JPH11247341A - Heat-insulating material combining form - Google Patents
Heat-insulating material combining formInfo
- Publication number
- JPH11247341A JPH11247341A JP4911798A JP4911798A JPH11247341A JP H11247341 A JPH11247341 A JP H11247341A JP 4911798 A JP4911798 A JP 4911798A JP 4911798 A JP4911798 A JP 4911798A JP H11247341 A JPH11247341 A JP H11247341A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- moisture
- insulating material
- layer
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コンクリート構造
物の床スラブや柱や梁や壁などを断熱施工する際に用い
る型枠兼用断熱材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating material which is also used as a formwork when heat-insulating floor slabs, columns, beams, walls and the like of a concrete structure.
【０００２】[0002]
【従来の技術】型枠兼用断熱材としては、その用途か
ら、強度、断熱性、防火性、コンクリートへの接着性、
および、防湿・防水性を満足することが望まれており、
従来、次に示すように、種々のものが提案されている。2. Description of the Related Art As a form and heat insulating material, strength, heat insulating property, fire resistance, adhesiveness to concrete,
And it is desired to satisfy moisture proof and waterproof properties,
Conventionally, various types have been proposed as shown below.
【０００３】Ａ．第１従来例（特開昭６３−１６１２４
１号公報参照） 硬質ウレタンフォーム、フェノールフォーム、イソシア
ヌレートフォーム、エポキシフォーム等の断熱層に、補
強層、防湿層、接着層から成る３層構造の軟質面材、ま
たは、補強層兼用の接着層の１層構造の軟質面材を貼着
して型枠兼用断熱ボードが構成されている。A. First conventional example (Japanese Patent Laid-Open No. 63-124124)
No. 1) A three-layered soft surface material consisting of a heat insulating layer such as a hard urethane foam, a phenol foam, an isocyanurate foam, and an epoxy foam, a reinforcing layer, a moisture-proof layer, and an adhesive layer, or an adhesive layer also serving as a reinforcing layer. The single-layered soft surface material is adhered to form a formwork / heat insulating board.
【０００４】Ｂ．第２従来例（特開平４−１８５８３３
号公報参照） けい酸カルシウム水和物（鉱物名をゾノトライトとい
う）を主成分とし、ガラス繊維を混入して成形したセラ
ミック質の均質単層板により、比重が約 0.5の断熱捨て
型枠用堰板が構成されている。B. Second conventional example (JP-A-4-185833)
No. 2) A ceramic single-layer plate made mainly of calcium silicate hydrate (mineral name: zonotorite) and mixed with glass fiber, and has a specific gravity of about 0.5. A plate is configured.
【０００５】Ｃ．第３従来例（特公昭５６−３１４２６
号公報参照） 所定間隔を隔てて外側型枠と内側型枠とを設置し、その
内側型枠の枠内に、予めはっ水処理を施したけい酸カル
シウム板等の無機質の断熱部材を接合して配置し、その
断熱部材と外側型枠との間にコンクリートを打設して固
化させ、しかる後に型枠を取り外すことにより、コンク
リートと断熱部材とを一体化するように構成されてい
る。C. Third conventional example (JP-B-56-31426)
The outer mold and the inner mold are installed at a predetermined interval, and an inorganic heat insulating member such as a calcium silicate plate that has been subjected to a water repellent treatment is joined to the inner mold. The concrete and the heat insulating member are integrated by casting and solidifying concrete between the heat insulating member and the outer formwork, and then removing the formwork.
【０００６】しかしながら、上述のような従来例の場
合、それぞれ次のような欠点があった。 ａ．第１従来例の欠点 高断熱性、低吸水性等の面から、断熱層として硬質ウレ
タンフォーム、フェノールフォーム、イソシアヌレート
フォーム、エポキシフォームといった有機系断熱材を使
用しているが、これらは有機質系であるために燃えやす
く、施工中の溶接の火花などで火災を起こすことがあ
り、時には有害ガスが発生するなど施工時の安全性に問
題がある。また、施工後も耐熱性に劣るため、加熱され
た場合に材料劣化が生じやすい等の欠点があった。However, in the case of the above-described conventional examples, there are the following disadvantages. a. Disadvantages of the first conventional example From the viewpoint of high heat insulating properties and low water absorption, organic heat insulating materials such as rigid urethane foam, phenol foam, isocyanurate foam, and epoxy foam are used as the heat insulating layer. Therefore, it is easily flammable, and may cause a fire due to welding sparks during construction, and sometimes poses a problem in safety during construction such as generation of harmful gas. Further, even after the application, the heat resistance is poor, so that there is a disadvantage that the material is easily deteriorated when heated.
【０００７】ｂ．第２従来例の欠点 断熱材として無機質系のけい酸カルシウムを用いている
ために、第１従来例のような耐熱性などの問題は無い
が、この断熱材は、強度は高いものの断熱性能が不十分
であり、また、防湿・防水性やコンクリートとの接着性
が低い欠点があった。B. Disadvantages of the second conventional example Since inorganic calcium silicate is used as the heat insulating material, there is no problem such as heat resistance as in the first conventional example, but this heat insulating material has high strength but high heat insulating performance. It is insufficient, and has the disadvantages of low moisture-proof / water-proof properties and low adhesion to concrete.
