JP2005042439A - Surface covering aggregate for permeable pavement utilizing tile waste material, permeable paving material and paving body utilizing permeable paving material and these manufacturing method - Google Patents
Surface covering aggregate for permeable pavement utilizing tile waste material, permeable paving material and paving body utilizing permeable paving material and these manufacturing method Download PDFInfo
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本発明は、歩道や特に簡易な舗装など歩行用舗装体に使用され、瓦廃材を利用した表面被覆骨材、透水性舗装材料、及び舗装体、並びにこれらの製造方法ないし舗装方法に関する。 The present invention relates to a surface-covered aggregate, a water-permeable pavement material and a pavement, which are used in a walkway such as a sidewalk or a particularly simple pavement, and uses a waste tile material, and a manufacturing method or a pavement method thereof.
歩行用舗装体について、適当な骨材、例えば、土砂や砕石とセメント系ないし樹脂系の固結材・バインダーを混合して、適当に調整した路盤上に敷き均して、舗装体にすることは広く知られ、実施されている。歩行用舗装体は、歩行専用道、遊歩道、歩道橋、公園やスポーツ施設内での散策路や歩行可能な広場、その他建物の周辺舗装部位などを広く含む。特許文献１は、このような簡易舗装のために、自然土を団粒化し、樹脂バインダとしてウレタンプレポリマーを配合混練して透水性の土舗装体塗することが開示している。 For walking pavements, mix appropriate aggregates such as earth and sand and crushed stone with cement-based or resin-based consolidated materials and binders, and lay them on appropriately adjusted roadbeds to make pavements. Is widely known and implemented. Pavements for walking widely include walking paths, promenades, pedestrian bridges, walking paths and walkable plazas in parks and sports facilities, and other paved areas around buildings. Patent Document 1 discloses that for such a simple pavement, natural soil is aggregated, a urethane prepolymer is blended and kneaded as a resin binder, and a water-permeable soil pavement is applied.
他方、建築用に使用された瓦は、建物の取り壊しや屋根葺き替えの際に多量に発生して、産業廃棄物として、埋め立て等で廃棄されている。このような瓦廃材は、回収して再利用することが望まれているが、例えば、特許文献２に開示のように、リサイクルを兼ねて、セメント系コンクリート用の骨材とし利用することが提案されている。この文献には、廃アスファルト廃材の粗骨材等ともに、細骨材として粉砕した瓦廃材を、山砂・川砂の代用として有効活用している。
On the other hand, a large amount of tiles used for construction are generated when a building is demolished or roof is replaced, and is disposed of as industrial waste in landfills. Such tile waste materials are desired to be collected and reused. For example, as disclosed in
また、特許文献３は、骨材とエポキシ樹脂とを混合た透水性舗装について、骨材に、レンガ、瓦、木炭、石炭、固化灰、スラグ、ガラス、汚泥を利用するもので、エポキシ樹脂の粘度調整を行なうことにより、骨材に粒度調整をすることなく、舗装を多孔性にして、透水性を確保しようとするものである。
Moreover,
一般に、瓦は、粘土質材料から成形して高温で焼成した焼結体であり、わが国では、主に、いぶし瓦と釉薬焼き瓦とがあるが、これらは、品質管理もよくなされており、その廃材は、破砕すると、破断面は、磁器質でなくむしろ陶器質を呈して、一定の色調を有し、破片や粒に強度もあるので、これを利用して、歩道用の舗装体に使用して、歩道路を周辺環境にマッチした雰囲気を作り上げることが期待できる。 In general, tiles are sintered bodies that are molded from clay-like materials and fired at high temperatures. In Japan, there are mainly smoldering tiles and glaze-roofing tiles, but these are also well controlled in quality. When the waste material is crushed, the fractured surface has a ceramic color rather than porcelain, has a certain color tone, and has strong strength in fragments and grains. It can be expected that the walking road will create an atmosphere that matches the surrounding environment.
しかし、瓦廃材の色調を利用するには、瓦の破砕片ないし粒を主骨材にして透明な樹脂をバインダーとして固定して舗装体にする必要があり、しかも舗装体自体は、透水性を発現する程度に多孔質で且つ長期にわたり人の歩行に耐える強度を必要としている。主用骨材としての瓦を樹脂系液状の固結材で固めて舗装体に適用するときには、上記の方法で瓦のみの舗装体を造る際には、瓦片は、陶器質で多孔質であって、樹脂系の液又はペーストを吸収するので、砕石や砂を骨材とする樹脂舗装に比して、一般に、固結材樹脂を多量に要し、不経済であった。 However, in order to use the color tone of the tile waste material, it is necessary to fix the transparent resin as a binder with the shredded pieces or grains of the tile as the main aggregate, and the pavement itself has water permeability. It is porous to the extent that it develops and needs to be strong enough to withstand walking for a long time. When the tile as the main aggregate is solidified with a resin-based liquid binder and applied to the pavement, the tile piece must be porcelain and porous. Since the resin-based liquid or paste is absorbed, a large amount of the binder resin is generally required as compared with the resin pavement using crushed stone or sand as an aggregate, which is uneconomical.
さらに重要なことに、瓦は、破砕した多孔質の塊や粒が吸水性を有するので、瓦廃材の出所や保管の態様によっては、多量に水を含むことも多く、瓦破片中に含まれる水分が、合成樹脂系の固結剤の硬化作用に障害を及ぼし、作業性の悪化や、硬化しても舗装体に強度不足を生じるという問題があった。 More importantly, the tiles contain crushed porous lumps and grains that absorb water, so depending on the origin and storage of the tile waste material, it often contains a large amount of water and is contained in the tile fragments. There was a problem that moisture impedes the curing action of the synthetic resin-based caking agent, resulting in deterioration of workability and insufficient strength of the pavement even when cured.
本発明は、上記の問題に鑑みてなされたもので、瓦廃材を利用して、歩行用の舗装材料及び舗装体を作るに際して、瓦廃材が多孔質であることに起因して増加する上記液状固結材の使用量を軽減する方法を提供することを目的とするものである。 The present invention has been made in view of the above problems, and the above-mentioned liquid that increases due to the fact that the waste tile material is porous when making a walking pavement material and a paving body using the waste tile material. It aims at providing the method of reducing the usage-amount of a caking additive.
本発明は、さらに、瓦廃材が含む水分量に実質的に関係なく舗装することのできる舗装材料とその製造方法を提供するものである。 The present invention further provides a paving material that can be paved substantially irrespective of the amount of water contained in the tile waste material, and a method for producing the same.
本発明は、さらに、瓦廃材が含む水分に関係なく舗装することのできる歩行用に舗装する方法と、その舗装体を提供しようとするものである。 The present invention further intends to provide a method for paving for walking, which can be paved regardless of the moisture contained in the tile waste material, and the paving body.
