JP2000054307A - Elastic pavement, elastic pavement face, and execution method thereof - Google Patents

Elastic pavement, elastic pavement face, and execution method thereof

Info

Publication number
JP2000054307A
JP2000054307A JP10219944A JP21994498A JP2000054307A JP 2000054307 A JP2000054307 A JP 2000054307A JP 10219944 A JP10219944 A JP 10219944A JP 21994498 A JP21994498 A JP 21994498A JP 2000054307 A JP2000054307 A JP 2000054307A
Authority
JP
Japan
Prior art keywords
elastic pavement
liquid binder
elastic
chips
urethane prepolymer
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.)
Withdrawn
Application number
JP10219944A
Other languages
Japanese (ja)
Other versions
JP2000054307A5 (en
Inventor
Hiroyuki Katayama
裕之 片山
Hirohide Sakaguchi
博英 坂口
Isamu Suo
勇 周防
Yoshiharu Ishibashi
芳晴 石橋
Kenji Kobayashi
憲司 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOYO SPORTS SHISETSU KK
Mitsui Chemicals Inc
Original Assignee
TOYO SPORTS SHISETSU KK
Mitsui Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TOYO SPORTS SHISETSU KK, Mitsui Chemicals Inc filed Critical TOYO SPORTS SHISETSU KK
Priority to JP10219944A priority Critical patent/JP2000054307A/en
Publication of JP2000054307A publication Critical patent/JP2000054307A/en
Publication of JP2000054307A5 publication Critical patent/JP2000054307A5/ja
Withdrawn legal-status Critical Current

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Landscapes

  • Road Paving Structures (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve workability and economic efficiency of an elastic pavement composed of a material that chips of rubber or the like or inorganic granules such as silica sand or the like are mixed therewith, and a liquid binder. SOLUTION: In an elastic pavement composed of chips such as various kinds of rubber, synthetic resin, wooden chips, cork, or the like and/or inorganic granules and a liquid binder, a mixure of urethane prepolymer and methylene- crosslinked polyphenylene polyisocyanate is used as the liquid binder. The elastic pavements are applied or stuck on the base.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、各種の運動施設、
例えば陸上競技場、ジョギング走路、テニスコート、サ
ッカー場、その他多目的グラウンド等に適した改良弾性
舗装材、弾性舗装路面及びその施工方法に関する。
TECHNICAL FIELD The present invention relates to various sports facilities,
For example, the present invention relates to an improved elastic pavement material, an elastic pavement surface suitable for an athletic stadium, a jogging track, a tennis court, a soccer field, and other multipurpose grounds, and a construction method thereof.

【0002】[0002]

【従来の技術】従来、ゴム等のチップ或いはこれに珪砂
等の無機質粒状物を混合した物(以後ゴムチップ等と称
する)と液状バインダーとから成る弾性舗装が行われて
おり、各種の運動施設等に用いられている。また、その
表面に人工芝やポリウレタン樹脂等を被覆したものは特
に汎用されている。
2. Description of the Related Art Conventionally, an elastic pavement comprising a chip such as rubber or a mixture of inorganic particles such as silica sand or the like (hereinafter referred to as a rubber chip) and a liquid binder has been used. It is used for Those whose surface is coated with artificial turf, polyurethane resin or the like are particularly widely used.

【0003】[0003]

【発明が解決しようとする課題】液状バインダーとして
は合成樹脂エマルジョン等も用いられるが、最も汎用さ
れているものはウレタンプレポリマーである。ウレタン
プレポリマーは物性の点で優れたものであるが、粘度が
高いためゴムチップ等と混合する際に施工作業性が悪い
という欠点を有する。またウレタンプレポリマーは高価
である。従って本発明は安価で作業性が良く、硬化物の
物性も優れる液状バインダーの改良品を提供するもので
ある。
As the liquid binder, a synthetic resin emulsion or the like is used, but the most widely used one is a urethane prepolymer. Urethane prepolymers are excellent in physical properties, but have the disadvantage that their workability is poor when mixed with rubber chips or the like due to their high viscosity. Urethane prepolymers are expensive. Accordingly, the present invention provides an improved liquid binder which is inexpensive, has good workability, and has excellent physical properties of a cured product.

【0004】[0004]

【課題を解決するための手段】本発明者は、上記の欠点
を解決するための液状バインダーの改良、特にウレタン
プレポリマーの低粘化と低コスト化について鋭意検討し
た結果、液状バインダーとしてウレタンプレポリマーと
メチレン架橋ポリフェニレンポリイソシアネート(以後
クルードMDIと称する)との混合物を使用することに
より所期の目的が達成されることを見い出し本発明を完
成するに至った。
Means for Solving the Problems The present inventors have made intensive studies on the improvement of the liquid binder for solving the above-mentioned drawbacks, particularly on the reduction of the viscosity and cost of the urethane prepolymer, and as a result, the urethane prepolymer was used as the liquid binder. The inventors have found that the intended purpose can be achieved by using a mixture of a polymer and a methylene-crosslinked polyphenylene polyisocyanate (hereinafter referred to as crude MDI), and have completed the present invention.

