JP5207758B2 - Honeycomb solid reinforcement - Google Patents
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- JP5207758B2 JP5207758B2 JP2008025926A JP2008025926A JP5207758B2 JP 5207758 B2 JP5207758 B2 JP 5207758B2 JP 2008025926 A JP2008025926 A JP 2008025926A JP 2008025926 A JP2008025926 A JP 2008025926A JP 5207758 B2 JP5207758 B2 JP 5207758B2
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Description
本発明は、板状や網状の高分子材料からなるストリップ材をはちの巣構造にしたハニカム状立体補強材に関する。詳しくは難燃化処理されたハニカム状立体補強材に関する。また、ハニカム状立体補強材に充填材を充填したハニカム構造体を複数層積層して構築するハニカム擁壁に関する。 The present invention relates to a honeycomb three-dimensional reinforcing material having a honeycomb structure made of a strip material made of a plate-like or net-like polymer material. More specifically, the present invention relates to a honeycomb-shaped three-dimensional reinforcing material that has been flame-retardant treated. The present invention also relates to a honeycomb retaining wall constructed by laminating a plurality of honeycomb structures each having a honeycomb-shaped three-dimensional reinforcing material filled with a filler.
以前より板状や網状の高分子材料からなるストリップ材をはちの巣構造にしたハニカム状立体補強材は知られており、このハニカム状立体補強材に充填材（充填材には一般的に土砂や砕石などが用いられる。）を充填したハニカム構造体は（以下、ハニカム状立体補強材に充填材を充填した構造体を「ハニカム構造体」と記す）地盤の補強材、道路の路盤材、歩道の基礎材、仮設道路、擁壁の資材に利用されてきた。 A honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a strip material made of plate-like or net-like polymer material has been known for some time, and this honeycomb-shaped three-dimensional reinforcing material includes a filler (generally used as earth and sand or crushed stone as a filler). Etc.) is used (hereinafter referred to as a “honeycomb structure” as a structure in which a honeycomb-shaped three-dimensional reinforcing material is filled), a ground reinforcing material, a road base material, and a sidewalk. It has been used for foundation materials, temporary roads and retaining walls.
さらに、ハニカム構造体を一定の高さまで複数層積層し擁壁として使用した構造体（以下、「ハニカム擁壁」と記す）もよく知られている（「非特許文献１」の「１１９ページ」）。また、下部のハニカム構造体に対して、その上に載せるハニカム構造体を下部よりも地山側に後退させることにより、階段状にハニカム構造体を形成して階段状の法面を作ることができる。その際、後退幅を調節することにより、構築する法面の勾配を調整することができる。 Further, a structure in which a plurality of honeycomb structures are stacked to a certain height and used as a retaining wall (hereinafter referred to as “honeycomb retaining wall”) is also well known (“page 119” of “Non-Patent Document 1”). ). In addition, by lowering the honeycomb structure placed on the lower honeycomb structure to the natural ground side from the lower part, the honeycomb structure can be formed in a step shape to form a stepped slope. . At that time, the slope of the slope to be constructed can be adjusted by adjusting the receding width.
ハニカム擁壁を構築すると、施工後、ハニカム擁壁の法面部（以下、「ハニカム擁壁法面部」という。）にハニカム状立体補強材の一端が露出する。ハニカム構造体はハニカム状立体補強材に充填材を充填しただけであるため、雨水などにより充填材が流出してハニカム擁壁法面部の表面浸食が起こることが問題となっていた。そのためハニカム擁壁法面部の安定性を高めるために、様々な方策がなされてきた。 When the honeycomb retaining wall is constructed, one end of the honeycomb three-dimensional reinforcing material is exposed to the slope portion of the honeycomb retaining wall (hereinafter referred to as “honeycomb retaining wall slope portion”) after construction. In the honeycomb structure, since the honeycomb-shaped three-dimensional reinforcing material is only filled with the filler, there is a problem in that the filler flows out due to rain water or the like and surface erosion of the honeycomb retaining wall slope portion occurs. Therefore, various measures have been taken to improve the stability of the honeycomb retaining wall slope.
