KR100898309B1 - Inter-floor insulating board for apartment house and floor construction method using thereof - Google Patents

Inter-floor insulating board for apartment house and floor construction method using thereof Download PDF

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KR100898309B1
KR100898309B1 KR1020070095007A KR20070095007A KR100898309B1 KR 100898309 B1 KR100898309 B1 KR 100898309B1 KR 1020070095007 A KR1020070095007 A KR 1020070095007A KR 20070095007 A KR20070095007 A KR 20070095007A KR 100898309 B1 KR100898309 B1 KR 100898309B1
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South Korea
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pulverized
interlayer insulation
foam
insulation sound
floor
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KR1020070095007A
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Korean (ko)
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KR20090029862A (en
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안병원
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삼우기연 주식회사
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/18Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203Separately-laid layers for sound insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/12Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/14Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
    • F24D3/141Tube mountings specially adapted therefor
    • F24D3/143Tube clips with barbed anchors
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise

Abstract

본 발명은 공동주택의 층간단열차음판 및 이를 이용한 바닥시공방법에 관한 것으로, 층간단열차음판이 발포성고무상자속에 여러개의 격벽과 격실을 가진 코어가 접착제층으로 고정되어 있으며, 상기 코어의 격실들 속에 경질우레탄 발포체의 분쇄물과 열처리된 다공성 질석의 분쇄물의 혼합물이 가압, 충진되어 있고, 접착제층이 도포된 발포성고무덮개로 상기 발포성고무상자가 밀폐되어 있는 것을 특징으로 하며, 상기 층간단열차음판과, 발포성고무로된 연결부재와, 가시형후크를 가진 온수관의 고정부재를 이용하여서 바닥을 시공하는 것을 특징으로 한다.The present invention relates to an interlayer insulation sound insulation board and a floor construction method using the same in a multi-unit house, wherein the insulation insulation sound insulation board is fixed with an adhesive layer on a core having a plurality of partitions and compartments in a foamed rubber box, The mixture of the pulverized product of the hard urethane foam and the pulverized product of heat-treated porous vermiculite is pressurized and filled, and the foamed rubber box is sealed with a foamed rubber cover coated with an adhesive layer. The floor is constructed by using a connection member made of foam rubber and a fixing member of a hot water pipe having a visible hook.
본 발명은 공동주택에서 층간의 경량, 중량충격음의 차단성능과 열차단성능이 우수하고, 강도가 우수하며, 온수관을 손쉽고 견고하게 시공할 수 있고 공동주택의 주거환경을 효율적으로 개선시켜 준다.The present invention is excellent in the light and heavy impact sound insulation and thermal insulation performance between floors in a multi-family house, excellent in strength, easy and robust construction of hot water pipes and improves the living environment of the multi-family house efficiently.
층간단열차음판, 발포성고무상자, 경질우레탄발포체의 분쇄물, 열처리된 다공성질석의 분쇄물, 코어, 격벽, 격실, 발포성고무덮개 Interlayer insulation sound insulation board, foam rubber box, pulverized hard urethane foam, pulverized heat treated porous vermiculite, core, partition, compartment, foam rubber cover

Description

공동주택의 층간단열차음판 및 이를 이용한 바닥시공방법{INTER-FLOOR INSULATING BOARD FOR APARTMENT HOUSE AND FLOOR CONSTRUCTION METHOD USING THEREOF}Inter-floor insulation sound insulation board of multi-unit house and floor construction method using same {INTER-FLOOR INSULATING BOARD FOR APARTMENT HOUSE AND FLOOR CONSTRUCTION METHOD USING THEREOF}
본 발명은 공동주택의 상, 하층사이에서 발생하는 소음과 열전달을 차단시켜서 주거환경을 효율적을 개선시킬 수 있는 층간단열차음판 및 이를 이용한 바닥시공방법에 관한 것이다.The present invention relates to an interlayer insulation sound insulation board and a floor construction method using the same to block the noise and heat transfer generated between the upper and lower floors of a multi-family house to improve the residential environment.
