JP6584620B1 - Thermal barrier pavement material and thermal barrier pavement - Google Patents
Thermal barrier pavement material and thermal barrier pavement Download PDFInfo
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Abstract
【課題】歩道の表面や広場の表面等の温度が太陽光の照射により温度が上がるのを抑制することができる遮熱性舗装用材料および遮熱性舗装体を提供する。【解決手段】原材料として、コルク粒：３０〜４５質量％と、樹脂バインダー：３０〜５０質量％と、砂：５〜４０質量％を混合してなり、遮熱性をもたせたことを特徴とする遮熱性舗装用材料である。コルク粒の粒径は、０．５〜３．０ｍｍの範囲内が好ましい。また、前記樹脂バインダーはエポキシ樹脂混合物からなる主剤と、液状ブタジエンゴムあるいはその誘導体とその他ポリアミン化合物またはそれらの変性物からなる硬化剤と、添加剤成分および促進剤成分からなるものである。【選択図】図１[PROBLEMS] To provide a heat-shielding pavement material and a heat-shielding pavement capable of suppressing the temperature of the surface of a sidewalk, the surface of a plaza, and the like from rising due to the irradiation of sunlight. SOLUTION: As a raw material, cork grains: 30 to 45% by mass, resin binder: 30 to 50% by mass, and sand: 5 to 40% by mass are mixed to provide heat insulation. It is a heat-shielding pavement material. The particle diameter of the cork grains is preferably in the range of 0.5 to 3.0 mm. The resin binder is composed of a main agent composed of an epoxy resin mixture, a liquid butadiene rubber or derivative thereof, a curing agent composed of other polyamine compounds or their modifications, an additive component and an accelerator component. [Selection] Figure 1
Description
本発明は、歩道の表面や広場の表面等の温度が太陽光の照射により温度が上がるのを抑制することができる遮熱性舗装用材料および遮熱性舗装体に関するものである。 The present invention relates to a heat-shielding pavement material and a heat-shielding pavement capable of suppressing the temperature of the surface of a sidewalk, the surface of a plaza, etc. from rising due to the irradiation of sunlight.
最近では、都市化が進んで自然土からなる道路や駐車場等はなくなり、コンクリート系舗装を施したものやアスファルト系舗装を施したものがほとんどである。これらは、従来の自然土からなる道路や駐車場等と違って、晴天時には砂塵や埃が発生しにくく、また、雨天時には水溜りやぬかるみやが発生しにくい構造で優れたものである。しかしながら、コンクリート系舗装は固すぎるという問題や自然の風合いがない等の問題を有しており、アスファルト系舗装は強度が低いという問題や夏季にはべたつく等の問題を有していた。 Recently, urbanization has progressed and there are no roads or parking lots made of natural soil, and most of them have concrete pavement or asphalt pavement. Unlike conventional roads and parking lots made of natural soil, they are excellent in a structure that is less likely to generate dust and dirt during fine weather, and less likely to cause puddles and muddyness during rainy weather. However, concrete pavement has problems such as being too hard and lacking natural texture, and asphalt pavement has problems such as low strength and stickiness in summer.
そこで、クッション性や自然の風合いを付与したり、強度を高めたりする等の目的で、樹脂系バインダーとともにコルクチップを含有させた舗装用材料が開発され提案されている（例えば、特許文献１〜特許文献３を参照）。
一方、最近では気候現象の変化が生じており、夏場における気温の上昇が激しく真夏日を超える日が連日続いて、公園、遊歩道、広場、ジョギングコース等の温度が異常に高くなる傾向があった。この結果、炎天下でジョギングやイベント等を行うと熱中症患者が多数出るという問題が生じてきた。
Therefore, paving materials containing cork chips together with resin binders have been developed and proposed for the purpose of imparting cushioning properties and natural texture, and increasing strength (for example, Patent Documents 1 to 3). (See Patent Document 3).
On the other hand, there has recently been a change in climatic phenomena, and the temperature in the summertime is so high that the days exceeding the midsummer day have continued every day, and the temperature of parks, promenades, plazas, jogging courses, etc. tended to be abnormally high. . As a result, there has been a problem that a lot of heat stroke patients appear when jogging or an event is performed under hot weather.
しかし、上記の特許文献１〜特許文献３に記載の舗装用材料においては、クッション性や耐摩耗性を高めたりする等の効果は奏するものの、路面の温度上昇を抑制するという効果は全く得られないものであった。
そこで、夏季における公園、遊歩道、広場、ジョギングコース等の温度上昇を抑制することが可能で、ジョギングや各種イベントや歩行者天国等を行っても熱中症患者の発生を極力抑えることができる遮熱性舗装用材料の開発が要望されていた。
However, in the pavement materials described in Patent Documents 1 to 3, the effect of suppressing the temperature rise on the road surface is obtained at all, although the effects such as improving the cushioning property and the wear resistance are exhibited. It was not.
