KR102295880B1 - Insulating materials for foundation of a house including the modular structure - Google Patents

Abstract

The present invention relates to a foundation insulation material including a modular structure supporting a building load, and more particularly, a reinforcing bar formed through spaced apart from each other in the floor insulation material constructed at the lower end of the mat foundation, which is a structure supporting the entire building floor as a basis. In the insertion groove, a cylindrical reinforcing bar in which the inner structure is formed by pouring ultra-high-performance concrete (UHPC) through the structure insertion hole formed through the inside of the outer structure made of a side mold made of EPS is inserted, but the reinforcing bar is the upper reinforcing bar and the lower reinforcing bar. By forming a reinforcing bar or upper reinforcing bar, lower reinforcing bar, and central reinforcing bar by combining with each other, the insulation performance and strength are improved, and the unequal settlement can be reduced by supporting the load of the building, and the process is simplified due to less demolding and mold management. It relates to a foundation insulation material containing a modular structure.

Description

Insulating materials for foundation of a house including the modular structure

The present invention relates to a foundation insulation material including a modular structure supporting a building load, and more particularly, a reinforcing bar formed through spaced apart from each other in a floor insulation material constructed at the lower end of a mat foundation, which is a structure supporting the entire building floor as a basis. In the insertion groove, a cylindrical reinforcing bar in which the inner structure is formed by pouring ultra-high-performance concrete (UHPC) through the structure insertion hole formed through the inside of the outer structure made of an EPS material is inserted, but the reinforcing bar is the upper reinforcing bar and the lower reinforcing bar. By forming a reinforcing bar or upper reinforcing bar, lower reinforcing bar, and central reinforcing bar by combining with each other, the insulation performance and strength are improved, and the unequal settlement can be reduced by supporting the load of the building, and the process is simplified due to less demolding and mold management. It relates to a foundation insulation material containing a modular structure.

At the construction site, it is preferred to install an insulating material on the lower part of the foundation concrete for the convenience of construction by maximizing the insulation performance of the building. However, most of the insulation materials currently on the market cannot sufficiently support the load of the building, so insulation materials with structural performance to compensate for this are required.

Meanwhile, in the foundation work, the ground condition is checked first to determine the bearing capacity (the force that the ground withstands the load of the building), and based on this, the foundation method is finally determined through accurate foundation structure calculation and design.

The stem weed and the mat foundation are commonly used foundation construction methods when building houses. It is to compact rubble and construct a slab on it, and the mat foundation is a structure that supports the entire building floor as a foundation, and is suitable when the building load is heavy and the bearing capacity is low.

A mat foundation to support the load of a building is a foundation in which all or most of the upper structure is in the shape of a wide plate as if the floor structure was inverted in order to make the grounding area wider. It is used when the bearing load is heavy and the bearing capacity is low. It is mainly used in multi-family houses and commercial buildings with less than five stories.

It is known that the stem sheath installed on the edge of the building is safe because the load of the building is directly connected to the ground and the load is not transmitted to the insulation material.

However, in the case of a mat foundation, since the insulation is installed at the lower part of the foundation, the load of the building is transmitted to the insulation, but the strength to support it is not sufficient. There is a problem in that defects such as occurrence of cracks are caused.

As shown in FIG. 1, such a mat foundation is installed in the lower part of the structural material 20 installed at a predetermined height from the ground 2, in which the insulating material 10 installed in the ground 1 is installed, the underground freezing line (4) It is installed in the lower part, and the inside of the structural member 20 is configured as an indoor space (3).

In the indoor space 3 formed by such a building wall, the heat insulating material 10 is installed for thermal insulation with the outside, but the indoor space and the outside are insulated by the heat insulating material 10 installed under the structural material 20, but Styrofoam or urethane is used for these insulation materials and has a very weak strength.

Since the insulator 10 has very weak strength to support the lower portion of the structural material 20, a plurality of supports formed of cement or reinforcing bars are placed between the insulators 10 to reinforce weak strength.

At this time, if there are too many supports, the insulation is weakened. This is because the support is made of a cement or metal material, and thus heat is lost through the support. Conversely, if there are too few supports, the strength of the insulating material 10 is weakened, and thus the load of the structural material 20 cannot be properly supported.

Furthermore, since the insulating material 10 is a material having a weak structure, such as Styrofoam or urethane, the lower part must be flat, and even a small protrusion can cause cracks in the insulating material.

On the other hand, Republic of Korea Patent Laid-Open Patent No. 10-2019-0108024 Vertical compression reinforcing material insertion type hybrid insulation board and the basic structure using the same are for transferring the load from the upper part to the lower part without damage to the insulation plate, and a plurality of vertically on the same level inside the insulation material The upper and lower ends of the reinforcing materials arranged and installed coincide with the upper and lower ends of the insulator so that the reinforcing material responds to the load acting on the upper, but the upper and lower plates of the reinforcing material are wider than the pillars, and are inserted between the insulators. it is virtually impossible In addition, when the reinforcing material is integrally formed inside the insulator and the discarded concrete (IC) is not uniform, and an empty space is formed under the reinforcing material, the reinforcing material is suspended in the air and the surrounding insulation 200 is caused by the weight of the reinforcing material. There is a problem that may cause cracks. Therefore, when the discarded concrete under the reinforcing material is not uniform, there is a problem in that the insulation is damaged due to the reinforcing material.