【０００８】ｃ．第３従来例の欠点 予めはっ水処理を施したけい酸カルシウム板等の無機質
の断熱部材を用いているために、第１従来例のような耐
熱性などの問題を回避でき、かつ、コンクリート打設時
に小口等から水が浸入しても、内部に留めることが無く
て良好に断熱性能を発揮できるが、このものは強度が不
十分であるために型枠と兼用できないものである。ま
た、たとえはっ水処理されていても、この無機質の断熱
部材だけでは、コンクリート打設時（加圧状態）の防水
性が不十分であった。C. Disadvantages of the third conventional example Since an inorganic heat insulating member such as a calcium silicate plate that has been subjected to a water repellent treatment in advance is used, problems such as heat resistance as in the first conventional example can be avoided, and concrete can be avoided. Even if water enters from a small edge or the like at the time of casting, the water does not stay inside and can exhibit good heat insulating performance, but cannot be used also as a mold because of insufficient strength. Further, even if the water-repellent treatment is performed, the inorganic heat insulating member alone is insufficient in waterproofness at the time of placing concrete (pressurized state).
【０００９】また、本発明者等は、上述従来例の欠点を
改善するものとして、下記のものを提案した。 ｄ．第４従来例（特開平９−８８２１４号公報参照） 密度が 0.05g/cm3〜0.20g/cm3 で表面および内部を含む
全体がはっ水性を有するけい酸カルシウム板のコンクリ
ートと接する側の両面に、合成樹脂フィルムよりなる防
湿・防水層を紙よりなる補強層で挟み込んだ３層構造の
面材を一体的に設けてコンクリート打ち込み用型枠兼用
断熱材が構成されている。The present inventors have proposed the following as an improvement over the above-mentioned disadvantages of the prior art. d. Fourth conventional example (see Japanese Patent Application Laid-Open No. 9-88214) The surface of the calcium silicate plate having a density of 0.05 g / cm 3 to 0.20 g / cm 3 and having water repellency including the surface and the inside, which is entirely in contact with the concrete, A heat-insulating material that also serves as a concrete-implanting formwork is integrally provided on both sides with a three-layer face material in which a moisture-proof / water-proof layer made of a synthetic resin film is sandwiched between reinforcing layers made of paper.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、上述第
４従来例においても、コンクリートと接しない側の補強
層に用いられた紙の強度が、水濡れにより低下し、実用
的な補強効果を発揮できない場合があるという問題があ
った。また、コンクリート側の施工金具の取り付け穴か
ら、けい酸カルシウム板の内部に水圧により少量でも水
分が浸入した場合、その水分が施工後に外部へ放湿され
にくく、断熱性能が低下するなど、未だ改善の余地があ
った。However, even in the fourth conventional example, the strength of the paper used for the reinforcing layer on the side not in contact with concrete is reduced due to water wetting, and a practical reinforcing effect cannot be exhibited. There was a problem that sometimes. Also, if even a small amount of water enters the inside of the calcium silicate plate by water pressure from the mounting hole of the metal fittings on the concrete side, it is difficult to release the water to the outside after construction, and the insulation performance is still lower, such as lowering There was room for
【００１１】本発明は、このような事情に鑑みてなされ
たものであって、請求項１に係る発明の型枠兼用断熱材
は、断熱性、防火性、および、防湿・防水性に優れ、更
に、水濡れに起因する強度低下と水分浸入に起因する断
熱性能の低下を良好に回避できるものを提供することを
目的とし、また、請求項２に係る発明の型枠兼用断熱材
は、コンクリートとの接着性を高め、補強層を介して、
防湿・防水層およびけい酸カルシウム板をコンクリート
に良好に一体化できるようにすることを目的とし、ま
た、請求項３に係る発明の型枠兼用断熱材は、コンクリ
ートとの接着性を一層高くできるようにすることを目的
とする。The present invention has been made in view of such circumstances, and the form and heat insulating material of the invention according to claim 1 is excellent in heat insulation, fire resistance, moisture and water resistance, It is still another object of the present invention to provide a heat insulating material that also serves as a formwork of the invention according to claim 2, which can favorably prevent a decrease in strength due to water wetting and a decrease in heat insulating performance due to water intrusion. To improve the adhesion with the reinforcing layer,
An object of the present invention is to enable the moisture-proof / waterproof layer and the calcium silicate plate to be well integrated with concrete, and the formwork heat insulating material according to the third aspect of the present invention can further enhance the adhesion to concrete. The purpose is to be.
【００１２】[0012]
【課題を解決するための手段】請求項１に係る発明の型
枠兼用断熱材は、上述のような目的を達成するために、
密度が0.1g/cm3〜0.3g/cm3のけい酸カルシウム板のコン
クリートと接する側の表面に、補強層および防湿・防水
層を有するコンクリート側面材を一体的に設けるととも
に、コンクリートと接しない側の表面に、無機繊維の織
物よりなる布補強層および透湿性のある透湿防水層を有
する外面側面材を、布補強層側がけい酸カルシウム板と
対向するように一体的に設けて構成する。According to a first aspect of the present invention, there is provided a mold and heat insulating material for achieving the above object.
The surface of the side where the density is in contact with the concrete calcium silicate board of 0.1g / cm 3 ~0.3g / cm 3 , with integrally provided concrete side surface member having a reinforcing layer and moisture proof and waterproof layer, not in contact with the concrete On the side surface, a cloth reinforcing layer made of a woven fabric of inorganic fibers and an outer side material having a moisture-permeable and moisture-permeable waterproof layer are integrally provided so that the cloth reinforcing layer side faces the calcium silicate plate. .
【００１３】また、請求項２に係る発明の型枠兼用断熱
材は、前述のような目的を達成するために、請求項１に
係る発明の型枠兼用断熱材におけるコンクリート側面材
において、少なくともコンクリートと対向する面に補強
層を設けて構成する。[0013] In order to achieve the above-mentioned object, the form and heat insulating material according to the second aspect of the present invention provides at least a concrete side wall material in the form and heat insulating material according to the first aspect of the present invention. And a reinforcing layer is provided on the surface opposite to.
