JP5332177B2 - Laminated board - Google Patents

Laminated board Download PDF

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JP5332177B2
JP5332177B2 JP2007284346A JP2007284346A JP5332177B2 JP 5332177 B2 JP5332177 B2 JP 5332177B2 JP 2007284346 A JP2007284346 A JP 2007284346A JP 2007284346 A JP2007284346 A JP 2007284346A JP 5332177 B2 JP5332177 B2 JP 5332177B2
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fiber reinforced
laminated board
reinforced mortar
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JP2009108647A (en
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康夫 渡辺
佳久 村田
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Bild Land Co Ltd
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Description

本発明は、積層ボードに関する。   The present invention relates to a laminated board.

セメント系混合物であるコンクリートやモルタルは耐久性に優れ、各種の構造物に用いられ、トンネル，水路や地下貯水槽などにおいても、コンクリート構造物が用いられている。そして、そのコンクリート表面にボードなどを設けることが知られており、そのボードには各種材質のものが用いられる。   Concrete or mortar, which is a cement-based mixture, has excellent durability and is used in various structures. Concrete structures are also used in tunnels, waterways, underground water tanks, and the like. And it is known to provide a board etc. on the concrete surface, and the board is made of various materials.

例えば、短繊維を混入することにより引張強度や伸び能力を向上し、曲げじん性に優れた短繊維補強モルタル（例えば、特許文献１）をコンクリート構造物の表面に設けることが考えられる。   For example, it is conceivable to provide a short fiber reinforced mortar (for example, Patent Document 1) that improves tensile strength and elongation ability by mixing short fibers and has excellent bending toughness on the surface of a concrete structure.

ところで、コンクリートはひび割れが発生すると急激にその耐力を失う脆性的な材料であることが従来から知られており、このため、通常、コンクリート部材の内部には、ひび割れ後の急激な耐力の低下を緩和するために補強鉄筋が設けられている。このため、従来のコンクリート構造体は重量が増し、部材の厚さも嵩むため軽量化が難しいと云う問題があり、これに対して、セメント粒子、シリカ等の微粒子、スラグやフライアッシュなどの無機粒子の比表面積および配合量を各々特定範囲に調整し、これに有機繊維ないし炭素繊維を配合させた超高強度繊維補強モルタルが最近提案されている（特許文献２及び特許文献３）。このモルタルによって製造したものは高強度で靱性が高く、また流動性にも優れる利点を有し、公知ではないが、これをコンクリートの表面に設けるボードに用いることが考えられる。
特開平１０−２８６８２１号公報 特開２００２−３４８１６６号公報 特開２００５−２３６１３号公報 By the way, it has been conventionally known that concrete is a brittle material that loses its yield strength suddenly when cracks occur. For this reason, there is usually a sudden decrease in yield strength after cracks in concrete members. Reinforcing bars are provided for relaxation. For this reason, the conventional concrete structure has a problem that it is difficult to reduce the weight because the weight is increased and the thickness of the member is increased. On the other hand, cement particles, fine particles such as silica, inorganic particles such as slag and fly ash Recently, ultra-high-strength fiber reinforced mortars in which the specific surface area and blending amount are adjusted to a specific range and organic fibers or carbon fibers are blended therein have been proposed (Patent Documents 2 and 3). The mortar produced has the advantage of high strength, high toughness and excellent fluidity, and although not known, it can be used for a board provided on the surface of concrete.
Japanese Patent Laid-Open No. 10-286821 JP 2002-348166 A JP 2005-23613 A

上記短繊維補強モルタルなどのじん性モルタルを、ボードとして使用した場合、その曲げじん性により曲面への対応が可能となるが、反面、そのボードは柔らかく強度に劣る面があり、また、平滑面が得られにくいから、水路などに用いると、抵抗が大きくなる欠点がある。   When a tough mortar such as the above short fiber reinforced mortar is used as a board, it can be used for curved surfaces due to its bending toughness, but on the other hand, the board is soft and inferior in strength, and has a smooth surface. Is difficult to obtain, and when used in waterways, there is a drawback that the resistance increases.

