JP2019194402A - Repair material for asphalt pavement or concrete pavement - Google Patents
Repair material for asphalt pavement or concrete pavement Download PDFInfo
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本発明は、アスファルト舗装またはコンクリート舗装用表面補修材及び舗装用表面補修方法に関する。 The present invention relates to a surface repair material for asphalt pavement or concrete pavement and a surface repair method for pavement.
日本において、道路舗装を大別すると、アスファルト系の表層を持つ舗装（アスファルト舗装）とセメントコンクリートを表層に持つ舗装（コンクリート舗装）とに分けられる。各種店舗の駐車場の舗装でも、アスファルト舗装、コンクリート舗装が使用されている。前記アスファルト舗装およびコンクリート舗装は耐久性がよいことが知られており、一般に、設計期間が、アスファルト舗装では１０年、コンクリート舗装では２０年とされている。 In Japan, road pavements can be broadly divided into pavements with asphalt surface (asphalt pavement) and pavements with cement concrete as the surface (concrete pavement). Asphalt pavement and concrete pavement are also used in the parking lots of various stores. The asphalt pavement and the concrete pavement are known to have good durability. Generally, the design period is 10 years for asphalt pavement and 20 years for concrete pavement.
しかしながら、アスファルト舗装およびコンクリート舗装の耐久性は、使用環境に応じて大きく変動する。例えば、自動車の通行量が多かったり、大型自動車が頻繁に通行したりする一般道路や高速道路では、交通荷重の影響が大きくなり、舗装の表面に荒れやひび割れなどの劣化が生じやすい。前記の劣化を無処理のまま放置すると、舗装内部にまでひび割れなどが進行して、舗装が破損する。舗装の破損は、特に自動車が高速で移動する高速道路では、交通事故の原因となったり、自動車に破損片が当たったりして、深刻な事故の要因になる可能性が高いため、舗装表面に劣化が発見された段階で、速やかに補修を施すことが必要になる。 However, the durability of asphalt pavement and concrete pavement varies greatly depending on the use environment. For example, on ordinary roads and highways where there is a large amount of automobile traffic or large automobiles frequently pass, the influence of traffic load increases, and the surface of the pavement is likely to deteriorate such as roughening and cracking. If the deterioration is left untreated, cracks and the like progress inside the pavement, and the pavement is damaged. Pavement damage, especially on highways where automobiles move at high speeds, can cause traffic accidents or hit automobiles, causing serious accidents. When deterioration is discovered, it is necessary to promptly repair it.
前記のような補修方法としては、補修材を、劣化が生じた舗装表面に塗布する方法が知られている。例えば、アスファルト乳剤系のバインダーを用いた表面処理工法に使用される材料として、急硬性改質アスファルト乳剤と骨材とセメントと分解調整剤と水とを含有するマクロサーフェシング混合物が知られている（特許文献１）。しかしながら、マイクロサーフェシング混合物は、常温型の表面処理材料として使用することが可能であるが、所望の効果を奏するには、材料の選定など十分に注意して行う必要がある（特許文献２の段落［０００５］〜［０００７］）。
そこで、熱硬化性樹脂及びアスファルト乳剤を主成分とする特殊改質アスファルト乳剤と、セメントを主成分とする混和材と、骨材、フィラーまたは水のいずれか一種以上とを混合して得られる舗装用表面補修材が知られている（特許文献２）。ただし、前記補修材は、多数の成分を現場で混合する必要があり、現場で簡易に施工するという点で十分とはいえず、改善の余地があった。
As such a repair method, a method of applying a repair material to a pavement surface where deterioration has occurred is known. For example, as a material used in a surface treatment method using an asphalt emulsion-based binder, a macro surfacing mixture containing a rapid-hardening modified asphalt emulsion, an aggregate, cement, a degradation regulator, and water is known. (Patent Document 1). However, the micro surfacing mixture can be used as a room temperature type surface treatment material. However, in order to achieve a desired effect, it is necessary to carefully select the material (see Patent Document 2). Paragraphs [0005] to [0007]).