本発明の舗装材料は、粉粒状にした瓦廃材を骨材として、該骨材の表面にポリマー表面処理剤で被覆し、表面を被覆した骨材に固結材を混合して、舗装材料とするものであり、舗装材料を路盤上に敷設して、多孔構造の透水性の舗装体とする。瓦廃材を破砕した骨材は、多数の連通気孔を有する多孔質であるが、ポリマー表面処理剤が、骨材の破砕表面を覆い骨材の気孔の表面開口部を塞ぐので、その後に、液状の固結材を添加混合しても、瓦中の気孔の深部内には固結材が含浸されない。そこで、添加すべき固結材は、舗装体に通気性が保持できる程度で少量でよく経済的であり、これにより舗装体は、多孔構造体にして透水性を発現させ、歩行用道路などに使用される。 The paving material of the present invention comprises a powdered tile waste material as an aggregate, the surface of the aggregate is coated with a polymer surface treatment agent, and a solidified material is mixed into the aggregate coated with the surface. A pavement material is laid on the roadbed to form a porous permeable pavement. The aggregate from which the tile waste is crushed is a porous material having a large number of continuous air holes. However, the polymer surface treatment agent covers the crushed surface of the aggregate and closes the surface opening of the pores of the aggregate. Even if this caking additive is added and mixed, the caking material is not impregnated in the deep part of the pores in the roof tile. Therefore, the amount of caking material to be added is economical as long as the air permeability of the pavement can be maintained, and it is economical because the pavement has a porous structure and exhibits water permeability. used.
本発明は、路盤上に敷設されて歩行用舗装体を構成するための透水性舗装用の表面被覆骨材であって、上記の表面被覆骨材が、粉粒状の瓦廃材を含む骨材と、該骨材表面に被覆し該表面の気孔を封止したポリマー表面処理剤とから成るものを含む。表面被覆骨材は、舗装用原料として利用され、後の敷設時には、該表面被覆骨材を結合して多孔体にする固結材を配合して路盤に敷設される。 The present invention is a surface-coated aggregate for water-permeable pavement for laying on a roadbed to constitute a walking pavement, wherein the surface-covered aggregate includes an aggregate containing powdered tile waste material and And a polymer surface treatment agent covering the surface of the aggregate and sealing pores on the surface. The surface-covered aggregate is used as a raw material for paving, and at the time of subsequent laying, a solidified material that combines the surface-covered aggregate to form a porous body is mixed and laid on the roadbed.
本発明は、路盤上に敷設されて歩行用舗装体を構成するための透水性舗装用の表面被覆骨材の製造方法であって、粉粒状の瓦廃材を含む骨材にポリマー表面処理剤を混練して該骨材表面に被覆して表面被覆骨材とすることを含む。敷設時には、該表面被覆骨材に固結材を配合して路盤に敷設してを結合して多孔体の透水性舗装体にする。 The present invention relates to a method for producing a surface-covered aggregate for water-permeable pavement for laying on a roadbed to constitute a walking pavement, wherein a polymer surface treatment agent is applied to the aggregate including powdered tile waste material. Kneading and covering the surface of the aggregate to form a surface-covered aggregate. At the time of laying, the surface-covered aggregate is mixed with a caking agent and laid on the roadbed to combine them to form a porous permeable pavement.
本発明は、また、路盤上に敷設されて歩行用舗装体を構成する透水性舗装材料であって、透水性舗装材料が、粉粒状の瓦廃材を含む骨材と、該骨材表面に被覆したポリマー表面処理剤と、表面被覆した該瓦廃材を互いに結合して多孔体にする固結材、とから成る透水性舗装材料を含んでいる。本発明は、このような透水性舗装材料が路盤上に敷設されて成る透水性舗装体を含む。 The present invention also relates to a water-permeable pavement material that is laid on a roadbed and constitutes a walking pavement, the water-permeable pavement material covering an aggregate containing powdered tile waste material, and covering the surface of the aggregate A water-permeable pavement material comprising a polymer surface treatment agent and a caking material that binds the surface-covered tile waste material together to form a porous body. The present invention includes a water-permeable pavement in which such a water-permeable pavement material is laid on a roadbed.
本発明は、さらに、路盤上に敷設されて舗装体を構成する透水性舗装材料の製造方法であって、粉粒状の瓦廃材を含む骨材にポリマー表面処理剤を混練して該骨材表面に被覆して表面被覆骨材とすること、及び、表面被覆骨材に多孔体を形成する程度に結合する固結材を配合して混練することから成る透水性舗装材料の製造方法を含む。 The present invention further relates to a method for producing a water-permeable pavement material that is laid on a roadbed and constitutes a pavement, wherein the surface of the aggregate is obtained by kneading a polymer surface treatment agent to an aggregate containing powdered tile waste material. A method for producing a water-permeable pavement material comprising: coating a surface-coated aggregate to form a surface-covered aggregate; and blending and kneading the surface-coated aggregate with a binding material bonded to such a degree that a porous body is formed.
本発明は、透水性舗装材料の上記の製造方法により製造し透水性舗装材料を、路盤上に敷設して透水性舗装体とする透水性舗装体の舗装方法を含む。 The present invention includes a method for paving a water-permeable pavement, which is produced by the above-described method for producing a water-permeable pavement material and is laid on a roadbed to form the water-permeable pavement.
本発明においては、骨材に瓦廃材を含むが、瓦廃材には、建物・家屋の屋根葺き材として使用された瓦を含む。瓦廃材には、瓦製造工場で発生する規格外瓦や破損瓦などの工程廃材を含んでもよく、また、粉粒状の瓦廃材は、瓦を破砕して作る塊状や粒状の破砕屑や微細な粉状にした瓦ダストを含んでもよい。 In the present invention, the aggregate includes waste tile materials, but the tile waste materials include tiles used as roofing materials for buildings and houses. Tile waste materials may include process waste materials such as substandard tiles and damaged tiles generated at tile manufacturing plants.Powdered tile waste materials may be lump or granular crushing waste or fine particles made by crushing tiles. Powdered tile dust may be included.
このような瓦は、いぶし瓦と採油焼き瓦を含み、いぶし瓦では、破砕した粒状物の色調が通常は黒色であり、採油焼き瓦は、通常は赤土風の赤褐色を呈する。これらの色調は、透明の固結剤を利用すれば、瓦廃材を敷き詰めた舗装体にして、舗装体に瓦質の風合い、温かみを与えるものである。 Such tiles include smoldering tiles and oil-collected baked roof tiles. In smoldering roof tiles, the color of the crushed granular material is usually black, and oil-baked baked roof tiles usually exhibit reddish brown reddish brown. If these transparent tones are used, these color tones provide a paving body covered with tile waste material, giving the paving body a texture and warmth.
