CN206903039U - A kind of bridge cutoff type self heat-preserving concrete building block - Google Patents

Abstract

The utility model relates to a bridge-breaking self-insulating concrete block for building energy saving, which belongs to the technical field of building materials. It is composed of broken bridge concrete hollow blocks (1) with trapezoidal protrusions and trapezoidal grooves, and thermal insulation material (2). The thermal insulation material (2) is located in the two cavities surrounded by concrete hollow blocks (1) middle. The concrete hollow block (1) is made of materials such as cement and fine stone, and the concrete hollow block (1) has two broken bridge connecting blocks (3) to connect the concrete. The bridge-broken connecting block (3) is made up of multiple glass fiber reinforcing bars (31) and polyurethane (32), and is made in the bridge-broken connecting block mould. The glass fiber reinforced ribs (31) in the bridge-breaking connecting block (3) do not pass through the block insulation material (2). The utility model is suitable for masonry load-bearing and non-load-bearing walls, and has the advantages of convenient manufacture, good mechanical performance and thermal insulation performance, and low cost.

Description

A broken bridge type self-insulating concrete block

technical field

The utility model relates to a broken bridge type self-insulating concrete block for building energy saving, which belongs to the technical field of building materials.

Background technique

The construction industry is a field of rapid growth in energy demand. At present, my country's building energy consumption accounts for about one-third of the country's total energy consumption. There is a huge potential for building energy conservation. The construction industry has become a key industry for the country to implement energy conservation and emission reduction policies. At present, the external wall insulation technology that is mostly used in building energy conservation in my country has many problems such as cracking, hollowing, fire, and poor durability of the external wall insulation material. The external wall self-insulation technology is an integrated technology of energy saving and structure, with low cost and low maintenance cost, and solves the problem of the same life span of heat preservation and buildings. The self-insulation blocks used in the external wall self-insulation technology achieve the purpose of energy saving by setting the insulation layer inside the blocks. However, the internal concrete ribs of most self-insulating blocks form thermal bridges, which affects the further improvement of the thermal insulation performance of the blocks, and cannot meet the requirement of 75% energy saving in cold regions.

Chinese patent 201420248236.2 discloses a broken bridge type composite self-insulating block, and the insulating block is arranged between the left half block and the right half block. Dovetail grooves are arranged on the inner sides of the left half block and the right half block, and dovetails matching the dovetail grooves are respectively arranged on both sides of the insulation block. The dovetail is compositely and fixedly connected with the dovetail grooves of the left half block and the right half block. The self-insulating block has the following problems: the left half block and the right half block must be connected with the insulation layer through a slot such as a dovetail groove, which causes complicated procedures when processing the block and the insulation layer, and improves the performance of the self-insulation block. Cost of production. The connection between the dovetail of the insulation material and the dovetail groove of the concrete is realized. This connection method has weak connection force, which leads to poor integrity of the block and poor overall mechanical properties. Chinese patent 201510568635.6 discloses a self-insulating block and its preparation method. The self-insulating block uses a Y-shaped connecting pin to connect two layers of concrete and the insulating material sandwiched between the concrete. Such a structure makes the connecting pin very long, and if the steel material is used, it will become a path for heat transfer, which will affect the thermal insulation effect. If ordinary plastic pins are used, the connection force will be weak, and the overall strength of the block will be very weak. Moreover, the connecting pin must pass through the insulation layer, which will inevitably cause damage to the insulation layer during block processing and affect the insulation effect of the insulation layer.

Contents of the invention

The purpose of the utility model is to provide a broken bridge type self-insulating concrete block with good mechanical and thermal insulation properties and good integrity, which can meet the requirement of energy saving of 75% in cold regions.

In order to achieve the above object, the technical solution adopted by the utility model is:

The broken bridge self-insulating concrete block is composed of broken bridge concrete hollow blocks and thermal insulation materials. The bridge-broken concrete hollow block has two bridge-broken connecting blocks. The upper left corner and the lower right corner of the hollow bridge-broken concrete block are respectively provided with trapezoidal protrusions, and the lower left corner and upper right corner are respectively provided with trapezoidal grooves.

The broken bridge connection block is located at both ends of the broken bridge concrete hollow block, and the concrete is connected by a plurality of glass fiber reinforced bars, and the cavity formed by it is filled with polyurethane, and the glass fiber reinforced bars are at both ends Bend parallel to the same direction.