Therefore, pavement obtained by mixing specially modified asphalt emulsion mainly composed of thermosetting resin and asphalt emulsion, admixture mainly composed of cement, and one or more of aggregate, filler or water. A surface repair material is known (Patent Document 2). However, the repair material needs to be mixed with a large number of components on site, and is not sufficient in terms of simple construction on site, and there is room for improvement.
また、乾燥した骨材と、針入度４０〜１００のアスファルトと、ガラス転移温度が０℃以下の感圧樹脂と、前記アスファルト及び感圧樹脂と相溶性のある高沸点溶剤と、フィラーとからなる、常温舗装合材も知られている（特許文献３）。ただし、前記常温舗装合材は、骨材、アスファルトなどが主成分であり、骨材の比重が大きいため、分離し易く現場での取り扱い性の点で十分とはいえず、改善の余地があった。 Moreover, from dry aggregate, asphalt having a penetration of 40 to 100, a pressure-sensitive resin having a glass transition temperature of 0 ° C. or less, a high-boiling solvent compatible with the asphalt and the pressure-sensitive resin, and a filler The room temperature pavement compound is also known (Patent Document 3). However, the normal temperature pavement composite material is mainly composed of aggregate, asphalt, etc., and the specific gravity of the aggregate is large. Therefore, it is not sufficient in terms of handling at the site because it is easy to separate, and there is room for improvement. It was.
そこで、本発明は、前記事情に鑑み、無機充填材の分散安定性、アスファルト舗装およびコンクリート舗装の表面にある劣化部分への浸透性、ならびに、現場での取り扱い性に優れ、かつ良好な接着強度を有するアスファルト舗装またはコンクリート舗装用の補修材を提供することを目的とする。
また、本発明は、前記の特徴を備えた補修材を用いて、アスファルト舗装またはコンクリート舗装を補修する方法を提供することを目的とする。
Therefore, in view of the above circumstances, the present invention is excellent in dispersion stability of inorganic fillers, permeability to deteriorated portions on the surface of asphalt pavement and concrete pavement, and excellent on-site handling and good adhesive strength. It is an object of the present invention to provide a repair material for asphalt pavement or concrete pavement.
Another object of the present invention is to provide a method for repairing an asphalt pavement or a concrete pavement using a repair material having the above characteristics.
本発明者らは、前記課題を解決するために、種々検討したところ、樹脂組成物の比重と略球状の無機充填材の見掛け比重との比率を特定の範囲に調整することで、軽量で無機充填材の分散安定性に優れ、アスファルト舗装およびコンクリート舗装の表面にある劣化部分への浸透性にも優れ、しかも、現場で製造し易く、無機充填材の分散状態が維持され易く、また、劣化部分に充填させた場合の充填過多が生じにくいなど、現場での取扱い性に優れ、かつ良好な接着強度を有する補修材となることを見出し、本発明を完成させた。 The inventors of the present invention have made various studies in order to solve the above-described problems. As a result, the ratio between the specific gravity of the resin composition and the apparent specific gravity of the substantially spherical inorganic filler is adjusted to a specific range, thereby reducing the weight and the inorganic content. Excellent dispersion stability of the filler, excellent permeability to asphalt pavement and concrete pavement surfaces, easy to manufacture on site, easy to maintain inorganic filler dispersion, and deterioration The present invention has been completed by finding that the repair material has excellent on-site handling properties and good adhesive strength, such as being less likely to be overfilled when the portion is filled.
即ち、本発明の要旨は、
〔１〕樹脂組成物および略球状の無機充填材を含有するアスファルト舗装またはコンクリート舗装用の補修材であって、
前記樹脂組成物がエポキシ樹脂、アクリル樹脂、メタクリル樹脂、ポリウレア樹脂およびウレタン樹脂からなる群より選ばれた樹脂を含み、
前記樹脂組成物の比重に対する前記無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）が０．５／１〜１．６／１であることを特徴とする補修材、
〔２〕前記無機充填材の材質が、フライアッシュ、シラス、ガラスおよびシリカからなる群より選ばれる１種以上である前記〔１〕に記載の補修材、
〔３〕前記補修材の固形分中における樹脂組成物の含有量が５０重量％以上、および
前記無機充填材の含有量が５０重量％以下である
前記〔１〕または〔２〕に記載の補修材、
〔４〕アスファルト舗装またはコンクリート舗装にある補修目的の部分に、前記〔１〕〜〔３〕のいずれかに記載の補修材を注入した後、前記補修材を常温で硬化させる工程を有するアスファルト舗装またはコンクリート舗装の補修方法
に関する。
That is, the gist of the present invention is as follows.