대한민국 등록실용신안 제0418679호에 개시되어 있는 층간단열차음판은 경질폴리우레탄발포체의 분쇄물과 일반시멘트와의 물반죽물을 압축, 건조시켜서 판상으로 성형된 것인바, 강도가 낮아서 층간단열차음판의 상면에 시멘트몰탈층을 시공할때 쉽게 파손되었었고, 흡음성이 부족하여 우수한 차음효과를 얻을 수 없는 등의 단점이 있었으며, 특히 중량충격음의 차단성능이 미흡한 단점이 있었다.The interlayer insulation sound insulation panel disclosed in Korean Utility Model No. 0418679 is formed into a plate shape by compressing and drying the water polyurethane of the crushed product of a rigid polyurethane foam and general cement. When the cement mortar layer was installed on the upper surface of the cement, it was easily broken, and there was a disadvantage of lacking sound absorbing property, so that a good sound insulation effect could not be obtained.
본 발명은 상기한 바와 같은 종래기술의 문제점을 해결하기 위한 것으로, 발포성고무덮개로 밀폐되는 발포성고무상자에 내장된 코어의 격실속에 경질폴리우레탄발포체의 분쇄물과 열처리된 다공성질석의 분쇄물의 혼합물이 가압, 충진된 것이어서 강도가 높아 시공할 때 파손될 우려가 없으며 우수한 차음효과를 발휘할 수 있는 공동주택의 층간단열차음판 및 이를 이용한 바닥시공방법을 제공하는데 그 목적이 있다.The present invention is to solve the problems of the prior art as described above, the mixture of the pulverized powder of the hard polyurethane foam and the pulverized powder of porous vermiculite in the compartment of the core embedded in the foamed rubber box sealed with the foamed rubber cover Its purpose is to provide interlayer insulation sound insulation boards and floor construction methods using the same, which can exert excellent sound insulation effect because they are pressurized and filled so that they have high strength and do not cause damage.
층간단열차음판이 발포성고무상자속에 여러개의 격벽과 격실을 가진 코어가 접착제층으로 고정되어 있으며, 상기 코어의 격실들 속에 경질우레탄발포체의 분쇄물과 열처리된 다공성질석의 분쇄물이 70 ~ 90 : 30 ~ 10의 부피비로 혼합된 혼합물이 가압, 충진되어있고, 접착제층이 도포된 발포성고무덮개로 상기 발포성고무상자가 밀폐되어 있는 것을 특징으로 한다.The interlayer insulation sound insulation board is fixed in the foamed rubber box with a core having several partitions and compartments as an adhesive layer, and the pulverized product of the hard urethane foam and the pulverized porous vermiculite are 70 ~ 90: 30 in the core compartments. The mixture is mixed and pressurized and filled in a volume ratio of ~ 10, characterized in that the foam rubber box is sealed with a foam rubber cover coated with an adhesive layer.
또한 본 발명에 의한 상기 코어의 격실들 속에 열처리된 다공성질석의 분쇄물과 경질우레탄발포체의 분쇄물이 아래쪽에서 부터 윗쪽으로 10 ~ 30 : 90 ~ 70의 부피비율로 가압, 충전되어 있는 것을 특징으로 한다.In addition, the pulverized powder of the porous vermiculite and the hard urethane foam is heat-treated in the compartments of the core according to the present invention is characterized in that the pressure from the bottom to the top 10 to 30: 90 to 70 at a volume ratio do.