瓦廃材の寸法形状は、適度に破砕して粉粒状に調製したものが好ましく、寸法が、一辺５０ｍｍ以下、厚み１５ｍｍ以下程度の片状のもの、１５ｍｍ以下の塊、片、粒ないし粉が利用される。瓦片の寸法は、特に、１０ｍｍ〜１ｍｍの寸法範囲が好ましく、特に、瓦の片又は塊は、１０ｍｍ〜５ｍｍ程度の粗い粒状とするのが、舗装体を適度な透水用気孔を供えた多孔体とするために好ましい。この点から、瓦廃材は、粒度分布が狭い範囲に調製されているのが良い。
尤も、瓦廃材には瓦の微粉ないしダストを含むこともでき、瓦製造工程で発生する瓦ダスト等を使用してもよい。これらは、適度に造粒して、上記寸法の塊に団塊化することも可能である。
The size and shape of the tile waste material is preferably suitably crushed and powdered, and the size is a piece having a side of 50 mm or less and a thickness of about 15 mm or less, or a lump, piece, grain or powder of 15 mm or less. Is done. The size of the tile piece is particularly preferably a size range of 10 mm to 1 mm, and in particular, the tile piece or lump has a rough granular shape of about 10 mm to 5 mm, so that the pavement is provided with moderate water-permeable pores. It is preferable for the body. From this point, the tile waste material is preferably prepared in a narrow particle size distribution range.
However, the tile waste material may include tile fine powder or dust, and tile dust generated in the tile manufacturing process may be used. These can be granulated moderately to be agglomerated into the above-mentioned size.
骨材には、他の多孔性の骨材として、セラミック骨材を含んでもよく、例えば、レンガ、タイル、スラグ等等の破砕片が例示できる。レンガには、建築用レンガの他に、窯業用レンガ又は冶金用レンガなどの焼成レンガを含んでも良い。これらレンガも、吸水性の多孔質であり、建築用レンガは例えば赤褐色などに着色を有し、冶金用レンガは白色ないし灰色等で、瓦同様に扱うことができる。スラグは、専ら、製鉄工程から排出されるが、高炉スラグや転炉スラグなどが利用できる。多孔性ではないが、ガラス片も骨材として利用できる。他の骨材には、土砂骨材、例えば、土（例えば、真さ土）、砂（例えば、川砂）、石（例えば砕石）等を含んでも良い。これらの骨材も、上記瓦片と共に、配合される。 The aggregate may include a ceramic aggregate as another porous aggregate, and examples thereof include crush pieces such as bricks, tiles, and slags. In addition to building bricks, the bricks may include fired bricks such as ceramic bricks or metallurgical bricks. These bricks are also water-absorbing porous, and building bricks are colored, for example, reddish brown, and metallurgical bricks are white to gray and can be handled in the same way as roof tiles. Slag is exclusively discharged from the iron making process, but blast furnace slag, converter slag, etc. can be used. Although not porous, glass pieces can also be used as aggregate. Other aggregates may include earth and sand aggregates, such as soil (eg, true earth), sand (eg, river sand), stone (eg, crushed stone), and the like. These aggregates are also blended together with the tile pieces.
これらセラミックと土砂骨材とは、上記瓦片と共に、配合して、骨材とするが、好ましくは、瓦片の色調を損なわない程度に適当量添加される。骨材中の瓦片が、重量で、２０％以上、好ましくは、５０％以上、特に、８０％以上とする。骨材全量が実質上瓦廃材としても良い。 These ceramics and earth and sand aggregates are blended together with the tile pieces to form aggregates, but are preferably added in an appropriate amount so as not to impair the color tone of the tile pieces. The tile piece in the aggregate is 20% or more by weight, preferably 50% or more, and particularly 80% or more. The total amount of aggregate may be substantially waste tile material.
表面処理剤は、瓦廃材の粉粒体の表面を被覆して、表面被覆骨材を形成すものであり、硬化性材料が使用される。表面処理剤は、製造過程では、液体ないしペースト状として混合して塗布され、その一部が、瓦廃材中気孔を通じて含浸され、残部は、表面を被覆して、硬化層を形成し、表面気孔を封止するものである。この表面処理剤は、瓦廃材の内部では、気孔中に残留している水分と共に存在して硬化する。さらに、硬化した表面処理剤は、瓦片を覆うので、その周囲の固結剤による瓦片相互の接合に役立つものである。 A surface treating agent coat | covers the surface of the granular material of a tile waste material, forms a surface covering aggregate, and a sclerosing | hardenable material is used. In the manufacturing process, the surface treatment agent is mixed and applied as a liquid or paste, and a part of the surface treatment agent is impregnated through the pores in the tile waste material, and the remaining part covers the surface to form a hardened layer. Is to be sealed. This surface treating agent is present inside the tile waste material together with moisture remaining in the pores and hardens. Furthermore, since the hardened surface treatment agent covers the tile pieces, it is useful for joining the tile pieces with the surrounding caking agent.
表面処理剤は瓦片中の多数の気孔を被覆又は充填するので、後に固結剤を混合する際には、固結剤への瓦廃材中の残留水による硬化特性への障害を抑制して、硬化した組成物性質を均一化することができ、表面処理剤のある程度の硬化後には、瓦廃材中の気孔を樹脂成分が封止して、その後固結剤添加の際に、気孔中への吸着を少なくして、瓦廃材の接合を向上させる。 Since the surface treatment agent coats or fills a large number of pores in the tile piece, when mixing the caking agent later, it suppresses the obstacles to the hardening characteristics due to the residual water in the tile waste material to the caking agent. The properties of the cured composition can be made uniform, and after the surface treatment agent has been cured to some extent, the pores in the tile waste material are sealed by the resin component, and then into the pores when the caking additive is added. Adsorption of tiles is reduced, and the joining of waste tile materials is improved.
表面処理剤は、硬化性樹脂成分を含み、この樹脂成分には、好ましく、エポキシ、ウレタンなどが利用できる。表面処理剤は、特に好ましくは、親水性または水溶性ウレタンプレポリマーが利用される。このウレタン系成分は、後述のように瓦片に含有する水の存在下でも硬化し、さらに、施工現場での実用上、処理剤の調製と混合などのハンドリングが容易で、揮発溶剤を使用しないの防災の点で優れ、さらに、作業環境への汚染が回避できる点から好ましい。 The surface treatment agent includes a curable resin component, and epoxy, urethane, and the like can be preferably used for this resin component. The surface treatment agent is particularly preferably a hydrophilic or water-soluble urethane prepolymer. This urethane-based component is cured even in the presence of water contained in the tile piece as will be described later. Furthermore, in practical use at the construction site, handling such as preparation and mixing of the treatment agent is easy, and no volatile solvent is used. It is preferable in that it is excellent in terms of disaster prevention, and further, contamination to the work environment can be avoided.
