NL9401021A - Method for applying concrete mortar to produce a reinforced concrete construction - Google Patents

Abstract

To allow concrete-mortar supply hoses to be guided without problems between the dense reinforcement (armouring) arrangement of a concrete construction to be produced and to allow the vibrating needles for compacting of the concrete mortar to be similarly guided, use is made, within the boundaries of the construction to be produced, of cagelike ducts which are attached to the armouring before the concrete mortar is poured.

Description

Title: Method for applying concrete mortar for the manufacture of a reinforced concrete structure.

The invention relates to a method of applying concrete mortar for the manufacture of a reinforcement concrete construction.

In the manufacture of concrete structures with relatively much reinforcement, problems are encountered with filling the spaces between the reinforcement parts uniformly without cavities and gravel nests with concrete mortar. Too dense reinforcement makes the construction difficult to access. The commonly used supply hose to limit the drop height of the concrete mortar is difficult to maneuver between the reinforcement parts and the vibrators for compacting the concrete mortar can jam locally between the reinforcement parts, whereby some parts of the concrete mortar are insufficiently moved which leads to poor compaction locally.

Another example, where the same problem arises, is making sloping walls of reinforced concrete or walls that are not vertical.

In the manufacture of such walls, it is usually impossible to get the supply hose of the concrete mortar to the required depth. This is all the more true for the poker vibrators, because the place of the reinforcement can no longer be seen due to the applied concrete mortar. The poker vibrators would always jam.

The object of the invention is to be able to avoid these drawbacks and for this purpose the method is characterized in that cage-shaped tubes are attached to the reinforcement within the boundary of the construction to be manufactured, before the concrete is poured. The hose is led into one or more of the tubes and the same applies to the internal vibrators.

In general, the tubes for guiding the pouring hose will have a larger diameter and a greater mutual distance than the tubes for the internal vibrators. For example, the pouring hose sleeves have a diameter of 25 cm and a distance of 2.5 m, while the vibrating tube has a diameter of 12 cm and a distance of 80 cm.

The tubes must be cage-shaped and can in principle consist of various materials. Due to the good adhesion to concrete, reinforcing steel tubes are preferred. These tubes can then be produced simultaneously with the reinforcement during the manufacture of the reinforcement.

It is possible for several tubes to be placed one behind the other, such that they are laid in one or more bends. It is also possible that in the manufacture of the tubes they have one or more bends.

This makes it possible to guide the supply hose for the concrete mortar to places that are difficult to access. This may equally well apply to the internal vibrator of the concrete compaction machine.

The invention also relates to a tube made of reinforcing steel intended for use in the method according to the invention.

The invention will now be further elucidated with reference to the figures.

Figure 1 shows a view of a sleeve to be used for guiding a hose for pouring concrete mortar.

Figure 2 shows a top view of the tube according to Figure 1.

Figure 3 shows a view of the reinforcement for an angled wall of reinforced concrete, manufactured by means of the invention, with the outer reinforcement omitted.

Figure 4 shows a view along the line IV-IV in Figure 3. with the sloping wall poured and the inner reinforcement not shown.

The cage-shaped tube 1 shown in Figures 1 and 2 is intended to be attached to the reinforcing steel of a concrete construction to be manufactured, for example a wall, in order to produce the hose for supplying the concrete mortar to the underside of the concrete without any problem. guide the structure and raise it gradually and in a controlled manner during the pouring of the mortar. The tube is made of reinforcing steel. For example, the diameter is 25 cm and the length, depending on the height of the construction, is a few meters.

Similar cage-shaped tubes 2, but of smaller diameter (for example 12 cm) are used to allow vibrating needles for compacting the mortar into the construction unhindered.

Figure 4 shows that the mutual distance of the tubes 1 is greater than that of the tubes 2, for example the distance between the tubes is 2: 80 cm.

Tubes 1 and 2 can be produced at the same time as the reinforcement and are not recovered after pouring.

Claims (6)

Method for pouring concrete mortar for the manufacture of a concrete structure provided with a reinforcement, characterized in that cage-shaped tubes are attached to the reinforcement within the boundary of the construction to be manufactured before the concrete mortar is poured. A method according to claim 1, wherein the concrete is poured via a hose, characterized in that the hose is guided in one or more of the tubes. Method according to claim 1 or 2, wherein at least one vibrator is used for compacting the concrete mortar, characterized in that the vibrator is guided in one or more of the tubes. Method according to one of the preceding claims, characterized in that the tubes are made of reinforcing steel. Cage-shaped tube of metal and / or plastic intended for use in the method according to one of the preceding claims. Cage-shaped tube according to claim 5, characterized in that the tube is mainly made of reinforcing steel.