KR200255013Y1 - Absorption joint - Google Patents

Abstract

The present invention relates to a joint installed on a floor of concrete such as a parking lot, a rooftop, an external plaza of a building structure, and a concrete placing surface such as a road surface, and includes a ceramic material including lime, silica, and reinforcing fibers. Continuously extruded, but a plurality of hollows are formed, the projection is formed on the side and the bottom side is formed by the upper and lower light type to form a groove of the upper and lower light type, to provide a joint cured at high temperature and high pressure, In order to improve the performance of joints, projections are formed on only one side of the joints and elastic joints are provided on the other side, thereby eliminating problems of corrosion, weak strength, weak cohesion with concrete, and economic feasibility. It was solved.

Description

Cemented joint joint {Absorption joint}

The present invention relates to a joint, and more specifically, including lime (Ca), siliceous (Si) and reinforcing fibers are put into a mold and extruded, and then cured under high temperature and high pressure to form a superbly-blow type, and protrusions on the sides. Provided with the formed cerament joint, the joints may be formed on both sides of the projections may be formed only on one side of the projections and the other side may be attached to the elastic material, solid and the winter temperature of the concrete The present invention relates to a joint of a cemented material that absorbs elastic stress accurately and uniformly.

Factory floors, distribution centers, warehouse floors, rooftops, parking lots, etc. are finished with mortar or concrete. At this time, the concrete or mortar finish material that is poured is different from the expansion and contraction due to the difference in expansion stress between the base and winter. Separation and cracking of both layers occur, and such cracking and separation phenomenon on the bottom surface leads to breakage of the bottom surface, which is pointed out as a problem of various defect repair and construction failure.

The most common construction method to solve such disadvantages is the guide joint forming method, which consists of saw cutting to form a cutting groove by a saw to have a certain width after 3 or 4 days of concrete placement by saw cutting. In the case of dry shrinkage crack before cutting, the effect of guide joint is less.

Another method is to absorb the elastic stress from the tree by separating the floor by a certain length by placing the wood board vertically at regular intervals, but the absorption of such elastic stress by wood This leads to the corrosion of the elastic stress absorbing part is being removed and removed.

Due to the problems caused by the corrosion of wood boards, recently molded plastic joints are used as expansion joints, and such synthetic resin expansion joints are composed of soft materials to have a slight elasticity to absorb and remove the elastic stress. This expansion joint made by synthetic resin is very effective in preventing cracks due to elimination of corrosion such as wood. However, since it is made of soft material, it is weak in strength and has little adhesive strength with concrete. There is a problem that the construction is quite difficult because the whole joint should be wrapped with mortar to keep the balance smoothly. When the concrete is placed, the horizontal vibrator is used to secure and level the concrete. As it is a weak elastic material, it is damaged and original function and form When it comes to be modified, severe cases the symptoms ll is separate from the base mortar with a new self-curing grout is generated.

The object of the present invention for solving the problems as described above, including lime (Ca) and siliceous (Si) and reinforcing fibers are put into a mold and extruded and cured in a high temperature and high pressure state is formed in the upper and lower hypotonic type side Providing the joint formed cerament material joint, the joint may be formed on both sides of the projection, the projection may be formed only on one side and the other side may be attached to the elastic material, solid and concrete according to the change in winter temperature It is to provide a joint of the cement material that absorbs the elastic stress accurately and uniformly.

Figure 1a is a perspective view showing an embodiment of a joint according to the present invention

FIG. 1B is a side view showing an installation example of the joint shown in FIG. 1A

Figure 2a is a perspective view showing another embodiment of a joint according to the present invention

FIG. 2B is a side view showing an installation example of the joint shown in FIG. 2A

* Description of the symbols for the main parts of the drawings *

2 protrusion 4 elastic material

6 hollow part 8 steel insertion hole

9: groove 10: expansion joint

20: mortar

Features of the present invention for achieving the above object includes lime (Ca) and siliceous (Si) and reinforcing fibers are put into a mold and extruded and cured in a high temperature and high pressure state to form a hypotonic hypotonic type side It is to provide a cerament joint formed with a projection.

On the other hand, in the above configuration, the joint may form a protrusion only on one side and the other side may be flat to bond the elastic material, and the protrusion may be symmetrically formed on both sides and the elastic material may not be attached.

DETAILED DESCRIPTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals are used to designate the same reference numerals in order to avoid duplication of explanation.

Figure 1a is a perspective view showing an embodiment of a joint according to the present invention, Figure 1b is a side view showing an installation example of the joint shown in Figure 1a.

Looking at one embodiment of the joint according to the present invention includes lime (Ca), siliceous (Si) and reinforcing fibers are put into a mold and extruded and then cured in a high temperature and high pressure state is formed so as to be able to enter into a flat bottom light type The side surface is composed of a ceramic material body 3 having a protrusion 2 formed thereon, and an elastic material 4 integrally attached to the opposite side of the protrusion 2 of the body 3.

In addition, a plurality of hollow portions 6 are further formed in the main body 3 of the expansion joint 10 in the longitudinal direction, and the steel insertion hole 8 is further formed at an arbitrary portion of the expansion joint 10. In the bottom portion of the expansion joint 10, a groove 9 of the upper and lower beams is further formed.

Figure 2a is a perspective view showing another embodiment of the joint according to the present invention, Figure 2b is a side view showing an installation example of the joint shown in Figure 2a.