【0005】一般にクルードMDIはウレタンプレポリ
マーに比べて粘度が低いから、クルードMDIを混合す
ればウレタンプレポリマーの低粘化に寄与し、施工作業
性が向上することは容易に推察されるが、同時にバイン
ダーとしての物性が低下することが予想された。しかし
ながら、予想に反してウレタンプレポリマーにクルード
MDIを混合したバインダーを使用すると、硬化物は少
し硬度が高くなるほか圧縮強度はむしろ向上し、一方施
工作業性が顕著に向上することがわかつた。同時にバイ
ンダーの使用量が削減できると同時に価格が低下するた
め、経済性の向上にも寄与することがわかった。なお、
施工作業性が良いというのは、具体的には次の点をい
う。 ゴムチップ等と混合しやすい。 ゴムチップ等の表面を濡らしやすい。 敷き均しやすい。 表面の補正、修正がしやすい。
Since crude MDI generally has a lower viscosity than urethane prepolymer, it is easily supposed that mixing crude MDI contributes to lowering the viscosity of the urethane prepolymer and improving workability. At the same time, it was expected that the physical properties of the binder would decrease. However, contrary to expectation, it was found that when a binder obtained by mixing crude MDI with a urethane prepolymer was used, the hardness of the cured product was slightly increased and the compressive strength was rather improved, while the workability was significantly improved. At the same time, the amount of binder used can be reduced, and at the same time, the price is reduced, which has been found to contribute to improvement in economic efficiency. In addition,
The fact that the workability is good means, specifically, the following points. Easy to mix with rubber chips. It is easy to wet the surface of rubber chips. Easy to spread. It is easy to correct and correct the surface.

【0006】バインダー硬化のメカニズムは次のように
考えられる。即ち、第1段階の反応を考えると、ウレタ
ンプレポリマーを単味で使用する場合は、ウレタンプレ
ポリマーの末端イソシアネート基同士が空気中の水分と
反応してウレア結合を生成する。同様に第2段階以降の
反応が起こり、固化していく。これに対してウレタンプ
レポリマーとクルードMDIとの混合物を使用する場合
は、第1段階の反応としてウレタンプレポリマーの末端
イソシアネート基同士、クルードMDIの末端イソシア
ネート基同士及びウレタンプレポリマーとクルードMD
Iの各末端イソシアネート基がそれぞれ空気中の水分と
反応してウレア結合を生成する3つのパターンが考えら
れる。更に第2段階以降の反応を考えると、上記の反応
生成物にウレタンプレポリマーとクルードMDIとが複
雑に絡み合って反応し固化する。そのため多種の硬化物
が生成し、物性の向上に寄与する。
[0006] The mechanism of binder curing is considered as follows. That is, considering the first stage reaction, when urethane prepolymer is used alone, the terminal isocyanate groups of the urethane prepolymer react with moisture in the air to generate a urea bond. Similarly, reactions in the second and subsequent stages occur and solidify. On the other hand, when a mixture of urethane prepolymer and crude MDI is used, terminal isocyanate groups of urethane prepolymer, terminal isocyanate groups of crude MDI, and urethane prepolymer and crude MD
There are three patterns in which each terminal isocyanate group of I reacts with moisture in the air to form a urea bond. Further, considering the reaction after the second stage, the urethane prepolymer and crude MDI are intricately entangled with the above reaction product and react and solidify. Therefore, various kinds of cured products are generated, which contributes to improvement of physical properties.

【0007】従ってウレタンプレポリマーにクルードM
DIを混合することにより得られる効果は次の通りであ
る。 バインダーの低粘化による施工作業性の向上 バインダーの低コスト化と使用量の削減による経済性
の向上 ウレタンプレポリマーとクルードMDIの複合硬化反
応による物性の向上
[0007] Therefore, crude M
The effects obtained by mixing DI are as follows. Improve workability by reducing binder viscosity Improve economic efficiency by reducing binder cost and use amount Improve physical properties by composite curing reaction of urethane prepolymer and crude MDI

