JP2006014755A - Fireproof door frame and inorganic filler for fireproof door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inorganic filler for a fireproof door facilitating filling work for a hollow part of a door frame, highly efficiently manufactured even in a case of factory manufacture, being lightweight and strong against an impact, and imparting the door frame with a sufficient fireproof performance. <P>SOLUTION: This inorganic filler is composed of 30-60 wt% Portland cements, 20-60 wt% perlite with grain size of 0.15-2.5 mm, 20-60 wt% ALC (autoclaved light weight concrete) powder with grain size of 0.07-0.7 mm and 0.5-1.5 wt% thickener and, in filling, it becomes a putty state by adding water thereto and kneading it. The factory manufacture becomes possible by filling and solidifying an inorganic reinforcing material in the hollow part of the door frame to provide the lightweight fireproof door frame 2 with superior fireproof performance which is disposed in the outer circumference of a fireproof door board 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inorganic filler filled in a hollow portion of a fireproof door frame and a fireproof door frame filled with the inorganic filler in a hollow portion.

  With the enforcement of the Building Standards Act and the enforcement order revised in June 2000, the performance level of fireproof materials and fireproof structures will be clarified, and fireproof doors will be adopted for the doors of buildings. It is increasing.

  As shown in FIG. 1, the fireproof door is a fireproof door frame disposed on the outer periphery of the fireproof door plate 1 in order to join and improve the airtightness of the fireproof door plate 1 that is opened and closed and the opening housing 3 of the building. It consists of two. The material of the fireproof door plate 1 is generally made of iron, but there is also a wooden door whose surface and / or inside is specially treated. The fireproof door frame 2 is generally made of iron regardless of whether the fireproof door plate 1 is made of metal or wooden, and has a structure having a hollow portion inside.

  When attaching the fireproof door to the opening housing of the building, when the housing is a wet wall, for example, as shown in FIG. 2, the fireproof door frame 2 is welded and joined to the reinforcing bar 4a embedded in the RC housing 4 in advance. Thereafter, a method of filling the gap between the inside of the refractory door frame 2 and the RC housing 4 with mortar 5 and closing it is common.

  When the housing is a dry wall, for example, as shown in FIG. 3, it is attached in advance to the fireproof door frame 2b on the door frame mounting channel material 6a arranged in the inner hollow portion of the wall plate material 6 such as a calcium silicate plate. The attached mounting plate 2a is welded and joined with the mounting hardware 6b. Due to the difference in construction method, it is not necessary to fill anything inside the door frame 2 in the dry wall. However, the fireproof door frame 2 constructed in a hollow state may be filled with a heat insulating material such as rock wool because of its poor sound insulation performance.

  As for fireproof performance as a fireproof door, it goes without saying that the fireproof performance of both the fireproof door plate and the fireproof door frame must be satisfied, but the most important means for improving the fireproof performance of the fireproof door frame is in the event of a fire. It is to suppress the deformation of the frame caused by the heat of.

  In the case of the wet wall mounting method described above, mortar is filled in the hollow portion of the fireproof door frame to increase the structural strength, and even if the frame steel material is softened by heat during a fire, the mortar in the frame is softened and In order not to deform, the deformation of the fireproof door frame is suppressed. However, since filling the refractory door frame with mortar is carried out at a construction site, there are problems associated with complicated operations such as installation of a kneading mixer and installation of an antifouling sheet due to mortar scattering. Also, since mortar filling work is generally carried out from a slight gap with the housing after installation of the refractory door frame, it is necessary to fill the refractory door frame in a complex shape to every corner and fill the horizontal part above the frame. It was difficult to do, and the defect part was easy to occur.

  On the other hand, in the case of an installation method to a dry wall, the hollow portion of the fireproof door frame is not filled with anything, or it is only filled with a heat insulating material such as rock wool having no structural strength. The frame is easily deformed by heat during a fire. Therefore, in order to suppress the deformation of the fireproof door frame, it is necessary to take new measures such as adding a reinforcing steel material to the hollow portion of the door frame and / or increasing the number of joints between the door frame and the housing in large quantities. Has occurred.

