JPS5837267A - Repairing of prefabricated wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a prefabricated wire repair method.

With the adoption of prefabricated construction methods, mortar has been used to fill the joint wires of each PC (precast concrete) board, but as time passes, the joint concrete parts shrink due to the external temperature and temperature. This causes water leakage.

For this reason, prefabricated wire waterproofing is performed in advance, and in particular, for joint wire waterproofing on rooftops, rubber-based asphalt is applied while pouring waterproofing material.

That is, in the past, rubber was powdered and mixed into asphalt, produced in a factory, melted with heat on site, and poured into joints using a funnel or the like.

However, with this, due to seasonal changes such as summer and winter, it melts away in the summer,
In winter, condensation occurs, expansion cracks occur, and the material collapses, causing leaks.

Taking this into consideration, the above-mentioned asphalt rubber was poured into the joints, and then a sheet of asphalt was placed on top of the asphalt rubber before the asphalt was detected, and the result was the same, as it was not elastic.

As the asphalt is raised high, water accumulates at the terminals, and due to the aging and peeling of the rubber and asphalt, it enters the 111m section of the structure and causes water leakage. The present invention is an improvement that takes these types of drawbacks into consideration.

The color in Figure 1 is a simplified side cross-sectional view of the waterproof material on the prefabricated wire at the time of completion and construction. 1 is a PC board, 2 is joint concrete such as mortar, and 3 is the waterproof material mixed with rubber and asphalt on the prefabricated wire. .

However, over the years, this waterproof material 3 cannot cope with natural weather phenomena due to its physical properties, and the organic material deteriorates and ages. In the winter, repeated hardening causes expansion cracks and peeling, which causes rainwater to infiltrate.

In Figure 1, 3a shows the area where cracks have occurred, 3) shows the depressed part of the waterproof material from the time of completion in Figure 1, and 3C shows the edge of the waterproof material where dirt, dust, etc. have formed due to summer weather conditions. A flow phenomenon of the waterproof material occurs on top, causing peeling and water leakage.

In this way, under natural conditions such as temperature differences, solar heat, and dry/wet differences, the waterproof material 3 is accelerated to change its physical properties, resulting in water leakage.

Conventional rubber-based adhesives are often used to attach rubber sheets, but they are weak against water and even if the sheet itself is waterproof, rubber-based adhesives are vulnerable to water. It uses materials that are resistant to adhesives and water.

The present invention also proposes a repair method in which these waterproof materials cannot be completely removed, and the existing waterproof layer is used as a foothold, and a new waterproof material and adhesive are coated over it.

> 2 tm a N6 is a sequential side sectional view showing a repair process according to the present invention. First, Figure 2 a shows the waterproof material 3 that has aged and cracked and peeled off.According to the present invention, first, y? As shown in Figure 2, cut off the area 3d where the edge has flowed onto dirt, dust, etc. due to summer weather conditions and clean it thoroughly.

As shown in Figure 2C of the spear 2, a polymeric material 4 made by mixing rubber and asphalt into a colloid is injected into cracks in the waterproof material 3, and at the same time, the waterproof adhesive 3 is applied to the entire surface.

Next, special polyethylene 5, which does not dissolve in toluene thinner, is applied to the spear 5 on the coated layer of the polymer material 4 of rubber and asphalt to prevent expansion and contraction. This special polyethylene film is made by placing a polyethylene film in the form of a rectangle on top of a highly foamable polyethylene sheet facing down. (Product name: B8 to 108 Mirror Super) Furthermore, to the rice 4, add the middle end of the layer of special polyethylene 5 to the PC board 1.
A polymeric material 6 of rubber and asphalt (trade name B8 -OT caulking) is filled in the area in contact with the material so as not to peel off.

Next, as shown in Fig. 2 (d) on 5vl, a waterproof adhesive layer (product name: 3 day -OT phalt) 7 made by mixing asphalt with the above-mentioned rubber to form a colloid is applied on the special polyethylene layer 5.
Finally, add silver to Asphalt 6 from above and stir to create a layer that protects the waterproof layer of asphalt-based silver and reflects and blocks the heat and light of the sun (product name). BEIK-07 aluminum coating) 8
Finished by coating.

The repair method developed in this way prevents the above-mentioned drawback of aging by using waterproof adhesives that are resistant to water and waterproofing materials that do not deteriorate or deform.

Claims (1)

[Claims] In prefabricated wire waterproofing where rubber-based asphalt is applied as a waterproof layer to the joint wire between PC boards for prefabricated wires, if the waterproof layer ages and causes water leakage, repair of the waterproof layer is required. In the case of step 1, the ends are cut off and cleaned, and the cracks and other damaged parts of the waterproof layer are covered with a polymeric material that is both waterproof and adhesive, made by mixing prepared asphalt and straight asphalt to form a colloid of rubber. After the step 2 of injecting and applying it to the entire surface, and the step 2, a special polyethylene that does not dissolve in toluene thinner, that is, a high-expandable polyethylene sheet F, is placed on the bottom and a constant weight polyethylene film is placed on top of it. 3. A factory in which the material is attached as a waterproof and insulating material; a step 4. in which the ends of the special polyethylene are filled with a polymeric material of rubber and asphalt; and a colloidal polymeric material of rubber and asphalt on the special polyethylene. This prefabricated wire repair method is characterized by comprising a step 5 of re-applying the wire, and a step 6 of finishing by finally applying a layer of asphalt-based silver made by adding silver to asphalt and stirring it.