KR20-0399631 (registration number) 2005.10.19. KR10-0787178 (registration number) 2007.12.12. KR10-2019-0036445 (public number) 2019.04.04. KR10-2019-0108024 (public number) 2019.09.23.

Accordingly, the present invention has been devised to solve the above problems,

Ultra-high-performance concrete (UHPC) in the structure insertion hole formed inside the external structure made of the side mold, in the reinforcing bar insertion groove formed through the floor insulation at a certain distance from the floor insulation installed at the lower part of the mat foundation, which is a structure that supports the entire floor of the building as a foundation ) and insert a cylindrical reinforcing bar to which the internal structure is formed, but the reinforcing bar is formed by combining an upper reinforcing bar and a lower reinforcing bar or an upper reinforcing bar, a lower reinforcing bar and a central reinforcing bar, thereby improving insulation performance and strength, The purpose of this is to provide a foundation insulation material including a modular structure, which can support the load of the structure to reduce differential settlement, and has a simplified process due to low demolding and mold management.

Another object of the present invention is that in the case of a mat foundation, the load of the building is transmitted to the insulator by installing an insulating material at the lower end of the foundation, but the strength to support it is not sufficient, so it is vulnerable to earthquakes, shaking, etc. In order to reinforce the possible shortcomings, a reinforcing bar with ultra-high-performance concrete inserted inside the insulation layer is provided to improve the strength and to withstand the load of the building. have.

Another object of the present invention is to provide a modular structure in which the reinforcing bar supporting the heat insulating material protrudes above the heat insulator and has a strong bonding force with the concrete poured over the reinforcing bar, while the middle layer of the reinforcing bar is thin and separated from each other up and down to minimize heat bridge transfer. It is to provide an included basic insulation material.

Another object of the present invention is that the external reinforcing bar is molded by itself without a side mold, so that the reinforcing bar can be manufactured only with the upper and lower molds. to provide insulation.

Another object of the present invention is to include a modular structure in which cracks do not occur in the surrounding insulation material due to the weight of the reinforcing bar as the reinforcing bar descends even when an empty space is created under the reinforcing bar because the lower cast-off concrete layer is not uniform. To provide a basic insulation material.

In order to achieve the above object, the present invention relates to a basic insulation to be constructed at the lower end of a mat foundation, which is a structure supported by the entire floor of a building, a plurality of reinforcing rod insertion holes 101 being spaced apart from each other. (100) and; It is inserted into the reinforcing bar insertion hole 101 of the heat insulation layer 100, the reinforcing bar 200 including ultra-high performance concrete (UHPC) therein; including; The reinforcing bar 200 has a T-shaped structure insertion hole 211 on the inside of the side cross-section, and an external structure 210 that forms a side mold of the internal structure 220 that is poured into the structure insertion hole 211 and , a structure to which the internal structure 220 formed by pouring UHPC mortar into the structure insertion hole 211 is formed by being separated vertically.

The reinforcing bar 200 of the present invention includes a lower reinforcing bar 200a provided at a lower portion and an upper reinforcing bar 200b provided at an upper portion of the lower reinforcing bar 200a, and the lower reinforcing bar 200a is a first external structure The first internal structure 220a formed inside the 210a, the upper reinforcement 200b includes a second internal structure 220b formed inside the second external structure 210b, and the first The external structure 210a and the second external structure 210b have the same material as the heat insulating layer 100 .

The reinforcing bar 200 of the present invention includes a lower reinforcing bar 200a provided in the lower portion, an upper reinforcing bar 200b provided in the upper portion, and a central reinforcing bar disposed between the lower reinforcing bar 200a and the upper reinforcing bar 200b ( 200c) is further included, wherein the intermediate reinforcing bar 200c includes a third internal structure 220c providing support and a third external structure 210c surrounding the outer surface of the third internal structure 220c. The material of the third internal structure 220c is different from that of the first internal structure 220a and the second internal structure 210b.

A first protrusion 221a is formed on the upper portion of the first internal structure 220a of the lower reinforcement 200a of the present invention, and a first insertion is performed on the lower portion of the second internal structure 220b of the upper reinforcement 200b. A groove 221b is formed, and a spaced distance is formed between the outer diameter of the first protrusion 221a and the inner diameter of the first insertion groove 221b.

In the present invention, a cast-off concrete layer 300 is further provided under the heat insulating layer 100 and the reinforcing bar 200, and the reinforcing bar 200 when the cast-off concrete layer 300 under the reinforcing bar 200 is non-planarized. is descended and comes into contact with the discarded concrete layer 300 .

In the central reinforcing bar 200c of the present invention, a third internal structure 220c made of a plastic material penetrating the center of the third external structure 210c is formed, and the third internal structure 220c is formed on the upper part of the third internal structure 220c. A protrusion 221c and a second protrusion 222c are formed on the lower portion, and the third protrusion is formed on the second internal structure 220b of the upper reinforcing bar 200b and the first inner structure 220a of the lower reinforcing bar 200a. A third insertion groove 222b and a second insertion groove 222a into which the 221c and the second protrusion 222c are respectively inserted are formed.