  In addition to the above-mentioned general fireproof door frame, there is also a fireproof door frame composed only of cement and mortar. For example, in Japanese Utility Model Publication No. 55-2954, water is added to cement and sand, and if necessary, aggregate is added and kneaded, poured into a mold, solidified, and then demolded. A fireproof door frame to be manufactured is described. However, such a refractory door frame composed only of cement and mortar is susceptible to cracking because it is vulnerable to impacts such as opening and closing of the door, and has a problem that its workability to the frame is extremely poor because of its high density.

Furthermore, Japanese Patent Publication No. 7-99067 proposes a door frame filled with a heat-crosslinking type melanin resin, but the resistance to impact is improved, but it is the same as the door frame described in Japanese Utility Model Publication No. 55-2954. However, because of its high density and weight, there is a problem that workability is remarkably poor. Further, Japanese Patent Publication No. 51-11859 and Japanese Utility Model Publication No. 58-44778 describe door frames filled with fiber materials such as glass fibers, but in the same way as in the case of conventional dry wall mounting methods. The fireproof performance is not enough.
Japanese Utility Model Publication No. 55-2954 Japanese Patent Publication No. 7-99067 Japanese Patent Publication No. 51-11859 Japanese Utility Model Publication No. 58-44778

  In view of such a conventional situation, the present invention is excellent in filling properties, can be easily filled into a hollow portion even with a door frame having a complicated shape, and can be efficiently produced even in the case of factory production, An object of the present invention is to provide an inorganic filler for a fireproof door frame that is lightweight and resistant to impact and can impart sufficient fireproof performance to the door frame.

  In addition, by using the inorganic filler for the fireproof door frame, it can be produced at the factory and transported to the construction site, and mounting on the wet wall can reduce the complicated and difficult work associated with filling the reinforcing material. An object of the present invention is to provide a fireproof door frame that is light in weight, resistant to impact, and excellent in fire resistance, capable of suppressing an increase in the number of reinforcing steel materials and joints, which are disadvantageous in cost.

  In order to achieve the above object, the inorganic filler to be filled in the hollow portion of the fireproof door frame provided by the present invention includes Portland cement, pearlite having a particle size of 0.15 to 2.5 mm, and a particle size of 0.07 to 0. It consists of a 0.7 mm ALC powder and a thickener, and is characterized by being putty-like by hydro-kneading at the time of filling.

  In the inorganic filler for a fireproof door frame of the present invention, Portland cement is 30 to 60% by weight, pearlite is 10 to 30% by weight, ALC powder is 20 to 60% by weight, and a thickener is 0.5 to 1. It is preferable to contain 0.5 weight%.

  The present invention also comprises Portland cement, pearlite having a particle size of 0.15 to 2.5 mm, ALC powder having a particle size of 0.07 to 0.7 mm, and a thickener. Provided is a fireproof door frame characterized in that an inorganic filler for a fireproof door frame is filled and solidified in a hollow portion of the fireproof door frame.

  According to the present invention, it is excellent in filling property, and can be easily filled into a fire-resistant door frame having a complicated shape without a defect portion, whether it is factory production or on-site construction, and it is lightweight after solidification. An inorganic filler for a fireproof door frame that is excellent in structural strength and can suppress deformation of the door frame due to heat during a fire can be provided.

  By using the inorganic filler for the fireproof door frame of the present invention, not only can it be constructed at the construction site, it can be produced at the factory and transported to the construction site, it is lightweight and high in strength, and has excellent fireproof performance. In addition, it is possible to provide a fireproof door frame that is excellent in workability such as shortening the mounting time. In addition, the installation to the wet wall eliminates the complicated and difficult filling work of the conventional inorganic reinforcing material such as glass wool, and only the filling work into the gap between the frame and the door frame is necessary. It is possible to suppress the disadvantageous increase in the number of joints between the reinforcing steel material and the frame.

  The inorganic filler for a refractory door frame according to the present invention is a cement admixture containing Portland cement, pearlite, ALC powder, and a thickener as main components and putty-like by hydro-kneading at the time of filling. Therefore, it is possible to easily fill the hollow part of the door frame in the door frame installation work at the construction site and the door frame manufacturing process in the factory, and even a complicatedly shaped door frame is filled without a defective part. It is possible.