【００１４】また、請求項３に係る発明の型枠兼用断熱
材は、前述のような目的を達成するために、請求項１ま
たは請求項２に係る発明の型枠兼用断熱材におけるけい
酸カルシウム板を、非はっ水性のけい酸カルシウム板で
構成する。According to a third aspect of the present invention, there is provided a heat insulating material which also serves as a mold and a calcium silicate in the heat insulating material which also serves as a mold according to the first or second aspect of the present invention. The board is composed of a non-water repellent calcium silicate board.
【００１５】[0015]
【作用】請求項１に係る発明の型枠兼用断熱材の構成に
よれば、型枠として用いた後にそのまま断熱材として残
すことにより、0.1g/cm3〜0.3g/cm3と低密度で大きな空
隙率を有するけい酸カルシウム板によって断熱効果を発
揮し、コンクリート打設時の側圧による曲げ応力や圧縮
応力、ならびに、仮設補強材支持部の局部圧縮応力に対
して補強することができるとともに、コンクリート側面
材の防湿・防水層によって、コンクリート打設時の水分
やコンクリート側からの湿気の吸収に対して防湿・防水
効果を発揮することができる。また、無機繊維の織物よ
りなる布補強層によって、水濡れによる強度低下を招か
ずにけい酸カルシウム板の型枠としての必要な強度を確
保できる。また、万一、コンクリート側の施工金具の取
り付け穴から、けい酸カルシウム板の内部に水分が浸入
しても、布補強層から透湿防水層を通じて、浸入した水
分を施工後に外部へ放湿できる。SUMMARY OF] According to the configuration of the mold combined heat-insulating material of the invention according to claim 1, by directly leaving as insulation after used as a mold, and 0.1g / cm 3 ~0.3g / cm 3 at low density Calcium silicate plate with large porosity exhibits heat insulation effect, and can be reinforced against bending stress and compressive stress due to lateral pressure during concrete casting, and local compressive stress of temporary reinforcing material support, The moisture-proof / water-proof layer of the concrete side material can exhibit the moisture-proof / water-proof effect against the absorption of moisture during concrete placement and moisture from the concrete side. In addition, the strength required for the formwork of the calcium silicate plate can be ensured by the cloth reinforcing layer made of a woven fabric of inorganic fibers without causing a decrease in strength due to water wetting. Also, even if moisture enters the inside of the calcium silicate plate from the mounting hole of the construction metal fittings on the concrete side, the infiltrated moisture can be released to the outside after construction through the moisture permeable waterproof layer from the cloth reinforcement layer .
【００１６】また、請求項２に係る発明の型枠兼用断熱
材の構成によれば、補強層により、コンクリートとの接
着性を高めることができる。Further, according to the structure of the heat insulating material which also serves as a mold according to the second aspect of the invention, the adhesiveness to concrete can be enhanced by the reinforcing layer.
【００１７】また、請求項３に係る発明の型枠兼用断熱
材の構成によれば、けい酸カルシウム板が非はっ水性の
ために、布補強層や補強層などとの接着力を高めること
ができる。According to the third aspect of the present invention, since the calcium silicate plate is non-water repellent, the adhesive strength with the cloth reinforcing layer or the reinforcing layer is increased. Can be.
【００１８】[0018]
【発明の実施の形態】次に、本発明の実施の形態につ
き、図面を参照して説明する。図１の第１実施例の断面
図に示すように、本発明に係る型枠兼用断熱材１は、非
はっ水性のけい酸カルシウム板２のコンクリート３と接
する側の表面に、補強層４ａおよび防湿・防水層４ｂを
一体化した２層構造のコンクリート側面材４を一体的に
設け、一方、コンクリート３と接しない側の表面に、布
補強層５ａおよび透湿防水層５ｂを一体化した２層構造
の外面側面材５を一体的に設けて構成される。Next, embodiments of the present invention will be described with reference to the drawings. As shown in the cross-sectional view of the first embodiment of FIG. 1, the heat-insulating material for formwork 1 according to the present invention includes a reinforcing layer 4a on the surface of the non-water-repellent calcium silicate plate 2 on the side in contact with the concrete 3. A concrete side member 4 having a two-layer structure in which a moisture-proof / waterproof layer 4b is integrated is provided integrally, while a cloth reinforcement layer 5a and a moisture-permeable waterproof layer 5b are integrated on the surface not in contact with the concrete 3. It is constructed by integrally providing a two-layer outer surface side member 5.
【００１９】けい酸カルシウム板２としては、密度が0.
1g/cm3〜0.3g/cm3となるものを用いる。密度が0.3g/cm3
を超えると、型枠兼用断熱材としての実用的な断熱性能
が得られず、一方、密度が0.1g/cm3未満になると、成形
体の強度が低下し、製造加工時に損傷を生じる虞がある
からである。The calcium silicate plate 2 has a density of 0.
Use one a 1g / cm 3 ~0.3g / cm 3 . 0.3g / cm 3 density
When the density exceeds 0.1 mm / cm 3 , practical heat insulating performance as a mold and heat insulating material cannot be obtained. Because there is.
【００２０】けい酸カルシウム板２としては、はっ水加
工処理したものも使用できるが、はっ水性のものの場
合、施工金具の取り付け穴の穿設や切断加工の際に発生
する研削粉がコンクリート３と接する補強層４ａに付着
したままコンクリートを打設したときに、研削粉がはっ
水性であるために、コンクリート３と補強層４ａとの接
着性を阻害して剥離の原因となりやすく、非はっ水性の
けい酸カルシウム板２を使用するのが好ましい。上述の
ようなけい酸カルシウム板２の製造方法は常法に従えば
良い。As the calcium silicate plate 2, a water-repellent plate can be used. In the case of a water-repellent plate, grinding powder generated at the time of drilling or cutting a mounting hole of a construction metal is used as concrete. When the concrete is poured while being adhered to the reinforcing layer 4a in contact with the concrete 3, the ground powder is water repellent, so that the adhesion between the concrete 3 and the reinforcing layer 4a is hindered, which is likely to cause peeling. It is preferable to use a water-repellent calcium silicate plate 2. The method for producing the calcium silicate plate 2 as described above may be in accordance with a conventional method.