一方、上記超高強度繊維補強セメントでは、平滑性と強度を得ることができるが、曲面への対応が難しく、曲面に対応するには、その都度、曲面に合わせた曲面型枠を作成しなければならず、コスト上昇を招く問題がある。   On the other hand, with the above ultra-high strength fiber reinforced cement, smoothness and strength can be obtained, but it is difficult to cope with curved surfaces, and in order to cope with curved surfaces, a curved formwork that matches the curved surface must be created each time. In other words, there is a problem that increases costs.

そこで、本発明は、表面の強度と平滑面を確保し、かつじん性を備えた積層ボードを提供することを目的とする。   Accordingly, an object of the present invention is to provide a laminated board that ensures the strength and smoothness of the surface and has toughness.

請求項１の発明は、じん性を備えた短繊維強化モルタルからなる裏面側層と、前記裏面側層より高強度を有する超高強度繊維強化モルタルからなる表面層と、前記裏面側層と前記表面層との間に配設される中間骨材と、前記裏面側層の上面に配設される裏面側骨材と、を備えるものである。 The invention of claim 1 includes a back side layer made of short fiber reinforced mortar having toughness, a surface layer made of ultra high strength fiber reinforced mortar having higher strength than the back side layer, the back side layer and the An intermediate aggregate disposed between the surface layer and a back-side aggregate disposed on the upper surface of the back-side layer .

また、請求項２の発明は、前記表面層に目地を設けたものである。 The invention according to claim 2 provides joints in the surface layer.

また、請求項３の発明は、裏面に凹凸を有するものである。 Moreover, invention of Claim 3 has an unevenness | corrugation in a back surface.

請求項１の構成によれば、積層ボードには、じん性を備えた裏面側層によりじん性が得られ、硬質な表面層により強度及び所定の機能が得られる。   According to the structure of Claim 1, toughness is acquired by the back surface side layer provided with toughness, and intensity | strength and a predetermined function are acquired by the hard surface layer.

また、請求項１の構成によれば、積層ボードには、じん性を備えた短繊維強化モルタル層によりじん性が得られ、硬質な表面層により強度及び所定の機能が得られる。 Moreover, according to the structure of Claim 1 , toughness is acquired by the short fiber reinforced mortar layer provided with the toughness in the laminated board, and strength and a predetermined function are obtained by the hard surface layer.

また、請求項２の構成によれば、目地により硬質な表面層を屈曲することができる。 Moreover, according to the structure of Claim 2, a hard surface layer can be bent by a joint.

また、請求項１の構成によれば、強度と平滑性を得ることができる。 Moreover, according to the structure of Claim 1 , intensity | strength and smoothness can be obtained.

また、本発明の構成によれば、連結材により表面層と裏面側層との密着性を向上することができる。 Moreover, according to the structure of this invention, the adhesiveness of a surface layer and a back surface side layer can be improved with a connection material.

また、請求項３の構成によれば、コンクリート構造物の表面と積層ボードとの密着性を向上することができる。 Moreover, according to the structure of Claim 3 , the adhesiveness of the surface of a concrete structure and a laminated board can be improved.

本発明における好適な実施の形態について、添付図面を参照しながら詳細に説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。各実施例では、従来とは異なる新規な積層ボードを採用することにより、従来にない積層ボードが得られ、その積層ボードについて記述する。   Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new laminated board different from the conventional one, an unprecedented laminated board is obtained, and the laminated board will be described.

以下、本発明の実施例を添付図面を参照して説明する。図１〜図４は本発明の実施例１を示し、同図は、積層ボード１は、裏面に設けるじん性を備えた裏面側層たる短繊維強化モルタル層２と、表面に設けられ前記裏面側層より硬質な表面層である超高強度繊維強化モルタル層３とを積層一体化してなる。   Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show Example 1 of the present invention, in which a laminated board 1 has a short fiber reinforced mortar layer 2 as a back side layer provided with toughness provided on the back side, and the back side provided on the front side. The super high strength fiber reinforced mortar layer 3 which is a harder surface layer than the side layer is laminated and integrated.