特許文献１ではハニカム擁壁法面部の安定性を高めるために、ハニカム擁壁法面部に植生を行ったり、塗装を行ったり、モルタル吹き付けを行うことを提案している。特許文献１のように植生は人為的に行うこともできるが、何も手を加えなくても時間が経つにつれ自ずとハニカム擁壁法面部は緑化されてくる。このような自然緑化によりハニカム擁壁法面部は安定化され、雨水などによる表面浸食に歯止めがかかる。 Patent Document 1 proposes that vegetation, coating, or mortar spraying is performed on the honeycomb retaining wall slope to enhance the stability of the honeycomb retaining wall slope. Vegetation can be artificially performed as in Patent Document 1, but the honeycomb retaining wall slope becomes green as time goes by without any modification. Such natural greening stabilizes the slope of the honeycomb retaining wall and prevents surface erosion caused by rainwater or the like.
一方、一般的な法面は自然植生が進みすぎると景観を損ねるため、野焼きを行うことがある。この野焼きの火がハニカム擁壁法面部に波及する恐れがあった。さらに一般的な法面と同様に、ハニカム擁壁法面部に対して野焼きが行われる恐れがあった。ハニカム擁壁法面部に露出するハニカム状立体補強材に火がおよぶと、高分子材料からなるハニカム状立体補強材は燃焼し、ハニカム擁壁法面部が安定性を失うという問題が発生した。 On the other hand, the general slope is sometimes burned because natural vegetation is too advanced to damage the landscape. There was a risk that this open fire would spread to the honeycomb retaining wall slope. Further, as in the case of a general slope, there is a risk that field firing may be performed on the honeycomb retaining wall slope. When the honeycomb-shaped three-dimensional reinforcing material exposed to the honeycomb retaining wall slope portion is ignited, the honeycomb-shaped three-dimensional reinforcement member made of a polymer material burns, and the honeycomb retaining wall slope portion loses stability.
本発明の目的は、野焼きなどの火がハニカム擁壁法面部におよんでも、ハニカム擁壁法面部の安定性を保つことが出来るハニカム状立体補強材を提供することである。 An object of the present invention is to provide a honeycomb-shaped three-dimensional reinforcing material capable of maintaining the stability of a honeycomb retaining wall slope even when a fire such as open burning reaches the honeycomb retaining wall slope.
本発明はこの課題を解決するためになされたものであり、請求項１記載の発明は、
板状または網状の高分子材料からなるストリップ材をはちの巣構造にしたハニカム状立体補強材に充填材を充填したハニカム構造体を複数層積層して構築するハニカム擁壁に用いられるハニカム状立体補強材であって、
少なくとも当該ストリップ材のうちハニカム擁壁の法面部を構成する法面部ストリップ材が難燃化処理されている難燃ストリップ材であるハニカム状立体補強材である。
The present invention has been made to solve this problem, and the invention according to claim 1
A honeycomb-shaped three-dimensional reinforcing material used for a honeycomb retaining wall constructed by stacking a plurality of honeycomb structures filled with a filler in a honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a strip material made of a plate-like or net-like polymer material Because
At least one of the strip materials is a honeycomb three-dimensional reinforcing material which is a flame retardant strip material in which a slope surface strip material constituting a slope surface portion of a honeycomb retaining wall is subjected to a flame retardant treatment.
請求項２記載の発明は、前記難燃ストリップ材が難燃剤を含有する樹脂組成物からなる難燃ストリップ材である請求項１記載のハニカム状立体補強材である請求項１記載のハニカム状立体補強材である。 The invention according to claim 2 is the honeycomb-shaped three-dimensional reinforcing material according to claim 1, wherein the flame-retardant strip material is a flame-retardant strip material made of a resin composition containing a flame retardant. It is a reinforcing material.
請求項３記載の発明は、前記難燃剤が、無機系難燃剤、ハロゲン系難燃剤、リン系難燃剤、メラミン系難燃剤のいずれかである請求項２に記載のハニカム状立体補強材である。
The invention according to claim 3 is the honeycomb-like three-dimensional reinforcing material according to claim 2, wherein the flame retardant is any one of an inorganic flame retardant, a halogen flame retardant, a phosphorus flame retardant, and a melamine flame retardant. .
請求項４記載の発明は、請求項１から３のいずれかに記載のハニカム状立体補強材に充填材を充填したハニカム構造体を複数層積層して構築したハニカム擁壁である。 A fourth aspect of the present invention is a honeycomb retaining wall constructed by laminating a plurality of honeycomb structures each of which is filled with the filler in the honeycomb-like three-dimensional reinforcing material according to any one of the first to third aspects .