【００２１】けい酸カルシウム板２の両面に一体に設け
られるコンクリート側面材４および外面側面材５は、コ
ンクリート打設時の側圧による断熱材への引張り応力や
圧縮応力ならびに仮設補強材支持部の局部圧縮応力に対
して補強し、けい酸カルシウム板２の型枠としての必要
強度の不足を補うためのものであり、また、コンクリー
ト打設時における水分、施工時の雨水等の吸収によるけ
い酸カルシウム板２の断熱性能の低下を防ぐものであ
る。The concrete side surface member 4 and the outer side surface member 5 provided integrally on both surfaces of the calcium silicate plate 2 are provided with a tensile stress and a compressive stress on the heat insulating material due to the lateral pressure at the time of placing the concrete, and a local portion of the temporary reinforcing material supporting portion. This is to reinforce against the compressive stress and to compensate for the lack of strength required for the formwork of the calcium silicate plate 2. Also, the calcium silicate is absorbed by the moisture at the time of placing concrete and the rainwater at the time of construction. This is to prevent the heat insulation performance of the plate 2 from being lowered.
【００２２】補強層４ａとしては、型枠兼用断熱材とし
ての必要な強度を発現するための補強効果を有し、柔軟
性があり、加工性が良く、コンクリート３との接着性が
良いものであれば良く、例えば、アスベスト紙、炭カル
紙、水酸化アルミニウム紙、珪酸マグネシウム紙、けい
酸カルシウム紙、クラフト紙、ライナー紙、耐水クラフ
ト紙、耐水ライナー紙などの紙（請求項５）や、ポリエ
ステル不織布、ガラス不織布などの不織布を用いること
ができる。なお、製造時の一体化加工で用いる接着剤の
裏抜けを考慮すると、裏抜けを生じない紙の方が好まし
い。また、必要に応じてこれらに難燃処理を施したもの
を用いても良い。The reinforcing layer 4a has a reinforcing effect for exhibiting the necessary strength as a formwork and heat insulating material, is flexible, has good workability, and has good adhesion to the concrete 3. For example, paper such as asbestos paper, charcoal paper, aluminum hydroxide paper, magnesium silicate paper, calcium silicate paper, kraft paper, liner paper, water-resistant kraft paper, and water-resistant liner paper (Claim 5), Nonwoven fabrics such as polyester nonwoven fabric and glass nonwoven fabric can be used. In addition, in consideration of strikethrough of the adhesive used in the integration processing at the time of manufacturing, paper that does not show strikethrough is preferable. If necessary, these may be subjected to a flame retardant treatment.
【００２３】防湿・防水層４ｂとしては、所定の防湿・
防水性能を有し、型枠兼用断熱材の効果を損なわないも
のであれば何でも使用できるが、加工性および耐久性等
の面から、ポリエチレン、ポリエチレンテレフタレー
ト、ポリプロピレン等の非透水性の合成樹脂よりなる薄
層（請求項６）を用いることが好ましい。The moisture-proof / waterproof layer 4b has a predetermined moisture-proof / waterproof layer.
Any material can be used as long as it has waterproof performance and does not impair the effects of the formwork and heat insulating material.However, from the viewpoint of workability and durability, it is better than non-water-permeable synthetic resins such as polyethylene, polyethylene terephthalate, and polypropylene. It is preferable to use a thin layer (claim 6).
【００２４】また、補強層４ａおよび防湿・防水層４ｂ
とコンクリート３との接着性を考慮すると、防湿・防水
層４ｂに用いられる合成樹脂等はコンクリート３との接
着性が低いので、補強層４ａを、コンクリート３との接
着面、すなわち、コンクリート３と対向する面側に設け
るのが好ましい。The reinforcing layer 4a and the moisture / waterproof layer 4b
Considering the adhesiveness between the concrete and the concrete 3, the synthetic resin used for the moisture-proof / waterproof layer 4 b has a low adhesiveness with the concrete 3. It is preferable to provide them on the facing surface side.
【００２５】図１には、コンクリート側面材４として、
補強層４ａと防湿・防水層４ｂとからなる２層構造のも
のを示しているが、例えば、防湿・防水層４ｂを補強層
４ａで挟持した３層構造のものにするなど、補強層４ａ
および防湿・防水層４ｂよりなる多層構造のものに構成
しても良い。但し、その場合でも、コンクリート３と対
向する面側に補強層４ａを設けるのが好ましい。In FIG. 1, as the concrete side material 4,
Although a two-layer structure composed of the reinforcing layer 4a and the moisture-proof / waterproof layer 4b is shown, for example, a three-layer structure in which the moisture-proof / waterproof layer 4b is sandwiched between the reinforcing layers 4a is used.
A multi-layer structure including the moisture-proof / water-proof layer 4b may be used. However, even in that case, it is preferable to provide the reinforcing layer 4a on the surface side facing the concrete 3.
【００２６】一方、コンクリート３と接しない側の外面
側面材５の布補強層５ａとしては、不燃性で水に濡れて
も強度低下が生じにくい、ガラスクロス、炭素繊維のク
ロス、アルミナ繊維のクロス等の無機繊維の織物を用い
る。コストパフォーマンスの点からガラスクロスを用い
る（請求項４）のが実用的で好ましい。On the other hand, the cloth reinforcing layer 5a of the outer side surface member 5 on the side not in contact with the concrete 3 is made of glass cloth, carbon fiber cloth, alumina fiber cloth And the like. It is practical and preferable to use a glass cloth from the viewpoint of cost performance (claim 4).