그리고 발포성고무상자속에 고정되어 있으며 여러개의 격벽과 격실을 가진 코어의 격실들 속에 경질우레탄발포체의 분쇄물과 열처리된 다공성 질석의 분쇄물의 혼합물이 가압, 충진되어 있고 발포성고무덮개로 상기 발포성고무상자가 밀폐되 어 있는 층간단열차음판을 건축물의 기초면위에 있는 발포성 고무패드위에 설치하는 단계와;And a mixture of the pulverized product of the hard urethane foam and the pulverized porous vermiculite is pressurized and filled in the core compartments having a plurality of partitions and compartments, which are fixed in the foamable rubber box. Installing a sealed interlayer insulation sound insulating board on a foam rubber pad on a foundation surface of the building;
수평날개와 수직날개를 가지며 발포성고무로 된 연결부재를 상기 층간단열차음판들 사이에 접착시켜서 층간단열차음판들을 서로 연결되게 설치하는 단계와;Attaching the interlayer insulation sound insulating plates to each other by adhering a connection member made of foam rubber having horizontal wings and vertical wings to each other;
밴딩부로 부터 연장된 2개의 자유단부에 가시형 후크를 가진 고정부재로 상기 층간단열차음판위에 배관되는 온수관을 고정하는 단계와;Fixing a hot water pipe piped on the interlayer insulation sound insulation board with a fixing member having a visible hook at two free ends extending from a bending part;
상기 온수관이 설치된 층간단열차음판의 상측에 시멘트몰탈층을 타설하여 양생시키는 단계를 포함하는 것을 특징으로 한다.It characterized in that it comprises the step of curing by pouring a cement mortar layer on the upper side of the interlayer insulation sound insulation board is installed.
본 발명은 공동주택에서 층간의 경량충격음과 중량충격음의 차단성능과 열차단성능이 우수하고, 강도가 우수하여 시공할때 균열이 발생하거나 파손될 우려가 없는 내구성을 가지며, 층간단열차음판들사이에서의 차음성도 우수하고, 층간단열차음판위에 배관되는 온수관을 손쉽고 견고하게 고정하면서 시공할 수 있는 등의 장점이 있는 것이어서 시공이 용이하며 공동주택의 주거환경을 효율적으로 개선시켜 준다.The present invention is excellent in the light blocking sound and heavy shock sound insulation between the floor and the thermal shock performance in the multi-family house, and the strength is excellent, there is no fear of cracking or breakage during construction, between the insulation insulation sound insulation panels It is excellent in sound insulation, and it has the advantages of easy and solid fixing of hot water pipes piped on the inter-floor insulation sound insulation board, so it is easy to construct and improves the living environment of apartment houses efficiently.
본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 의한 층간단열차음판은 도 1과 도 2에 예시한 바와 같이 발포성고무상자(10)속에 여러개의 격벽(12)과 격실(14)을 가진 코어(core)(16)가 접착체층(18)으로 고정되어 있으며, 상기 코어(16)의 격실(14)들 속에는 경질우레 탄발포체를 평균입경이 0.5~3mm 가 되도록 분쇄한 분쇄물(20)과 열처리된 다공성질석을 평균입경이 0.5~3mm가 되도록 분쇄한 분쇄물(22)이 부피비로 70 ~ 90 : 30 ~ 10의 비율로 혼합한 것에 소량의 정착제가 첨가된 혼합물(24)이 가압, 충진되어 있고, 접착제층(26)이 도포된 발포성고무덮개(28)로 상기 발포성고무상자(10)가 밀폐되어 있다.In the interlayer insulation sound insulating plate according to the present invention, as illustrated in FIGS. 1 and 2, a core 16 having a plurality of partitions 12 and compartments 14 in the foamed rubber box 10 includes an adhesive layer ( 18), and in the compartments 14 of the core 16, the pulverized product 20 and the heat-treated porous vermiculite having a hard urethane foam are pulverized to have an average particle diameter of 0.5 to 3 mm and an average particle diameter of 0.5 to The mixture 24 in which a small amount of fixer is added is pressurized and filled by mixing the pulverized product 22 pulverized to 3 mm in a volume ratio of 70 to 90:30 to 10, and the adhesive layer 26 is applied. The foamed rubber box 10 is sealed with the foamed rubber cover 28.
도 3에는 본 발명에 의한 층간단열차음판의 다른 실시예가 예시되어 있다.3 illustrates another embodiment of the interlayer insulation sound insulating plate according to the present invention.