A manufacturing process of the broken bridge type self-insulating concrete block as described above, it is characterized in that it comprises the following steps:

Step 1: Bind multiple glass fiber reinforcements with plastic straps and put them into the mold of the broken bridge connection block;

Step 2: Fill the mold with polyurethane, take it out of the mold after molding, and make a broken bridge connection block with a certain length of bent glass fiber reinforcing ribs exposed at both ends;

Step 3: Put the broken bridge connection block into the corresponding connection position at both ends of the concrete hollow block mold, put the dry hard concrete into the mold, and vibrate through the vibration forming machine to make the broken bridge concrete hollow block;

Step 4: Fill polystyrene boards or other thermal insulation materials into the hollow of broken bridge concrete hollow blocks, and then make broken bridge self-insulating concrete blocks.

Compared with the prior art, the beneficial effects of the utility model are:

1. There are two layers of insulation layers and three layers of concrete layers along the thickness direction of heat transfer in this block. The block-shaped design of the block makes the overall thermal insulation performance and mechanical properties of the block very good, which meets its load-bearing requirements.

2. The upper left corner and lower right corner of the block are respectively provided with trapezoidal protrusions, and the lower left corner and upper right corner are respectively provided with trapezoidal grooves. This design increases the horizontal distance between the two blocks when the wall is built. The connection force makes the overall stability of the masonry wall better. At the same time, the length of the mortar joints during masonry is increased, and the thermal bridge formed by the mortar joints when the wall is built with the blocks is weakened.

3. Both ends of the block are equipped with broken bridge connecting blocks, which can better block the transfer of heat in the concrete and have a better thermal insulation effect. The broken bridge connecting blocks are arranged at both ends of the block, which has little influence on the overall compressive strength and bending strength of the block.

4. The broken bridge connection block of this block adopts glass fiber reinforced ribs, and polyurethane is filled in the middle. The tensile strength of glass fiber reinforced bars is higher than that of rebar of the same diameter, and the expansion coefficient is closer to that of concrete, and the thermal conductivity is also small. Such a bridge-breaking connection block can well isolate the thermal bridge, connect the concrete into one body, and have high tensile strength at the joint.

5. The broken bridge connection block of this block is used for the direct connection of two pieces of concrete. The glass fiber reinforcement used for the connection does not pass through the insulation layer and will not cause damage to the insulation layer.

To sum up, the utility model has reasonable design, simple structure, good mechanical properties and thermal insulation performance, which can not only ensure the quality of the building, but also solve the problem of the same service life of the thermal insulation and the building, and can achieve the requirement of 75% energy saving.

Description of drawings

Figure 1 is a structural schematic diagram of a broken bridge self-insulating concrete block.

Fig. 2 is a structural schematic diagram of a bridge-broken concrete hollow block.

Fig. 3 is a structural schematic diagram of a broken bridge connection block.

Fig. 4 is A-A sectional view.

Fig. 5 is a schematic diagram of the broken bridge type self-insulating concrete block structure at the end.

Fig. 6 is a schematic diagram of the bridge-broken concrete hollow block structure at the end.

Fig. 7 is a schematic diagram of blocks used for masonry wall connection.

In the figure, 1 is a bridge-broken concrete hollow block, 2 is polystyrene filled or other thermal insulation materials, 3 is a bridge-broken connection block, 31 is a glass fiber reinforcing bar, and 32 is polyurethane.

detailed description

Below in conjunction with accompanying drawing 1～7, the utility model is described in further detail.

As shown in Figure 1, the bridge-broken self-insulating concrete block provided by the utility model is composed of a bridge-broken concrete hollow block 1 and a polystyrene insulation material 2. The polystyrene insulation material 2 is located in the two cavities formed by the hollow blocks 1 . The upper left corner and lower right corner of the block are respectively provided with trapezoidal protrusions, and the lower left corner and upper right corner are respectively provided with trapezoidal grooves.

As shown in FIG. 2 , the bridge-broken concrete hollow block 1 is composed of fine stone concrete and bridge-broken connecting blocks 3 . There are two broken bridge connecting blocks 3, respectively connecting the two ends of the broken concrete, located on the concrete path at the left and right ends of the broken bridge concrete hollow block 1, forming a partition of two thermal bridges. Fine stone concrete is made of cement, fine stone, water and other materials according to the mix ratio determined by previous experiments, and is molded in a mold. The upper left corner and lower right corner of the hollow block 1 are respectively provided with trapezoidal protrusions, and the lower left corner and upper right corner are respectively provided with trapezoidal grooves.

As shown in FIG. 3 , the broken bridge connection block 3 is composed of a plurality of glass fiber reinforced ribs 31 and polyurethane 32 . The glass fiber reinforced bar 31 is threaded, and both ends are bent parallel to the same direction. Compared with the rebar with the same diameter, it has higher tensile strength, lighter weight, and a small thermal conductivity, which can play a good role in contact with concrete. The connection works and hardly conducts heat. A plurality of glass fiber reinforcing ribs 31 are put into the mold of the broken bridge connection block, and then polyurethane is injected into it, and after the polyurethane is cured, the broken bridge connection block 3 is made. The two ends of the glass fiber reinforcing bar 31 are exposed to a certain length outside the polyurethane, which is convenient to be connected with fine stone concrete.