【００２７】また、布補強層５ａは、補強効果を確実に
得るために、けい酸カルシウム板２に接着剤等により直
接一体化される。何故ならば、コンクリート打設時に型
枠兼用断熱材が室内側に折れ曲がるのを、無機繊維の織
物の拘束力によって防ぎ、高い補強効果を発揮できてい
るが、例えば、透湿防水層５ｂを先にけい酸カルシウム
板２と接するように接着剤等で固定し、その上から無機
繊維の織物よりなる布補強層５ａを一体化すると、上記
無機繊維の織物の拘束力が透湿防水層５ｂにより弱めら
れ、直接けい酸カルシウム板２に伝えることができず、
所望の補強効果が得られないからである。The cloth reinforcing layer 5a is directly integrated with the calcium silicate plate 2 by an adhesive or the like in order to surely obtain the reinforcing effect. The reason is that the form-insulating material is prevented from being bent toward the room side during concrete casting by the binding force of the inorganic fiber woven fabric, and a high reinforcing effect can be exerted. When fixed with an adhesive or the like so as to be in contact with the calcium silicate plate 2 and the cloth reinforcing layer 5a made of an inorganic fiber fabric is integrated therefrom, the binding force of the inorganic fiber fabric is increased by the moisture-permeable waterproof layer 5b. Weakened, unable to pass directly to calcium silicate plate 2,
This is because a desired reinforcing effect cannot be obtained.
【００２８】透湿防水層５ｂとしては、透湿性と、雨水
の浸入を防げる程度の防水性を兼ね備え、本発明の効果
を損なわないものであれば各種のものが使用できるが、
前述したコンクリート側面材４の補強層４ａと同様に、
製造時の加工性が良く、接着剤塗布時の裏抜けが無く、
施工後の仕上げ処理が容易で、しかも、安価で補強効果
に優れるところから、紙を用いる（請求項７）のが好ま
しい。また、必要に応じてこれらに難燃処理、防水（は
っ水）処理、着色等の加工を施したり、これらにナイロ
ン、ＥＶＡ等の透湿性プラスチックフィルムを一体化し
ても良い。As the moisture-permeable waterproof layer 5b, various materials can be used as long as they have both moisture permeability and waterproofness enough to prevent infiltration of rainwater and do not impair the effects of the present invention.
Like the reinforcing layer 4a of the concrete side material 4 described above,
Good workability at the time of manufacture, no strikethrough when applying adhesive,
It is preferable to use paper (claim 7) because the finishing treatment after construction is easy, and it is inexpensive and has an excellent reinforcing effect. If necessary, these may be subjected to processing such as flame retardant treatment, waterproofing (water repellency) treatment, coloring and the like, or a moisture-permeable plastic film such as nylon or EVA may be integrated therewith.
【００２９】図１には、外面側面材５として、無機繊維
の織物より成る布補強層５ａと透湿防水層５ｂとからな
る２層構造のものを示しているが、外面側面材５として
の特性を損なわない範囲で、補強層５ａと透湿防水層５
ｂの一方又は両方を複数重ねた多層構造のものに構成し
ても良い。FIG. 1 shows a two-layer structure composed of a cloth reinforcing layer 5a made of an inorganic fiber fabric and a moisture permeable waterproof layer 5b. As long as the properties are not impaired, the reinforcing layer 5a and the moisture-permeable waterproof layer 5
It may be configured to have a multilayer structure in which one or both of the layers b are overlapped.
【００３０】補強層４ａと防湿・防水層４ｂ、および、
布補強層５ａと透湿防水層５ｂそれぞれは、接着剤によ
り一体化されるが、補強層４ａと防湿・防水層４ｂにつ
いては、加熱により両層を融着して一体化しても良い
し、コーティングやラミネートにより一体化するもので
も良い。A reinforcing layer 4a and a moisture / waterproof layer 4b;
Although the cloth reinforcing layer 5a and the moisture-permeable waterproof layer 5b are integrated by an adhesive, the reinforcing layer 4a and the moisture-proof / waterproof layer 4b may be integrated by fusing both layers by heating. It may be integrated by coating or laminating.
【００３１】本発明の型枠兼用断熱材１の製造方法とし
ては、例えば、非はっ水性のけい酸カルシウム板２に、
シーラー処理を施してなじみやすくした後に接着剤を塗
布し、コンクリート側面材４および外面側面材５を両面
に一体に設ける等の従来の方法がそのまま適用できる。
このとき、小口面からの吸水を防ぐために、必要に応じ
て小口面に防水テープを貼る等の防水処理を施しても良
い。As a method for producing the mold and heat insulating material 1 of the present invention, for example, a non-water repellent calcium silicate plate 2
A conventional method, such as applying an adhesive after applying a sealer treatment to make the concrete easy to apply and providing the concrete side member 4 and the outer side member 5 integrally on both surfaces, can be applied as it is.
At this time, in order to prevent water absorption from the fore face, waterproof processing such as attaching a waterproof tape to the fore face may be performed as necessary.