[1] A repair material for asphalt pavement or concrete pavement containing a resin composition and a substantially spherical inorganic filler,
The resin composition includes a resin selected from the group consisting of epoxy resin, acrylic resin, methacrylic resin, polyurea resin and urethane resin,
A repair material, wherein the ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the resin composition (inorganic filler / resin composition) is 0.5 / 1 to 1.6 / 1,
[2] The repair material according to [1], wherein the material of the inorganic filler is at least one selected from the group consisting of fly ash, shirasu, glass, and silica,
[3] The repair according to [1] or [2], wherein the content of the resin composition in the solid content of the repair material is 50% by weight or more, and the content of the inorganic filler is 50% by weight or less. Material,
[4] Asphalt pavement comprising a step of injecting the repair material according to any one of [1] to [3] into a portion for repair in asphalt pavement or concrete pavement, and then curing the repair material at room temperature Or it is related with the repair method of concrete pavement.
本発明の補修材は、無機充填材の分散安定性、ならびに、アスファルト舗装およびコンクリート舗装の表面にある劣化部分への浸透性に優れることから、一般道路、高速道路、駐車場などにおけるアスファルト舗装やコンクリート舗装の表面に生じた荒れやひび割れなどの劣化を速やかに効率よく補修することができる。また、本発明の補修材は、現場で製造し易く、無機充填材の分散状態が維持され易く、劣化部分に充填させた場合の充填過多が生じにくいなど、現場での取扱い性に優れたものであるため、補修作業をより簡便に行うことができる。また、本発明の補修材は、良好な接着強度を有するため、補修部分の強度の低下を改善することができる。 The repair material of the present invention is excellent in dispersion stability of inorganic fillers and permeability to deteriorated portions on the surface of asphalt pavement and concrete pavement, so that it can be used for asphalt pavement on general roads, highways, parking lots, etc. It is possible to quickly and efficiently repair deterioration such as roughening and cracks generated on the surface of concrete pavement. In addition, the repair material of the present invention is easy to manufacture on site, easy to maintain the dispersed state of the inorganic filler, and is excellent in on-site handling, such as being less likely to be overfilled when filled in a deteriorated part. Therefore, the repair work can be performed more easily. Moreover, since the repair material of this invention has favorable adhesive strength, the fall of the intensity | strength of a repair part can be improved.
本発明の補修材は、樹脂組成物および略球状の無機充填材を含有するアスファルト舗装またはコンクリート舗装用の補修材であって、
前記樹脂組成物がエポキシ樹脂、アクリル樹脂、メタクリル樹脂、ポリウレア樹脂およびウレタン樹脂からなる群より選ばれた樹脂を含み、
前記樹脂組成物の比重に対する前記無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）が０．５／１〜１．６／１であることを特徴とする。
The repair material of the present invention is a repair material for asphalt pavement or concrete pavement containing a resin composition and a substantially spherical inorganic filler,
The resin composition includes a resin selected from the group consisting of epoxy resin, acrylic resin, methacrylic resin, polyurea resin and urethane resin,
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the resin composition (inorganic filler / resin composition) is 0.5 / 1 to 1.6 / 1.