The outer diameter of the second protrusion 222c and the third protrusion 221c of the third internal structure 220c of the present invention and the second insertion groove of the first internal structure 220a and the second internal structure 220b ( A spaced interval is provided between the inner diameter of 222a) and the third insertion groove 222b.

Therefore, the foundation insulation material including the modular structure of the present invention is formed through a reinforcing rod insertion groove spaced apart from the floor insulation material installed at the lower end of the mat foundation, which is a structure supporting the entire building floor as a basis, at a predetermined interval. A cylindrical reinforcing bar on which an internal structure is formed by pouring ultra-high-performance concrete (UHPC) into the structure insertion hole formed inside the structure is inserted, but the reinforcing bar is combined with the upper reinforcing bar and the lower reinforcing bar or the upper reinforcing bar, the lower reinforcing bar and the central reinforcing bar By forming this, the insulation performance and strength can be improved, and it is possible to reduce uneven settlement by supporting the load of the building, as well as reduce demolding and mold management, thereby reducing material and simplifying the process.

In addition, in the case of a mat foundation, the foundation insulation including the modular structure of the present invention transmits the load of the building to the insulation by installing the insulation at the lower end of the foundation, but the strength to support it is not sufficient, so it is vulnerable to earthquakes, shaking, etc. In order to reinforce the disadvantages that can cause cracks and uneven settlement due to instability, a reinforcing bar with ultra-high-performance concrete inserted inside the insulation layer is provided to improve the strength and to withstand the load of the building, so it has a strong advantage in deformation and cracking of the building. .

In addition, the reinforcing bar supporting the foundation insulation material including the modular structure of the present invention protrudes above the insulator and has a strong bonding force with the concrete poured over the reinforcing bar, while the middle layer of the reinforcing bar is thin and separated from each other up and down to minimize heat bridge transmission. There are advantages that can be

In addition, in the base insulation material including the modular structure of the present invention, the external reinforcing bar is molded by itself without a side mold, so that the reinforcing bar can be manufactured only with the upper and lower molds. It works.

In addition, in the foundation insulation material including the modular structure of the present invention, even if there is an empty space under the reinforcing bar because the casted concrete layer at the bottom is not uniform, the reinforcing bar descends downward and cracks do not occur in the surrounding insulation material due to the weight of the reinforcing bar. There is no advantage.

1 is a cross-sectional view of a basic insulation material for a general mat foundation,
Figure 2 (a) is a plan view of a base insulation including a modular structure according to an embodiment of the present invention,
Figure 2 (b) is a cross-sectional view and a partially enlarged view of a base insulation including a modular structure according to an embodiment of the present invention,
Figure 3 (a) is a cross-sectional view of a state in which the upper mold and the lower mold are combined with the external structure of the reinforcing bar of the base insulation including the modular structure according to the embodiment of the present invention;
3 (b) is a cross-sectional view of a state in which the upper mold and the lower mold are separated from the outer structure of the reinforcing bar of the base insulation including the modular structure according to the embodiment of the present invention, and the inner structure is formed;
4 is a perspective view of a state in which a base insulation material including a modular structure according to an embodiment of the present invention is separated into an upper reinforcing bar and a lower reinforcing bar;
5 is a side cross-sectional view of a state in which the upper reinforcing bar and the lower reinforcing bar of the foundation insulation including the modular structure according to the embodiment of the present invention are combined;
6 is a side cross-sectional view of an upper reinforcing bar and a lower reinforcing bar of a foundation insulation including a modular structure according to an embodiment of the present invention inserted into the heat insulating layer;
7 is a perspective view of an upper reinforcing bar, a lower reinforcing bar, and a central reinforcing bar of a base insulation including a modular structure according to another embodiment of the present invention in a separated state;
8 is a side cross-sectional view of a state in which an upper reinforcing bar, a lower reinforcing bar, and a central reinforcing bar are combined of a base insulation including a modular structure according to another embodiment of the present invention;
9 is a side cross-sectional view of an upper reinforcing bar, a lower reinforcing bar, and a central reinforcing bar of a foundation insulation including a modular structure according to another embodiment of the present invention inserted into the heat insulating layer;
10 is a side cross-sectional view of a state in which an upper reinforcing bar and a lower reinforcing bar are combined in a heat insulating layer in a foundation insulation material including a modular structure according to an embodiment of the present invention and pressing the discarded concrete layer;
11 is a side cross-sectional view of a state in which a connection part connecting a pillar part and a roof part is formed in the upper reinforcement and the lower reinforcement of the foundation insulation including the modular structure according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described so that those of ordinary skill in the art can easily implement them with reference to the accompanying drawings.