Therefore, it is possible to suppress the temperature rise of parks, promenades, plazas, jogging courses, etc. in summer, and heat insulation that can suppress the occurrence of heat stroke patients as much as possible even if jogging, various events, pedestrian heaven, etc. There has been a demand for the development of paving materials.
本発明は上記のような従来の問題点を解決して、太陽光の照射により歩道や広場の表面等の温度が急激に上がるのを抑制することが可能で、夏季であってもジョギングや各種イベントや歩行者天国等を問題なく実行することができ、更には優れた透水性および弾性も有している遮熱性舗装用材料および遮熱性舗装体を提供することを目的とするものである。 The present invention solves the conventional problems as described above, and can suppress a sudden rise in the temperature of the sidewalk, the surface of a plaza, etc. due to the irradiation of sunlight. An object of the present invention is to provide a heat-shielding pavement material and a heat-shielding pavement that can execute an event, a pedestrian heaven, or the like without problems, and also have excellent water permeability and elasticity.
上記課題を解決するためになされた本発明の遮熱性舗装用材料は、原材料として、コルク粒：３０〜４５質量％と、樹脂バインダー：３０〜５０質量％と、砂：５〜４０質量％を混合してなり、遮熱性をもたせた遮熱性舗装用材料であって、
前記樹脂バインダーが、エポキシ基を２個以上有するポリエポキシ化合物に、モノエポキシおよびジエポキシの反応性希釈剤または非反応性希釈剤を添加したエポキシ樹脂混合物からなる主剤と、
炭素数Ｃ ８ 以上の長鎖アルキル基を有する疎水性のモノアミン化合物と両末端にアミノ基、水酸基カルボキシル基の少なくとも1つを有する液状ブタジエンゴムあるいはその誘導体とその他ポリアミン化合物またはそれらの変性物からなる硬化剤と、
添加によりバインダー表面に親水基が配向し、バインダー樹脂の濡れ性を表面改質できる添加剤成分および促進剤成分からなるものであることを特徴とするものであり、これを請求項１に係る発明とする。
The heat-shielding pavement material of the present invention made to solve the above problems includes, as raw materials, cork grains: 30 to 45% by mass, resin binder: 30 to 50% by mass, and sand: 5 to 40% by mass. A heat- shielding pavement material that is mixed and has heat- shielding properties,
The resin binder is a main component composed of an epoxy resin mixture obtained by adding a reactive diluent or a non-reactive diluent of monoepoxy and diepoxy to a polyepoxy compound having two or more epoxy groups;
A hydrophobic monoamine compound having a long-chain alkyl group having 8 or more carbon atoms , a liquid butadiene rubber having at least one of an amino group and a hydroxyl group carboxyl group at both ends, or a derivative thereof, and other polyamine compounds or modified products thereof. A curing agent;
The invention according to claim 1 is characterized by comprising an additive component and an accelerator component capable of modifying the wettability of the binder resin by orienting hydrophilic groups on the binder surface. And
好ましい実施形態によれば、前記コルク粒の粒径が、０．５〜３．０ｍｍの範囲内であるものが好ましく、これを請求項２に係る発明とする。 According to a preferred embodiment, it is preferable that the cork grain has a particle diameter in the range of 0.5 to 3.0 mm, and this is the invention according to claim 2.
上記課題を解決するためになされた本発明の遮熱性舗装体は、請求項１〜２のいずれかに記載の遮熱性舗装用材料を、表層上に舗装厚みが１〜５ｍｍとなるように舗装して遮熱層を形成したことを特徴とするものであり、これを請求項３に係る発明とする。 The heat-shielding pavement of the present invention, which has been made to solve the above-mentioned problems, paved the heat-shielding pavement material according to any one of claims 1 and 2 so that the pavement thickness is 1 to 5 mm on the surface layer. Thus, a heat shield layer is formed, and this is the invention according to claim 3 .