前記短繊維強化モルタル層２は、一例として、短繊維を混合してモルタルを練り混ぜ、同繊維を３次元ランダム配置させた短繊維補強モルタルからなり、短繊維は、鋼繊維，ガラス繊維，炭素繊維、あるいはポリエチレン、ポリプロプレン，アラミド繊維などの各種の繊維を用いることができ、短繊維の直径は数μｍ〜数十μｍ 、その長さは数 ｍｍ〜数十ｍｍ程度である。尚、本実施例では、上記モルタルがセメントを含むように、セメント系混合物とはセメントを含む各種の混合物を表す。   For example, the short fiber reinforced mortar layer 2 is composed of short fiber reinforced mortar in which short fibers are mixed and mortar is kneaded, and the fibers are randomly arranged in three dimensions. The short fibers include steel fibers, glass fibers, and carbon. Various fibers such as fibers, polyethylene, polypropylene, and aramid fibers can be used. The diameter of the short fibers is several μm to several tens μm and the length is about several mm to several tens mm. In the present embodiment, the cementitious mixture represents various mixtures containing cement so that the mortar contains cement.

また、この例では、前記表面層として、超高強度繊維強化モルタル層３を用いている。この超高強度繊維強化モルタルとしては、上記従来例で示したように、裏面側層より強度が高いものが用いられ、例えば、有機繊維及び炭素繊維等を含有する水硬性組成物であって、その硬化体の圧縮強度が１５０（Ｎ／ｍｍ2）以上、割裂引張強度が５（Ｎ／ｍｍ2）以上、曲げ強度が１５（Ｎ／ｍｍ2）以上とすることが望ましい。 In this example, an ultrahigh strength fiber reinforced mortar layer 3 is used as the surface layer. As this ultra-high strength fiber reinforced mortar, as shown in the above conventional example, a material having higher strength than the back side layer is used, for example, a hydraulic composition containing organic fibers and carbon fibers, It is desirable that the cured body has a compressive strength of 150 (N / mm 2 ) or higher, a split tensile strength of 5 (N / mm 2 ) or higher, and a bending strength of 15 (N / mm 2 ) or higher.

また、前記超高強度繊維強化モルタル層３には、積層ボード１を曲面に対応して湾曲できるようにするために所定間隔で複数の目地４が設けられている。この例では、積層ボード１の幅方向に間隔を置いて複数の目地４が配置されているから、積層ボード１を幅方向に湾曲させることができる。すなわち、図２（Ｂ）に示すように、表面側を凸に湾曲させると目地４の間隔が広がり、表面側を凹に湾曲させると目地４の間隔が狭まる。   The ultra high strength fiber reinforced mortar layer 3 is provided with a plurality of joints 4 at predetermined intervals so that the laminated board 1 can be bent corresponding to the curved surface. In this example, since the plurality of joints 4 are arranged at intervals in the width direction of the laminated board 1, the laminated board 1 can be curved in the width direction. That is, as shown in FIG. 2B, when the surface side is curved convexly, the interval between the joints 4 is widened, and when the surface side is curved concavely, the interval between the joints 4 is narrowed.