本発明に用いられる樹脂組成物とは、常温硬化するタイプの樹脂組成物をいう。具体的には、常温で硬化でき、軽量で無機充填材の分散安定性がよいことから、現場での取り扱い性に優れる観点およびアスファルト舗装やコンクリート舗装の補修部分への浸透性に優れる観点から、エポキシ樹脂、アクリル樹脂、メタクリル樹脂、ポリウレア樹脂またはウレタン樹脂を主成分として含有する樹脂組成物が挙げられる。
前記樹脂は１種または２種以上を混合して用いてもよい。
前記樹脂組成物としては、２液形の市販品を使用することもできる。
The resin composition used in the present invention refers to a resin composition that cures at room temperature. Specifically, it can be cured at room temperature, is lightweight and has good dispersion stability of inorganic fillers, from the viewpoint of excellent on-site handling and excellent permeability to asphalt pavement and repair parts of concrete pavement, Examples of the resin composition include an epoxy resin, an acrylic resin, a methacrylic resin, a polyurea resin, or a urethane resin as a main component.
You may use the said resin 1 type or in mixture of 2 or more types.
As the resin composition, a two-component commercial product can also be used.
前記樹脂組成物は、樹脂の種類に応じて適当な硬化剤、硬化促進剤、反応性希釈剤、重合開始剤、可塑剤、充填材、架橋剤、還元剤、安定剤、過酸化物、開始剤などを含有することができる
本発明の補修材における前記他の成分の含有量としては、本発明の補修材の効果が奏される範囲であればよく、特に限定はない。
The resin composition has an appropriate curing agent, curing accelerator, reactive diluent, polymerization initiator, plasticizer, filler, cross-linking agent, reducing agent, stabilizer, peroxide, initiator depending on the type of resin. The content of the other component in the repair material of the present invention that can contain an agent or the like is not particularly limited as long as the effect of the repair material of the present invention is exhibited.
また、前記樹脂組成物には、樹脂の種類に応じて適当な有機溶剤を用いればよい。
前記樹脂組成物中の有機溶剤の量としては、特に限定はないが、本発明の補修材の粘度が１０，０００ｍＰａ・ｓ以下となるように調整できれば、現場で製造し易いなどの作業性の観点から好ましい。
Moreover, what is necessary is just to use a suitable organic solvent for the said resin composition according to the kind of resin.
The amount of the organic solvent in the resin composition is not particularly limited. However, if the viscosity of the repair material of the present invention can be adjusted to be 10,000 mPa · s or less, the workability such as easy on-site production can be achieved. It is preferable from the viewpoint.
本発明において、前記樹脂組成物が非水系樹脂組成物であることで、セメントを含有する水系タイプの補修材に比べて、アスファルト舗装やコンクリート舗装の表面に生じた荒れやひび割れなどが微小であった場合でも、その微小な部分に浸透して補修することができるなどの利点がある。
したがって、本発明の補修材は、セメントを含有しないタイプの補修材である。
なお、本発明の補修材において、セメントを含有しないとは、セメントを構成成分として含有していないことを意味する。
In the present invention, since the resin composition is a non-aqueous resin composition, roughening and cracks generated on the surface of asphalt pavement and concrete pavement are minute compared to an aqueous type repair material containing cement. Even in the case of repair, there is an advantage that it can be repaired by penetrating the minute part.
Therefore, the repair material of the present invention is a repair material of a type that does not contain cement.
In addition, in the repair material of this invention, not containing cement means not containing cement as a structural component.
本発明に用いられる無機充填材とは、形状が略球状のものであればよく、例えば、バルーンのような中空状、多孔質状、または一部の表面が陥没した形状のものでもよく、特に限定はない。
前記無機充填材の平均粒径としては、特に限定はないが、軽量性、無機充填材の分散安定性、現場での取り扱い性やアスファルト舗装やコンクリート舗装の補修部分への浸透性に優れる観点から、０．０５〜１．５ｍｍの範囲のものが挙げられる。
前記無機充填材の材質としては、軽量性、無機充填材の分散安定性、現場での取り扱い性やアスファルト舗装やコンクリート舗装の補修部分への浸透性に優れる観点から、フライアッシュ、シラス、ガラス、シリカなどが挙げられる。中でも、フライアッシュの一種であるフライアッシュバルーンを含有する補修材の硬化物は、強度が特に優れる。
また、前記無機充填材は、１種類または２種以上を組み合わせて用いてもよい。
The inorganic filler used in the present invention only needs to have a substantially spherical shape, and may be, for example, a hollow shape such as a balloon, a porous shape, or a shape in which a part of the surface is depressed. There is no limitation.