도 3에서 보인 층간단열차음판은 코어(16)의 격실(14)들 속에 열처리된 다공성질석의 분쇄물(22)과 경질우레탄발포체의 분쇄물(20)이 아래쪽에서 부터 윗쪽으로 10 ~ 30 : 90 ~ 70의 부피비율로 가압, 충진되어 있는것을 제외하고는 도 2에서 보인 층간단열차음판과 동일한 구조로 되어 있다.The interlayer insulation sound insulation board shown in FIG. 3 has a pulverized product 22 of porous vermiculite and a pulverized product 20 of the hard urethane foam, which are heat treated in the compartments 14 of the core 16, from 10 to 30: It has the same structure as the interlayer insulation sound insulating board shown in FIG. 2 except that it is pressurized and filled at a volume ratio of 90 to 70.
이와 같이 구성된 본 발명에 의한 층간단열차음판은 발포성고무덮개(28)로 밀폐되는 발포성고무상자(10)속에 내장된 코어(16)의 격실(14)들 속에 경질우레탄발포체의 분쇄물(20)과 열처리된 다공성질석의 분쇄물(22)이 가압, 충진된 것이어서 경량충격음과 중량충격음의 차단 성능을 향상시켜 주며, 발포성고무상자(10)와 발포성고무덮개(28)가 경질우레탄발포체의 분쇄물(20)과 열처리된 다공성 질석의 분쇄물(22)보다 상대적으로 큰 공극율을 갖는 것이므로 특히 중량충격음의 차단성능을 크게 향상시켜주게 된다.The interlayer insulation sound insulating plate according to the present invention configured as described above is a pulverized product of the hard urethane foam in the compartments 14 of the core 16 embedded in the foam rubber box 10 sealed with the foam rubber cover 28. The pulverized product 22 of the heat treated porous vermiculite is pressurized and filled to improve the blocking performance of the light impact sound and the heavy impact sound, and the foamed rubber box 10 and the foamed rubber cover 28 are pulverized products of the hard urethane foam. It has a relatively large porosity than the pulverized material 22 of the porous vermiculite (20) and the heat treatment, in particular, greatly improves the blocking performance of the heavy impact sound.
그리고 코어(16)의 격벽(12)들은 상기 경질우레탄발포체의 분쇄물(20)과 열처리된 다공성질석의 분쇄물(22)의 혼합물(24)이 갖는 부족한 강도를 보완해주고, 균열이 발생하게 되더라고 균열이 확산되는 것을 방지해 주어서 강도와 내구성을 크게 향상시켜주게 된다.The partitions 12 of the core 16 compensate for the insufficient strength of the mixture 24 of the pulverized material 20 of the hard urethane foam and the pulverized material 22 of the heat treated porous vermiculite, and cracks are generated. This prevents cracks from spreading, greatly improving strength and durability.
또 코어(16)의 격벽(12)들이 기둥역할을 수행하는 것이어서 차음성 저하와 제조비용을 상승시켜주는 고가의 정착제를 소량사용하면서도 제조할 수 있는 것이므로 저렴한 비용으로 제조할 수 있게 된다.In addition, since the partition walls 12 of the core 16 perform the role of pillars, they can be manufactured at a low cost because a small amount of expensive fixing agent that lowers sound insulation and increases manufacturing cost can be manufactured.
도 4에는 본 발명에 의한 층간단열차음판을 이용한 바닥시공상태가 예시되어 있다.Figure 4 illustrates the floor construction state using the interlayer insulation sound insulating plate according to the present invention.