表面処理剤としての親水性または水溶性ウレタンプレポリマーは、基本的には分子末端に２個以上のヒドロキシル基を有し、且つポリオキシエチレン鎖を有する分子量範囲１０００〜２００００のポリエチレンオキサイド化合物と、分子末端に２個以上のイソシアネート基（ＮＣＯ基）を有するポリイソシアネートとを反応させて合成された分子末端にイソシアネート基を残存させたプレポリマーであって、常温で液状またはペースト状を呈する一連の硬化性化合物を含む。 The hydrophilic or water-soluble urethane prepolymer as the surface treatment agent is basically a polyethylene oxide compound having a molecular weight range of 1000 to 20000 having two or more hydroxyl groups at the molecular ends and a polyoxyethylene chain. A series of prepolymers which are synthesized by reacting with a polyisocyanate having two or more isocyanate groups (NCO groups) at the molecular ends, leaving the isocyanate groups at the molecular ends, and exhibiting a liquid or paste form at room temperature Contains curable compounds.
ポリエチレンオキサイド化合物には、例えば、ポリオール類又は、アミン類とエチレンオキサイドとを付和反応させて合成される常温で液状またはペースト状の公知の化合物群を含む。ポリオール類には、例えばエチレングリコール、グリセリン、トリメチロールプロパン、ペンタエリスリトロール、ソルビトール、蔗糖などの公知の化合物が含まれる。また利用可能なアミン類には、エチレンジアミン、ピペラジン等が例示できる。 The polyethylene oxide compound includes, for example, a known compound group in a liquid state or a paste state at normal temperature, which is synthesized by adding and reacting polyols or amines with ethylene oxide. Examples of polyols include known compounds such as ethylene glycol, glycerin, trimethylolpropane, pentaerythritol, sorbitol, and sucrose. Examples of usable amines include ethylenediamine and piperazine.
分子末端に２個以上のイソシアネート基を有する当該ポリイソシアネートには、トリレンジイソシアネート（特に、異性体比で２，４−トリレンジイソシアネートと２，６−トリレンジイソシアネートとの重量比がおおよそ８０：２０であるものが良い）、ジフェニルメタン、４，４’−ジイソシアネート、ナフタレンジイソシアネート等の１種または２種以上が使用される。 The polyisocyanate having two or more isocyanate groups at the molecular terminals includes tolylene diisocyanate (particularly, the weight ratio of 2,4-tolylene diisocyanate to 2,6-tolylene diisocyanate in an isomer ratio is approximately 80: 20 is preferable), or one or more of diphenylmethane, 4,4′-diisocyanate, naphthalene diisocyanate and the like are used.
ウレタンプレポリマーは、水中へ容易に分散し得るようにするために特別な工夫が必要であり、そのためにはポリイソシアネートの反応相手である上記のポリオール類に親水性を付与する必要がある。このために平均分子量１０００〜２００００の範囲に特に制限したポリエチレンオキサイド化合物が好ましく使用される。これらの化合物は、特に、吸水して湿潤した瓦片への適用に好ましく利用される。 The urethane prepolymer requires special measures in order to be easily dispersible in water. For this purpose, it is necessary to impart hydrophilicity to the polyols which are the reaction partners of the polyisocyanate. For this purpose, a polyethylene oxide compound particularly limited to an average molecular weight of 1000 to 20000 is preferably used. These compounds are particularly preferably used for application to tile pieces wetted and wetted.
ポリプロピレンオキサイド化合物やポリブチレンオキサイド化合物は、繰り返し単位中の炭素数の多いと、水との相溶性が損なわれるので、これらを用いて合成されたプレポリマーでは水中分散性が若干低下するが、比較的乾燥した瓦片（含水率５％以下）への適用は十分可能である。 Polypropylene oxide compounds and polybutylene oxide compounds have a large number of carbons in the repeating unit, so the compatibility with water is impaired, so prepolymers synthesized using these compounds have a slight decrease in dispersibility in water. It can be sufficiently applied to dry tile pieces (moisture content of 5% or less).
ウレタンプレポリマーに、ケトン類又はエステル類の如き親水性の有機溶媒の適量を必要に応じて添加することができる。これら親水性の有機溶媒は、ウレタンプレポリマーにさらに親水性を付与するのに有効である。
このように調整したウレタンプレポリマー群は、水中へ分散して乳化すると数分から数十分でそのままゲル化して高含水率の抱水状弾性ゲル体を形成する。
An appropriate amount of a hydrophilic organic solvent such as ketones or esters can be added to the urethane prepolymer as necessary. These hydrophilic organic solvents are effective for further imparting hydrophilicity to the urethane prepolymer.
The urethane prepolymer group adjusted in this manner is gelled as it is for several minutes to several tens of minutes when dispersed and emulsified in water to form a hydrated elastic gel body having a high water content.
瓦片及びその他の多孔質吸水性の骨材には、上記表面処理剤を添加しながら混練し、表面処理骨材となす。表面処理骨材は、形成すべき舗装体に要求される程度の吸水性、保水性、強度及び耐久性に見合うように、表面処理剤と、その後の固結剤と、の配合量が適量にコントロールされる。 The tile pieces and other porous water-absorbing aggregates are kneaded while adding the surface treatment agent to form a surface-treated aggregate. The surface treated aggregate should have an appropriate amount of the surface treatment agent and the subsequent caking agent to meet the water absorption, water retention, strength and durability required for the pavement to be formed. Controlled.
表面処理剤の配合量については、粉砕した瓦廃材を含む骨材の乾燥重量の１００重量部に対して、ウレタンプレポリマーなどの硬化成分が重量比で０．１〜５．０重量部の範囲が好ましい。０．１重量部未満では、硬化成分が少なくて、骨材表面を被覆するには不足し、５．０重量部を越えると、硬化成分が多く、骨材団塊化が多量に発生し、美観上好ましくなく、また作業性が低下する。 About the compounding quantity of a surface treating agent, the range of 0.1-5.0 weight part of hardening components, such as a urethane prepolymer, with respect to 100 weight part of the dry weight of the aggregate containing the ground tile waste material Is preferred. If the amount is less than 0.1 parts by weight, the amount of the hardening component is small and insufficient to cover the surface of the aggregate. If the amount exceeds 5.0 parts by weight, the amount of the hardening component is large, and aggregate agglomeration occurs in large quantities. It is not preferable, and workability is lowered.
上記の瓦廃材を含む骨材に、上記表面処理剤を、混練して硬化させることにより、表面を被覆した、表面被覆骨材が製造できる。表面被覆骨材に、下記の固結材を混合して、舗装材料に調整して、路盤に打設して舗装体にする。 A surface-covered aggregate whose surface is coated can be produced by kneading and curing the surface treatment agent to the aggregate containing the above-mentioned tile waste material. The following solidified material is mixed with the surface covering aggregate, adjusted to a pavement material, and placed on a roadbed to obtain a pavement.
