JPH0635452U - General-purpose tarpaulin - Google Patents

Abstract

(57) [Summary] [Purpose] Water resistance that can be used with any of the asphalt waterproof normal temperature method (composite type method) with solvent-type or reaction-type normal temperature asphalt, the torch method with a torch burner, and the thermal method with hot-melt asphalt. Provide a modified asphalt sheet for automobiles. [Structure] Synthetic fiber non-woven fabric of polyester is used as a base material 4, modified asphalt 3 is laminated on both surfaces, the mineral particles 1 are attached to the front surface, and expanded polystyrene powder is attached to the back surface and the lap portion of the front surface. It is characterized by that.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a modified asphalt sheet for waterproofing, which is used in a portion of a concrete structure that requires waterproofing, such as a roof.

[0002]

[Prior art]

 Generally, sheet-like waterproofing materials such as asphalt roofing are provided as scrolls with a specified length and are spread and constructed at the construction site. In particular, in asphalt roofing, asphalt, which is a raw material, may soften at high temperatures and cause mutual adhesion phenomenon, which may make spreading difficult. Therefore, as a preventive measure, a method has been adopted in which fine sand, stone powder, etc. are attached to the front and back surfaces of the roofing to prevent mutual adhesion. In the modified asphalt sheet that has recently appeared on the market, the modified asphalt, which is a raw material, has more flexibility and adhesiveness, and thus the prevention of mutual adhesion has been an important issue. However, there are various types of waterproofing methods that use modified asphalt sheets: composite method, torch method, self-adhesion method, and thermal method. Depending on each method, plastic film or release paper is applied to the back and front laps. The current situation is to deal with this by laminating, spraying fine sand, stone powder, etc. This means that even with waterproof sheets made of the same material, it is necessary to change the processing method on the back side, etc., depending on the construction method used, which is a major obstacle to streamlining production, sorting inventory, and reducing inventory. Has become. In addition, the above-mentioned problems also affect the construction site. For example, the room temperature asphalt used in the room temperature method (composite method) in which asphalt sheet or modified asphalt sheet is pasted with solvent type or reactive type asphalt. Since initial adhesive strength cannot be expected so much, it is necessary to use the self-adhesion method or the torch method, and in some cases the thermal method for parts that are difficult to fit, such as the rising part and the surroundings of the accessory, and special sheets are used for the construction. I had to prepare.

[0003]

[Problems to be solved by the device]

 It is difficult to rationalize the production of modified asphalt sheets, sort inventory, and reduce the amount of inventory.In addition to dedicated sheets for waterproof construction, which is the main waterproof construction, it is necessary to prepare other dedicated sheets for waterproof construction. Tended to be complicated. In addition, it was not applicable because the method of construction could not be changed in detail. The present invention has been made to eliminate these drawbacks.

[0004]

[Means for solving the problem]

 In consideration of the above problems, the present invention is applicable to any of a room temperature method using a solvent type or a reaction type room temperature asphalt (composite type method), a torch method using a torch burner, and a heat method using a hot-melt asphalt. This is a possible general-purpose sheet. Expanded polystyrene that is easily soluble in the organic solvent contained in solvent-type or reaction-type room-temperature asphalt on the back and front wraps of the modified asphalt sheet, and is also easily soluble in the heat of the torch burner and hot-melt asphalt. The powder 2 is attached. That is, a synthetic fiber non-woven fabric made of polyester is used as a base material 4, and asphalt 3 modified with a thermoplastic rubber such as SBS or a polyolefin such as APP is laminated on both surfaces, and the surface is a mineral particle such as a sand grain or fine sand. 1 or mineral powder 5, the backside and the lap portion of the surface were adhered with expanded polystyrene powder 2. The present invention is a general-purpose waterproof sheet having the above structure.

[0005]

[Action]

 The general-purpose waterproof sheet according to the present invention is used for waterproofing roofs of concrete structures. Especially used in the asphalt waterproof room temperature construction method (composite construction method) with solvent or reaction type room temperature asphalt, flat sheets where seating does not matter much are attached with solvent type or reaction type room temperature asphalt, rising parts and parts The part that is difficult to fit is a torch burner, or in some cases, hot melt asphalt containing modified asphalt.

[0006]

【Example】

Hereinafter, examples of the present invention will be described. FIG. 1 is a sectional view of an embodiment of the present invention. The general-purpose waterproof sheet of the present invention has a synthetic fiber non-woven fabric made of polyester as a substrate 4, laminated with thermoplastic rubber such as SBS or modified asphalt 3 made of polyolefin such as APP on both surfaces, and mineral particles such as sand grains on the surface. 1. The back and front wraps are made by adhering expanded polystyrene powder (crushed product) 2. The expanded polystyrene powder 2 of the above example is easily soluble in organic solvents such as toluene and xylene contained in solvent-type or reaction-type room temperature asphalt, and is also easily soluble in heat of a torch burner and hot-melt asphalt. Is a substance. Further, by attaching the expanded polystyrene powder 2, the general-purpose waterproof sheet can be wound without interposing release paper without the modified asphalt layer 3 sticking to other objects. The general-purpose waterproof sheet is used in the asphalt waterproof room-temperature method (composite type method) using solvent-type or reaction-type room-temperature asphalt. Work around things. In addition, in the wrap, which is important for waterproof performance, a method of securely attaching with a torch burner after attaching with asphalt at room temperature can be used. Of course, this general-purpose tarpaulin can also be used for the torch method using a torch burner and the asphalt thermal method using hot-melt asphalt containing modified asphalt. By the way, a 3.5 mm thick APP-based modified asphalt sheet with 30 g / m ² of expanded polystyrene powder (pulverized product) ² attached to the back surface was prepared and tested, and the following results were obtained. Was given. (Blocking test) When two sheets were stacked and stored at a high temperature of 70 ° C under a pressure of 15g / cm ² for 2 weeks, no asphalt exudation occurred and no adhesion between the sheets was observed. It was (Adhesion test) Solvent-type room temperature asphalt (Highness Mastic, manufactured by Shoishi Kako Co., Ltd.), reactive room-temperature asphalt (Neophalt, manufactured by Shoishi Kako Co., Ltd.), torch burner, and asphalt heated to 200 ° C (Fujicon 3 type Showa) When the above sheet was adhered to a mortar plate coated with an asphalt primer using Shell Oil Co., Ltd., a sufficient adhesive force was shown.

[0007]

[Effect of device]

 The production and storage can be rationalized and the applicability in field construction will be expanded. For example, the type of waterproof sheet can be simplified in the construction of a room temperature method (composite type method) using solvent-type or reaction-type room temperature asphalt, and the method can be easily applied.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Mineral Particles 2 Expanded Polystyrene Powder 3 Modified Asphalt 4 Base Material 5 Mineral Powder

Claims (1)

[Scope of utility model registration request] 1. A room temperature construction method (composite construction method) using solvent-type or reaction-type room temperature asphalt, in which expanded polystyrene powder is adhered to the back surface and wrap portion of a modified asphalt sheet for waterproofing, a torch construction method using a torch burner, and heating. A general-purpose waterproof sheet that can be used in any of the thermal construction methods using molten asphalt.