NL1037715C2 - CASE LOST CONCRETE FORMING SYSTEM. - Google Patents

Description

Casing Lost Concrete Formwork System '

Prefab concrete casing load system that serves as a prefabricated building element and lost formwork: 5 The DAV-02 system must be seen as a lightweight concrete building element casing that also serves as lost formwork and makes traditional load systems that are subsequently removed unnecessary.

The ready-made prefab concrete formwork system is a unique invention for the home and commercial building that can be used in place of the current formwork system, hereinafter referred to as DAV-02. Fields of application are inner and outer walls, columns, foundation strips, retaining walls and or other concrete structures, both for residential construction, utility construction and civil engineering works.

The principle is based on a system in which a casing of concrete, or a replaceable material for concrete such as gas concrete, is produced from the original component.

This casing comprises an iron mesh construction in the core as a reinforcement to ensure rigidity and stability. The product is custom-made in the factory and, if desired, provided with the necessary reinforcement and piping on site.

Different variants are possible in which the pipework and / or reinforcement is installed on the construction site.

The concrete casing must therefore be manufactured in parts so that after the pipework and reinforcement has been fitted, it can be closed on the construction site, comparable to the existing traditional formwork method.

25 The product is significantly lighter than prefab concrete elements, more post-processing can be carried out at the construction site compared to prefab building elements, and there is no question of dismantling as this is a lost formwork system in the light of the traditional formwork systems.

There are a lot of advantages that the DAV-02 brings with respect to the current formwork system, which ultimately results in a higher return, in terms of speed, costs, transport and logistics.

The degree of efficiency must of course be further mapped in comparison with traditional formwork systems and prefab building elements.

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Comparison of traditional formwork system with DAV -02 both advantages and disadvantages. The preparation of the current formwork system is preceded by a lot of preparation work:

For example: Workspace must be made available on which the formwork system 5 can be placed. Each part of the current formwork system is assembled together during installation and when the job is done, i.e. if the concrete has been hardened after pouring (which is approximately), the frame must be dismantled for the next installation.

10 The need for a crane:

For example: loading, unloading, moving, setting up setup, deleting, storing and for many other applications. The use of a hoisting frame is indispensable for every movement of the current formwork system. Workers' help is also needed for the control and placement of the formwork system at the desired location. Precision work and accuracy are required when setting.

Transport in comparison with prefab and traditional formwork systems:

When transporting the current formwork system, many things have to be taken into account. First of all, special transport is required for the transport of the current formwork system. Due to the heavy weight and the large size of prefab elements, the damage caused by accidents is also many times greater than normal. The transport situation of the DAV-02 system is comparable to that of the traditional tax systems.

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Namely light and stackable:

However, the traditional formwork system is not yet a building element, but a means to create a building element. The DAV-02 system, on the other hand, is already a building element while it is many times lighter than a prefab building element. More is also possible after work on the construction site than with a prefab element.

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Labor intensive and heavy:

The work on the current formwork system is physically demanding and also dangerous for the workers who work on it. On average someone works in construction between 20 and 40 years. The work consistently consists of repetitions of actions including the preparation, adjustment and removal of the scaffolding and the work that precedes it and that is related to this. The advantage of the DAV-02 is that the repetition of all this work is made superfluous.

In addition, the carpenter is relieved of the physically demanding work, so that they are physically less burdened, which may mean that the working time of this carpenter can be extended.

Viewed from this perspective, it can also be said that (chronic) absenteeism can be reduced.

15 Regarding the hazard:

Since the DAV-02 consists of elements of a combination of light metal, this facilitates the above-mentioned operations and activities, such as adjusting, adjusting and removing the racks.

20 Logistics:

Traditional formwork system takes up a lot of space during storage on site or storage. On the construction project, a special space must be created for the current formwork system because it is very large and heavy. A crane is essential for every movement. Even with on-time delivery, strict dismantling is required for dismantling. Since the DAV-02 system does not have a dismantling operation, one does not have to worry about the aftercare and the time reserved for this can be used effectively.

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Safety with DAY-02:

Since the DAV-02 is simple and flexible to use, it is also a safer system compared to the current tax system. This because the DAV-02 can be produced in smaller sizes and is lighter in weight, it reduces the risk of damage during transport on the road, for the environment and at the construction site. The current tax system represents a much greater risk for safety and also entails more risk of damage.

10 Error margin in connection work:

When adjusting the traditional formwork, error margins in walls and other components are often discovered after they have been stripped of the formwork.

These are costly interventions that are often difficult to correct.

Just think of a wall of twenty meters long that shows a deviation of 15 a few centimeters between the beginning and the end. The DAV-02 system is already visible on the outer concrete edge of the wall during assembly. In this way a deviation can easily be detected at an early stage and the necessary corrective measures can simply be taken before the concrete has been poured into the inner side of the casing.