請求項１に係る発明では、原材料として、コルク粒：３０〜４５質量％と、樹脂バインダー：３０〜５０質量％と、砂：５〜４０質量％を混合してなり、遮熱性をもたせたものとしたので、太陽光の照射により表面温度が急激に上がるのを抑制することができ、夏場であってもジョギングや各種イベントや歩行者天国等を問題なく実行することが可能となる。
また、前記樹脂バインダーが、エポキシ基を２個以上有するポリエポキシ化合物に、モノエポキシおよびジエポキシの反応性希釈剤または非反応性希釈剤を添加したエポキシ樹脂混合物からなる主剤と、炭素数Ｃ ８ 以上の長鎖アルキル基を有する疎水性のモノアミン化合物と両末端にアミノ基、水酸基カルボキシル基の少なくとも1つを有する液状ブタジエンゴムあるいはその誘導体とその他ポリアミン化合物またはそれらの変性物からなる硬化剤と、添加によりバインダー表面に親水基が配向し、バインダー樹脂の濡れ性を表面改質できる添加剤成分および促進剤成分からなるものとしたので、比重が小さく細粒のコルク粒と砂とを簡便に均一な混合ができかつ十分な接着力で強固に固定することが可能で、十分な耐久性および耐摩耗性を確保することができる。
In the invention according to claim 1, as a raw material, cork grains: 30 to 45% by mass, resin binder: 30 to 50% by mass, and sand: 5 to 40% by mass are mixed to provide heat shielding properties. Therefore, it is possible to prevent the surface temperature from rapidly increasing due to the irradiation of sunlight, and it is possible to execute jogging, various events, pedestrian heaven and the like without any problem even in summer.
Further, the resin binder comprises a main agent comprising an epoxy resin mixture obtained by adding a reactive diluent or a non-reactive diluent of monoepoxy and diepoxy to a polyepoxy compound having two or more epoxy groups, and a carbon number of 8 or more. A hydrophobic monoamine compound having a long-chain alkyl group, a liquid butadiene rubber having at least one of an amino group and a hydroxyl group at both ends, or a derivative thereof, and a curing agent comprising a polyamine compound or a modified product thereof. Since the hydrophilic group is orientated on the binder surface and the wettability of the binder resin is made of an additive component and an accelerator component, the fine cork particles and sand can be easily and uniformly made of a small specific gravity. Can be mixed and firmly fixed with sufficient adhesive strength, providing sufficient durability and wear resistance It can be coercive.
また、請求項２に係る発明では、前記コルク粒の粒径が、０．５〜３．０ｍｍの範囲内としたので、舗装厚みが薄くてもコルク粒の含有量を多くすることが可能で十分な遮熱効果を得ることができ、また弾力性も確保することができる。 Moreover, in the invention which concerns on Claim 2, since the particle size of the said cork grain was made into the range of 0.5-3.0 mm, even if pavement thickness is thin, it is possible to increase content of a cork grain. A sufficient heat shielding effect can be obtained, and elasticity can be secured.
また、請求項３に係る発明では、請求項１〜２のいずれかに記載の遮熱性舗装用材料を、表層上に舗装厚みが１〜５ｍｍとなるように舗装して遮熱層を形成したので、コテ等で簡単に舗装することが可能で施工処理を簡単かつ短時間で行うことができる。 Moreover, in the invention which concerns on Claim 3 , the heat shielding pavement material in any one of Claims 1-2 was paved so that the pavement thickness might be set to 1-5 mm on the surface layer, and the heat shielding layer was formed. Therefore, it can be paved easily with a trowel or the like, and the construction process can be performed easily and in a short time.
以下に、本発明の好ましい実施の形態を示す。
本発明は、原材料として少なくともコルク粒、樹脂バインダー、残部の砂の三つの原料を混合したものであり、それらの含有量はコルク粒：３０〜４５質量％、樹脂バインダー：３０〜５０質量％、砂：５〜４０質量％の範囲である。
以下に、これらの原料について説明する。
Hereinafter, preferred embodiments of the present invention will be described.
The present invention is a mixture of at least three raw materials of cork grains, a resin binder, and the remaining sand as raw materials, and their contents are cork grains: 30 to 45% by mass, resin binders: 30 to 50% by mass, Sand: It is the range of 5-40 mass%.
Below, these raw materials are demonstrated.
前記コルク粒は、気体の入った微細な細胞質で構成され、軽量、保温性、弾性、耐摩耗性、断熱性、透水性等の特性を有するものであり、従来から透水性弾性舗装用材料の原料として使用されている（特許文献１〜特許文献３を参照）。ただし、従来においては、弾性、耐摩耗性、透水性等を要求される遊歩道やジョギングコース等の舗装材の添加材料として適用されており、コルク粒の粒径は、０．５〜５．０ｍｍと大きく、また含有量は０．５〜１５．０質量％と少ないものであった。 The cork grain is composed of fine cytoplasm containing gas and has characteristics such as light weight, heat retention, elasticity, abrasion resistance, heat insulation, water permeability, and the like. It is used as a raw material (see Patent Documents 1 to 3). However, conventionally, it is applied as an additive material for pavement materials such as boardwalks and jogging courses that require elasticity, wear resistance, water permeability, etc., and the particle size of cork grains is 0.5 to 5.0 mm. The content was as small as 0.5 to 15.0% by mass.