次に、積層ボード１の製造方法の一例について説明する。図４（Ａ）に示すように、型枠11の底板12に、板材などからなる目地形成部材13を配置し、超高強度繊維強化モルタルＡを層状に打設する。図４（Ｂ）に示すように、超高強度繊維強化モルタルＡが硬化する前のその上面に複数の中間骨材５をセットする。この中間骨材５は連結材であって、超高強度繊維強化モルタルＡに一部が埋まり、一部が突出するように配置する。次に、その上から、図４（Ｃ）に示すように、短繊維強化モルタルＢを層状に打設し、短繊維強化モルタルＢの上面を均し、その上面に複数の裏面側骨材６をセットする。この裏面側骨材６は、超高強度繊維強化モルタルＡに一部が埋まり、一部が裏面から露出するように配置する。そして、それらが硬化したら、脱型し、目地形成材13を取り外すことにより、表面層に前記目地４が形成される。尚、この目地４の一部は裏面側層である短繊維強化モルタル層２に達している。また、前記骨材５，６としては、直径が約１０〜１５ｍｍ程度の砕石などが用いられる。そして、中間骨材５は、超高強度繊維強化モルタル層３と短繊維強化モルタル層２とにそれぞれ埋まる。   Next, an example of a method for manufacturing the laminated board 1 will be described. As shown in FIG. 4A, a joint forming member 13 made of a plate material or the like is disposed on the bottom plate 12 of the mold 11, and the ultra high strength fiber reinforced mortar A is placed in a layered manner. As shown in FIG. 4B, a plurality of intermediate aggregates 5 are set on the upper surface of the ultrahigh strength fiber reinforced mortar A before it is cured. The intermediate aggregate 5 is a connecting material, and is arranged so that a part thereof is buried in the ultra high strength fiber reinforced mortar A and a part thereof is projected. Next, as shown in FIG. 4 (C), the short fiber reinforced mortar B is cast in layers, and the upper surface of the short fiber reinforced mortar B is leveled. Set. The back-side aggregate 6 is disposed so that a part thereof is buried in the ultrahigh strength fiber reinforced mortar A and a part thereof is exposed from the back side. And when they harden | cure, it will demold and remove the joint formation material 13, and the said joint 4 will be formed in a surface layer. A part of the joint 4 reaches the short fiber reinforced mortar layer 2 which is a back side layer. As the aggregates 5 and 6, crushed stone having a diameter of about 10 to 15 mm is used. The intermediate aggregate 5 is buried in the ultrahigh strength fiber reinforced mortar layer 3 and the short fiber reinforced mortar layer 2, respectively.

そして、図３に示すように、積層ボード１を型枠として、背面側にコンクリートを打設し、コンクリート構造物21の表面に積層ボード１を一体に設けることができる。そして、この例では、水路などの壁面を構成するコンクリート構造物21の表面に積層ボード１を一体に設ければ、水の抵抗を少なくすることができる。   Then, as shown in FIG. 3, using the laminated board 1 as a mold, concrete can be placed on the back side, and the laminated board 1 can be integrally provided on the surface of the concrete structure 21. In this example, if the laminated board 1 is integrally provided on the surface of the concrete structure 21 that constitutes a wall surface such as a water channel, the resistance of water can be reduced.

このように本実施例では、請求項１に対応して、セメント系混合物からなるじん性を備えた裏面側層たる短繊維強化モルタル層２と、表面に設けられ短繊維強化モルタル層２より高強度を有する超高強度繊維強化モルタル層３とを備えるから、この積層ボード１には、じん性を備えた裏面側層によりじん性が得られ、硬質な表面層により強度及び所定の機能が得られ、じん性と表面の強度とを兼ね備えた積層ボード１が得られる。   Thus, in this example, corresponding to claim 1, the short fiber reinforced mortar layer 2 as a back side layer having a toughness made of a cement-based mixture and the short fiber reinforced mortar layer 2 provided on the surface are higher. Since the super high strength fiber reinforced mortar layer 3 having strength is provided, the laminated board 1 is provided with toughness by the back side layer having toughness, and the hard surface layer has strength and predetermined functions. Thus, a laminated board 1 having both toughness and surface strength can be obtained.

このように本実施例では、請求項１に対応して、裏面側層がじん性を備えた短繊維強化モルタル層２であるから、この積層ボード１には、じん性を備えた短繊維強化モルタル層２によりじん性が得られ、硬質な表面層たる超高強度繊維強化モルタル層３により強度及び所定の機能が得られる。 Thus, in this embodiment, corresponding to claim 1 , since the back side layer is the short fiber reinforced mortar layer 2 having toughness, the laminated board 1 has the short fiber reinforced with toughness. The toughness is obtained by the mortar layer 2, and the strength and predetermined function are obtained by the ultra-high strength fiber reinforced mortar layer 3 which is a hard surface layer.

