of the building (26).

14. Mounting set according to one of claims 9 to 13, which additionally comprises rod-shaped reinforcement means (14) that can be passed through the recesses (31) of the thermal insulation element (30), in particular reinforcement bars made of a fiber composite material or of stainless steel.

15. Mounting set according to one of claims 9 to 14, with an additional, second mounting template (10') with recesses (11, 11a-c) for the rod-shaped reinforcement means, the mutual distances of which correspond to those in the thermal insulation element (30).

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