【0008】即ち本発明は次の(1)〜(4)の通りで
ある。 (1)各種のゴム、合成樹脂、木片、コルク等のチップ
及び/又は無機質粒状物と液状バインダーとから成る弾
性舗装材において、液状バインダーとしてウレタンプレ
ポリマーとメチレン架橋ポリフェニレンポリイソシアネ
ートとの混合物を使用することを特徴とする弾性舗装
材。 (2)基盤の上に各種のゴム、合成樹脂、木片、コルク
等のチップ及び/又は無機質粒状物と液状バインダーと
から成る弾性層を積層敷設する弾性舗装路面において、
液状バインダーとしてウレタンプレポリマーとメチレン
架橋ポリフェニレンポリイソシアネートとの混合物を使
用することを特徴とする弾性舗装路面。 (3)基盤の上に各種のゴム、合成樹脂、木片、コルク
等のチップ及び/又は無機質粒状物と液状バインダーと
から成る弾性層を積層敷設する弾性舗装路面の施工方法
において、液状バインダーとしてウレタンプレポリマー
とメチレン架橋ポリフェニレンポリイソシアネートとの
混合物を使用することを特徴とする弾性舗装路面の施工
方法。 (4)(1)記載の弾性舗装材の成形品を基盤の上に貼
り付けることを特徴とする弾性舗装路面の施工方法。
That is, the present invention is as follows (1) to (4). (1) In an elastic pavement material comprising various kinds of rubber, synthetic resin, wood chips, cork and other chips and / or inorganic particles and a liquid binder, a mixture of a urethane prepolymer and a methylene-crosslinked polyphenylene polyisocyanate is used as a liquid binder. Elastic pavement material characterized by doing. (2) On an elastic pavement surface on which an elastic layer composed of various rubbers, synthetic resins, chips of wood, cork and the like and / or an inorganic granular material and a liquid binder is laid on a base,
An elastic pavement surface characterized by using a mixture of a urethane prepolymer and a methylene-crosslinked polyphenylene polyisocyanate as a liquid binder. (3) In a method of constructing an elastic pavement road surface in which an elastic layer composed of various kinds of chips such as rubber, synthetic resin, wood chips, cork, etc. and / or inorganic particulate matter and a liquid binder is laid on a base, urethane is used as a liquid binder in a method of constructing the surface A method for constructing an elastic pavement, comprising using a mixture of a prepolymer and a methylene-crosslinked polyphenylene polyisocyanate. (4) A method of constructing an elastic pavement road surface, which comprises applying a molded article of the elastic pavement material according to (1) on a base.

【0009】[0009]

【発明の実施の形態】基盤とはコンクリート、モルタ
ル、アスファルトコンクリート、木板、合成樹脂等公知
の硬質ないし軟質基盤のほか砕石層、栗石層等のいわゆ
る路盤層も含む。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The base includes well-known hard or soft bases such as concrete, mortar, asphalt concrete, wood board and synthetic resin, as well as so-called roadbed layers such as crushed stone layers and chestnut stone layers.

【0010】各種のゴムチップは、天然ゴム、スチレン
ブタジエンゴム、アクリルニトリルブタジエンゴム、ポ
リウレタンゴム、エチレンプロピレンターポリマー等の
単独又は複数の混合物からなるものであるが、経済性の
点からは、産業廃棄物としての廃タイヤを粉砕し粒調し
て得られるものが好適である。ゴム粉砕物の形状として
は、粒状またはある長さを持つひじき状のものが好まし
く、粒状物の粒径は1mm以上、なかでも2〜15mmのも
のが好適である。各種の合成樹脂チップは、上記のゴム
チップ以外の各種合成樹脂材料から得られる粒状物を含
む概念である。具体的には自動車のバンパーやゴルフボ
ールの粉砕品等があげられる。
Various types of rubber chips are made of one or a mixture of natural rubber, styrene butadiene rubber, acrylonitrile butadiene rubber, polyurethane rubber, ethylene propylene terpolymer and the like. What is obtained by crushing a waste tire as a product and sizing it is preferable. The shape of the pulverized rubber material is preferably a granular shape or a hijiki shape having a certain length, and the particle size of the granular material is preferably 1 mm or more, more preferably 2 to 15 mm. Various types of synthetic resin chips are concepts including particles obtained from various synthetic resin materials other than the above-described rubber chips. Specific examples include bumpers of automobiles and crushed golf balls.

【0011】無機質粒状物の例としては、山砂利、川砂
利等の天然石、寒水石、珪砂、人工石、スラグ、セラミ
ックス等の粒状物があり、粒径は1mm以上、とりわけ2
〜10mmのものが好適である。
Examples of the inorganic particulate matter include natural stones such as mountain gravel and river gravel, granites such as cold water stones, quartz sands, artificial stones, slags, ceramics and the like.
Those having a size of 10 to 10 mm are preferable.