このように本実施例では、請求項２に対応して、表面層たる超高強度繊維強化モルタル層３に目地４を設けたから、目地４により硬質な表面層を屈曲することができる。 As described above, in this embodiment, the joint 4 is provided in the ultra-high-strength fiber reinforced mortar layer 3 as the surface layer in correspondence with the second aspect , so that the hard surface layer can be bent by the joint 4.

このように本実施例では、請求項１に対応して、表面層が高強度繊維強化モルタルであるから、強度と平滑性を得ることができる。したがって、ボード１の表面が平滑になるため、水路などの壁面に用いた場合、水の抵抗を少なくすることができる。 As described above, in this embodiment, the surface layer is a high-strength fiber reinforced mortar corresponding to the first aspect , so that strength and smoothness can be obtained. Therefore, since the surface of the board 1 becomes smooth, when used on a wall surface such as a water channel, the resistance of water can be reduced.

このように本実施例では、請求項１に対応して、表面層たる超高強度繊維強化モルタル層３と裏面側層たる短繊維強化モルタル層２との間に連結材たる中間骨材５を有するから、超高強度繊維強化モルタル層３と短繊維強化モルタル層２との密着性を向上することができる。 As described above, in this embodiment, in correspondence with claim 1 , the intermediate aggregate 5 serving as the connecting material is provided between the ultra high strength fiber reinforced mortar layer 3 serving as the surface layer and the short fiber reinforced mortar layer 2 serving as the back surface layer. Since it has, the adhesiveness of the ultra high strength fiber reinforced mortar layer 3 and the short fiber reinforced mortar layer 2 can be improved.

このように本実施例では、請求項４に対応して、裏面側骨材６により、裏面に凹凸を有するから、水路の壁などのコンクリート構造物21の表面と積層ボード１との密着性を向上することができる。 Thus, in this embodiment, the back surface side aggregate 6 has irregularities on the back surface corresponding to the fourth aspect , so that the adhesion between the surface of the concrete structure 21 such as the wall of the water channel and the laminated board 1 is improved. Can be improved.

また、実施例上の効果として、表面層と裏面側層との間にそれぞれ埋まるように連結部材とある中間骨材５を配置したから、両者を確実に一体化することができる。   Further, as an effect on the embodiment, since the intermediate aggregate 5 which is the connecting member is disposed so as to be buried between the front surface layer and the back surface side layer, both can be reliably integrated.

図５は本発明の実施例２を示し、上記各実施例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例では、目地４を積層ボード１の長さ方向に間隔を置いて複数設けており、積層ボード１を長さ方向に屈曲することができ、上記実施例１と同様な作用・効果を奏する。   FIG. 5 shows a second embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the joint 4 is the length of the laminated board 1. A plurality of boards are provided at intervals in the vertical direction, the laminated board 1 can be bent in the length direction, and the same actions and effects as in the first embodiment can be obtained.

図６は本発明の実施例３を示し、上記各実施例と同一部分に同一符号を付し、その詳細な説明を省略して詳述すると、この例では、表面層が複数のタイル８からなり、矩形のタイル８の間に前記目地４が設けられている。この場合、タイル８間を離すことにより、目地４が長さ方向と幅方向にそれぞれ設けられている。   FIG. 6 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the surface layer is composed of a plurality of tiles 8. Thus, the joint 4 is provided between the rectangular tiles 8. In this case, the joints 4 are respectively provided in the length direction and the width direction by separating the tiles 8.

このように本実施例では、上記各実施例と同様な作用・効果を奏する。   As described above, in this embodiment, the same operations and effects as the above-described embodiments are obtained.

また、このように本実施例では、請求項５に対応して、前記表面層が複数のタイル８からなり、これらタイル８間に目地４を設けたから、目地４によりタイル８からなる表面層を屈曲することができる。また、目地４が長さ方向と幅方向にそれぞれ設けられているから、積層ボード１を長さ方向と幅方向に曲げることができる。   In this way, in this embodiment, the surface layer is composed of a plurality of tiles 8 and the joints 4 are provided between the tiles 8 in correspondence with the fifth aspect. Can be bent. Moreover, since the joint 4 is provided in the length direction and the width direction, respectively, the laminated board 1 can be bent in the length direction and the width direction.