The foundation insulation material including the modular structure of the present invention is a basic insulation material to be constructed under the mat foundation, which is a structure supported on the basis of the building floor as shown in FIGS. 2 to 11,

A heat insulation layer 100 made of a base insulation material in which a plurality of reinforcing rod insertion holes 101 are spaced apart from each other and formed;

It is inserted into the reinforcing bar insertion hole 101 of the heat insulation layer 100 formed with the same diameter up and down, and is made of a circular or polygonal shape, and includes a reinforcing bar 200 containing ultra-high-performance concrete (UHPC) therein,

The reinforcing bar 200 has a T-shaped structure insertion hole 211 on the inside of the side cross-section, and an external structure 210 that forms a side mold of the internal structure 220 that is poured into the structure insertion hole 211 and , a structure to which the internal structure 220 formed by pouring UHPC mortar into the structure insertion hole 211 is formed by being separated vertically.

The foundation insulation material including the modular structure of the present invention is a floor insulation material to be constructed under the mat foundation, and as shown in FIG. .

The insulation layer 100 is composed of a reinforced bar 200 through which a cylindrical ultra-high performance concrete (UHPC, ultra-high performance concrete) is inserted as an EPS insulation material, thereby compensating for the low strength disadvantages of the EPS insulation material having a heat-crossing effect. In addition, high-strength ultra-high-performance concrete compensates for the difficulty of thermal cross-blocking.

The heat insulating layer 100 is an EPS (EXPANDED POLYSTYRENE) heat insulating material formed in a rectangular block shape, and representative materials include Styrofoam, expanded polystyrene, polyurethane foam, and the like. In addition to this, various insulating materials may be used.

The reinforcing bar 200 is inserted into an external structure 210 made of a side mold and a structure insertion hole 211 having a side cross-section formed in a T-shape on the inside of the external structure 210 and cured with ultra-high performance concrete ( UHPC) is made of a combination of the internal structure 220 made of. The internal structure 220 made of UHPC preferably has a roof portion having a diameter of 60 mm and a pillar portion having a diameter of 40 mm, but is not limited thereto. However, since the diameter of the roof portion is large and does not give a spot impact to the structural material 20 on the upper part, and the supporting force for supporting the structure material 20 may be weakened when the diameter of the pillar portion is reduced to 30 mm or less, it is preferable to be larger than this. . When the diameter of the roof part is 70mm or more, there is a problem that heat transfer through the UHPC increases and the thermal bridge effect is lowered.

Concrete is poured on the upper portion of the heat insulating layer 100 to form a structural material 20 and is provided to be coupled to the reinforcing bar 200, and the reinforcing bar 200 is formed to protrude 10 to 20 mm from the upper surface of the heat insulating layer 100 and to the upper portion It is provided to increase the bonding strength with the concrete to be poured.

In this way, in order to protrude the reinforcing bar 200 by 10 to 20 mm from the upper surface of the heat insulating layer 100, as shown in FIG. 3, an upper mold made of an acrylic donut on the upper part of the external structure 210 made of EPS material. 230 is disposed, a lower mold 240 made of the same acrylic material as the upper mold 230 is disposed on the lower portion, and UHPC mortar is poured through the structure insertion hole 211 of the external structure 210, and then the upper When the reinforcing bar 200 is formed by removing the mold 230 and the lower mold 240 and inserted into the reinforcing bar insertion groove 101 of the heat insulating layer 100, the upper portion of the inner structure 220 is the outer structure 210, It is formed to protrude upward from the heat insulating layer 100 . The external structure 210 of the present invention serves as a side mold of the UHPC to be poured inside, and is manufactured at the factory and when the reinforcing bar is inserted into the heat insulating layer 100 at the construction point, the coupling with the heat insulating layer is completed, so the construction time is greatly reduced do. In addition, the external structure 210 is made of the same material as the insulating layer 100 surrounding the periphery, and is coupled to each other without a sense of difference between the external structure and the insulating layer, and has excellent bonding strength with the concrete poured from the top.

In the lower mold 240 for forming the internal structure 220, the reinforcing bar 200 includes a lower reinforcing bar 200a and an upper reinforcing bar 200b or a lower reinforcing bar 200a, an upper reinforcing bar 200b and a lower reinforcing bar ( When formed with the central reinforcement 200c disposed between 200a) and the upper reinforcement 200b, a protrusion 241 inserted into the inner structure 220 to form an insertion groove or projection for coupling with each other is formed or It may be formed of a structure forming a protrusion on the outside of the internal structure 220 .

As shown in FIGS. 4 and 5, the reinforcing bar 200 according to an embodiment of the present invention includes a lower reinforcing bar 200a provided at the lower portion and an upper reinforcing bar 200b provided on the lower reinforcing bar 200a. However, in the lower reinforcing bar 200a, a first protrusion 221a is formed on an upper portion of a first internal structure 220a formed inside the first external structure 210a, and the upper reinforcing bar 200b is a second A first insertion groove 221b into which the first protrusion 221a is inserted is formed in the lower part of the second internal structure 220b formed inside the external structure 210b, so that the lower reinforcing bar 200a and the upper reinforcing bar ( 200b) are in contact with each other and are coupled up and down.

The state in which the upper part of the internal structure 220 protrudes upward from the external structure 210 and the heat insulating layer 100 can be seen as shown in FIG. 6 (b) or 9 (b).