본 발명에 의한 바닥시공방법은 건축물의 기초면위에 완충재인 발포성 고무패드와 층간단열차음판을 설치하고 그 상측에 온수관을 설치한 후 시멘트몰탈층을 시공함에 있어서, 발포성고무상자(10)속에 고정되어 있으며 여러개의 격벽(12)과 격실(14)을 가진 코어(16)의 격실(14)들 속에 경질우레탄발포체의 분쇄물(20)과 열처리된 다공성질석의 분쇄물(22)의 혼합물(24)이 가압, 충진되어 있고, 발포성고무덮개(28)로 상기 발포성고무상자(10)가 밀폐되어 있는 층간단열차음판(A)을 건축물의 기초면 위에 있는 발포성고무패드(29)위에 설치하는 단계와;In the floor construction method according to the present invention, the foam rubber pad and the interlayer insulation sound insulating plate which are cushioning materials are installed on the foundation surface of the building, and the hot water pipe is installed on the upper side thereof. A mixture of the pulverized material 20 of the hard urethane foam and the pulverized material 22 of the heat-treated porous vermiculite in the compartments 14 of the core 16 fixed and having a plurality of partitions 12 and 14. 24 is pressurized and filled, and the foamed rubber cover 28 is installed on the foamed rubber pad 29 on the foundation surface of the building, in which the interlayer insulation sound insulation board A in which the foamed rubber box 10 is sealed is installed. Steps;
상기 층간단열차음판(A)들 사이에 수평날개(30)와 수직날개(32)를 가지며 발포성고무로 된 연결부재(34)를 접착시켜서 층간단열차음판(A)들을 서로 연결되게 설치하는 단계와;Installing the interlayer insulation sound insulating plates (A) to be connected to each other by adhering the connection member 34 made of foam rubber having a horizontal wing 30 and a vertical wing 32 between the interlayer insulation sound insulation plates (A). Wow;
밴딩부(37)로 부터 연장된 2개의 자유단부(38)에 가시형후크(40)를 가진 고정부재(42)를 상기 층간단열차음판(A)위에 배관되는 온수관(36)의 위쪽에서 상기 층간단열차음판(A)쪽으로 눌러끼워서 온수관(36)을 고정하는 단계와;In the upper part of the hot water pipe 36 piped on the interlayer insulation sound insulating plate A, a fixing member 42 having a visible hook 40 at two free ends 38 extending from the bending part 37 is piped. Fixing the hot water pipe (36) by pressing it toward the interlayer insulation sound insulating plate (A);
상기 온수관(36)이 설치된 층간단열차음판(A)의 상측에 시멘트몰탈층(44)을 타설하여 양생시키는 단계를 포함하여서 된 것이다.And pouring the cement mortar layer 44 on the upper side of the interlayer insulation sound insulating plate A on which the hot water pipe 36 is installed.
도면중 미설명부호 46은 측벽단열 및 차음용 발포성고무판이다.Reference numeral 46 in the drawings is a foam rubber plate for sidewall insulation and sound insulation.
이와 같이 시공된 바닥에 적용된 본 발명에 의한 층간단열차음판자체(A)가 경질우레탄발포체의 분쇄물과 일반시멘트와의 반죽물을 압축, 건조시켜 만든 종래 것보다 우수한 차음효과를 발휘하는 것일 뿐만 아니라 수평날개(30)와 수직날개(32 ) 가짐으로써 "T"자형으로 되어 있으며 접착되는 발초성고무로 된 연결부재(34)로 층간단열차음판(A)들 사이가 밀폐된 것이어서 보다 우수한 차음효과를 발휘하게 된다.Thus, the interlayer insulation sound insulation board itself according to the present invention applied to the floor thus constructed has excellent sound insulation effect than the conventional one made by compressing and drying the pulverized product of the hard urethane foam and the general cement. Rather than having a horizontal wing 30 and a vertical wing (32) has a "T" shape and is bonded between the insulating member of the insulating rubber between the interlayer insulation sound insulating plate (A) is better sound insulation Will be effective.
그리고 층간단열차음판(A)쪽으로 이탈되지 않도록 박혀지는 가시형후크(40)를 자유단부(38)에 가진 고정부재(42)는 층간단열차음판(A)위에 배관되는 온수관(3 6)을 견고하게 고정시켜주는 것이어서 후공정인 시멘트몰탈층(44)을 타설작업할때 온수관(36)의 배관된 상태가 흐트러지지 않도록 유지시켜주게 된다.In addition, the fixing member 42 having the visible end hook 40 formed at the free end 38 so as not to be separated toward the interlayer insulation sound insulating plate A is a hot water pipe 36 which is piped on the interlayer insulation sound insulation plate A. It is to fix the firmly so as to maintain the piped state of the hot water pipe 36 is not disturbed when pouring the cement mortar layer 44 which is a post-process.