一方、本発明は夏場において公園、遊歩道、広場、ジョギングコース等の温度が高くなっても路面の温度上昇を抑制することができて熱中症患者の発生を抑えることができる遮熱性舗装用材料の開発を目的に研究した結果、所定の粒径のコルク粒を所定量含有させ、かつ特定の樹脂バインダーと混合すれば遮熱性を有する弾性舗装用材料が得られることを見出し、本発明の完成に至ったものである。 On the other hand, the present invention is a heat-shielding pavement material that can suppress the temperature rise of the road surface and suppress the occurrence of heat stroke patients even if the temperature of a park, a promenade, a plaza, a jogging course, etc. becomes high in summer. As a result of research for the purpose of development, it has been found that if a predetermined amount of cork grains having a predetermined particle diameter is contained and mixed with a specific resin binder, an elastic pavement material having heat shielding properties can be obtained. It has come.
本発明では、コルク粒の粒径は０．５〜３．０ｍｍの範囲内である。本発明では舗装厚みが１〜５ｍｍの遮熱層の内部にコルク粒を均等に分散させる必要があり、粒径の小さいものを用いる。より好ましくは、粒径は１．０〜２．０ｍｍの範囲内である。
また、コルク粒の含有量は３０〜４５質量％と多く含むものである。３０質量％未満では十分な遮熱効果を得ることが難しく、４５質量％より多いと傷付きやすくなって舗装の耐久性が劣るからである。
In the present invention, the cork grain size is in the range of 0.5 to 3.0 mm. In this invention, it is necessary to disperse | distribute cork grain uniformly inside the thermal-insulation layer whose pavement thickness is 1-5 mm, and a thing with a small particle size is used. More preferably, the particle size is in the range of 1.0 to 2.0 mm.
The cork grain content is as high as 30 to 45% by mass. If it is less than 30% by mass, it is difficult to obtain a sufficient heat shielding effect, and if it exceeds 45% by mass, it becomes easy to be damaged and the durability of the pavement is inferior.
前記樹脂バインダーは、従来のものと異なり、特殊な主剤と、硬化剤と、添加剤成分および促進剤成分からなるものである。以下に、それぞれについて説明する。
本発明では、遮熱層が５ｍｍ以下程度の薄層であるため、樹脂が可撓性を有して、ひび割れにくい低収縮性であることが必要である。従来から、弾性を有する樹脂として、例えばゴムチップ舗装に使用されるウレタンバインダーがあるが、ウレタンプレポリマーは粘度高く粘りがあり、また、コルクチップの比重がゴムチップの１／３程度と小さいため混合時に団粒化して施工性が困難で、硬化物は疎水性表面となるという問題があった。また、水分散系のエポキシ樹脂に用いた場合は、親水性表面で透水性は損なわれず遮熱効果があるが、水をある程度取り組んで硬化するために収縮性があり、ひび割れ等の発生、舗装の持ち上げ等の問題が発生するという問題があった。従って、現状ではコルクチップ混合物に適する樹脂バインダーがないという状態であった。
Unlike the conventional resin binder, the resin binder is composed of a special main agent, a curing agent, an additive component and an accelerator component. Each will be described below.
In the present invention, since the heat-insulating layer is a thin layer of about 5 mm or less, the resin needs to have flexibility and low shrinkage that is difficult to crack. Conventionally, as a resin having elasticity, there is a urethane binder used for, for example, rubber chip paving, but a urethane prepolymer has high viscosity and viscosity, and the specific gravity of a cork chip is as small as about 1/3 of that of a rubber chip. There was a problem that the workability was difficult due to aggregation, and the cured product had a hydrophobic surface. In addition, when used for water-dispersed epoxy resins, it has a heat-shielding effect on the hydrophilic surface without impairing water permeability. There was a problem that a problem such as lifting of the door occurred. Therefore, at present, there is no resin binder suitable for the cork chip mixture.