In addition, the external structure 210 can be easily cut with an EPS insulation material, so when constructing the external structure 210 that protrudes from the surrounding heat insulation layer 100 in the shape shown in FIG. 6 (a) or FIG. 9 (a). It can be cut and used. In this case, the concrete poured from the upper part of the reinforcing bar 200 is combined with a portion of the upper part and the side of the reinforcing bar. In addition, even when an empty space is generated in a part of the abandoned concrete layer 300 under the heat insulating layer 100 and the reinforcing bar 200 descends downward on the heat insulating layer, a part of the reinforcing bar 200 may continue to protrude, and the outside The step 212 formed on the upper portion of the structure 210 may be exposed on the insulating layer 100 as it is. If the steps are exposed in this way, concrete can be poured as it is. The poured concrete is poured on the upper part of the reinforcing bar and the step 212 of the external structure 210 to combine the reinforcing bar with the heat insulating layer.

The external structure 210 shown in FIG. 6 (a) or FIG. 9 (a) becomes a side mold of the UHPC, which is an internal structure, without the upper mold 230 in FIG. 3 , so that the internal structure and the external structure This integration makes it easier to manufacture the reinforcing bar 200 .

The heat insulating layer 100 is made of an EPS heat insulating material, and the reinforcing bars 200 are spaced apart from each other to penetrate the heat insulating layer 100 and are engaged as if male and female are coupled.

And, as shown in FIGS. 4 to 6, the reinforcing bar 200 includes a lower reinforcing bar 200a provided in the lower portion and an upper reinforcing bar 200b provided in the upper portion of the lower reinforcing bar 200a, as shown in FIGS. The reinforcing bar 200a is formed with a first protrusion 221a, and the upper reinforcing bar 200b has a first insertion groove 221b into which the first protrusion 221a is inserted. The reinforcing bar 200b is also engaged with each other as if male and female are coupled to each other.

In addition, the reinforcing bar 200 includes a lower reinforcing bar 200a provided in the lower portion, an upper reinforcing bar 200b provided in the upper portion, and the lower portion as shown in FIGS. 7 to 9 according to another embodiment of the present invention. It may be composed of a central reinforcing bar 200c disposed between the reinforcing bar 200a and the upper reinforcing bar 200b.

At this time, the central reinforcing bar 200c has a cylindrical BL material third internal structure 220c penetrating the center of the third external structure 210c is formed, and the third internal structure 220c has a third protrusion on the upper part. A second protrusion 222c is formed at a 221c and a lower portion, and the third protrusion ( 221c) and a third insertion groove 222b and a second insertion groove 222a into which the second protrusion 222c is respectively inserted are formed. Accordingly, a spaced distance exists between the outer diameters of the second and third projections and the second insertion groove and the third insertion groove.

The central reinforcing bar 200c is inserted into the third external structure 210c by manufacturing a BL material center reinforcing bar in advance. BL (Bakelite) is a plastic product, a type of thermosetting resin, and has superior thermal cross-blocking function and strength compared to UHPC. In addition to BL material, the central reinforcement can be replaced with other plastic materials such as polycarbonate, PMMA, and PVC that have structural strength and thermal insulation properties.

In this embodiment, the central reinforcement 200c was further formed between the lower reinforcement 200a and the upper reinforcement 200b to simplify manufacturing by integrating the side mold and UHPC, and to increase the heat-crossing effect and maintain strength. These central reinforcing bars are located at the upper and lower portions separated from the upper and lower reinforcing bars, and each of these reinforcing bars abuts in a separated state and is placed up and down, so that the heat-crossing effect is increased. Furthermore, since the material of the central reinforcing bar and the material of the internal structure providing the support force of the upper and lower reinforcing bars are different, heat transfer is lowered. On the other hand, the internal structure 220, which provides a strong support force but has lower thermal insulation performance than the thermal insulation layer 100, has a wide-diameter roof portion formed at the upper and lower portions to further strengthen the bearing capacity, and narrow the column portion to increase the effect of thermal cross-blocking. , by placing the outer structure 210 of the same material as the heat insulating layer 100 around the inner structure 220 to improve the insulation performance, while improving the balance of each reinforcing bar separated from each other. Therefore, the top and bottom of the external structure for each floor are formed to be flat.

On the other hand, the first internal structure (220a) and the second internal structure (220b) is formed in a T-shape, the vertical part of the column part 223 and the horizontal part of the connecting part (225) connecting the roof part (224) It may be further provided, and thus, as shown in FIG. 11 , the first connecting the first roof portion 224a of the first internal structure 220a of the lower reinforcement 200a and the first pillar portion 223a A connection portion 225a is formed, and a second connection portion 225b connecting the second roof portion 224b and the second pillar portion 223b of the second internal structure 220b of the upper reinforcement 200b is formed. can

The internal structure 220 as described above forms a first connection part 225a and a second connection part 225b on the lower part and the upper part, respectively, on the inner side of the external structure 210 to form a lower reinforcement rod 200a connected to the central reinforcement rod 200c. ) and by strengthening the supporting force of the upper reinforcing bar 200b, it is possible to withstand without deformation even when the upper pressing force is strong.