【００３２】次に、本発明の具体的な実施例につき、図
面を用いて説明する。図１に示すように、密度0.2g/c
m3、厚さ25mmの非はっ水性のけい酸カルシウム板２の両
面に、水ガラスを用いてシーラー処理を施した後、けい
酸カルシウム板２のコンクリート３と接する側の表面
に、補強層４ａとしてのクラフト紙に防湿・防水層４ｂ
としてのポリエチレンを薄くラミネートしたコンクリー
ト側面材４を、ポリエチレン面がけい酸カルシウム板２
側になるようにしてクロロプレンゴム系接着剤（エスダ
イン＃１２７−ＧＨ：積水化学工業株式会社製）により
接着する。Next, specific embodiments of the present invention will be described with reference to the drawings. As shown in Fig. 1, density 0.2g / c
m 3, a non-repellent surfaces of calcium silicate plate 2 aqueous thickness 25 mm, after applying the sealer treatment using water glass, on a surface of the side in contact with the concrete 3 of calcium silicate board 2, the reinforcing layer Moisture / waterproof layer 4b on kraft paper as 4a
Concrete side material 4 thinly laminated with polyethylene as a polyethylene silicate board 2
And a chloroprene rubber-based adhesive (ESDINE # 127-GH: manufactured by Sekisui Chemical Co., Ltd.).
【００３３】次いで、けい酸カルシウム板２のコンクリ
ート３と接しない側の表面に、透湿防水層５ｂとしての
防水加工したクラフト紙に布補強層５ａとしてのガラス
クロスを耐水性の接着剤（エチレン・酢酸ビニル系、Ａ
Ｆ−２２：アイカ工業株式会社製）で接着して一体化し
た外面側面材５を、ガラスクロス面がけい酸カルシウム
板２側になるようにしてクロロプレンゴム系接着剤（エ
スダイン＃１２７−ＧＨ：積水化学工業株式会社製）に
より接着し、型枠兼用断熱材を得た。得られた断熱材の
熱伝導率は0.038kcal/mh℃(at 20℃) であり、45℃で乾
燥した後にコンクリート側面材４側から荷重をかけて測
定した曲げ強さは31kgf/cm2 、水中浸漬24時間後の曲げ
強さは19kgf/cm2 であった。また、防湿・防水性につい
ては、透湿抵抗が56m2・mmHg・ｈ/g、吸水量が5.3g/100
cm2 であり、防火性については、不燃材料（建設省告示
第１８２８号に従う）に該当し、表面に溶接の火花を落
としても延焼しないものであった。したがって、いずれ
の性能においても型枠兼用断熱材として満足できるもの
であった。Next, on the surface of the calcium silicate plate 2 on the side not in contact with the concrete 3, a glass cloth as a cloth reinforcing layer 5a and a water resistant adhesive (ethylene・ Vinyl acetate, A
F-22: a chloroprene rubber-based adhesive (Esdine # 127-GH: (Manufactured by Sekisui Chemical Co., Ltd.) to obtain a heat insulating material that also serves as a mold. The thermal conductivity of the obtained heat insulating material was 0.038 kcal / mh ° C. (at 20 ° C.), the bending strength measured by applying a load from the side of the concrete side wall 4 after drying at 45 ° C. was 31 kgf / cm 2 , The flexural strength after immersion in water for 24 hours was 19 kgf / cm 2 . As for the moisture-proof and waterproof properties, the moisture-permeation resistance is 56 m 2 · mmHg · h / g and the water absorption is 5.3 g / 100.
cm 2 , and corresponded to a noncombustible material (according to the Ministry of Construction Notification No. 1828), and did not spread fire even if sparks of welding were dropped on the surface. Therefore, in any of the performances, the heat insulating material was also satisfactory as a mold frame.
【００３４】各種物性は以下の様な方法で測定した。 （イ）熱伝導率：ＪＩＳ Ａ１４１２の平板比較法に準
拠した。 （ロ）曲げ強さ：ＪＩＳ Ａ９５１０の方法に準拠し
た。 なお、水中浸漬24時間後の曲げ強さは、通常の曲げ強さ
の測定に用いたものと同じサイズ(300×75×25mm) の試
験体を上記型枠兼用断熱材から切り出し、小口面に防水
処理を施し、コンクリートと接しない側の外面側面材５
が水面下50mmになるようにして24時間水中に浸漬した
後、曲げ強さを測定した。 （ハ）吸水量 ：上記型枠兼用断熱材から試験体(100×
100×25mm）を切り出し、小口面に防水処理を施し、コ
ンクリートと接しない側の外面側面材５が水面下50mmに
なるように24時間水中に浸漬して吸水量を測定した。吸
水量(g/100cm2)は次の式より求めた。 （ニ）透湿抵抗：ＪＩＳ Ａ１３２４のカップ法に準拠
した。Various physical properties were measured by the following methods. (A) Thermal conductivity: Based on the flat plate comparison method of JIS A1412. (B) Flexural strength: based on the method of JIS A9510. The bending strength after 24 hours of immersion in water was determined by cutting a test specimen of the same size (300 × 75 × 25 mm) as that used for the measurement of normal bending strength from the above-mentioned insulating material also serving as a formwork, and Outer side material 5 on the side that does not come in contact with concrete
Was immersed in water for 24 hours so as to be 50 mm below the water surface, and then the bending strength was measured. (C) Water absorption: Test piece (100 ×
(100 × 25 mm) was cut out, the edge face was waterproofed, and immersed in water for 24 hours so that the outer side material 5 on the side not in contact with concrete was 50 mm below the water surface, and the water absorption was measured. The water absorption (g / 100 cm 2 ) was determined by the following equation. (D) Moisture permeability resistance: Based on the cup method of JIS A1324.
【００３５】なお、本発明の型枠兼用断熱材は、一般の
ボード状断熱材としても使用可能である。It should be noted that the heat-insulating material that also serves as a mold according to the present invention can be used as a general board-shaped heat-insulating material.