そこで本発明者は鋭意研究した結果、樹脂バインダーは、エポキシ基を２個以上有するポリエポキシ化合物に、モノエポキシおよびジエポキシの反応性希釈剤または非反応性希釈剤を添加したエポキシ樹脂混合物からなる主剤と、炭素数Ｃ８以上の長鎖アルキル基を有する疎水性のモノアミン化合物と両末端にアミノ基、水酸基カルボキシル基の少なくとも１つを有する液状ブタジエンゴムあるいはその誘導体とその他ポリアミン化合物またはそれらの変性物からなる硬化剤と、添加によりバインダー表面に親水基が配向し、バインダー樹脂の濡れ性を表面改質できる添加剤成分および促進剤成分からなるものとすることにより、薄層であってもひび割れの発生を防止できることを確認した。 Therefore, as a result of intensive studies by the present inventors, the resin binder is a main agent comprising an epoxy resin mixture obtained by adding a reactive diluent or a non-reactive diluent of monoepoxy and diepoxy to a polyepoxy compound having two or more epoxy groups. A hydrophobic monoamine compound having a long-chain alkyl group having 8 or more carbon atoms, a liquid butadiene rubber having at least one of an amino group and a hydroxyl group carboxyl group at both ends, or a derivative thereof, and other polyamine compounds or modified products thereof By adding a curing agent consisting of an additive component that can orient the hydrophilic surface on the binder surface by addition, and an additive component that can modify the wettability of the binder resin and an accelerator component, it is possible to crack even in a thin layer. It was confirmed that the occurrence can be prevented.
前記エポキシ樹脂混合物からなる主剤は、ポリエポキシ化合物にモノエポキシおよびジエポキシ反応性希釈剤または非反応性希釈剤が全量の５〜２５質量％であることが好ましい。
また、硬化剤の成分は、硬化剤の全量に対して長鎖アルキル基を有する疎水性のモノアミン化合物が２０〜６０質量％、両末端にアミノ基、水酸基カルボキシル基の少なくとも１つを有する液状ブタジエンゴムあるいはその誘導体が１５〜３０質量％、ポリアミン化合物が１５〜４０質量％、バインダー樹脂の濡れ性を表面改質できる添加成分が０．１〜５質量％、促進剤成分が２〜１０質量％であることが好ましい。
As for the main ingredient which consists of the above-mentioned epoxy resin mixture, it is preferred that the monoepoxy and diepoxy reactive diluent or non-reactive diluent is 5 to 25% by mass of the total amount in the polyepoxy compound.
The component of the curing agent is a liquid butadiene having 20 to 60% by mass of a hydrophobic monoamine compound having a long-chain alkyl group based on the total amount of the curing agent and having at least one of an amino group and a hydroxyl group carboxyl group at both ends. 15-30% by mass of rubber or derivative thereof, 15-40% by mass of polyamine compound, 0.1-5% by mass of additive component capable of modifying the wettability of the binder resin, and 2-10% by mass of accelerator component It is preferable that
エポキシ樹脂の混合物である主剤は、ポリエポキシ化合物にモノエポキシおよびジエポキシ系反応性希釈剤または非反応性希釈剤を1種以上添加したものである。
ポリエポキシ化合物の具体例としてはビスフェノールＡとエピクロルヒドリンの縮合物の液体のジまたはポリグリシジルエーテルである。他に、ビスフェノールＦ、フェノールあるいはクレゾールノボラックなどのフェノール系ジまたはポリグリシジルエーテル、ダイマー酸などのポリカルボン酸から得られたジまたはポリグリシジルエーテル、ビスフェノールＡアルキレンオキサイド付加物から得られたジまたはポリグリシジルエーテル、ウレタンまたはＣＴＢＮ変性されたビスフェノールＡ系ジまたはポリグリシジルエーテル、またこれらのポリエポキシ化合物１種または２種以上混合したものを用いることができる。
The main agent, which is a mixture of epoxy resins, is a polyepoxy compound to which one or more monoepoxy and diepoxy reactive diluents or non-reactive diluents are added.
A specific example of the polyepoxy compound is a liquid di- or polyglycidyl ether of a condensate of bisphenol A and epichlorohydrin. In addition, di- or polyglycidyl ethers obtained from phenolic di- or polyglycidyl ethers such as bisphenol F, phenol or cresol novolak, polycarboxylic acids such as dimer acids, di- or poly-obtained from bisphenol A alkylene oxide adducts Glycidyl ether, urethane or CTBN-modified bisphenol A-based di- or polyglycidyl ether, or one or a mixture of two or more of these polyepoxy compounds can be used.