また、タイル８と裏面側層と密着性を向上するには、表面層を構成するタイル８の裏面に凹凸を設ければよい。   Moreover, what is necessary is just to provide an unevenness | corrugation in the back surface of the tile 8 which comprises a surface layer, in order to improve the adhesiveness between the tile 8 and a back surface side layer.

尚、本発明は、前記実施例に限定されるものではなく、種々の変形実施が可能である。例えば、短繊維補強モルタルとは、短繊維を入れることにより通常のモルタルよりも曲げじん性が向上したものを言う。また、表面層は、タイル以外でも、鉄板などでもよい。また、電荷移動型触媒を備えた積層ボードを駐車場などに用いてもよい。さらに、表面層と裏面側層との間に他の層が介在してもよく、また、裏面側層の裏面に他の層が介在してもよく、これらの場合も目地により、積層ボードが屈曲可能であることが好ましい。   In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, short fiber reinforced mortar refers to a material in which bending toughness is improved as compared with normal mortar by adding short fibers. Further, the surface layer may be an iron plate or the like other than the tile. Further, a laminated board provided with a charge transfer catalyst may be used for a parking lot or the like. Furthermore, another layer may be interposed between the front surface layer and the back surface side layer, and another layer may be interposed on the back surface of the back surface side layer. It is preferably bendable.

本発明の実施例１を示す正面図である。It is a front view which shows Example 1 of this invention. 同上、側面図であり、図２（Ａ）は屈曲前、図２（Ｂ）は屈曲後を示す。FIG. 2A is a side view, FIG. 2A shows before bending, and FIG. 2B shows after bending. 同上、断面図である。It is sectional drawing same as the above. 同上、製造工程の断面図を示す。The cross-sectional view of the manufacturing process is shown above. 本発明の実施例２を示す正面図である。It is a front view which shows Example 2 of this invention. 本発明の実施例３を示す正面図である。It is a front view which shows Example 3 of this invention.

１ 積層ボード
２ 短繊維強化モルタル層（裏面側層）
３ 超高強度繊維強化モルタル層（表面層）
４ 目地
５ 中間骨材
６ 裏面側骨材
８ タイル（表面層）
Ａ 超高強度繊維強化モルタル
Ｂ 短繊維強化モルタル
21 コンクリート構造物 1 Laminated board 2 Short fiber reinforced mortar layer (back side layer)
3 Ultra high strength fiber reinforced mortar layer (surface layer)
4 Joint 5 Intermediate aggregate 6 Back side aggregate 8 Tile (surface layer)
A Ultra high strength fiber reinforced mortar B Short fiber reinforced mortar
21 Concrete structures

Claims (3)

じん性を備えた短繊維強化モルタルからなる裏面側層と、前記裏面側層より高強度を有する超高強度繊維強化モルタルからなる表面層と、前記裏面側層と前記表面層との間に配設される中間骨材と、前記裏面側層の上面に配設される裏面側骨材と、を備えることを特徴とする積層ボード。   A back side layer made of short fiber reinforced mortar with toughness, a surface layer made of ultra high strength fiber reinforced mortar having higher strength than the back side layer, and arranged between the back side layer and the surface layer. A laminated board comprising: an intermediate aggregate provided; and a back-side aggregate disposed on an upper surface of the back-side layer. 前記表面層に目地を設けたことを特徴とする請求項１記載の積層ボード。   The laminated board according to claim 1, wherein joints are provided in the surface layer. 裏面に凹凸を有することを特徴とする請求項１又は２記載の積層ボード。 Laminated board according to claim 1 or 2, characterized in that it has an uneven back surface.
JP2007284346A 2007-10-31 2007-10-31 Laminated board Active JP5332177B2 (en)

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JP3189978B2 (en) * 1991-07-19 2001-07-16 ミサワホーム株式会社 Panel unit with tile
JPH06220937A (en) * 1992-01-13 1994-08-09 Yunibaasu Kk High strength placing form equipped with facing material
JP2001207577A (en) * 2000-01-27 2001-08-03 Taiheiyo Cement Corp Embedded form
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