도 1은 본 발명에 의한 층간단열차음판의 일부를 절개하여 내부구조를 보인 평면도.1 is a plan view showing an internal structure by cutting a part of the interlayer insulation sound insulating plate according to the present invention.
도 2는 도 1에 I - I 선 확대단면도.2 is an enlarged sectional view taken along line II of FIG. 1.
도 3은 본 발명에 의한 층간단열차음판의 실시예를 보인 확대종단면도.Figure 3 is an enlarged longitudinal sectional view showing an embodiment of the interlayer insulation sound insulating plate according to the present invention.
도 4는 도 1에 층간단열차음판을 이용한 바닥의 시공된 상태를 보인 종단면도.Figure 4 is a longitudinal cross-sectional view showing the construction of the floor using the interlayer insulation sound insulating plate in FIG.

Claims (3)

  1. 삭제delete
  2. 삭제delete
  3. 건축물의 기초면위에 완충재인 발포성고무패드와 층간단열차음판을 설치하고 그 상측에 온수관을 설치한 후 시멘트몰탈층을 시공하는 바닥시공방법에 있어서, 발포성고무상자(10)속에 고정되어 있으며 여러개의 격벽(12)과 격실(14)을 가진 코어(16)의 격실(14)들 속에 경질우레탄발포체의 분쇄물(20)과 열처리된 다공성질석의 분쇄물(22)의 혼합물(24)이 가압, 충전되어 있고 발포성고무덮개(28)로 상기 발포성고무상자(10)가 밀폐되어 있는 층간단열차음판(A)을 건축물의 기초면위에 있는 발포성고무패드(29)위에 설치하는 단계와;In the floor construction method of installing cement foam mortar layer after installing foam rubber pad and interlayer insulation sound insulation board which is cushioning material on the foundation surface of building, and installing hot water pipe on the upper side, it is fixed in foam rubber box 10 and several In the compartments 14 of the core 16 having the partitions 12 and 14 therein, a mixture 24 of the pulverized product 20 of the hard urethane foam and the pulverized product 22 of the heat-treated porous vermiculite is pressurized. Installing an interlayer insulation sound insulating board (A) filled with the foamed rubber cover (28) with the foamed rubber cover (28) on the foamed rubber pad (29) on the foundation surface of the building;
    수평날개(30)와 수직날개(32)를 가지며 발포성고무로 된 연결부재(34)를 상기 층간단열차음판(A)들 사이에 접착시켜서 층간단열차음판(A)들을 서로 연결되게 설치하는 단계와;A step of installing the interlayer insulation sound insulating plate (A) to be connected to each other by adhering the connecting member 34 made of a foam rubber having a horizontal wing 30 and a vertical wing (32) between the interlayer insulation sound insulation board (A) Wow;
    밴딩부(37)로 부터 연장된 2개의 자유단부(38)에 가시형후크(40)를 가진 고정부재(42)로 상기 층간단열차음판(A)위에 배관되는 온수관(36)을 고정하는 단계와;Fixing the hot water pipe 36 piped on the interlayer insulation sound insulating plate (A) by a fixing member 42 having a visible hook 40 to the two free ends 38 extending from the bending portion 37 Steps;
    상기 온수관(36)이 설치된 층간단열차음판(A)의 상측에 시멘트몰탈층(44)을 타설하여 양생시키는 단계를 포함하는 것을 특징으로 하는 공동주택의 바닥시공방법.Placing a cement mortar layer 44 on the upper side of the inter-layer insulation sound insulating plate (A) in which the hot water pipe (36) is installed, the floor construction method of the apartment house.
KR1020070095007A 2007-09-19 2007-09-19 Inter-floor insulating board for apartment house and floor construction method using thereof KR100898309B1 (en)

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KR20060064526A (en) * 2004-12-08 2006-06-13 학교법인 포항공과대학교 Composite sandwich-structures for vibration, impact and noise reduction

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