希釈剤としては、２エチルへキシルグリシジルエーテル、クレジルグリシジルエーテルなどのモノエポキシ系反応性希釈剤、１、４ブタンジオールジグリシジルエーテル、1、６ヘキサンジオールジグリシジルエーテルなどのジエポキシ反応性希釈剤、およびベンジルアルコール、ニカノール（フドー（株）製）、ハイゾール（日石化学製）などの非反応性希釈剤などを用いることができる。 Diluents such as mono-epoxy reactive diluents such as 2-ethylhexyl glycidyl ether and cresyl glycidyl ether, and diepoxy reactive diluents such as 1,4 butanediol diglycidyl ether and 1,6 hexanediol diglycidyl ether , And non-reactive diluents such as benzyl alcohol, Nikanol (manufactured by Fudou Co., Ltd.), Hyzol (manufactured by Nisseki Chemical), and the like can be used.
硬化剤成分のＣ８以上のアルキル基を有する疎水性モノアミン化合物は、後述の液状ブタジエンゴムの粘度を下げ、直鎖状の反応性生成物を与え、可撓性を付与する。具体的にはオクチルアミン、デシルアミン、ココナッツアミン、オレイルアミンなどであり常温で液状のＣ１２〜Ｃ１８のモノアミン化合物が望ましい。両末端にアミノ基、水酸基カルボキシル基の少なくとも1つを有する液状ブタジエンゴムは硬化物に靭性を与え、接着の耐久性を向上させる。具体的には末端水酸基を有するＰｏｌｙ ｂｄ Ｒ−４５ＨＴ（出光石油化学製）、またブタジエンとアクリロニトリル共重合物で両末端がカルボキシル基であるＣＴＢＮ，アミノ基のＡＴＢＮ（Ｅｍｅｒａｌｄ ｐｅｒｆｏｒｍａｎｃｅ製）などがある。ポリアミン化合物はジェファーミン（ハンツマン社製）、１３ＢＡＣ（三菱ガス化学社製）、ＮＢＤＡ（三井化学社製）などの誘導体がある。 Hydrophobic monoamine compound having C 8 or more alkyl groups of the curing agent component lowers the viscosity of the liquid butadiene rubber described later, it gives a linear reactive product, imparts flexibility. Specifically, octylamine, decylamine, coconut amine, a monoamine compound of the liquid C 12 -C 18 at room temperature, and the like oleylamine is desirable. Liquid butadiene rubber having at least one of an amino group and a hydroxyl group at both ends imparts toughness to the cured product and improves the durability of adhesion. Specific examples include Poly bd R-45HT (produced by Idemitsu Petrochemical Co., Ltd.) having a terminal hydroxyl group, CTBN having a butadiene and acrylonitrile copolymer, both ends of which are carboxyl groups, and an amino group ATBN (produced by Emerald Performance). Examples of the polyamine compound include derivatives such as Jeffamine (manufactured by Huntsman), 13BAC (manufactured by Mitsubishi Gas Chemical), and NBDA (manufactured by Mitsui Chemicals).
添加剤成分は、分子中に低極性部(主鎖部)と分岐の極性部（親水性基）を併せ持つ構造であり、バインダー塗膜表面の自由エネルギーを上げる効果を示し、水‐バインダー表面で親水基が配向し水の接触角を低下する効果を示す。具体的には、デイスパロンＳＥ１（楠本化成製）、アクリット１ＷＸ（大成ファインケミル製）、ＭＫＣ シリケート（三菱化学製）などである。 The additive component is a structure that has both a low polar part (main chain part) and a branched polar part (hydrophilic group) in the molecule, and has the effect of increasing the free energy of the binder coating surface, The effect is that the hydrophilic group is oriented to lower the contact angle of water. Specifically, Daysalon SE1 (manufactured by Enomoto Kasei), Acryt 1WX (manufactured by Taisei Fine Chemil), MKC silicate (manufactured by Mitsubishi Chemical), and the like.
また促進剤成分としては、サリチル酸、ルイス酸などの酸類、ベンジルジメチルアミンなどの３級アミン類、フェノール類などの熱硬化反応を促進するための反応促進剤、特にビスフェノールＡ，Ｆ，Ｓなどのビスフェノール類は可撓性も付与し、促進効果を併せ持つので本配合の系では有効である。 Examples of the accelerator component include acids such as salicylic acid and Lewis acid, tertiary amines such as benzyldimethylamine, and reaction accelerators for accelerating the thermosetting reaction such as phenols, particularly bisphenol A, F and S. Bisphenols are also effective in the system of this formulation because they impart flexibility and also have a promoting effect.
前記樹脂バインダーは、の含有量は、３０〜５０質量％の範囲である。３０質量％未満では十分な接着力が得られず舗装体の強度が劣り、４５質量％より多いと傷付きやすくなって舗装の耐久性が劣るからである。 The content of the resin binder is in the range of 30 to 50% by mass. If the amount is less than 30% by mass, sufficient adhesive strength cannot be obtained and the strength of the pavement is inferior. If the amount exceeds 45% by mass, the pavement is easily damaged and the durability of the pavement is inferior.