On the other hand, the lower portion of the heat insulating layer 100 and the reinforcing bar 200 is further provided with a cast-off concrete layer 300, and the cast-off concrete layer 300 has a structure installed to flatten the ground surface, and the reinforcing bar 200 and the heat insulating layer 100 is supported.

The reinforcing bar 200 is, as shown in FIG. 10, when the lower reinforcing bar 200a and the upper reinforcing bar 200b are sequentially inserted into the reinforcing bar insertion groove 101, the lower reinforcing bar 200a is directly connected to the discarded concrete layer 300. come into contact At this time, if the concrete discarded layer 300 is not flat for other reasons, the lower reinforcement 200a descends into the empty space of the discarded concrete 300, and the upper reinforcement 200b is lowered by its own weight. If the height of the empty space of the cast-off concrete layer 300 is high, the upper end of the upper reinforcing bar 200b slightly protrudes above the heat-insulating layer 100, and if the empty space height of the cast-off concrete layer 300 is low, the upper end of the upper reinforcing bar 200b It greatly protrudes above the heat insulating layer 100 . This non-planarization of the concrete discarded layer 300 does not occur much, but even when it occurs, it is possible to sufficiently accommodate and maintain the bearing capacity.

In the heat insulation layer 100 , the reinforcing bar insertion grooves 101 are formed vertically at regular intervals, and the reinforcing bars 200 are inserted into the reinforcing bar insertion grooves 101 . At this time, the reinforcing bar 200 is tightly fitted into the reinforcing bar insertion groove 101 so that there is no lateral movement.

On the other hand, when the lower reinforcing bar 200a and the upper reinforcing bar 200b are coupled or the lower reinforcing bar 200a, the upper reinforcing bar 200b, and the central reinforcing bar 200c are coupled, they are not forcedly fixed to each other, but between the projection and the insertion groove. It is provided to form a free space in the space to absorb vibration by the play.

The diameter of the first insertion groove 221b of the second internal structure 220b of the upper reinforcement 200b than the first protrusion 221a protruding from the upper portion of the first internal structure 220a of the lower reinforcement 200a is formed larger, and the second insertion groove of the first internal structure 220a and the second internal structure 220b than the second protrusion 222c and the third protrusion 221c of the third internal structure 220c. (222a) and the third insertion groove (222b) is formed to have a larger diameter. This is the same as the first protrusion (221a) and the first insertion groove (221b).

In this way, the space formed between the projection and the insertion groove can absorb horizontal vibrations, and also interfere with heat transfer, thereby enhancing the heat-crossing effect.

In the present invention, the internal structure 220 of the reinforcing bar 200 is made by mixing cement, silica fume, fine aggregate, filler and high-performance water reducing agent at a low water-cement ratio with ultra-high performance concrete, UHPC (Ultra-High Performance concrete), and is generally compressed The strength ranges from 100 to 200 MPa, the tensile strength to 8 to 20 MPa, and the modulus of elasticity ranges from 40 to 50 GPa.

The reinforcing bar 200 is built into the heat insulating layer 100 to serve as a framework for the heat insulating layer 100 to increase the bearing capacity of the heat insulating layer 100 .

In addition, since the internal structure 220 is formed to protrude at a predetermined height above the external structure 210 , it is possible to increase the bonding force with the upper base concrete, that is, the structural material 20 . That is, the internal structure 220 is not coupled to the structural member 20 face-to-face, but is coupled in a male and female form to increase the coupling force.

In the present invention, the internal structure 220 made of ultra-high-performance concrete is combined with the external structure 210 made of a side mold made of EPS material and integrated, so that cracks in the heat insulation layer 100 do not occur.

On the other hand, the applicant modeled a part of the floor insulation as 100*100*130 (width*length*height), and based on the case composed only of EPS, the total amount of heat transfer according to the UHPC and the combination of UHPC and central reinforcement (invention) The difference was compared, and at this time, the temperature difference between indoor and outdoor for total calorific value analysis was set to 20℃.

The table below compares the transfer heat quantity and equivalent thermal transmittance rate of the EPS insulation transmittance W/(m².K) thermal material and the developed product.

EPS only UHPC UHPC + PVC (10T in the middle) UHPC + PVC (center 110T) modelling

result

calorie W 0.046 0.130 0.114 0.067 Thermal transmittance W/(m².K) 0.230 0.651 0.569 0.336 Total heat increase/decrease (%) standard 282 248 146

UHPC + PVC thickness calorie W Linear thermal bridge W/K Thermal transmittance W/(m².K) Thermal conductivity W/(m.K) Total heat increase/decrease %
(based on EPS: 0.046) 10 0.114 0.003 0.569 0.074 248 20 0.104 0.003 0.518 0.067 226 (↓22) 30 0.096 0.003 0.481 0.063 209 (↓17) 40 0.090 0.002 0.451 0.059 196 (↓13) 50 0.085 0.002 0.426 0.055 185 (↓11) 60 0.081 0.002 0.404 0.053 176 (↓9) 70 0.077 0.002 0.386 0.050 167 (↓9) 80 0.074 0.001 0.370 0.048 160 (↓7) 90 0.071 0.001 0.357 0.046 154 (↓6) 100 0.069 0.001 0.345 0.045 150 (↓4) 110 0.067 0.001 0.336 0.044 146 (↓4)

As shown in the above experiment, it can be seen that the insulation effect is higher with PVC in the center than with UHPC alone, and the larger the PVC thickness, the higher the insulation effect.