As shown in Fig. 4, it is the A-A sectional view of the broken bridge connection block 3, and there are three layers of glass fiber reinforcing ribs 31 in the height direction of the entire block, with two in each layer.

As shown in Figure 5, the bridge-broken self-insulating concrete block structure at the end is basically the same as that in Figure 1, the difference is that the bridge-broken self-insulating concrete block at the end only has a trapezoidal groove in the upper right corner and a trapezoidal protrusion in the lower right corner .

As shown in Figure 6, the bridge-broken concrete hollow block structure at the end is basically the same as that in Figure 2, the difference is that the bridge-broken concrete hollow block at the end only has a trapezoidal groove in the upper right corner and a trapezoidal protrusion in the lower right corner.

As shown in Figure 7, this is a schematic diagram of the connection between two end bridge-broken concrete self-insulating blocks and ordinary bridge-broken concrete self-insulating blocks. During masonry, the trapezoidal protrusions are connected with the trapezoidal grooves, which increases the connection force of the wall and the integrity of the wall.

The manufacturing steps of the utility model broken bridge type self-insulating concrete block are as follows:

Step 1: Put a plurality of glass fiber reinforcing ribs 31 bent at both ends into the mold of the broken bridge connection block, 2 in each layer, a total of three layers, the position of the reinforcing ribs of each layer should be considered to be fixed in the mold;

Step 2: Inject polyurethane into the mold of the broken bridge connection block, and after the polyurethane is cured, the broken bridge connection block 3 is made. The two ends of the glass fiber reinforcing bar 31 are exposed to a certain length outside the polyurethane, which is convenient to be connected with fine stone concrete.

Step 3: Put the broken bridge connecting block 3 into the corresponding position of the broken bridge concrete hollow block 1 mold, put the dry hard fine stone concrete into the block mold, and form the concrete hollow block by vibration extrusion;

Step 4: After the concrete hollow block is demolished and maintained, polystyrene boards or other insulation materials are filled into the two cavities of the hollow concrete block to become a broken bridge self-insulating concrete block. The block design considers the requirements of the load-bearing capacity of the block, and the overall force is uniform and the load-bearing capacity is good.

The broken bridge type self-insulating concrete block provided by this implementation has the following characteristics: the whole block is provided with two broken bridge connecting blocks, which better blocks the heat transfer and improves the overall thermal insulation performance of the block. The upper left corner and the lower right corner of the self-insulating block are respectively provided with trapezoidal protrusions, and the lower left corner and the upper right corner are respectively provided with trapezoidal grooves, which increase the connection force between the blocks when building the wall. The broken bridge connecting block uses multiple glass fiber reinforced ribs, which have high tensile strength and almost no heat conduction. The gaps between the multiple glass fiber reinforced ribs are filled with polyurethane to ensure the blocking effect of the broken bridge connecting block on heat transfer. The glass fiber reinforced ribs in the connecting blocks of the broken bridge are used for the connection of concrete, and do not pass through the insulation layer of the blocks, so that the insulation layer will not be damaged during production and use. The design of this block makes the overall mechanical properties of the block good, meets the load-bearing requirements, and has good thermal insulation performance. Directly using the block to build the outer wall can meet the requirements of 75% energy saving in cold regions, so that the construction speed is faster and the construction speed is reduced. cost and labor intensity.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model.

Claims (3)

1. Broken bridge self-insulating concrete block, which is composed of broken bridge concrete hollow block (1) and thermal insulation material (2), characterized in that the thermal insulation material (2) is located in the broken bridge concrete hollow In the two cavities surrounded by blocks (1), the broken bridge concrete hollow block (1) has two broken bridge connecting blocks (3), the upper left corner of the broken bridge concrete hollow block (1) Trapezoidal protrusions are respectively provided at the lower right corner and the lower right corner, and trapezoidal grooves are respectively provided at the lower left corner and the upper right corner. 2. The bridge-broken self-insulating concrete block according to claim 1, characterized in that, the bridge-broken connecting block (3) is made up of glass fiber reinforcement (31) and polyurethane (32), and the bridge-broken connecting block (3) ) in the glass fiber reinforcement (31) two ends exposed outside the polyurethane (32) has a certain length, the fine stone concrete is connected, the thickness of the polyurethane (32) will be less than the thickness of the thermal insulation material (2). 3. The broken bridge type self-insulating concrete block according to claim 1, characterized in that, both ends of the glass fiber reinforcement (31) are bent in parallel in the same direction, and in the height direction of the entire block, the glass fiber reinforcement (31) There are three layers, two of each layer.