固結剤は、表面処理剤により表面被覆した瓦廃材等の瓦片同士を結合するのに使用されるが、表面処理剤により粉粒状の瓦破片を被覆しているので、多孔質性状からくる吸水(吸油)性及び骨材中に含まれる従来の水分弊害が改善される。そこで、固結剤は、エポキシ樹脂、不飽和ポリエステル樹脂又はウレタンプレポリマー等の熱硬化性樹脂が使用される。また、固結剤には、タール変性樹脂、アスファルト、変性アスファルト、ビニルモノマ等の１種又は２種以上から使用することもできる。 The caking agent is used to bond tile pieces such as tile waste materials that have been surface-coated with a surface treatment agent, but comes from a porous property because the surface treatment agent coats the granular tile fragments. The water absorption (oil absorption) property and the conventional water damage contained in the aggregate are improved. Therefore, a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, or a urethane prepolymer is used as the binder. Moreover, it can also use from 1 type (s) or 2 or more types, such as tar modified resin, asphalt, modified asphalt, and vinyl monomer, as a caking agent.
形成された舗装体が適度な弾性力と耐久性を発揮するには、固結剤は、ウレタンプレポリマーが、特に、好適である。固結剤にウレタンプレポリマーを使用するときは、ウレタンプレポリマーは、その末端未反応ＮＣＯ基が、硬化剤又は水との反応により、ウレタンプレポリマーの重合化を進めて、さらに硬化させるのであるが、末端未反応ＮＣＯ基は、上記化合物中に重量比に対して、１〜１５％の範囲が好ましい。１重量％未満では、硬化成分が少なくて、硬化体としては強度不足となり、１５重量％を越えると、硬化体が発泡して、その発泡体が、瓦廃材で構成する多数の空隙を塞ぐことになり、通水性を阻害すると共に、表面の膨れや反りを生じるので好ましくない。 In order for the formed pavement to exhibit an appropriate elasticity and durability, a urethane prepolymer is particularly suitable as the binder. When a urethane prepolymer is used as a caking agent, the urethane prepolymer has a terminal unreacted NCO group that reacts with a curing agent or water to advance polymerization of the urethane prepolymer and further cure. However, the terminal unreacted NCO group is preferably in the range of 1 to 15% based on the weight ratio in the compound. If it is less than 1% by weight, there are few curing components and the strength of the cured product is insufficient, and if it exceeds 15% by weight, the cured product will foam, and the foam will block a large number of voids composed of the tile waste material. This is not preferable because it impedes water permeability and causes swelling and warping of the surface.
特に、末端未反応ＮＣＯ基は、４〜８％が好ましく、舗装体に必要な強度を確保して且つ、発泡を抑えて、目詰まりの惧れもなく、且つ得られた固結材の樹脂層は、透明で着色がなく、瓦質片の積重の外観をよく表することができる。末端未反応ＮＣＯ基は、特に、５％〜７％とするのが好ましい。 In particular, the terminal unreacted NCO group is preferably 4 to 8%, ensures the strength required for the paving body, suppresses foaming, does not cause clogging, and is a resin of the obtained consolidated material. The layer is transparent and uncolored and can well represent the appearance of the stack of tile pieces. The terminal unreacted NCO group is particularly preferably 5% to 7%.
固結材の配合量は、骨材の乾燥重量に換算して１００重量部に対して、１〜１０重量部含むのが好ましい。固結材１重量部未満では、表面被覆骨剤の相互の固結力が不足して舗装体に所要の強度が得られない。また、１０重量部を越えると、バインダ過剰で、舗装体に多孔体が得られず、取扱いが困難になり、しかも不経済である。 The compounding amount of the consolidated material is preferably 1 to 10 parts by weight with respect to 100 parts by weight in terms of the dry weight of the aggregate. If the amount of the consolidated material is less than 1 part by weight, the mutual strength of the surface-coated bone is insufficient, and the required strength cannot be obtained for the pavement. On the other hand, when the amount exceeds 10 parts by weight, the binder is excessive, a porous body cannot be obtained in the pavement, the handling becomes difficult, and it is uneconomical.
本発明の表面被覆骨材及び舗装材料には、瓦廃材に吸水剤が含まれるのが好ましい。これら表面被覆骨材及び舗装材料の製造方法においては、吸水剤は、表面処理剤の添加配合に先だって、 骨材に、特に、瓦廃材に混合され、これにより、瓦廃材中に含まれる水分を吸収して、除去して、水分が表面処理剤又は固結材の硬化反応を阻害して固化不十分となるのを防止する。 In the surface covering aggregate and the pavement material of the present invention, it is preferable that the tile waste material contains a water absorbing agent. In the method for producing these surface-covered aggregates and pavement materials, the water-absorbing agent is mixed with the aggregates, particularly the tile waste materials, prior to the addition of the surface treatment agent, thereby removing moisture contained in the tile waste materials. Absorb and remove to prevent moisture from becoming insufficiently solidified by inhibiting the curing reaction of the surface treatment agent or the binder.
吸水剤は、粉末状ないし繊維状が好ましい。有機系の吸水剤には、吸水性ポリマーが利用できる。有機系の吸水剤の例には、デンプン−アクリル酸塩共重合体、架橋アクリル酸塩、アクリル酸およびその塩とその他の単量体との共重合体架橋物、イソブチレン−無水マレイン酸共重合体架橋物、ポリビニルアルコール−（メタ）アクリル酸共重合体、変性セルロース誘導体、変性ポリエチレンオキシド、変性ポリビニルアルコール等の公知の化合物が含まれる。 The water absorbing agent is preferably powdery or fibrous. As the organic water-absorbing agent, a water-absorbing polymer can be used. Examples of organic water-absorbing agents include starch-acrylate copolymers, cross-linked acrylates, cross-linked copolymers of acrylic acid and its salts with other monomers, isobutylene-maleic anhydride copolymer Known compounds such as a crosslinked polymer, a polyvinyl alcohol- (meth) acrylic acid copolymer, a modified cellulose derivative, a modified polyethylene oxide, and a modified polyvinyl alcohol are included.
これら吸水剤の配合量は、骨材の、特に、粉砕した瓦廃材等の多孔質骨材の、乾燥重量１００重量部に対して、重量比で、０．０１〜１．０重量部の範囲が好ましく利用される。０．０１重量部未満では、吸水量少なくて、瓦廃材中の余剰水を除去する効果が少なすぎ、１重量部を越えると、吸水剤の体積膨張量が多すぎて舗装表面に露出するため、美観上好ましくない。 The blending amount of these water-absorbing agents is in the range of 0.01 to 1.0 parts by weight in terms of weight ratio to the dry weight of 100 parts by weight of the aggregate, particularly the porous aggregate such as crushed tile waste. Is preferably used. If the amount is less than 0.01 part by weight, the amount of water absorption is small, and the effect of removing excess water in the tile waste material is too small. If the amount exceeds 1 part by weight, the volume expansion amount of the water absorbing agent is too large and exposed to the pavement surface. , Aesthetically undesirable.