【0012】液状バインダーとしては、ウレタンプレポ
リマーとクルードMDIとの混合物が用いられる。ウレ
タンプレポリマーは、末端にイソシアネート基を有する
全ての市販品が使用できる。通常末端イソシアネート基
含有率1〜10%のものが用いられる。クルードMDI
は、次の一般式で表され、各社から市販されているもの
である。 OCN−C64-[-CH2−C64-]n -NCO n=1,2,3,4--- クルードMDIの配合比は、通常ウレタンプレポリマー
に対して10〜200重量%量が適当である。なお弾性
舗装マットの基盤への貼付用の接着剤としては上記の液
状バインダーと同様の材料が用いられるほか市販の全て
の接着剤が使用可能である。
As the liquid binder, a mixture of a urethane prepolymer and crude MDI is used. As the urethane prepolymer, all commercially available products having an isocyanate group at a terminal can be used. Usually, those having a terminal isocyanate group content of 1 to 10% are used. Crude MDI
Is represented by the following general formula and is commercially available from various companies. OCN-C 6 H 4 - [ - CH 2 -C 6 H 4 -] mixing ratio of n -NCO n = 1,2,3,4 --- crude MDI is 10 to 200 with respect to the normal urethane prepolymer A weight percent amount is appropriate. As the adhesive for sticking to the base of the elastic pavement mat, the same material as the above-mentioned liquid binder can be used, and all commercially available adhesives can be used.

【0013】基盤の上に直接材料を流す舗装施工方法と
してはコテ、レーキ、ローラー、各種フィニッシャー等
を用いる手動式又は機械式の公知の方法が用いられる。
また弾性舗装材成型品の基盤への貼付は予め接着剤を塗
布した基盤の上にマットを並べることにより容易に施工
できる。
As a pavement construction method for flowing the material directly on the base, a known manual or mechanical method using an iron, a rake, a roller, various finishers and the like is used.
Also, the application of the elastic pavement molded product to the base can be easily performed by arranging the mat on the base to which the adhesive has been applied in advance.

【0014】本発明の弾性舗装路面の代表的施工方法と
して請求項3の場合は次のように行われる。基盤の上に
必要に応じてプライマーを塗布したのち、各種のゴム、
合成樹脂、木片、コルク等のチップ及び/又は無機質粒
状物と液状バインダーとを混合した材料をレーキ等で均
一に敷きならす。ここで自動式フィニッシャー、金ゴ
テ、ローラー等を用いて一度仕上げを行うか、又はこの
仕上げを省略した弾性層の上に再度上記の材料をレーキ
で均一に敷きならし、自動式フィニッシャーと金ゴテ、
ローラー等で仕上げる。必要により同様の操作を繰り返
す。
In the case of claim 3 as a typical construction method of the elastic pavement road surface of the present invention, the following method is carried out. After applying primer as needed on the base, various rubbers,
A material obtained by mixing chips and / or inorganic particulate matter such as synthetic resin, wood chips, cork and the like with a liquid binder is evenly spread with a lake or the like. At this point, finish once using an automatic finisher, gold iron, roller, etc., or spread the above material evenly on a rake again on the elastic layer from which this finish was omitted, and then use the automatic finisher and gold iron ,
Finish with a roller. Repeat the same operation as necessary.

【0015】本発明の弾性舗装路面はそのままで各種の
運動施設に使用できるが、表面には公知の方法に従って
人工芝やポリウレタン、ポリエステル、合成ゴム等を被
覆施工したものは特に優れた運動性能を示し、各種の運
動施設用の舗装面として使用することができる。
Although the elastic pavement surface of the present invention can be used as it is for various exercise facilities, the surface coated with artificial turf, polyurethane, polyester, synthetic rubber or the like according to a known method exhibits particularly excellent exercise performance. It can be used as a paving surface for various sports facilities.

【0016】[0016]

【実施例】以下に実施例により本発明を具体的に説明す
る。例中の部は重量部を表わす。初めに、本発明に使用
するプレポリマーの製造例を述べる。 (製造例1)ウレタンプレポリマーの製造 精製MDI(三井化学社製、MDI−PH)292部、
液状MDI(三井化学社製、MDI−LK)73部とP
PG DIOL−2000(三井化学社製、エチレング
リコールにプロピレンオキサイドを付加した分子量20
00のポリオール)535部とを均一に混合したのち、
80℃で2時間反応させて、末端イソシアネート含有量
9.0%、粘度3000 cps (25℃)のウレタンプレポ
リマーを製造した。また、クルードMDIとして、三井
化学社製MDI−CR(商品名コスモネート)を使用し
た。
The present invention will be specifically described below with reference to examples. Parts in the examples represent parts by weight. First, a production example of the prepolymer used in the present invention will be described. (Production Example 1) Production of urethane prepolymer 292 parts of purified MDI (MDI-PH, manufactured by Mitsui Chemicals, Inc.)
73 parts of liquid MDI (MDI-LK, manufactured by Mitsui Chemicals, Inc.) and P
PG DIOL-2000 (manufactured by Mitsui Chemicals, Inc., molecular weight of propylene oxide added to ethylene glycol of 20)
535 parts) and then uniformly mixed with 535 parts.
The mixture was reacted at 80 ° C. for 2 hours to produce a urethane prepolymer having a terminal isocyanate content of 9.0% and a viscosity of 3000 cps (25 ° C.). Further, as crude MDI, MDI-CR (trade name: Cosmonate) manufactured by Mitsui Chemicals, Inc. was used.