本発明による、少なくとも施工後に空気中に露出する部分のストリップ材が難燃化処理されている難燃ストリップ材から構成されるハニカム状立体補強材を利用することで、野焼きなどの火がおよんでも崩壊しないハニカム構造体を構築することができる。 By utilizing a honeycomb-shaped three-dimensional reinforcing material composed of a flame retardant strip material in which at least a portion of the strip material exposed to the air after construction is subjected to a flame retardant treatment according to the present invention, even if a fire such as open burning spreads. A honeycomb structure that does not collapse can be constructed.
また本発明によるハニカム状立体補強材を利用することで、野焼きや火事に強い安定性の高いハニカム擁壁を構築することができる。 In addition, by using the honeycomb-shaped three-dimensional reinforcing material according to the present invention, a highly stable honeycomb retaining wall resistant to open burning and fire can be constructed.
本発明は、板状または網状の高分子材料からなるストリップ材２をはちの巣構造にしたハニカム状立体補強材１において、少なくとも前記ストリップ材のうち施工後に空気中に露出する部分のストリップ材（法面部ストリップ材６）が難燃化処理されている難燃ストリップ材であるハニカム状立体補強材であることを特徴とする。 The present invention relates to a honeycomb solid reinforcing material 1 having a honeycomb structure made of a strip material 2 made of a plate-like or net-like polymer material, and at least a portion of the strip material exposed to the air after construction (slope portion). The strip material 6) is a honeycomb three-dimensional reinforcing material which is a flame retardant strip material which has been subjected to a flame retardant treatment.
図１は、この発明のハニカム状立体補強材１の展張前の斜視図である。ハニカム状立体補強材１は、複数枚の高密度ポリエチレンのストリップ材２を一定間隔の結合部位４にて結合したものである。このハニカム状立体補強材１は展張方向５に展張してハニカム状のセル構造を形成する。ハニカム状立体補強材１のストリップ材には排水性を向上させるために孔３が設けられている。 FIG. 1 is a perspective view of a honeycomb-shaped three-dimensional reinforcing material 1 according to the present invention before expansion. The honeycomb three-dimensional reinforcing material 1 is obtained by bonding a plurality of high-density polyethylene strip materials 2 at bonding sites 4 at regular intervals. The honeycomb-shaped three-dimensional reinforcing material 1 is stretched in the stretching direction 5 to form a honeycomb-shaped cell structure. The strip material of the honeycomb three-dimensional reinforcing material 1 is provided with holes 3 in order to improve drainage.
図２は、この発明の擁壁に利用するハニカム状立体補強材１のうち、法面を形成する部分である法面部ストリップ材６を除くストリップ材に複数の孔を有するハニカム状立体補強材の展張前の斜視図である。ストリップ材に有する孔の径より粒度の細かい充填材をハニカム状立体補強材に充填し法面部を形成する場合、法面部からの土こぼれを防止するために法面部ストリップ材に孔のないハニカム状立体補強材を用いる。ただし、法面部ストリップ材内側のセルに不織布を張るなどの土こぼれ防止の対策を行えば、法面部ストリップ材に孔のあるハニカム状立体補強材を利用して法面部を形成することもできる。排水のためには法面部ストリップ材に孔があるほうがよい。 FIG. 2 shows a honeycomb-shaped three-dimensional reinforcing material having a plurality of holes in a strip material excluding a slope portion strip material 6 which is a portion forming a slope, of the honeycomb-shaped three-dimensional reinforcing material 1 used for the retaining wall of the present invention. It is a perspective view before extension. When forming a sloped part by filling a honeycomb-shaped three-dimensional reinforcing material with a filler having a particle size smaller than the diameter of the holes in the strip material, in order to prevent spilling from the sloped part, the honeycomb part without pores in the sloped part strip material Three-dimensional reinforcing material is used. However, if measures are taken to prevent spillage, such as applying a nonwoven fabric to the cells inside the slope strip material, the slope portion can be formed using a honeycomb-shaped three-dimensional reinforcing material having holes in the slope strip material. For drainage, it is better to have a hole in the slope strip material.