Below is a table comparing the transfer heat amount and equivalent thermal transmittance of the EPS insulation material and the floor insulation material of the present invention. This experiment was made with the internal structure in a square shape, and the column part was 25.50*26.50mm and the roof part was 53.0*53.0mm.

division EPS insulation Full UHPC UHPC + PVC 20 UHPC + PVC 30 calorie W 7.454 8.292 8.028 7.954 linear thermal transmittance
W/K 0.000 0.042 0.029 0.025 Equivalent thermal transmittance W/(m².K) 0.230 0.256 0.248 0.245 equivalence
thermal conductivity
W/(m.K) 0.030 0.033 0.032 0.032

As shown in the above experiment, it can be seen that the form in which UHPC and plastic material are inserted has better heat blocking rate than the reinforcing bar made of only UHPC.

Also, below is a comparison of electrothermal analysis according to the shape of the plastic material inserted into the UHPC reinforcing bar. UHPC: 1.0 W/m.K, and the central reinforcing bar inserted in the center is BL (Bakelite): 0.2 W/m.K.

division No upper and lower insertion parts With upper and lower insertion parts

calorie W 0.096 0.093 linear thermal transmittance
W/K 0.002 0.002 Equivalent thermal transmittance W/(m².K) 0.479 0.465 Equivalent thermal conductivity W/(m.K) 0.062 0.060

Below is a comparison of the transfer heat capacity and equivalent thermal transmittance of products applied with UHPC (0.8 W/m·K) and Bakelite:BL (Φ 30, 0.2 W/m·K).

division EPS insulation Full UHPC UHPC + BL Height 20 UHPC + BL Height 30 calorie W 7.454 8.148 7.933 7.881 linear thermal transmittance
W/K 0.000 0.035 0.024 0.021 Equivalent thermal transmittance W/(m².K) 0.230 0.251 0.245 0.243 equivalence
thermal conductivity
W/(m.K) 0.030 0.033 0.032 0.032

Below is a comparison of the transfer heat capacity and equivalent thermal transmittance of products applied with UHPC (0.8 W/m·K) and PVC (Φ 40, 0.14 W/m·K).

division EPS insulation Full UHPC
(based on Φ 30) UHPC + PVC Height 20 UHPC + PVC Height 30 calorie W 7.454 8.148 8.149 8.053 linear thermal transmittance
W/K 0.000 0.035 0.035 0.030 Equivalent thermal transmittance W/(m².K) 0.230 0.251 0.252 0.249 equivalence
thermal conductivity
W/(m.K) 0.030 0.033 0.033 0.032

Below is a comparison of the amount of heat transfer and equivalent thermal transmittance according to the change in the thermal conductivity (compare 1.0 and 0.8) of UHPC.

division Φ30 BL: Φ30, 0.2W/m.K, shape including upper and lower insertion parts UHPC ONLY UHPC + BL Height 20 UHPC + BL Height 30 1.0 W/m.K 0.8 W/m.K 1.0 W/m.K 0.8 W/m.K 1.0 W/m.K 0.8 W/m.K calorie W 8.292 8.148 7.993 7.933 7.926 7.881 linear thermal transmittance
W/K 0.042 0.035 0.027 0.024 0.024 0.021 Equivalent thermal transmittance W/(m².K) 0.256 0.251 0.247 0.245 0.245 0.243 equivalence
thermal conductivity
W/(m.K) 0.033 0.033 0.032 0.032 0.032 0.032

division Φ30 PVC: Φ40, 0.14W/m.K, shape including upper and lower insertion parts UHPC ONLY UHPC + PVC Height 20 UHPC + PVC Height 30 1.0 W/m.K 0.8 W/m.K 1.0 W/m.K 0.8 W/m.K 1.0 W/m.K 0.8 W/m.K calorie W 7.454 8.148 8.224 8.149 8.106 8.053 linear thermal transmittance
W/K 0.000 0.035 0.038 0.035 0.033 0.030 Equivalent thermal transmittance W/(m².K) 0.230 0.251 0.254 0.252 0.250 0.249 equivalence
thermal conductivity
W/(m.K) 0.030 0.033 0.033 0.033 0.033 0.032

Therefore, the foundation insulation material including the modular structure of the present invention is spaced apart from the floor insulation material installed at the lower end of the mat foundation, which is a structure supporting the entire building floor as a base, and is formed through the reinforcing rod insertion groove 101, EPS material A cylindrical reinforcing bar 200 in which the inner structure 220 is formed by pouring ultra-high-performance concrete (UHPC) into the structure insertion hole 211 formed inside the outer structure 210 made of is formed by combining the upper reinforcing bar 200b and the lower reinforcing bar 200a or the upper reinforcing bar 200b, the lower reinforcing bar 200a and the central reinforcing bar 200c with each other, thereby improving the insulation performance and strength, and supporting the load of the building Thus, not only can the differential settlement be reduced, but there is also the effect of simplifying the process because demolding and mold management are small.