【００３６】[0036]
【発明の効果】以上説明したように、請求項１に係る発
明の型枠兼用断熱材によれば、0.1g/cm3〜0.3g/cm3と低
密度で大きな空隙率を有するけい酸カルシウム板を用い
るから、優れた断熱性能を有し、そのうえ、コンクリー
トと接しない側に布補強層と透湿防水層とを備えて放湿
機能を持たせるから、コンクリート打設時などに施工金
具の取り付け穴等から水が浸入しても、浸入した水分を
施工後に外部へ放湿して内部に水分を留めることを回避
でき、吸水による断熱性能の低下を防ぐことができる。
また、けい酸カルシウム板が無機質材料であるから、施
工中の溶接の火花などで火災を起こしたり、加熱によっ
て材料劣化を生じたり、火災時に有害ガスを発生すると
いったことを回避でき、安全でかつ優れた防火性を有す
る。また、けい酸カルシウム板の両面の一方側に補強層
を、他方側に布補強層を備えるから、けい酸カルシウム
板の型枠としての必要な強度を確保するとともに、コン
クリート打設時の側圧による引っ張り応力や圧縮応力、
ならびに、仮設補強材支持部の局部圧縮応力に対して補
強し、優れた強度を有する。しかも、コンクリートと接
しない側に布補強層を備えるから、従来の紙を用いる場
合に比べ、水濡れによる強度低下を回避でき、所定の補
強効果を確実に発揮させることができる。更に、けい酸
カルシウム板のコンクリート側の面に防湿・防水層を備
えるから、コンクリート打設時の水分やコンクリート側
からの湿気の吸収に対して優れた防湿・防水効果を有
し、断熱性能の低下を防止することができる。また、コ
ンクリートとは反対側に透湿防水層を備えるから、施工
時の雨水に対しても優れた防水効果を有し、断熱性能の
低下を防止することができる。As described in the foregoing, according to the formwork combined heat-insulating material of the invention according to claim 1, calcium silicate having a large void ratio of low density 0.1g / cm 3 ~0.3g / cm 3 Since the board is used, it has excellent heat insulation performance, and furthermore, it has a cloth reinforcing layer and a moisture permeable waterproof layer on the side not in contact with concrete and has a moisture release function, so the construction metal fittings can be used when casting concrete etc. Even if water invades through the mounting holes or the like, it is possible to prevent the infiltrated moisture from being released to the outside after the construction and to keep the moisture inside, and to prevent a decrease in heat insulation performance due to water absorption.
In addition, since the calcium silicate plate is an inorganic material, it is possible to avoid fires due to welding sparks during construction, material deterioration due to heating, and generation of harmful gases at the time of fire. Has excellent fire protection. In addition, since the reinforcing layer is provided on one side on both sides of the calcium silicate plate and the cloth reinforcing layer is provided on the other side, the necessary strength as a formwork of the calcium silicate plate is secured, and the side pressure at the time of concrete casting is used. Tensile stress, compressive stress,
In addition, it is reinforced against the local compressive stress of the temporary reinforcing material supporting portion, and has excellent strength. Moreover, since the cloth reinforcing layer is provided on the side not in contact with the concrete, a decrease in strength due to water wetting can be avoided as compared with the case where conventional paper is used, and a predetermined reinforcing effect can be reliably exhibited. In addition, since the calcium silicate plate is provided with a moisture-proof / water-proof layer on the concrete side, it has excellent moisture-proof / water-proof effect against absorption of moisture during concrete casting and moisture from the concrete side. The drop can be prevented. In addition, since a moisture-permeable waterproof layer is provided on the side opposite to the concrete, it has an excellent waterproof effect against rainwater during construction and can prevent a decrease in heat insulation performance.
【００３７】また、請求項２に係る発明の型枠兼用断熱
材によれば、コンクリートに、補強層を介して防湿・防
水層およびけい酸カルシウム板を一体化するから、防湿
・防水層をコンクリートに接着する場合に比べ、コンク
リートとの接着性が向上して防湿・防水層およびけい酸
カルシウム板を良好にコンクリートと一体化でき、耐久
性を向上できるようになった。According to the second aspect of the present invention, since the moisture-proof / waterproof layer and the calcium silicate plate are integrated with the concrete via the reinforcing layer, the moisture-proof / waterproof layer is formed of concrete. Compared with the case of bonding to concrete, the adhesiveness to concrete is improved, and the moisture-proof / waterproof layer and the calcium silicate plate can be better integrated with concrete, and the durability can be improved.
【００３８】また、請求項３に係る発明の型枠兼用断熱
材の構成によれば、けい酸カルシウム板が非はっ水性で
あるから、例えば、はっ水性のものの場合、施工金具の
取り付け穴の穿設や切断加工の際に発生する研削粉がコ
ンクリートと接する補強層に付着したままコンクリート
を打設したときに、コンクリートと補強層との接着性を
阻害して剥離の原因となりやすいのに比べ、非はっ水性
の研削粉ともども補強層をコンクリートに良好に接着で
き、研削粉を除去する手間を要することも無く、型枠兼
用断熱材をコンクリートに良好に一体化できるようにな
った。According to the construction of the heat insulating material which also serves as a mold according to the third aspect of the present invention, the calcium silicate plate is non-water repellent. When the concrete is poured while grinding powder generated during drilling and cutting of the concrete adheres to the reinforcing layer in contact with the concrete, it hinders the adhesiveness between the concrete and the reinforcing layer and tends to cause peeling. In comparison, the non-water-repellent grinding powder and the reinforcing layer could be adhered to concrete satisfactorily, and the work for removing the grinding powder was not required, and the formwork heat insulating material could be integrated well with the concrete.
【図１】本発明に係る型枠兼用断熱材の実施例を示す断
面図である。FIG. 1 is a cross-sectional view showing an embodiment of a mold and heat insulating material according to the present invention.