図３は、図２で示したハニカム状立体補強材を展張した際の斜視図である。ハニカム状立体補強材１を展張すると、ハニカム状のセル７が形成される。セル７内に充填材８を充填して締め固めを行うことにより、剛性のあるハニカム構造体を形成させる。 FIG. 3 is a perspective view when the honeycomb-shaped three-dimensional reinforcing material shown in FIG. 2 is stretched. When the honeycomb-shaped three-dimensional reinforcing material 1 is stretched, honeycomb-shaped cells 7 are formed. By filling the cells 7 with the filler 8 and compacting, a rigid honeycomb structure is formed.
図４はハニカム構造体９を積み上げた際の斜視図である。図４のハニカム構造体９を積み重ねて施工することにより、ハニカム擁壁を形成する。積み重ねは法面側のハニカム構造体端部を積み重ねるたびに各層ごと後退させることによりステップを形成し、その後退の度合いに応じて様々な法面勾配を形成することができる。 FIG. 4 is a perspective view when the honeycomb structures 9 are stacked. A honeycomb retaining wall is formed by stacking and constructing the honeycomb structure 9 of FIG. In the stacking, the step is formed by retreating each layer each time the end of the honeycomb structure on the slope side is stacked, and various slopes can be formed according to the degree of the retreat.
図５はハニカム構造体９を積み上げて構築したハニカム擁壁の法面部（ハニカム擁壁法面部）が植生した状況を示した斜視図である。ハニカム擁壁法面部の各ステップには、種を蒔くなどして意図的に植生することもあるが、放っておいても自然に植生される。 FIG. 5 is a perspective view showing a state in which the slope portion (honeycomb retaining wall slope portion) of the honeycomb retaining wall constructed by stacking the honeycomb structures 9 is vegetated. At each step of the honeycomb retaining wall slope, vegetation may be intentionally sown by seeding or the like, but it is naturally vegetated even if left alone.
一方、一般的な法面は自然植生が進みすぎると景観を損ねるため、野焼きを行うことがある。この野焼きの火がハニカム擁壁法面部に波及する恐れがあった。さらに一般的な法面と同様に、ハニカム擁壁法面部に対して野焼きが行われる恐れがあった。また道路の下などに施工されたハニカム擁壁には、通行車両の心ない運転者からのタバコの投げ捨てのためにハニカム擁壁法面部に火がつく恐れがある。ハニカム擁壁法面部に露出するハニカム状立体補強材に火がおよぶと、高分子材料からなるハニカム状立体補強材は燃焼し、ハニカム擁壁法面部の安定性を失うという問題が発生した。 On the other hand, the general slope is sometimes burned because natural vegetation is too advanced to damage the landscape. There was a risk that this open fire would spread to the honeycomb retaining wall slope. Further, as in the case of a general slope, there is a risk that field firing may be performed on the honeycomb retaining wall slope. Moreover, the honeycomb retaining wall constructed under the road or the like may ignite the honeycomb retaining wall slope due to the throwing of cigarettes from a driver who does not mind the passing vehicle. When the honeycomb-shaped three-dimensional reinforcing material exposed to the honeycomb retaining wall slope portion is ignited, the honeycomb-shaped three-dimensional reinforcement member made of a polymer material burns, and the problem arises that the stability of the honeycomb retaining wall slope portion is lost.
そのため、施工後に空気中に露出する部分のストリップ材（ハニカム擁壁法面部のストリップ材など）は火に対して強くなければならず、難燃化処理を行う必要がある。 For this reason, the strip material exposed to the air after construction (such as the strip material of the honeycomb retaining wall slope) must be resistant to fire, and it is necessary to perform a flame retardant treatment.
ストリップ材の難燃化処理の方法としては、「ストリップ材の難燃化処理が必要な部分に難燃層を積層する方法」、「ストリップ材自体を難燃材料にて製造する方法」、などがある。 Examples of the flame retardant treatment of the strip material include “a method of laminating a flame retardant layer on a portion of the strip material that requires flame retardant treatment”, “a method of manufacturing the strip material itself with a flame retardant material”, etc. There is.