吸水剤には、無機吸水剤であってもよく、例えば、石灰水和系の吸水剤でもよい。この例には、石灰質、石膏質、セメント質などを吸水剤として利用できる。石灰質には、生石灰や焼ドロマイト等を含み、石膏系は、焼き石膏を含む。セメント質は、ポルトランドセメントやアルミナセメントなどを主に含む。これらは、いずれも、粉状または粒状で、瓦廃材を含む骨材中に添加され、その水和反応の過程で、瓦廃材に含む水を吸収して取り除く。 The water absorbing agent may be an inorganic water absorbing agent, for example, a lime hydrated water absorbing agent. In this example, calcareous, gypsum, cement and the like can be used as the water absorbing agent. The calcareous material includes quick lime and calcined dolomite, and the gypsum system includes calcined gypsum. The cementum mainly includes Portland cement and alumina cement. These are all powdery or granular and added to the aggregate containing the waste tile material, and absorb and remove the water contained in the waste tile material in the course of the hydration reaction.
無機吸水剤の配合量は、骨材の乾燥重量１００重量部に対して１〜１０重量部が好ましい。無機吸水剤は、上記のポリマー吸水剤と併用されても良い。 As for the compounding quantity of an inorganic water absorbing agent, 1-10 weight part is preferable with respect to 100 weight part of dry weight of an aggregate. The inorganic water absorbing agent may be used in combination with the polymer water absorbing agent.
上記の吸水剤は、瓦廃材を含む多孔質骨材中の含水量を配合前実測して又は外観から予測して、その含水量に基づいて、添加するようにしてもよい。 The above water-absorbing agent may be added based on the water content of the porous aggregate containing the waste tile material, which is actually measured before blending or predicted from the appearance.
本発明の製造方法は、上記の如く、所要量の多孔質骨材に、上記の表面処理剤を、上記配合量で配合して、例えばミキサーを使用して、混練して、瓦廃材表面に付着した表面処理剤を硬化させ、表面被覆骨材とする。吸水剤を適用する場合には、上記表面処理剤の配合に先立って、吸水剤を骨材に配合して混合する。 In the production method of the present invention, as described above, the required amount of porous aggregate is blended with the above-mentioned surface treatment agent in the above-mentioned blending amount, and is kneaded using, for example, a mixer, on the tile waste material surface. The adhering surface treatment agent is cured to obtain a surface-coated aggregate. When applying a water-absorbing agent, the water-absorbing agent is blended with the aggregate prior to blending the surface treatment agent.
このように調製した表面被覆骨材は、各骨材を分離した状態で、次の固結材配合の工程に移ることもできる。または、表面被覆骨材は分離状態で硬化させて、保管することもでき、保管された表面被覆骨材は、必要な時と場所で、輸送して、敷設場所で固結材を配合混練して路盤上の敷設に供される。 The surface-covered aggregate thus prepared can be transferred to the next step of blending the consolidated material in a state where the aggregates are separated. Alternatively, the surface-covered aggregate can be hardened and stored in a separated state, and the stored surface-covered aggregate can be transported at the time and place where necessary, and the mixture is mixed and kneaded at the laying place. To be laid on the roadbed.
固結剤の配合過程は、上記の表面被覆骨材に上記の固結材を上記の配合量で添加配合して、例えばミキサーで、混練して舗装材料とする。舗装材料は、路盤上に適宜敷設されて、路面などの舗装体にする。敷設方法は、路盤上打設して、鏝仕上げや、ローラーにより転圧することもできる。 In the blending process of the caking agent, the caulking material is added and blended with the above-mentioned surface-covered aggregate in the above-mentioned blending amount and, for example, kneaded with a mixer to obtain a paving material. The pavement material is appropriately laid on the roadbed to make a pavement such as a road surface. As for the laying method, it can be placed on the roadbed, and can be finished by culling or rolled with a roller.
路盤は、通常は、破砕した敷石を転圧した路盤を利用するのが、舗装体の安定性と耐久性の点で好ましい。 In general, it is preferable to use a roadbed obtained by rolling a crushed paving stone in terms of stability and durability of the pavement.
表面処理剤による骨材被膜効果の確認試験
表面処理剤Ａとして、水系ウレタンプレポリマー樹脂液に、ポリオキシエチレングリコール−ジイソシアネート系薬剤（中外商工株式会社製、品名「ＡＷバインダー」粘度４０００ＭＰａ・ｓ（２０℃）、）を選び、その２０重量部を水道水８０重量部に溶解して、表面処理剤を調製した。
Confirmation test of aggregate coating effect by surface treatment agent
As the surface treatment agent A, a polyoxyethylene glycol-diisocyanate agent (manufactured by Chugai Shoko Co., Ltd., product name “AW binder” viscosity 4000 MPa · s (20 ° C.)) is selected as the aqueous urethane prepolymer resin liquid, and its weight is 20 A part was dissolved in 80 parts by weight of tap water to prepare a surface treatment agent.
骨材としての瓦には釉薬瓦の廃材をして、予め含水比を１７％に調整してのち、破砕して調製し、０〜３ｍｍ、３〜５ｍｍ、５〜１０ｍｍにそれぞれ篩分級した瓦片をそれぞれ同量づつ混合した。瓦片２個づつそれぞれガラスビーカー内に入れて、瓦片１００重量部に対し、一方のビーカーに前記調製の表面処理剤Ａを１０重量部を加えて速やかに１５分間攪拌した後、実験室内に静置して、表面被覆骨材とした。他方のビーカーには、表面処理剤を添加しなかった。 The tiles used as aggregates are scraps of glaze tiles, adjusted in advance to a water content ratio of 17%, crushed and prepared, and sieved to 0 to 3 mm, 3 to 5 mm, and 5 to 10 mm, respectively. The same amount of each piece was mixed. Place two tile pieces in a glass beaker, add 10 parts by weight of the prepared surface treatment agent A to one beaker for 100 parts by weight of the tile pieces, and quickly stir for 15 minutes. It left still and it was set as the surface covering aggregate. The surface treatment agent was not added to the other beaker.
表面被覆骨材は、静置２時間して後に、固結剤として、ビーカー内にジフェニルメタン−ジイソシアネート系薬剤（中外商工株式会社製、品名「スポルコート樹脂」、ＮＣＯ基８％含有、以下に固結剤Ａとする）を、骨材１００重量部に対し、１０重量部投入して攪拌し供試体を作成した。その硬化性状（経時変化）を確認したところ、表面処理剤添加品は、目視確認において変状は見受けられなかった。 The surface-covered aggregate was allowed to stand for 2 hours, and then, as a caking agent, diphenylmethane-diisocyanate-based drug (manufactured by Chugai Shoko Co., Ltd., product name “Spolcoat resin”, containing 8% NCO group, 10 parts by weight of 100 parts by weight of aggregate) was added and stirred to prepare a specimen. As a result of confirmation of the curing property (change over time), no deformation was found in the surface treatment agent-added product in the visual confirmation.