  In particular, since this inorganic filler for fireproof door frame is putty-like when filled, it does not leak from the open end of the door frame, but leaks from the end of the door frame as in the case of slurry. The troublesome work to prevent is unnecessary. In addition, it is excellent in workability such as being easy to handle and easy to smooth the surface. Furthermore, since the door frame is usually composed of three sides of hollow steel material, it must be reversed to fill the other side, but the putty-like inorganic filler for fireproof door frame of the present invention fills one side. Even if the door frame is turned over after that, the filler has an appropriate hardness so that the filler does not fall off.

  Moreover, since the said inorganic filler for fireproof door frames is a cement mixture, after filling the hollow part of a door frame, it solidifies gradually and can obtain a fireproof door frame easily. Particularly in a factory, it is preferable to produce a fireproof door frame by filling the door frame with an inorganic filler for the fireproof door frame and solidifying it. In this case, whether it is a wet method or a dry method, it is only necessary to attach the fireproof door frame to the frame at the construction site, and if necessary, the gap between the frame and the fireproof door frame may be filled with an inorganic filler. The troublesome work can be reduced.

  The inorganic filler for a fireproof door frame of the present invention has a compressive strength that can suppress deformation of the door frame due to heat after solidification, and is also resistant to impact. Thus, since the inorganic filler after solidification has sufficient strength and is a refractory, the additional amount of the reinforcing steel material provided in the door frame can be greatly reduced particularly in the dry construction method.

In addition, since the filled and solidified inorganic filler for the fireproof door frame has penetrability enough to allow screws to pass, there is no problem even when a hardware part such as a receiving plate is screwed to the fireproof door frame. Moreover, the filled and solidified inorganic filler for the refractory door frame has a density of about 0.5 g / cm ³ and about 1/4 of the mortar, and is excellent in light weight. The frame is lightweight and easy to handle.

  In the inorganic filler for a fireproof door frame of the present invention, Portland cement is 30 to 60% by weight, pearlite is 10 to 30% by weight, ALC powder is 20 to 60% by weight, and a thickener is 0.5 to 1. It is preferable to contain 0.5 weight%. If the Portland cement content is less than 30% by weight, the compressive strength of the solidified filler is insufficient, so that deformation of the door frame due to heat cannot be suppressed. If the content of Portland cement exceeds 60% by weight, the weight of the solidified filler will increase and the fireproof door frame will not be able to stand up by one person, or the hardness after solidification will increase. Inconveniences such as a decrease in the penetration of the steel will occur.

  Further, when the pearlite content is less than 10% by weight, the wrinkling is worsened. On the other hand, when it exceeds 30% by weight, the surface becomes rough and smooth finish becomes difficult. The particle size of pearlite is preferably in the range of 0.15 to 2.5 mm. If the particle size of the pearlite is less than 0.15 mm, the putty-like filler increases in stickiness and the wrinkle becomes worse, and if it exceeds 2.5 mm, a smooth surface finish becomes difficult.

  If the content of ALC powder is less than 20% by weight, the surface becomes rough and smooth finishing becomes difficult. Moreover, since ALC powder has a higher bulk density than pearlite, the compressive strength increases as the content increases, but at the same time the density and weight of the filler also increase, so preferably 60% by weight is the upper limit. . The particle size of the ALC powder is preferably 0.07 to 0.7 mm. When the particle size of the ALC powder is less than 0.07 mm, the putty-like filler increases in viscosity and the separation becomes worse. Conversely, when it exceeds 0.7 mm, the surface becomes rough and smooth finishing becomes difficult.

  Furthermore, as content of a thickener, the range of 0.5 to 1.5 weight% is preferable. When the thickener is less than 0.5% by weight, the putty-like filler is insufficiently sticky and a smooth surface finish becomes difficult. On the other hand, if the thickener exceeds 1.5% by weight, the viscosity becomes excessive and the wrinkling becomes worse, and the filling operation becomes difficult. As the thickener, those conventionally used for thickening cement admixtures and the like may be used. For example, Metroze (trade name) manufactured by Shin-Etsu Chemical Co., Ltd., Marvo manufactured by Matsumoto Yushi Seiyaku Co., Ltd. Rose (trade name) or the like can be used.

  As raw materials, Portland cement, pearlite, ALC powder, and thickener are blended in the proportions shown in Table 1 below, and 40 parts by weight of water is added to 100 parts by weight of these blended raw materials and kneaded. Thus, the putty-like fillers of Samples 1 to 13 were obtained.