「ストリップ材の難燃化処理が必要な部分に難燃層を積層する方法」としては、
１）ストリップ材に難燃性コーティング剤を塗布または吹き付ける方法、
２）ストリップ材に難燃性フィルムをラミネート加工して貼り付ける方法、
３）ラミネート押出成形によりストリップ材に難燃層を積層する方法、
が挙げられる。
As a “method of laminating a flame retardant layer on the part of the strip material that requires flame retardant treatment”
1) A method of applying or spraying a flame retardant coating agent to the strip material,
2) A method of laminating a flame retardant film to the strip material and attaching it,
3) A method of laminating a flame retardant layer on a strip material by laminate extrusion molding,
Is mentioned.
また、「ストリップ材自体を難燃材料にて製造する方法」としては、
１）ストリップ材の製造に難燃剤を添加した樹脂組成物を用いる方法、
２）ストリップ材の製造に難燃性樹脂を用いる方法、
３）ストリップ材として金網等の金属を用いる方法、
が挙げられる。
In addition, as a "method of manufacturing the strip material itself with a flame retardant material"
1) A method using a resin composition to which a flame retardant is added in the production of a strip material,
2) A method of using a flame retardant resin in the production of the strip material,
3) A method using a metal such as a wire mesh as the strip material,
Is mentioned.
本発明に利用可能な難燃剤としては、無機系難燃剤、ハロゲン系難燃剤、リン系難燃剤、メラミン系難燃剤などがある。 Examples of the flame retardant that can be used in the present invention include inorganic flame retardants, halogen flame retardants, phosphorus flame retardants, and melamine flame retardants.
無機系難燃剤には、酸化アンチモン、水酸化アルミニウム、水酸化マグネシウム、ホウ酸亜鉛、モリブデン化合物、フェロセン化合物、スズ化合物などがある。 Inorganic flame retardants include antimony oxide, aluminum hydroxide, magnesium hydroxide, zinc borate, molybdenum compounds, ferrocene compounds, tin compounds, and the like.
ハロゲン系難燃剤には、塩素化パラフィン系、塩素化ポリエチレン、塩素化脂環化合物などの塩素系難燃剤、およびテトラブロモビスフェノールＡ、デカブロモジフェニルエーテル、ビス（ペンタブロモフェニル）エタンなどの臭素系難燃剤などがある。 Halogen flame retardants include chlorine flame retardants such as chlorinated paraffin, chlorinated polyethylene and chlorinated alicyclic compounds, and bromine flame retardants such as tetrabromobisphenol A, decabromodiphenyl ether, and bis (pentabromophenyl) ethane. There are flame retardants.
リン系難燃剤には、ポリリン酸アンモニウム、リン酸エステル系、イントメッセント系などがある。 Phosphorus flame retardants include ammonium polyphosphate, phosphate ester, and intomescent.
メラミン系難燃剤には、メラミン、メラミンシアヌレート、メラミンボレート、メラミンホスフェート類、メラミンポリホスフェート類、メラミンピロホスフェート類などがある。 Melamine flame retardants include melamine, melamine cyanurate, melamine borate, melamine phosphates, melamine polyphosphates, melamine pyrophosphates and the like.
本発明に利用する難燃剤を添加した樹脂組成物を製造するには以下のように行う。すなわち、熱可塑性樹脂、難燃剤およびその他添加剤を高速ミキサーあるいはタンブラー等で混合する。前記のように混合された混合物を溶融混練工程に供する。また、常温で液体のものはプレミキシングせずに、押出機のシリンダー中間部より液添装置にて注入してもよい。溶融混練工程は、単軸スクリュ押出機や２軸スクリュ押出機、バンバリーミキサー、ニーダー、高速回転インテンシブミキサーなどを利用する方法があるが、どのような方法で混錬してもよい。混練物の形状は、混練機からの取り出し方により決まり、一般にはホットカットやストランドのコールドカットによる粒状の形状をしたペレットである。 Production of a resin composition to which a flame retardant used in the present invention is added is performed as follows. That is, a thermoplastic resin, a flame retardant, and other additives are mixed with a high-speed mixer or a tumbler. The mixture mixed as described above is subjected to a melt-kneading step. In addition, liquids at room temperature may be injected from a middle part of the cylinder of the extruder by a liquid addition device without being premixed. The melt-kneading step includes a method using a single screw extruder, a twin screw extruder, a Banbury mixer, a kneader, a high-speed rotary intensive mixer, and the like, and any method may be used for kneading. The shape of the kneaded product is determined by how to take out from the kneader, and is generally a pellet having a granular shape by hot cutting or cold cutting of a strand.