【0017】実施例 1 廃タイヤを粉砕して得た粒径2〜6mmのゴムチップ10
0部、製造例1のウレタンプレポリマー5部とクルード
MDI5部とからなる液状バインダーをモルタルミキサ
ーで均一に混合したのち、モールド中に均一に敷きなら
し、金属ローラーで転圧し、厚さ3cmの弾性層を作っ
た。混合した材料は適度の流動性を有し、施工作業性は
良好であった。得られた弾性マットは弾性に富み、強度
及び耐久性にも優れたものであった。
Example 1 A rubber chip 10 having a particle size of 2 to 6 mm obtained by grinding waste tires
0 parts, 5 parts of the urethane prepolymer of Production Example 1 and 5 parts of crude MDI were mixed uniformly with a mortar mixer, spread evenly in a mold, and pressed with a metal roller to form a 3 cm-thick sheet. An elastic layer was made. The mixed material had an appropriate fluidity and the workability was good. The resulting elastic mat was rich in elasticity and excellent in strength and durability.

【0018】実施例 2 廃タイヤを粉砕して得た粒径2〜6mmのゴムチップ10
0部、粒径3〜5mmの珪砂150部及び製造例1のウ
レタンプレポリマー5部とクルードMDI5部とから成
る液状バインダーをモルタルミキサーで均一に混合した
材料を、モールド中に均一に敷きならし、金属ローラー
で転圧し、厚さ3cmの弾性層を作った。混合した材料は
適度の流動性を有し、施工作業性は良好であった。得ら
れた弾性マットは圧縮強度及び耐久性に優れたものであ
った。
Example 2 A rubber chip 10 having a particle size of 2 to 6 mm obtained by grinding a waste tire.
A material obtained by uniformly mixing a liquid binder composed of 0 parts, 150 parts of silica sand having a particle size of 3 to 5 mm, 5 parts of the urethane prepolymer of Production Example 1 and 5 parts of crude MDI with a mortar mixer is spread evenly in a mold. Then, it was rolled with a metal roller to form an elastic layer having a thickness of 3 cm. The mixed material had an appropriate fluidity and the workability was good. The obtained elastic mat was excellent in compressive strength and durability.

【0019】実施例 3 廃タイヤを粉砕して得た粒径2〜6mmのゴムチップ10
0部、製造例1のウレタンプレポリマー9部及びクルー
ドMDI2部をモルタルミキサーで均一に混合した材料
を、開粒アスファルトコンクリート基盤上にレーキで均
一に敷きならし、厚さ2cmの弾性層を得た。次にこの上
に再度上記の材料を敷きならし、自動式フィニッシャー
と金ゴテで仕上げ、厚さ2cmの弾性層を得た。弾性層の
合計厚み4cm。得られた弾性舗装路面は高強度で弾性に
富み、歩行感に優れ、同時に長期間の使用によっても不
陸や亀裂等の発生がなく、耐久性に優れていた。この弾
性舗装路面はそのままで各種の運動施設、例えば陸上競
技場、ジョギング走路、テニスコート、サッカー場その
他多目的グラウンド等に適していた。また、得られた弾
性舗装路面の上に揺変性ポリウレタン材料をリシンガン
を用いて厚さ1mmに施工し、表面が凹凸状のテニスコー
ト等に適した舗装面を得た。
Example 3 A rubber chip 10 having a particle size of 2 to 6 mm obtained by grinding waste tires
0 parts, 9 parts of the urethane prepolymer of Production Example 1 and 2 parts of crude MDI were uniformly mixed with a mortar mixer, and the mixture was evenly spread on an open asphalt concrete base with a lake to obtain an elastic layer having a thickness of 2 cm. Was. Next, the above-mentioned material was laid again thereon, and finished with an automatic finisher and a metal iron to obtain an elastic layer having a thickness of 2 cm. Total thickness of elastic layer 4cm. The obtained elastic pavement road surface was high in strength and rich in elasticity, was excellent in walking feeling, and at the same time, was free from irregularities and cracks even after long-term use, and was excellent in durability. The elastic pavement road surface was suitable for various sports facilities, such as an athletic stadium, a jogging track, a tennis court, a soccer field and other multipurpose grounds. Also, a thixotropic polyurethane material was applied to the obtained elastic pavement road surface to a thickness of 1 mm using a ricin gun to obtain a pavement surface suitable for a tennis court having an uneven surface.