前記原料の残部は砂であり、５〜４０質量％の範囲である。本発明でいう砂とは、真砂土、砂質土、土、砂、火山灰、水砕スラグ、珪砂、微粒硅砂から選択される１または２種以上の無機質粒状物である。粒度や産地等も特に限定はなく、加工性や混合性等を考慮して適宜選択することができる。 The balance of the raw material is sand, which ranges from 5 to 40% by mass. The sand referred to in the present invention is one or more inorganic particulates selected from true sand, sandy soil, earth, sand, volcanic ash, granulated slag, silica sand, and fine dredged sand. The particle size, production area, etc. are not particularly limited, and can be appropriately selected in consideration of processability, mixing properties, and the like.
以上のようにして得られた遮熱性舗装用材料は、コンクリートやアスファルトからなる表層上に、舗装厚みが１〜５ｍｍとなるように舗装されて、遮熱層を形成した遮熱性舗装体として実用に供される。
従来は、路盤上などに形成される弾力舗装層は厚みが約５０ｍｍ前後のものが一般的であり、現場で施工するには特殊な舗装材供給装置と押圧装置等を必要として大規模な工事となっていた。あるいは、工場で所定の大きさに成形した舗装層をトラックで現場へ搬入し、現場で路盤上に敷設する工法もあるが、これも運搬作業が大変であり、また重機が必要で大規模な工事となっていた。
これに対して本発明では、遮熱性舗装用材料を表層上にコテ等で厚みが１〜５ｍｍ程度となるように舗装するのみであり、容易に遮熱層を形成することができる。なお、前記遮熱層は１ｍｍ未満では路面の温度上昇を抑えることが難しく、一方、５ｍｍより厚いと舗装工事が煩雑になるので、１〜５ｍｍの範囲が好ましい。また、この舗装作業は熟練を要せずだれもが簡単に行うことができる。
The heat-shielding pavement material obtained as described above is practically used as a heat-shielding pavement in which a pavement thickness is 1 to 5 mm on a surface layer made of concrete or asphalt to form a heat-shielding layer. To be served.
Conventionally, the elastic pavement layer formed on the roadbed or the like is generally about 50 mm in thickness, and large-scale construction requires special pavement material supply device and pressing device for construction on site. It was. Alternatively, there is a construction method in which a pavement layer molded to a predetermined size at the factory is carried to the site by truck and laid on the roadbed at the site, but this is also difficult to carry and requires heavy machinery and large scale It was under construction.
On the other hand, in the present invention, the heat-shielding pavement material is only paved on the surface layer with a trowel or the like so that the thickness is about 1 to 5 mm, and the heat-shielding layer can be easily formed. If the heat shielding layer is less than 1 mm, it is difficult to suppress the temperature rise of the road surface. On the other hand, if it is thicker than 5 mm, the pavement work becomes complicated, so the range of 1 to 5 mm is preferable. In addition, this pavement work can be easily performed by anyone without skill.
[実施例]
粒径が１〜２ｍｍのコルク粒・・・・・３５質量％
ゴム変性エポキシ樹脂バインダー・・・３６質量％
珪砂５号・・・・・・・・・・・・・・２９質量％
樹脂バインダーは、エポキシ樹脂混合物からなる主剤と、炭素数Ｃ８以上の長鎖アルキル基を有する疎水性のモノアミン化合物と両末端にアミノ基を有する液状ブタジエンゴムからなる硬化剤と、添加剤成分および促進剤成分からなるものである。
上記の原料を混合して遮熱性舗装用材料を作成し、これをコテでアスファルト表層上に舗装して、幅１ｍ、長さ１０ｍ、厚み２ｍｍの遮熱層を形成した。
この遮熱層を室内照射試験で、経過時間と舗装表面の温度の関係を調べた結果を、図１に示す。図１から明らかなように、１８０分経過後の舗装表面の温度は約４７℃であった。
[Example]
Cork grain with a particle size of 1 to 2 mm 35% by mass
Rubber-modified epoxy resin binder: 36% by mass
Silica sand No.5 ... 29 mass%
The resin binder includes a main agent composed of an epoxy resin mixture, a hydrophobic monoamine compound having a long-chain alkyl group having a carbon number of 8 or more, a curing agent composed of a liquid butadiene rubber having amino groups at both ends, an additive component, and It consists of an accelerator component.
A heat shielding pavement material was prepared by mixing the above raw materials, and this was paved on the asphalt surface layer with a trowel to form a heat shielding layer having a width of 1 m, a length of 10 m, and a thickness of 2 mm.