20 In addition, mistakes are often made in the work on the location of pipelines. Repairing this is difficult and expensive.

With the DAV-02 system, the piping points are already installed in the factory according to the plan, so that human failure on the construction site can be considerably reduced.

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Time saving:

When pouring the concrete with the current load system, it is necessary to wait from 1 to 3 days, depending on the weather, for the hardening of the concrete, before the system can be moved for the continuation of a new set-up, while the concrete shell with the DAV-02 system already ensures sufficient rigidity and stabilization, so that the curing time does not have to be waited for.

You can in principle proceed directly to the next phase.

10 Manufacture of columns:

In the manufacture of columns with the current formwork system, each column is different and the dimensions of the columns are made as desired or required.

Because the dimensions are different every time, the positioning system 15 also needs to be adjusted and dismantled each time, which of course is very time-consuming and labor-intensive. The production of a column is, apart from all factors, also a time-consuming matter.

Think of a situation in which an incredible number of columns occur in a project. With a traditional formwork system it is then hardly possible to persevere without sacrificing speed. Another option is of course prefab columns. Here are the traditional grounds with regard to the enormous weight and logistical problems.

With the DAV-02 system it is possible to finish (or order) standard columns with any desired factory size, comparable to prefab columns while a significant reduction in weight is possible.

The speed is not at stake and the working conditions are more effective, whether it is a traditional formwork system or prefab columns.

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Working in water or sea:

With the current load system it is almost impossible to work in water or in the sea, while the applicability of the DAV-02 system offers more possibilities. The casing is factory-ready to be sunk into water. After all, no post-processing on the formwork is required, only poor placement on the subfloor or substructure.

Although working in an aqueous environment will always lead to problems compared to a dry yard, the DAV-02 system offers the possibility of reducing the number of operations and the drying time of the concrete due to the reduction of the number of operations and the drying time. (With the DAV-02 system this is not to be taken into account) more efficiency compared to traditional formwork systems. The dry dock does not have to be maintained for a long time.

Pouring concrete from the floor foundation: 15 This involves additional work when pouring the floor foundation with the current formwork system. Work such as preparing the formwork system and the work involved. While with the DAV-02 system the DAV-02 system itself remains behind in the foundation and therefore disappears in the foundation itself. There are therefore no additional activities involved, such as removing the formwork system again and thereby removing the demolished materials.

After all, the construction site then remains clean from such waste.

Use of materials for foundation pouring with the current formwork system: 25 While the current formwork system requires materials and tools, the DAV-02 requires much less hand tools and additive materials. The benefits can be broken down into costs and safety (just think of tools lying around) 30 7

Groundwork and formwork:

Working in the first base layer entails a disadvantage with traditional formwork. The soil around the formwork must be removed again before the removal of the formwork after the dumping.

5 The soil or sand makes it difficult to wring the formwork. This extra operation takes time and money.

The DAV-02 system can be considered as a lost form of formwork, so that the entire process of removing the earth around the formwork is canceled.

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Processing of the insulation in the casing:

If desired, it is possible to provide the DAV-02 with insulation material. In this case the insulation material is processed or integrated in the outer layer 15 of the DAV-02. Since the insulation has already been provided in the casing, this entails many advantages, such as, for example, the masons who can start work immediately without being dependent on the insulation staff.

Figures 1 to 7 show various exemplary embodiments of the invention.

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Claims (5)

1. The DAV-02 system must be seen as a lightweight concrete building element casing that also serves as lost formwork and makes traditional load systems that are subsequently removed superfluous. The principle is based on a system whereby a casing of concrete, or a replaceable material for concrete such as gas concrete, is produced from the original component. 2. This casing comprises an iron mesh structure in the core as reinforcement 10 to ensure rigidity and stability. The product is custom-made in the factory and, if desired, provided with the necessary reinforcement and piping on site. Different variants are possible in which the pipework and / or reinforcement is installed on the construction site. 3. For this purpose, the concrete casing must be manufactured in parts so that after the pipework and reinforcement has been fitted, it can be closed on the construction site, comparable to the existing traditional formwork method. The product is significantly lighter than prefab concrete elements, more post-processing is possible on the construction site in comparison with prefab building elements, and there is no question of dismantling as this is a lost load system in the light of the traditional formwork systems. 4. Since the DAV-02 is simple and flexible to use, it is also a safer system compared to the current formwork system. This because the DAV-02 can be produced in smaller sizes and is lighter in weight, it reduces the risk of damage during transport on the road, for the environment and at the construction site. 30 1037715 5. I have gradually come to the following conclusion. The DAV-02 system is a middle ground between prefabricated building elements and traditional formwork systems. It is a middle way between traditional building methodology and modern prefab construction. If desired, it is possible to provide the DAV-02 with insulation material. In this case the insulating material is processed or integrated in the outer layer of the DAV-02, 1037715