【0020】実施例 4 実施例1の弾性マットを予めウレタン接着剤を塗布した
開粒アスファルトコンクリート基盤上に貼り付けて厚さ
3cmの弾性舗装路面を得た。得られた弾性舗装路面は高
強度で弾性に富み、歩行感に優れ、同時に長期間の使用
によっても不陸や亀裂等の発生がなく、耐久性に優れて
いた。この弾性舗装路面はそのままで各種の運動施設、
例えば陸上競技場、ジョギング走路、テニスコート、サ
ッカー場その他多目的グラウンド等に適していた。
Example 4 The elastic mat of Example 1 was pasted on an open asphalt concrete base to which a urethane adhesive had been applied in advance to obtain an elastic pavement road surface having a thickness of 3 cm. The obtained elastic pavement road surface was high in strength and rich in elasticity, was excellent in walking feeling, and at the same time, was free from irregularities and cracks even after long-term use, and was excellent in durability. Various exercise facilities,
For example, it was suitable for a track and field stadium, a jogging track, a tennis court, a soccer field and other multipurpose grounds.

【0021】実施例 5 廃タイヤを粉砕して得た粒径2〜6mmのゴムチップ28
0部と、粒径3〜5mmの珪砂550部と、製造例1のウ
レタンプレポリマー40部及びクルードMDI40部を
モルタルミキサーで均一に混合した材料を、砕石層上に
レーキで均一に敷きならし、自動式フィニッシャーと金
ゴテで仕上げ、厚さ3cmの弾性層を得た。混合した材料
は適度の流動性を有し、施工作業性は良好であった。次
にこの上に上記の液状バインダーを散布して十分浸透さ
せた。得られた弾性舗装路面は高強度で弾性に富み、歩
行感に優れ、同時に長期間の使用によっても不陸や亀裂
等の発生がなく、耐久性に優れていた。この弾性舗装路
面はそのままで各種の運動施設、例えば陸上競技場、ジ
ョギング走路、テニスコート、サッカー場その他多目的
グラウンド等に適していた。
Example 5 A rubber chip 28 having a particle size of 2 to 6 mm obtained by grinding a waste tire.
0 parts, 550 parts of silica sand having a particle size of 3 to 5 mm, 40 parts of the urethane prepolymer of Preparation Example 1 and 40 parts of crude MDI were uniformly mixed with a mortar mixer, and the mixture was evenly spread on a crushed stone layer with a lake. Then, finishing was performed with an automatic finisher and a metal iron to obtain an elastic layer having a thickness of 3 cm. The mixed material had an appropriate fluidity and the workability was good. Next, the above-mentioned liquid binder was sprayed thereon to sufficiently permeate. The obtained elastic pavement road surface was high in strength and rich in elasticity, was excellent in walking feeling, and at the same time, was free from irregularities and cracks even after long-term use, and was excellent in durability. The elastic pavement road surface was suitable for various sports facilities, such as an athletic stadium, a jogging track, a tennis court, a soccer field and other multipurpose grounds.

【0022】実施例 6 実施例1及び4で得られた弾性舗装路面の上に市販の2
液性ポリウレタン材料を厚さ2mmに施工し、さらにその
上に揺変性ポリウレタン材料をリシンガンを用いて厚さ
1mmに施工し、表面が凹凸状のテニスコート等に適した
舗装面を得た。この舗装面は球のバウンド性にすぐれ、
耐久性にも優れたものであった。
Example 6 A commercially available 2 was placed on the elastic pavement obtained in Examples 1 and 4.
A liquid polyurethane material was applied to a thickness of 2 mm, and a thixotropic polyurethane material was applied thereon to a thickness of 1 mm using a ricin gun to obtain a pavement surface having an uneven surface suitable for a tennis court or the like. This pavement surface has excellent ball bounce properties,
It was also excellent in durability.

【0023】実施例 7 実施例1及び4で得られた弾性舗装路面の上に市販の人
工芝を敷設し、テニスコート等に適した舗装面を得た。
この舗装面は球のバウンド性に優れ、耐久性にも優れた
ものであった。
Example 7 A commercially available artificial turf was laid on the elastic pavement obtained in Examples 1 and 4 to obtain a pavement suitable for a tennis court or the like.
This paved surface was excellent in ball bouncing properties and also excellent in durability.