前記樹脂組成物を製造する際に添加されるその他添加剤としては、顔料、熱安定剤、光安定剤、可塑剤、滑剤、充填剤などがあり、必要に応じて添加することができる。 Examples of other additives added when producing the resin composition include pigments, heat stabilizers, light stabilizers, plasticizers, lubricants, fillers, and the like, which can be added as necessary.
製造された樹脂組成物のペレットをシート状に成形し、難燃ストリップ材を製造する。前段階で樹脂組成物を製造せずに熱可塑性樹脂、難燃剤およびその他添加剤の混練物から直接ストリップ材を成形することも可能であるが、ストリップ材の品質を安定させるには一旦樹脂組成物のペレットを製造してから、ストリップ材の製造を行った方がよい。 The pellet of the manufactured resin composition is shape | molded in a sheet form, and a flame-retardant strip material is manufactured. Although it is possible to form the strip material directly from the kneaded mixture of thermoplastic resin, flame retardant and other additives without producing the resin composition in the previous stage, once the resin composition is used to stabilize the quality of the strip material It is better to manufacture the strip material after manufacturing the pellets.
ストリップ材の成形には、インフレーション法、カレンダ法、押出法、Ｔ―ダイ法など様々な方法があるが、好適なのはＴ―ダイ法による成形である。Ｔ―ダイ法により得られたストリップ材を複数用い、千鳥状に結合して、図１、図２のようなハニカム状立体補強材を製造する。 There are various methods for forming the strip material, such as an inflation method, a calendering method, an extrusion method, and a T-die method, but the T-die method is preferable. A plurality of strip materials obtained by the T-die method are used and bonded in a staggered manner to produce a honeycomb-shaped three-dimensional reinforcing material as shown in FIGS.
複数のストリップ材を千鳥状に結合する方法としては、接着剤による接着や熱融着、高周波溶着、超音波溶着、縫製などが挙げられるが、ハニカム状立体補強材としての一定の強度が得られればどの方法でも良い。そのなかでも好適なのは超音波溶着である。 Examples of a method for joining a plurality of strip materials in a staggered manner include adhesion by adhesive, heat fusion, high frequency welding, ultrasonic welding, sewing, etc., but a certain strength as a honeycomb three-dimensional reinforcing material can be obtained. Any method is acceptable. Among these, ultrasonic welding is preferable.
ハニカム状立体補強材は、全てを難燃化処理しても良いが、必要に応じて必要部分のみを難燃化処理したほうがよい。例えば、ハニカム擁壁を構築する用途のハニカム状立体補強材では、最終的に法面に露出するのは端部の一本のストリップ材（法面部ストリップ材６）のみであるから、一本のみ難燃化処理を行ってもよい。この場合は、ハニカム状立体補強材の他のストリップ材は難燃剤をふくまないものを成形し、難燃剤を含むストリップ材と共に前記のように結合し、ハニカム状立体補強材を製造する。また成形の過程で、必要に応じて孔３を設けても良い。 The honeycomb-shaped three-dimensional reinforcing material may be all flame-retarded, but it is better to flame-treat only the necessary part as necessary. For example, in a honeycomb-shaped three-dimensional reinforcing material for use in constructing a honeycomb retaining wall, only one strip material (slope portion strip material 6) at the end is finally exposed to the slope, so only one Flame retardant treatment may be performed. In this case, the other strip material of the honeycomb-shaped three-dimensional reinforcing material is formed of a material that does not contain a flame retardant, and is bonded together with the strip material containing the flame retardant as described above to produce a honeycomb-shaped three-dimensional reinforcing material. Moreover, you may provide the hole 3 as needed in the process of shaping | molding.
以下に実施例、比較例を挙げて説明する。
まず、ストリップ材を製造するために樹脂組成物のペレットを製造した。
Examples and comparative examples will be described below.
First, pellets of a resin composition were manufactured to manufacture a strip material.
実施例１の難燃ストリップ材に用いる樹脂組成物の組成は、
ポリエチレン（ＭＦＲ＝０．２０ｇ／１０ｍｉｎ．、密度＝０．９５ｇ／ｃｍ３）４８重量％、水酸化アルミニウム５０質量％およびカーボンブラック２重量％である。
The composition of the resin composition used for the flame retardant strip material of Example 1 is:
Polyethylene (MFR = 0.20 g / 10 min., Density = 0.95 g / cm 3 ) 48% by weight, aluminum hydroxide 50% by weight and carbon black 2% by weight.