Looking at another embodiment of the joint according to the present invention, including lime (Ca), siliceous (Si) and reinforcing fibers are put in a mold and extruded and cured in a high temperature and high pressure state to be formed into a negotiable hypotonic type, both sides Protrusions 2 are formed on the protrusions

On the other hand, the main body 3 of the joint 10 is formed with a plurality of hollow portion 6 in the longitudinal direction in the same manner as in the embodiment, the steel insertion hole ( 8) is further formed, and the bottom side portion of the joint 10 is further formed with a groove 9 of the upper and lower light type.

In the expansion joint 10 formed as described above, the cerament is a brand name of a currently marketed product, and a chemical additive for improving the performance of chemical resistance such as flowability, hardening or retardation, acid resistance and alkali resistance, etc. to be added to a cement mortar, such a configuration sera cement is being cured under conditions of saturated steam after the extruded high temperature and pressure of calcareous and siliceous materials are calcium silicate crystals, through a chemical reaction tobermorite (tobermorite, 5CaO ₆ SiO ₂ 5H By producing ₂ O), unlike general inorganic products, it exhibits very good physical properties such as high strength, dimensional safety, and durability.

In addition, the protrusion part 2 is to improve the adhesion to the concrete to be cast in the field, the higher the adhesion is required where the higher the adhesion portion in accordance with the situation of the site to be installed so as to increase the adhesion area. .

In addition, the elastic material 4 may be used as a flexible elastic resin or porous foamed resin or other elastic material, but most preferably the foam elasticity so that there is no change in temperature and moisture and corrosion by microorganisms Resin is suitable, and is attached to the main body 3 by an adhesive, which may directly apply a liquid adhesive to the main body 3 or the elastic material 4, and one surface of the elastic material 4 is adhesive tape type It can also be manufactured by the manufacturer, which can be selected arbitrarily according to the manufacturer according to the convenience of production or operation. The thickness and width of the elastic material 10 may be appropriately selected according to the characteristics of the site, and the installation position of the elastic material 4 may also be installed at the vertical part of the expansion joint 10 so that the cracks may be moved to one side. It can be induced.

In addition, the hollow part 6 may reinforce the strength of the expansion joint 10 and at the same time obtain a multi-effect of weight reduction and raw material consumption, and the number of formation of the hollow part 6 may be changed according to the demand of the load. If necessary, the hollow portion 6 may be formed without the hollow portion 6.

And, the steel insertion hole (8) is for the passage of the reinforcing member is installed on the bottom surface, and at least one arbitrarily formed according to the installation requirements of the site.

In addition, since the groove 9 formed at the bottom of the expansion joint 10 is formed in the upper and lower light type, the adhesion area with the foundation mortar 20 is increased, and the mortar 20 as much as possible into the groove 9 is provided. Because of this intrusion, it is possible to ensure the installation safety of the expansion joint 10, if the groove (9) is opposite to that shown, that is, if not formed in the upper and lower narrow form of the mortar 20 is not invaded space is formed Since the fixing property is deteriorated, the groove 9 is formed in the upper and lower light type.

The expansion joint 10 formed as described above is fixed to mortar 20 at a predetermined interval (2-8 m) before the concrete is placed by mortar 20 and the like, thereby improving adhesion to the concrete by the protrusions 2 formed on one side thereof. The elastic material 4 attached to the other side absorbs the contraction / expansion generated after the concrete pouring.

The joint according to the present invention configured as described above was cured by high temperature and high pressure after continuous extrusion molding of a ceramic material composed of various component improving agents and tension members together by an extrusion mold precisely configured in a factory. Or, it has excellent affinity with cement mortar, eliminating the separation from the foundation surface, and the product's specifications are accurate and superior in strength compared to the existing expansion joints. No segregation occurs, and precise linearity due to extrusion molding and horizontality due to cross-bending light type are ensured, so the amount of basic mortar used for vertical balance is minimized during installation, which drastically shortens the working time as well as accurate vertical balance. Being secured, the linearity as described above and Due to the horizontality, it is possible to form accurate straight cracks without the occurrence of irregular cracks. Such accurate crack formation absorbs elastic stresses precisely and uniformly due to temperature changes during the winter season, thereby fundamentally healing the causes of irregular cracks. It became.

In addition, since a large number of hollows are formed, the weight is light, so that the worker can be easily transported and installed at the installation site, and a steel insertion hole is formed so that rebar reinforcement or dowel bar treatment is possible, so that it is applicable to reinforced concrete slab structures. It is easy.

Claims (7)

In the joint, It includes lime (Ca), silicic acid (Si) and reinforcing fibers, is put into a mold and extruded, and then cured in a high temperature and high pressure state to be formed into a super-bending light type, characterized in that the protrusions (2) formed on the side Cemented joint. The joint according to claim 1, wherein the joint is formed on both sides of the projection part (2). The joint of claim 1, wherein the joint has a protrusion (2) formed on one side and the other side is formed flat so that the elastic material (10) is bonded. The joint according to any one of claims 1 to 3, wherein the joint is further provided with a steel insertion hole (8). The joint according to any one of the preceding claims, characterized in that the joint further comprises a plurality of hollows (6) in the longitudinal direction. The joint according to any one of claims 1 to 3, wherein the bottom portion of the joint is further provided with a groove of the upper and lower light type. The joint according to claim 3, wherein the elastic material (4) attaches a soft elastic synthetic resin or a porous foamed resin.