【0024】実施例 8 廃バンパー(ポリウレタン製)を粉砕して得た粒径2〜
6mmのチップ100部、製造例1のウレタンプレポリマ
ー5部及びクルードMDI5部をモルタルミキサーで均
一に混合したのち、開粒アスファルトコンクリート基盤
上にレーキで均一に敷きならし、厚さ1cmの弾性層を得
た。混合した材料は適度の流動性を有し、作業性は良好
であった。次にこの弾性層の上に再度上記の材料を敷き
ならし、自動式フィニッシャーと金ゴテで仕上げ、厚さ
1cmの弾性層を得た。弾性層の合計厚み2cm。得られた
弾性舗装路面は歩行感に優れ、同時に長期間の使用によ
っても不陸や亀裂等の発生がなく、耐久性に優れてい
た。この弾性舗装路面はそのままで各種の運動施設、例
えば陸上競技場、ジョギング走路、テニスコート、サッ
カー場その他多目的グラウンド等に適していた。
Example 8 A particle size 2 obtained by grinding a waste bumper (made of polyurethane)
100 parts of 6 mm chips, 5 parts of urethane prepolymer of Production Example 1 and 5 parts of crude MDI were uniformly mixed with a mortar mixer, and then evenly spread on a raked asphalt concrete base with a rake to form an elastic layer having a thickness of 1 cm. I got The mixed material had an appropriate fluidity and workability was good. Next, the above-mentioned material was spread again on the elastic layer, and finished with an automatic finisher and a metal iron to obtain an elastic layer having a thickness of 1 cm. The total thickness of the elastic layer is 2cm. The obtained elastic pavement road surface was excellent in walking sensation, and at the same time, was free from irregularities and cracks even after long-term use, and was excellent in durability. The elastic pavement road surface was suitable for various sports facilities, such as an athletic stadium, a jogging track, a tennis court, a soccer field and other multipurpose grounds.

【0025】比較例 1 実施例1において液状バインダーとしてウレタンプレポ
リマー5部及びクルードMDI5部の代わりにウレタン
プレポリマー10部を用いたところ、バインダーが粘ち
ょうなためモルタルミキサーで均一に混合できず、敷き
ならし、転圧ともに不調であった。ウレタンプレポリマ
ーの量を20部に増量してようやく施工することができ
た。
Comparative Example 1 In Example 1, when 10 parts of a urethane prepolymer was used as a liquid binder instead of 5 parts of a urethane prepolymer and 5 parts of crude MDI, the binder was too viscous to mix uniformly with a mortar mixer. Laying and rolling were both unsatisfactory. The construction was finally completed by increasing the amount of the urethane prepolymer to 20 parts.

【0026】[0026]

【発明の効果】ゴム等のチップ或いはこれに珪砂等の無
機質粒状物を混合した物と液状バインダーとから成る弾
性舗装の施工性、経済性を上げると同時に強度、耐久性
を上げることができる。
According to the present invention, it is possible to improve the workability and economic efficiency of the elastic pavement comprising a liquid binder and a mixture of chips such as rubber or inorganic particles such as silica sand and the like, as well as strength and durability.

【手続補正書】[Procedure amendment]

【提出日】平成10年9月24日(1998.9.2
4)
[Submission date] September 24, 1998 (1998.9.2)
4)

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0012[Correction target item name] 0012

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0012】液状バインダーとしては、ウレタンプレポ
リマーとクルードMDIとの混合物が用いられる。ウレ
タンプレポリマーは、末端にイソシアネート基を有する
全ての市販品が使用できる。通常末端イソシアネート基
含有率1〜10%のものが用いられる。クルードMDI
は、次の一般式で表され、各社から市販されているもの
である。
As the liquid binder, a mixture of a urethane prepolymer and crude MDI is used. As the urethane prepolymer, all commercially available products having an isocyanate group at a terminal can be used. Usually, those having a terminal isocyanate group content of 1 to 10% are used. Crude MDI
Is represented by the following general formula and is commercially available from various companies.