FIG. 1 shows the result of examining the relationship between the elapsed time and the temperature of the pavement surface in an indoor irradiation test of this heat shield layer. As apparent from FIG. 1, the temperature of the pavement surface after about 180 minutes was about 47 ° C.
[比較例]
粒径が２．５〜１３ｍｍの骨材・・・８０質量％
アスファルト・・・・・・・・・・４．５質量％
砂、火山灰、水砕スラグ・・・・１５．５質量％
上記の原料を混合して透水性舗装用材料を作成し、これをアスファルト路盤上に敷設して、幅１ｍ、長さ５ｍ、厚み５０ｍｍの舗装を形成した。
この舗装を室内照射試験で、経過時間と舗装表面の温度の関係を調べた結果を、図１に示す。図１から明らかなように、１８０分経過後の舗装表面の温度は約６０℃であった。
[Comparative example]
Aggregate with a particle size of 2.5-13 mm ... 80% by mass
Asphalt: 4.5% by mass
Sand, volcanic ash, granulated slag ... 15.5% by mass
The raw materials were mixed to prepare a water-permeable pavement material, which was laid on an asphalt roadbed to form a pavement having a width of 1 m, a length of 5 m, and a thickness of 50 mm.
FIG. 1 shows the result of examining the relationship between the elapsed time and the temperature of the pavement surface in an indoor irradiation test. As apparent from FIG. 1, the temperature of the pavement surface after about 180 minutes was about 60 ° C.
実施例からも明らかなように、本発明の遮熱層は比較例の通常のアスファルト舗装に比べて１８０分経過後の舗装表面の温度が１３℃低いことが判明し、太陽の照射により温度が上がることを抑制して１０℃以上低く保てることが確認できた。
従って、本発明の遮熱層を歩道の表面や広場の表面等に形成すれば、路面等の温度が太陽光の照射により温度が上がるのを１０℃以上低く抑えることができ、夏季であっても熱中症患者の発生を抑えてジョギングや各種イベントや歩行者天国等を問題なく実行することができることとなる。更に、透水性、耐摩耗性、弾性および施工性にも優れているので、使用勝手がよく快適な路面を提供できることとなる。
As is clear from the examples, the thermal barrier layer of the present invention was found to have a pavement surface temperature of 13 ° C. lower than that of the normal asphalt pavement of the comparative example after 13 minutes, and the temperature was increased by the sun irradiation. It was confirmed that it could be kept low by 10 ° C. or more by suppressing the rise.
Therefore, if the heat shield layer of the present invention is formed on the surface of a sidewalk, the surface of a plaza, etc., the temperature of the road surface etc. can be kept low by 10 ° C. or lower due to the irradiation of sunlight. In addition, the occurrence of heat stroke patients can be suppressed, and jogging, various events, pedestrian heaven, etc. can be executed without problems. Furthermore, since it is excellent also in water permeability, abrasion resistance, elasticity, and workability, it is possible to provide a comfortable road surface that is easy to use.
Claims (3)
前記樹脂バインダーが、エポキシ基を２個以上有するポリエポキシ化合物に、モノエポキシおよびジエポキシの反応性希釈剤または非反応性希釈剤を添加したエポキシ樹脂混合物からなる主剤と、
炭素数Ｃ ８ 以上の長鎖アルキル基を有する疎水性のモノアミン化合物と両末端にアミノ基、水酸基カルボキシル基の少なくとも1つを有する液状ブタジエンゴムあるいはその誘導体とその他ポリアミン化合物またはそれらの変性物からなる硬化剤と、
添加によりバインダー表面に親水基が配向し、バインダー樹脂の濡れ性を表面改質できる添加剤成分および促進剤成分からなるものであることを特徴とする遮熱性舗装用材料。 As a raw material, a cork granule: 30 to 45% by mass, a resin binder: 30 to 50% by mass, and sand: 5 to 40% by mass , which is a heat shielding pavement material having heat insulation properties,
The resin binder is a main component composed of an epoxy resin mixture obtained by adding a reactive diluent or a non-reactive diluent of monoepoxy and diepoxy to a polyepoxy compound having two or more epoxy groups;
A hydrophobic monoamine compound having a long-chain alkyl group having 8 or more carbon atoms , a liquid butadiene rubber having at least one of an amino group and a hydroxyl group carboxyl group at both ends, or a derivative thereof, and other polyamine compounds or modified products thereof. A curing agent;
A heat-shielding pavement material characterized by comprising an additive component and an accelerator component capable of modifying the wettability of the binder resin by orienting hydrophilic groups on the binder surface .
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