比較例として、ビーカー内の表面処理剤の無添加の瓦片にも、同様に、上記固結剤Ａを添加して攪拌したところ、表面処理剤Ａ未添加品では表層面が白化し、また固結剤Ａの沈降現象が確認された。
含水比を０％（絶乾状態）に調製した瓦廃材粉砕品を同様の手法にて、試験を行ったところ、表面処理剤を添加した供試体は、目視確認において変状は見受けられなかったが、表面処理剤Ａ未添加供試体では、固結剤Ａが骨材に吸着され安定した硬化体が得られず、またその吸着量が一定でないことから、表層面にまだら状の変色が確認された。
As a comparative example, when the above-mentioned caking agent A was similarly added to the tile pieces without addition of the surface treatment agent in the beaker and stirred, the surface of the surface treatment agent-free product was whitened. A sedimentation phenomenon of the caking agent A was confirmed.
The tile waste material pulverized product prepared at a water content ratio of 0% (absolutely dry) was tested in the same manner. As a result, the specimen added with the surface treatment agent did not show any deformation in the visual confirmation. However, in the specimen to which no surface treatment agent A is added, the solidified agent A is adsorbed to the aggregate and a stable cured body cannot be obtained, and the adsorbed amount is not constant, so that mottled discoloration is confirmed on the surface layer. It was done.
以上の実験から、含水比０％又は１７％のいずれの場合も、未処理骨材に固結剤を添加した供試体は、骨材中に含まれる水分又は多孔質性状に影響され不具合が生じることがあるが、本発明の表面処理を施した供試体は、表面処理剤皮膜が有効に作用していることが確認された。 From the above experiments, in both cases where the water content ratio is 0% or 17%, the specimen in which the caking agent is added to the untreated aggregate is affected by the moisture contained in the aggregate or the porous properties, resulting in defects. In some cases, however, it was confirmed that the surface treatment agent film acts effectively on the specimen subjected to the surface treatment of the present invention.
舗装体の物性実験
個の実施例では、試料１〜４では、表面処理剤を添加し、その効果の確認することとした。骨材は、釉薬瓦を粉砕した瓦片を使用し、０〜３ｍｍ、３〜５ｍｍ、５〜１０ｍｍにそれぞれ分級されたものを同量づつ混合し骨材とした。
Experiment of physical properties of pavement In each example, in samples 1 to 4, a surface treatment agent was added and the effect was confirmed. As the aggregate, tile pieces obtained by pulverizing glaze tiles were used, and those classified into 0 to 3 mm, 3 to 5 mm, and 5 to 10 mm were mixed in the same amount to obtain an aggregate.
比較例の試料５及び６は、従来の樹脂系舗装材料を再現する目的で、固結樹脂単独で舗装体を形成した。
比較例試料５では骨材含水比を７％に、試料６では骨材含水比を１７％に調整し、前述の実施例１で示した固結剤Ａを骨材１００部に対し重量比で７部添加し、１分間混合後にφ５ｃｍ×１０ｃｍに成形し固化させたものをそれぞれ供試体とした。
In
この実施例の試料１から試料４は、骨材含水比を１７％に統一し、実施例１で示した表面処理剤Ａの２０重量％水溶液をそれぞれ骨材１００部に対し重量比で２．５部、５．０部、７．５部及び１０．０部の４水準で添加し、３０分間攪拌後、固結剤Ａを２１部添加・攪拌し１分間混合後に直径５ｃｍ、長さ１０ｃｍに成形し固化させて、それぞれ供試体とした。 Samples 1 to 4 of this example unified the moisture content ratio of the aggregate to 17%, and each of the 20% by weight aqueous solution of the surface treatment agent A shown in Example 1 was 2. 5 parts, 5.0 parts, 7.5 parts and 10.0 parts were added at 4 levels, and after stirring for 30 minutes, 21 parts of caking agent A was added and stirred and mixed for 1 minute, then 5 cm in diameter and 10 cm in length Each sample was molded and solidified into a specimen.
各供試体の養生方法は、気温２３±２℃、湿度５５±５％の恒温恒湿室にて、７日間気中、及び６日間気中＋１日間水中の２種にて行い、ＪＩＳ Ａ１２１６「土の一軸圧縮試験方法」に準じて圧縮試験を行なった。試験の結果は表１に示す。測定項目として７日間気中養生を行った試験項目は圧縮強度と、６日間気中＋１日間水中養生では耐水強度と記した。 Each specimen was cured in a constant temperature and humidity chamber with a temperature of 23 ± 2 ° C. and a humidity of 55 ± 5% in 7 days in the air and 6 days in the air + 1 day in the water. JIS A1216 “ The compression test was performed according to the “uniaxial compression test method for soil”. The results of the test are shown in Table 1. The test items that were subjected to air curing for 7 days as the measurement items were indicated as compressive strength, and water resistant strength for 6 days in air + 1 day water curing.
圧縮強度及び耐水強度は、表面処理剤Ａの添加量に比例した一軸圧縮強さ増す結果となった。これは、瓦片が有する気孔数と一軸圧縮強度が反比例することを示している。 The compressive strength and water resistance strength resulted in an increase in uniaxial compressive strength proportional to the amount of surface treatment agent A added. This indicates that the number of pores of the tile pieces and the uniaxial compressive strength are inversely proportional.
耐水強度試験と同様の方法によりに造った上記実施例及び比較例の試料で、その保水性（乾燥性）の確認試験を行った。試験方法は、５０℃に保たれた定温乾燥機（ヤマト科学株式会社製、品名「DRYING OVEN DK 600」）を用いて、規定時間（乾燥前、２時間後、４時間後、６時間後、２４時間後）乾燥養生を行い、それぞれの規定時間における供試体重量を測定した。乾燥前の供試体重量を１００％とし、規定時間ごとの保水率結果を表１に示す。
A test for confirming the water retention (drying property) was performed on the samples of the above Examples and Comparative Examples prepared by the same method as in the water resistance test. The test method uses a constant temperature dryer maintained at 50 ° C. (manufactured by Yamato Kagaku Co., Ltd., product name “DRYING OVEN DK 600”) for a specified time (before drying, 2 hours, 4 hours, 6 hours, 24 hours later) Dry curing was carried out, and the weight of the specimen at each specified time was measured. Table 1 shows the water retention rate results for each specified time, with the specimen weight before drying as 100%.
図１には、保水率の時間的変化を示すが、２４時間の乾燥時間に着目すると、比較例の試料５と６は、０％の保水率であるのに対し、実施例の試料４は４％の保水率を示しており、表面処理剤の添加量と保水率は比例する結果となった。このことから、骨材中に含まれる水分が気孔を通じて蒸発するが、気孔を表面処理剤にて封止することにより、その蒸発量を低減する効果と表面処理剤自身の抱水効果とがあることが判る。
FIG. 1 shows the temporal change in the water retention rate. When attention is paid to the drying time of 24 hours, the
高含水比骨材
水系ウレタンプレポリマー樹脂液として、ポリオキシエチレングリコール−ジイソシアネート系薬剤（中外商工株式会社製、品名「ＤＲ−Ｕ粒度調整剤」、粘度４００ＭＰａ・ｓ（２０℃）、ＮＣＯ基７％含有）を選び、表面処理剤Ｂとした。
High water content aggregate Aqueous urethane prepolymer resin liquid, polyoxyethylene glycol-diisocyanate chemical (manufactured by Chugai Shoko Co., Ltd., product name “DR-U particle size regulator”, viscosity 400 MPa · s (20 ° C.), NCO group 7 %) Was selected and used as surface treating agent B.