実施例２の難燃ストリップ材に用いる樹脂組成物の組成は、
ポリエチレン（ＭＦＲ＝０．２０ｇ／１０ｍｉｎ．、密度＝０．９５ｇ／ｃｍ３）７８重量％、 デカブロモジフェニルエーテル（プラネロンＤＢ−１０２、三井化学ファイン株式会社製）２０質量％およびカーボンブラック２重量％である。
The composition of the resin composition used for the flame retardant strip material of Example 2 is:
Polyethylene (MFR = 0.20 g / 10 min., Density = 0.95 g / cm 3 ) 78 wt%, decabromodiphenyl ether (Planelon DB-102, manufactured by Mitsui Chemicals Fine Co., Ltd.) 20 mass% and carbon black 2 wt% is there.
実施例３の難燃ストリップ材に用いる樹脂組成物の組成は、
ポリエチレン（ＭＦＲ＝０．２０ｇ／１０ｍｉｎ．、密度＝０．９５ｇ／ｃｍ３）７８重量％、リン酸塩系難燃剤（アデカスタブＦＰ−２０００、株式会社ＡＤＥＫＡ製）２０質量％およびカーボンブラック２重量％である。
The composition of the resin composition used for the flame retardant strip material of Example 3 is:
Polyethylene (MFR = 0.20 g / 10 min., Density = 0.95 g / cm 3 ) 78% by weight, phosphate flame retardant (ADK STAB FP-2000, manufactured by ADEKA Corporation) 20% by mass, and carbon black 2% by weight It is.
実施例４の難燃ストリップ材に用いる樹脂組成物の組成は、
ポリエチレン（ＭＦＲ＝０．２０ｇ／１０ｍｉｎ．、密度＝０．９５ｇ／ｃｍ３）４８重量％、メラミンシアヌレート（ＳＴＡＢＩＡＣＥ ＭＣ−５Ｓ、堺化学工業株式会社製）３０質量％およびカーボンブラック２重量％である。
The composition of the resin composition used for the flame retardant strip material of Example 4 is:
48% by weight of polyethylene (MFR = 0.20 g / 10 min., Density = 0.95 g / cm 3 ), 30% by weight of melamine cyanurate (STABIACE MC-5S, manufactured by Sakai Chemical Industry Co., Ltd.) and 2% by weight of carbon black is there.
また、難燃ストリップ材以外のストリップ材である一般ストリップ材の製造に用いる樹脂組成物の組成は、ポリエチレン（ＭＦＲ＝０．２０ｇ／１０ｍｉｎ．、密度＝０．９５ｇ／ｃｍ３）９８重量％、カーボンブラック２重量％の組成である。 The composition of the resin composition used for the production of the general strip material which is a strip material other than the flame retardant strip material is 98% by weight of polyethylene (MFR = 0.20 g / 10 min., Density = 0.95 g / cm 3 ), The composition is 2% by weight of carbon black.
樹脂組成物のペレットの製造は以下の通りである。前述の組成の混合物をヘンシェルミキサーで混合後、二軸スクリュ押出機（３０ｍｍΦ）にて溶融混練を行い、ストランドをコールドカットして樹脂組成物のペレットを得た。 Production of pellets of the resin composition is as follows. The mixture having the above composition was mixed with a Henschel mixer, then melt kneaded with a twin screw extruder (30 mmΦ), and the strand was cold cut to obtain resin composition pellets.
製造された樹脂組成物のペレットを、押出機（６５ｍｍΦ）を用いて、溶融温度２５０℃でＴ―ダイ法でシート状に押し出し、ストリップ材を製造した。製造されたストリップ材は、幅１５０ｍｍ、厚さ１．５ｍｍである。 The pellets of the produced resin composition were extruded into a sheet shape by a T-die method at a melting temperature of 250 ° C. using an extruder (65 mmΦ) to produce a strip material. The manufactured strip material has a width of 150 mm and a thickness of 1.5 mm.