  The raw material Portland cement is ordinary Portland cement made by Taiheiyo Cement Co., Ltd., and pearlite is 10% made by Taiheiyo Pearlite Industries Co., Ltd. A mixture was used. As ALC powder, Sumitomo Metals having a particle size of 0.07 mm to 0.15 mm is 60% by weight, a particle size of 0.15 to 0.3 mm is 30% by weight, and 0.3 to 0.7 mm is 10% by weight. A product made by Mine Sipolex Co., Ltd. was used. As a thickener, Metroise SM400 manufactured by Shin-Etsu Chemical Co., Ltd. was used.

The putty-like fillers of Samples 1 to 13 were filled in the hollow portion of the door frame. The hollow portion of the door frame had a substantially rectangular cross section and a cross sectional area of about 5340 mm ² . At that time, workability at the time of filling was evaluated, and the results are shown in Table 2 below. That is, the time required for filling the putty-like filler in the range of 1 m in the length of the hollow part of the door frame is measured, and when this filling time is 8 minutes or less, there is no problem in terms of work efficiency, so it is acceptable. did. In the evaluation of the finish, the ease of surface finishing and the smoothness of the surface were comprehensively evaluated. In addition, as an evaluation of hardness, the door frame was inverted 180 degrees immediately after filling with the filler, and when the filler was not deformed or dropped out, it was accepted.

  As described above, the performance of each fireproof door frame obtained by filling and solidifying the hollow portion with the putty-like filler was evaluated, and the results are also shown in Table 2 below. That is, regarding the penetration of the screws, when the screws were inserted into the screw holes arranged for mounting the hardware of the refractory door frame with an electric screwdriver, the screws were allowed to penetrate without any problems. As for lightness, the weight of the entire fireproof door frame was measured, and when the weight exceeded 80 kg, it was impossible to stand up alone. Further, the deformation resistance at the time of heating was determined to be acceptable when a part of the fireproof door frame was heated with a burner for 30 minutes and there was no deformation. In Table 2 below, ○ in the evaluation column indicates pass and × indicates failure.

  From the above results, Samples 1 to 5, which are examples of the present invention, were excellent in workability, surface finish, and hardness at the time of filling the filler, and were obtained by filling and solidifying the filler. It can be seen that the fireproof door frame is excellent in screw penetration, light weight, and deformation resistance during heating.

  On the other hand, in Comparative Example 1, since the amount of cement was small, the compressive strength was reduced, and the door frame was deformed during heating. In Comparative Example 2, since the amount of cement is large, the solidified filler becomes too hard to penetrate the screws, and the weight is inferior. In Comparative Example 3, the amount of pearlite is small and the wrinkle separation is bad, so that the filling time is long and the workability is poor. In contrast, since Comparative Example 4 has a large amount of pearlite, the surface finish is inferior.

  Moreover, since the comparative example 5 has few ALC powders and many pearlites, the surface finish is inferior. Since Comparative Example 6 has a large amount of ALC powder and does not contain pearlite, it is difficult to separate and has a long filling time and is inferior in workability at the time of filling. Comparative Example 7 has less thickener and is inferior in surface finish. In Comparative Example 5, there are many thickeners, and the separation time is poor, so the filling time is long and the workability is poor.

It is a front view of a fireproof door. It is sectional drawing in the horizontal direction of the fireproof door attached to the housing of the wet wall. It is sectional drawing in the horizontal direction of the fireproof door attached to the housing of a dry-type wall.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fireproof door board 2 Fireproof door frame 2a Mounting plate 3 Opening housing 4 RC housing 4a Reinforcement 5 Mortar 6 Wall board material 6a Door frame mounting channel material 6b Mounting hardware

Claims (3)

  An inorganic filler for filling a hollow portion of a fireproof door frame, Portland cement, pearlite having a particle size of 0.15 to 2.5 mm, ALC powder having a particle size of 0.07 to 0.7 mm, and a thickener An inorganic filler for a refractory door frame, characterized in that it is putty-like by hydro-kneading at the time of filling.   2. Portland cement is 30 to 60 wt%, pearlite is 10 to 30 wt%, ALC powder is 20 to 60 wt%, and thickener is 0.5 to 1.5 wt%. The inorganic filler for fireproof door frames described in 1. A fireproof door frame, wherein the inorganic filler for a fireproof door frame according to claim 1 or 2 is filled and solidified in a hollow portion of the fireproof door frame.

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