NL9101565A - Masonry structure - Google Patents

Abstract

In order to allow a masonry structure comprising bricks or blocks which are joined together by mortar or cement to absorb tensile stresses, the structure is at least partially reinforced, in that a corrosion-resistant reinforcement is incorporated in one or more mortar or cement joint(s). This reinforcement preferably comprises a thin strip formed by fibres or threads, for example made from aramid, which are embedded in epoxy resin. To replace a lintel in the masonry joint, the reinforcement may be arranged on the horizontal row of bricks or blocks immediately above an opening in the masonry structure or may be distributed throughout the entire masonry structure.

Description

Title: Masonry.

The invention relates to masonry consisting of bricks or blocks which are joined together by mortar or glue.

Both concrete and masonry have the disadvantage that they can only absorb small tensile stresses. In masonry tensile stresses especially occur above a window or doorway. It is therefore customary for a lintel that can absorb tensile stress to be applied to the top of a window or doorway directly under the masonry. This solution is relatively expensive and often comes at the expense of aesthetics.

In other places in the masonry where tensile stresses can occur, for example in the vicinity of corners, often no suitable solutions are available so that cracks can arise in those places.

The object of the invention is to provide a solution to the above problem, and to this end the masonry is at least partially reinforced because one or more mortar or glue joints incorporate a corrosion-resistant reinforcement.

Steel is less suitable because of the small thickness and the porosity of a mortar or adhesive layer in the joints of a masonry.

Plastic, carbon or (mineral) glass can be mentioned as the material for the reinforcement.

The reinforcement can be applied in the form of individual wires, cables or strips. However, in order to be able to easily apply the reinforcement, it is preferred that it consists of a thin strip formed by fibers or wires embedded in expoxy resin. Such a thin strip can be unwound from a roll and is easy to handle. A very suitable material for the fibers or threads is aramid.

In order to be able to anchor the reinforcement, the thin strip can be folded back around a stone or block at its end. This folding back would be difficult in case of reinforcement of steel wire or steel bars. In addition, slots should be milled in the masonry to accommodate the relatively thick steel wires or steel bars.

The reinforcement can also consist of a fabric.

To replace a lintel in the masonry joint on the horizontal row of bricks or blocks directly above an opening in the masonry, the above reinforcement can be applied in the masonry.

In areas prone to earthquakes or subsidence, the reinforcement may be distributed over the entire masonry.

The invention will now be explained in more detail with reference to the figures.

Figure 1 shows a view of a piece of masonry with a window opening in which a reinforcement is used to replace the usual lintel.

Figure 2 shows a cross section along the line II-II in Figure 1.

Figure 3 shows a view of a piece of masonry with the ends of the reinforcement folded back up.

The masonry shown in Figure 1 has a window opening, which is bounded at the top edge by a horizontal row of masonry blocks or blocks. A lintel is missing. In order to reinforce this horizontal row of masonry bricks against tensile stress, a tape-shaped strip 1 consisting of epoxy resin-embedded fibers of preferably aramid has been placed in the mortar or glue joint on the row. Glass fibers, mineral glass fibers and carbon fibers can also be substituted for the aramid fibers.

Individual wires or strips of said material which are not embedded are possible, but can be applied less easily. However, a fabric made of aramid or other strong corrosion-resistant fabrics is a good alternative to the tape made of epoxy resin-embedded fibers.

The ends 2 and 3 of the strip 1 are folded back around a brick or block to better anchor the strip.

Figure 1 shows that the ends of the tape are folded down and Figure 3 shows that these ends are folded back up. The latter option is preferred for ease of application.

The embodiment according to figure 3 is characterized in that the reinforcement is not arranged above an opening in the masonry, but in the vicinity of an angle where cracks form due to tensile stresses.

In earthquake-prone areas and areas where there is a risk of subsidence, the reinforcement can be distributed over the entire masonry.

Various variants are possible within the scope of the invention.

Claims (7)

Masonry consisting of bricks or blocks joined together by mortar or glue, characterized in that the masonry is at least partly reinforced because one or more mortar or glue joints incorporate a corrosion-resistant reinforcement. Masonry according to claim 1, characterized in that the reinforcement comprises plastic and / or carbon and / or glass and / or mineral glass. Masonry according to claim 2, characterized in that the reinforcement consists of a thin strip formed by fibers or wires embedded in epoxy resin. k. Masonry according to claim 3 *, characterized in that the fibers or wires consist of aramid. Masonry according to claim 4, characterized in that the thin strip is folded back at its ends around a stone or block. Masonry according to claim 1 or 2, characterized in that the reinforcement consists of a thin fabric. Masonry according to any one of the preceding claims, characterized in that the reinforcement for replacing a lintel in the masonry joint is arranged on the horizontal row of bricks or blocks directly above an opening in the masonry. Masonry according to one of Claims 1 to 6, characterized in that the reinforcement is arranged distributed over the entire masonry.