上記の実施例１において示した骨材を、その含水比を３０％に調製し、３個のビーカー内にそれぞれ入れて、そのうち２つのビーカーには、それぞれ、吸水剤（三成工業株式会社製、品名「サンフレッシュＳＴ−５００Ｄ、吸水量約４００ｇ／ｇ（脱イオン水））を骨材１００部に対し重量比で０．０５部添加後、２分間混合し実験室内に静置した。これら吸水剤添加の２つの試料を試料７及び試料９とした。また、吸水剤を添加しなかった試料を試料８とした。
The aggregate shown in Example 1 above was adjusted to a water content ratio of 30% and placed in three beakers, respectively. Two of the beakers each had a water absorbing agent (manufactured by Samsung Electronics Co., Ltd., The product name “Sunfresh ST-500D, water absorption of about 400 g / g (deionized water)” was added in an amount of 0.05 parts by weight to 100 parts of aggregate, then mixed for 2 minutes and allowed to stand in the laboratory. Two samples to which the agent was added were designated as Sample 7 and Sample 9. Further, a sample to which no water-absorbing agent was added was designated as
試料７及び試料８については、静置３０分後に、表面処理剤Ｂを骨材１００部に対し重量比で１．５部を上記ビーカーに投入し、１０分間攪拌後、各ビーカー内にジフェニルメタン−ジイソシアネート系薬剤（中外商工株式会社製「アートロードＤＲ−Ｕバインダー」、ＮＣＯ基６．７％、粘度１８００ＭＰａ・ｓ（２０℃）、以下固結剤Ｂとする）を、各ビーカーにそれぞれ骨材１００部に対し重量比で１０部投入・攪拌し、その性状確認試験を試みた。
他方、試料９は、比較例として、表面処理剤Ｂを添加することなく、上記固結剤Ｂを骨材１００部に対し重量比で１０部投入・攪拌し、その性状確認試験を行なった。
配合と試験結果を表２に示す。
For Sample 7 and
On the other hand, as a comparative example, Sample 9 was charged with 10 parts by weight of the above-mentioned caking additive B with respect to 100 parts of the aggregate without adding surface treating agent B, and a property confirmation test was performed.
The formulation and test results are shown in Table 2.
試料７においては、各項目においていずれも良好な状態であったが、試料８は、吸水剤を含まないので、過剰の水分が影響し、表面処理剤の体積膨張が大きすぎ、過剰な弾性力を持った舗装体となり、また作業性が低下することから、美観上又は性能上において支障をきたす状態であった。試料９においては、表面処理剤を添加していないことから、その性状は上記試料５に酷似した状態であった。
Sample 7 was in a good state in each item, but
以上の結果から、多量の水分を含んだ瓦骨材において、表面処理剤単独での処理は、作業性や過剰な弾性力が発現するなどの不具合が生じ、吸水剤単独での処理は、骨材含水比を低減するだけの効果しか発揮されず、固結剤が骨材中に吸着される作用には、影響しないことが明らかになり、吸水剤と表面処理剤の併用により、両剤の効果が相乗され良好な舗装体が得られることが判明した。 From the above results, in tiled bone materials containing a large amount of moisture, treatment with the surface treatment agent alone causes problems such as workability and excessive elasticity, and treatment with the water absorbent alone It is clear that only the effect of reducing the moisture content of the material is exerted, it does not affect the action of the caking agent adsorbed in the aggregate, and the effect of both agents is achieved by the combined use of the water absorbing agent and the surface treatment agent. As a result, it was found that a good pavement was obtained.
Claims (31)
上記の表面被覆骨材が、粉粒状の瓦廃材を含む骨材と、該骨材表面に被覆し該表面の気孔を封止したポリマー表面処理剤とから成り、
敷設時には、該表面被覆骨材を結合して多孔体にする固結材を配合して路盤に敷設されるべき透水性舗装用の表面被覆骨材。 It is a surface-covered aggregate for water-permeable pavement for laying on a roadbed to constitute a walking pavement,
The surface-covered aggregate is composed of an aggregate containing powdery tile waste material, and a polymer surface treatment agent that covers the aggregate surface and seals pores on the surface,
A surface-covered aggregate for water-permeable pavement that is to be laid on a roadbed by blending a solidified material that combines the surface-covered aggregate to form a porous body when laid.
透水性舗装材料が、粉粒状の瓦廃材を含む骨材と、該骨材表面に被覆したポリマー表面処理剤と、表面被覆した該瓦廃材を互いに結合して多孔体にする固結材、とから成る透水性舗装材料。 A water-permeable pavement material that is laid on a roadbed and constitutes a walking pavement,
The water-permeable pavement material is an aggregate containing powdery tile waste material, a polymer surface treatment agent coated on the surface of the aggregate, and a solidified material that binds the surface-covered tile waste material to each other to form a porous body. A water-permeable pavement material.
粉粒状の瓦廃材を含む骨材にポリマー表面処理剤を混練して該骨材表面に被覆して表面被覆骨材とすることを含み、
敷設時には該瓦廃材を結合して多孔体にする固結材を配合して路盤に敷設されるべき透水性舗装用の表面被覆骨材の製造方法。 A method for producing a surface-covered aggregate for water-permeable pavement for laying on a roadbed to constitute a pavement,
Including kneading a polymer surface treatment agent to aggregate containing powdered tile waste material and covering the aggregate surface to form a surface-coated aggregate,
A method for producing a surface-covered aggregate for water-permeable pavement that is to be laid on a roadbed by combining a caking material that is combined with the tile waste material into a porous body at the time of laying.
粉粒状の瓦廃材を含む骨材にポリマー表面処理剤を混練して該骨材表面に被覆して表面被覆骨材とすること、及び
表面被覆骨材に、多孔体を形成する程度に結合する固結材を配合して混練することから成る透水性舗装材料の製造方法。 In the method of manufacturing a water-permeable pavement material that is laid in a roadbed shape and constitutes a pavement,
A polymer surface treatment agent is kneaded with aggregate containing powdered tile waste material and coated on the surface of the aggregate to form a surface-coated aggregate, and the surface-coated aggregate is bonded to such an extent that a porous body is formed. A method for producing a water-permeable pavement material comprising mixing and kneading a consolidated material.
A method for paving a water-permeable pavement, wherein the water-permeable pavement material produced by the method for producing a water-permeable pavement according to any one of claims 23 to 30 is laid on a roadbed to form a water-permeable pavement.
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