１…型枠兼用断熱材 ２…けい酸カルシウム板 ３…コンクリート ４…コンクリート側面材 ４ａ…補強層 ４ｂ…防湿・防水層 ５…外面側面材 ５ａ…布補強層 ５ｂ…透湿防水層 DESCRIPTION OF SYMBOLS 1 ... Insulation material which also serves as a formwork 2 ... Calcium silicate board 3 ... Concrete 4 ... Concrete side material 4a ... Reinforcement layer 4b ... Moisture-proof / waterproof layer 5 ... Exterior surface side material 5a ... Cloth reinforcement layer 5b ... Moisture-permeable waterproof layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉村 武 大阪市中央区本町四丁目１番13号 株式会 社竹中工務店大阪本店内 (72)発明者 柴原 数雄 岐阜県本巣郡穂積町大字野田新田字北沼 4064−１ 日本インシュレーション株式会 社生産事業部中央技術研究所内 (72)発明者 三摩 博将 岐阜県本巣郡穂積町大字野田新田字北沼 4064−１ 日本インシュレーション株式会 社生産事業部中央技術研究所内 (72)発明者 稗田 能久 岐阜県本巣郡穂積町大字野田新田字北沼 4064−１ 日本インシュレーション株式会 社生産事業部中央技術研究所内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Yoshimura 4-1-1-13 Honcho, Chuo-ku, Osaka-shi Inside Takenaka Corporation Osaka Main Store (72) Inventor Kazuo Shibahara Nozomi, Hozumi-cho, Motosu-gun, Gifu Prefecture 4064-1 Nitta Character Kitanuma Nippon Insulation Co., Ltd. Production Engineering Department Central Technology Laboratory (72) Inventor Hiromasa Mima Hoda-cho, Motosu-gun, Gifu Prefecture (72) Inventor: Nohisa Hieda, Hosumi-cho, Motosu-gun, Gifu Prefecture, Japan.
Claims (7)
シウム板のコンクリートと接する側の表面に、補強層お
よび防湿・防水層を有するコンクリート側面材を一体的
に設けるとともに、前記コンクリートと接しない側の表
面に、無機繊維の織物よりなる布補強層および透湿性の
ある透湿防水層を有する外面側面材を、前記布補強層側
が前記けい酸カルシウム板と対向するように一体的に設
けてあることを特徴とする型枠兼用断熱材。To 1. A density of the side in contact with the concrete of 0.1g / cm 3 ~0.3g / cm 3 calcium silicate board surface with integrally provided concrete side surface member having a reinforcing layer and moisture proof and waterproof layer On the surface not in contact with the concrete, an outer side material having a cloth reinforcing layer made of a woven fabric of inorganic fibers and a moisture-permeable and moisture-permeable waterproof layer is provided so that the cloth-reinforcing layer side faces the calcium silicate plate. A heat insulating material which is also provided integrally with the mold.
おいて、少なくともコンクリートと対向する面に補強層
を設けてある型枠兼用断熱材。2. The heat insulating material for a formwork, wherein the concrete side material according to claim 1, wherein a reinforcing layer is provided at least on a surface facing the concrete.
カルシウム板が、非はっ水性のけい酸カルシウム板であ
る型枠兼用断熱材。3. A heat insulating material which also serves as a mold, wherein the calcium silicate plate according to claim 1 or 2 is a non-water repellent calcium silicate plate.
載の無機繊維の織物がガラスクロスである型枠兼用断熱
材。4. A heat-insulating material that also serves as a mold, wherein the woven fabric of inorganic fibers according to claim 1 is a glass cloth.
載のコンクリート側面材の補強層が紙である型枠兼用断
熱材。5. A heat insulating material for a formwork, wherein the reinforcing layer of the side material of the concrete according to claim 1 is paper.
載の防湿・防水層が非透水性の合成樹脂の薄層である型
枠兼用断熱材。6. A heat-insulating material which also serves as a mold, wherein the moisture-proof / water-proof layer according to any one of claims 1 to 5 is a thin layer of a non-water-permeable synthetic resin.
載の透湿防水層が紙である型枠兼用断熱材。7. A heat-insulating material for a formwork, wherein the moisture-permeable waterproof layer according to claim 1 is paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4911798A JPH11247341A (en) | 1998-03-02 | 1998-03-02 | Heat-insulating material combining form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4911798A JPH11247341A (en) | 1998-03-02 | 1998-03-02 | Heat-insulating material combining form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11247341A true JPH11247341A (en) | 1999-09-14 |
Family
ID=12822130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4911798A Pending JPH11247341A (en) | 1998-03-02 | 1998-03-02 | Heat-insulating material combining form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11247341A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019179A (en) * | 2002-06-13 | 2004-01-22 | Torii Toshi Kenchiku Sekkei:Kk | External heat insulation construction method using calcium silicate board |
| JP2010047919A (en) * | 2008-08-19 | 2010-03-04 | Ohbayashi Corp | Substrate sheet member for being stuck on surface of concrete skeleton, method of treating surface of concrete skeleton using the same, and method of manufacturing precast concrete using the same |
| CN102995760A (en) * | 2011-09-10 | 2013-03-27 | 张玉洪 | Modified expandable polystyrene (EPS) insulation material and manufacture process thereof |
-
1998
- 1998-03-02 JP JP4911798A patent/JPH11247341A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019179A (en) * | 2002-06-13 | 2004-01-22 | Torii Toshi Kenchiku Sekkei:Kk | External heat insulation construction method using calcium silicate board |
| JP2010047919A (en) * | 2008-08-19 | 2010-03-04 | Ohbayashi Corp | Substrate sheet member for being stuck on surface of concrete skeleton, method of treating surface of concrete skeleton using the same, and method of manufacturing precast concrete using the same |
| CN102995760A (en) * | 2011-09-10 | 2013-03-27 | 张玉洪 | Modified expandable polystyrene (EPS) insulation material and manufacture process thereof |
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