In addition, the foundation insulation material including the modular structure of the present invention is vulnerable to earthquakes, shaking, etc. because the strength of the building material is transmitted to the insulation material by installing the insulation material at the lower end of the foundation in the case of a mat foundation, but the strength to support it is not sufficient. In order to reinforce the disadvantages that may cause cracks and uneven settlement due to anxiety, a reinforcement bar 200 with ultra-high performance concrete inserted inside the insulation layer 100 is provided to improve the flexural strength to withstand the load of the building. It has strong crack resistance.

In addition, in the foundation insulation material including the modular structure of the present invention, the reinforcing rod supporting the insulation protrudes above the insulation and has a strong bonding force with the concrete poured over the reinforcement, while the middle layer of the reinforcing rod is thin and separated from each other up and down to minimize heat bridge transmission There are advantages to doing.

In addition, in the base insulation material including the modular structure of the present invention, the external reinforcing bar is molded by itself without a side mold, so that the reinforcing bar can be manufactured only with the upper and lower molds. It works.

In addition, in the foundation insulation material including the modular structure of the present invention, even if there is an empty space under the reinforcing bar because the casted concrete layer at the bottom is not uniform, the reinforcing bar descends downward and cracks do not occur in the surrounding insulation material due to the weight of the reinforcing bar. There is no advantage.

1: ground 2: ground
3: Indoor space 4: Underground freezing line
10: insulation material 20: structural material
100: insulation layer 101: reinforcing bar insertion hole
200: reinforcing bar 200a: lower reinforcing bar
200b: upper reinforcing bar 200c: central reinforcing bar
210: external structure 210a: first external structure
210b: second external structure 210c: third external structure
211: structure insertion hole 212: step
220: internal structure 220a: first internal structure
220b: second internal structure 220c: third internal structure
221a: first projection 221b: first insertion groove
221c: 3rd projection
222a: second insertion groove 222b: third insertion groove
222c: second projection
223a: first pillar 223b: second pillar
224a: first roof portion 224b: second roof portion
225a: first connection part 225b: second connection part
230: upper mold 240: lower mold
241: protrusion
300: abandoned concrete layer

Claims (7)

In the foundation insulation material installed at the bottom of the mat foundation, which is a structure supporting the entire building floor as a foundation,
a heat insulating layer 100 made of a base heat insulating material in which a plurality of reinforcing bar insertion holes 101 are spaced apart from each other;
The reinforcing bar 200 is inserted into the reinforcing bar insertion hole 101 of the heat insulation layer 100, and includes ultra-high-performance concrete (UHPC) therein;
The reinforcing bar 200 has a T-shaped structure insertion hole 211 on the inside of the side cross-section, and an external structure 210 that forms a side mold of the internal structure 220 that is poured into the structure insertion hole 211 and , The structure insertion hole 211 is formed by pouring UHPC mortar, the structure to which the internal structure 220 is coupled is formed vertically separated;

The reinforcing bar 200 includes a lower reinforcing bar 200a provided at a lower portion and an upper reinforcing bar 200b provided at an upper portion of the lower reinforcing bar 200a; The lower reinforcing bar 200a has a first internal structure 220a formed inside the first external structure 210a, and the upper reinforcing bar 200b is a second inner structure formed inside the second external structure 210b. Includes a structure (220b),
the first external structure 210a and the second external structure 210b have the same material as the heat insulating layer 100;

The reinforcing bar 200 includes a lower reinforcing bar 200a provided in the lower portion, an upper reinforcing bar 200b provided in the upper portion, and a central reinforcing bar 200c disposed between the lower reinforcing bar 200a and the upper reinforcing bar 200b. including more,
The central reinforcing bar 200c is composed of a third internal structure 220c providing support and a third external structure 210c surrounding the outer surface of the third internal structure 220c, and the third internal structure 220c. The first internal structure (220a) and the second internal structure (210b) and a different material and a modular structure containing a basic insulation material.
delete delete delete According to claim 1,
A castaway concrete layer 300 is further provided under the heat insulation layer 100 and the reinforcing bar 200, and the reinforcing bar 200 descends when the castaway concrete layer 300 under the reinforcing bar 200 is non-planarized. A foundation insulation material including a modular structure in contact with the abandoned concrete layer (300).
According to claim 1,
The central reinforcing bar 200c is formed with a third internal structure 220c made of a plastic material penetrating the center of the third external structure 210c,
The third internal structure 220c has a third protrusion 221c at an upper portion and a second protrusion 222c at a lower portion thereof, and the second internal structure 220b and the lower reinforcing bar 200a of the upper reinforcing bar 200b. of the first internal structure 220a includes a modular structure in which a third insertion groove 222b and a second insertion groove 222a into which the third projection 221c and the second projection 222c are respectively inserted are formed foundation insulation material.
7. The method of claim 6,
The outer diameter of the second protrusion 222c and the third protrusion 221c of the third internal structure 220c and the second insertion groove 222a of the first internal structure 220a and the second internal structure 220b, and A base insulation material including a modular structure provided with a spaced interval between the inner diameter of the third insertion groove (222b).

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