【化1】 クルードMDIの配合比は、通常ウレタンプレポリマー
に対して10〜200重量%量が適当である。なお弾性
舗装マットの基盤への貼付用の接着剤としては上記の液
状バインダーと同様の材料が用いられるほか市販の全て
の接着剤が使用可能である。
Embedded image The blending ratio of crude MDI is usually from 10 to 200% by weight based on the urethane prepolymer. As the adhesive for sticking to the base of the elastic pavement mat, the same material as the above-mentioned liquid binder can be used, and all commercially available adhesives can be used.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂口 博英 神奈川県横浜市栄区笠間町1190番地 三井 化学株式会社内 (72)発明者 周防 勇 東京都千代田区麹町3丁目7番10号 東洋 スポーツ施設株式会社内 (72)発明者 石橋 芳晴 東京都千代田区麹町3丁目7番10号 東洋 スポーツ施設株式会社内 (72)発明者 小林 憲司 東京都千代田区麹町3丁目7番10号 東洋 スポーツ施設株式会社内 Fターム(参考) 2D051 AB04 AD07 AF01 AF05 AF07 AF09 AG03 AG06 AG11 AG13 AH01 AH05 DC09 EA02 EA06 EB05 EB06 4J034 HA01 HA02 HA06 HC12 HC63 HC67 HC71 MA04 MA22 MA26 QB15 RA10  ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hirohide Sakaguchi 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Within Mitsui Chemicals Co., Ltd. Inside the company (72) Inventor Yoshiharu Ishibashi 3-7-10 Kojimachi, Chiyoda-ku, Tokyo Toyo Sports Facility Co., Ltd. (72) Inventor Kenji Kobayashi 3-7-10 Kojimachi, Chiyoda-ku, Tokyo Toyo Sports Facilities Co., Ltd. F term (reference) 2D051 AB04 AD07 AF01 AF05 AF07 AF09 AG03 AG06 AG11 AG13 AH01 AH05 DC09 EA02 EA06 EB05 EB06 4J034 HA01 HA02 HA06 HC12 HC63 HC67 HC71 MA04 MA22 MA26 QB15 RA10

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】各種のゴム、合成樹脂、木片、コルク等の
チップ及び/又は無機質粒状物と液状バインダーとから
成る弾性舗装材において、液状バインダーとしてウレタ
ンプレポリマーとメチレン架橋ポリフェニレンポリイソ
シアネートとの混合物を使用することを特徴とする弾性
舗装材。
1. An elastic pavement comprising chips and / or inorganic particulate matter such as rubber, synthetic resin, wood chips, cork, etc., and a liquid binder, and a mixture of a urethane prepolymer and a methylene-crosslinked polyphenylene polyisocyanate as a liquid binder. Elastic pavement material characterized by using.
【請求項2】基盤の上に各種のゴム、合成樹脂、木片、
コルク等のチップ及び/又は無機質粒状物と液状バイン
ダーとから成る弾性層を積層敷設する弾性舗装路面にお
いて、液状バインダーとしてウレタンプレポリマーとメ
チレン架橋ポリフェニレンポリイソシアネートとの混合
物を使用することを特徴とする弾性舗装路面。
2. Rubber, synthetic resin, wood chips,
A mixture of a urethane prepolymer and a methylene-crosslinked polyphenylene polyisocyanate is used as a liquid binder on an elastic pavement surface on which an elastic layer composed of chips such as cork and / or inorganic particulate matter and a liquid binder is laminated and laid. Elastic pavement.
【請求項3】基盤の上に各種のゴム、合成樹脂、木片、
コルク等のチップ及び/又は無機質粒状物と液状バイン
ダーとから成る弾性層を積層敷設する弾性舗装路面の施
工方法において、液状バインダーとしてウレタンプレポ
リマーとメチレン架橋ポリフェニレンポリイソシアネー
トとの混合物を使用することを特徴とする弾性舗装路面
の施工方法。
3. Various rubbers, synthetic resins, wood chips,
In a method for constructing an elastic pavement surface on which an elastic layer comprising chips such as cork and / or inorganic particles and a liquid binder and a liquid binder are laid, a mixture of a urethane prepolymer and a methylene-crosslinked polyphenylene polyisocyanate is used as a liquid binder. A characteristic method for constructing elastic pavement roads.
【請求項4】請求項1記載の弾性舗装材の成形品を基盤
の上に貼り付けることを特徴とする弾性舗装路面の施工
方法。
4. A method for constructing an elastic pavement road surface, characterized in that a molded article of the elastic pavement material according to claim 1 is attached to a base.
JP10219944A 1998-08-04 1998-08-04 Elastic pavement, elastic pavement face, and execution method thereof Withdrawn JP2000054307A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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JP2000054307A true JP2000054307A (en) 2000-02-22
JP2000054307A5 JP2000054307A5 (en) 2005-09-02

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101018445B1 (en) * 2010-03-15 2011-03-04 김동현 Manufacturing method of cork chips for paving of road and pavement method having drain function using the cork chips
KR101058439B1 (en) 2008-09-29 2011-08-24 소재철 Processed Cork Chips for Elastic Packaging and Construction Method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101058439B1 (en) 2008-09-29 2011-08-24 소재철 Processed Cork Chips for Elastic Packaging and Construction Method
KR101018445B1 (en) * 2010-03-15 2011-03-04 김동현 Manufacturing method of cork chips for paving of road and pavement method having drain function using the cork chips

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