さらに、６枚のストリップ材を一単位として、５００ｍｍおきに千鳥状に超音波溶着し、ハニカム状立体補強材を製造した。実施例１〜４は、難燃ストリップ材１本と一般ストリップ材５本を組み合わせ、難燃ストリップ材が法面部ストリップ材６の位置になるように配置して、超音波溶着してハニカム状立体補強材を製造した。また、比較例１は、一般ストリップ材を６本組み合わせて超音波溶着してハニカム状立体補強材を製造した。 Further, six strip members as a unit were ultrasonically welded in a staggered manner every 500 mm to produce a honeycomb three-dimensional reinforcing material. In Examples 1 to 4, one flame retardant strip material and five general strip materials are combined, arranged so that the flame retardant strip material is positioned at the slope portion strip material 6, and ultrasonically welded to form a honeycomb-shaped solid. A reinforcement was produced. Further, in Comparative Example 1, a honeycomb-shaped three-dimensional reinforcing material was manufactured by ultrasonically welding a combination of six general strip materials.
製造した実施例１〜４、比較例１のハニカム状立体補強材を用いて、各々について図４のようなハニカム擁壁（幅２メートル、高さ２メートル）を構築した。実施例１〜４については、難燃ストリップ材が法面部にくるように施工した。 A honeycomb retaining wall (width 2 meters, height 2 meters) as shown in FIG. 4 was constructed for each of the manufactured honeycomb-shaped three-dimensional reinforcing materials of Examples 1 to 4 and Comparative Example 1. About Examples 1-4, it constructed so that a flame-retardant strip material might come to a slope part.
構築したハニカム擁壁の法面部の各ステップに乾燥した藁をまんべんなく敷き詰め、ハニカム擁壁の一番下のレベルおよび高さ１メートルのレベルにおのおの水平に火をつけた。そしてハニカム擁壁の法面部の状況を観察した。 Dried firewood was spread evenly on each step of the sloped part of the constructed honeycomb retaining wall, and fired horizontally to the lowest level of the honeycomb retaining wall and a level of 1 meter in height. The condition of the slope of the honeycomb retaining wall was observed.
実施例１〜４では、法面部を覆う藁が全て燃えた後、炎は見えなくなり鎮火した。ストリップ材自体に、火による顕著なダメージを確認できなかった。 In Examples 1 to 4, after all the firewood covering the slope portion burned, the flame disappeared and the fire was extinguished. No significant fire damage was observed on the strip material itself.
一方、比較例１では、法面部を覆う藁が燃え広がりながら、法面部を構成するストリップ材に火が燃え移り、ストリップ材自身が燃焼した。鎮火後、法面部を構成するストリップ材はボロボロになり、所々で法面の崩壊が起こった。 On the other hand, in Comparative Example 1, while the soot covering the slope portion spread and spread, fire burned to the strip material constituting the slope portion, and the strip material itself burned. After the fire was extinguished, the strip material composing the slope became tattered, and the slope collapsed in some places.
本発明の少なくともストリップ材の施工後に空気中に露出する部分が難燃化処理されているハニカム状立体補強材を用いることで、野焼きなどが行われる可能性のある場所においてもハニカム擁壁を構築できる。 By using a honeycomb-shaped three-dimensional reinforcing material in which the portion exposed to the air at least after the construction of the strip material of the present invention is subjected to flame retardant treatment, a honeycomb retaining wall is constructed even in a place where there is a possibility of field burning or the like it can.
１ ハニカム状立体補強材
２ ストリップ材
３ 孔
４ 結合部位
５ 展帳方向
６ 法面部ストリップ材
７ セル
８ 充填材
９ ハニカム構造体
１０ 植生
DESCRIPTION OF SYMBOLS 1 Honeycomb-shaped solid reinforcement 2 Strip material 3 Hole 4 Bonding part 5 Extension direction 6 Slope member 7 Cell 8 Filler 9 Honeycomb structure 10 Vegetation
Claims (4)
少なくとも当該ストリップ材のうちハニカム擁壁の法面部を構成する法面部ストリップ材が難燃化処理されている難燃ストリップ材であるハニカム状立体補強材。 A honeycomb-shaped three-dimensional reinforcing material used for a honeycomb retaining wall constructed by stacking a plurality of honeycomb structures filled with a filler in a honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a strip material made of a plate-like or net-like polymer material Because
A honeycomb-shaped three-dimensional reinforcing material, which is a flame retardant strip material in which a slope surface strip material constituting a slope surface portion of a honeycomb retaining wall is flame-retarded among at least the strip material.
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