The average particle size of the inorganic filler is not particularly limited, but from the viewpoint of excellent lightness, dispersion stability of the inorganic filler, on-site handling and permeability to asphalt pavement and concrete pavement repair parts. In the range of 0.05 to 1.5 mm.
As the material of the inorganic filler, fly ash, shirasu, glass, from the viewpoint of lightness, dispersion stability of the inorganic filler, on-site handling and excellent permeability to asphalt pavement and repair parts of concrete pavement, Silica etc. are mentioned. Among these, a cured product of a repair material containing a fly ash balloon, which is a type of fly ash, is particularly excellent in strength.
Moreover, you may use the said inorganic filler in combination of 1 type or 2 or more types.
本発明の補修材では、前記樹脂組成物の比重に対する前記無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）が０．５／１〜１．６／１に調整されていることで、軽量で無機充填材の分散安定性がよいことから、現場での取り扱い性に優れ、またアスファルト舗装やコンクリート舗装の補修部分への浸透性に優れ、かつ良好な接着強度を有するという効果が奏される。
前記無機充填材の見掛け比重（単位：ｇ／ｃｍ３）は、ルシャテリエ比重瓶法、簡易アルキメデス法などの公知の方法やピクノメーターなどの比重瓶を用いることによって測定することができる。また、市販品の無機充填材を用いる場合には、商品説明書などに記載されている見掛け比重を用いればよい。無機充填材を２種以上使用する場合、これらの無機充填材の平均の見掛け比重を算出する。樹脂組成物の比重は、密度ともいわれており、ＪＩＳ Ｋ６９１１、Ｋ７１１２やＡＳＴＭ Ｄ７９２などに記載の公知の方法や比重瓶などを用いたり、市販品であれば、商品説明書などに記載されている比重（単位：ｇ／ｃｍ３）を用いればよい。
前記比率は、無機充填材の分散安定性に優れ、および良好な接着強度を有する観点から、０．７／１以上が好ましく、０．８／１以上がより好ましく、０．９／１以上がさらに好ましく、また、１．５／１以下が好ましく、１．４以下がより好ましく、１．３／１以下がさらに好ましい。
なお、前記比率が０．５／１未満または１．６／１を超える場合、樹脂組成物および無機充填材の混合物中で無機充填材が浮き上がるあるいは沈降するなど分離して、本発明の所望の効果が奏され難くなり、また接着強度の点でも好ましくない。
In the repair material of the present invention, the ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the resin composition (inorganic filler / resin composition) is adjusted to 0.5 / 1 to 1.6 / 1. Because of its light weight and good dispersion stability of inorganic fillers, it has excellent on-site handling properties, excellent permeability to asphalt pavement and concrete pavement repair parts, and good adhesive strength. Played.
The apparent specific gravity (unit: g / cm 3 ) of the inorganic filler can be measured by using a known method such as Le Chatelier specific gravity bottle method or simple Archimedes method or a specific gravity bottle such as a pycnometer. In addition, when a commercially available inorganic filler is used, the apparent specific gravity described in a product manual or the like may be used. When two or more inorganic fillers are used, the average apparent specific gravity of these inorganic fillers is calculated. The specific gravity of the resin composition is also referred to as density, and is described in a product manual or the like if a known method or a specific gravity bottle described in JIS K6911, K7112, ASTM D792, or the like is used, or a commercial product. Specific gravity (unit: g / cm 3 ) may be used.
The ratio is preferably 0.7 / 1 or more, more preferably 0.8 / 1 or more, and 0.9 / 1 or more from the viewpoint of excellent dispersion stability of the inorganic filler and good adhesive strength. Furthermore, 1.5 / 1 or less is preferable, 1.4 or less is more preferable, and 1.3 / 1 or less is further more preferable.
In addition, when the ratio is less than 0.5 / 1 or exceeds 1.6 / 1, the inorganic filler is separated in the mixture of the resin composition and the inorganic filler to be lifted or settled, for example. It is difficult to achieve the effect, and it is not preferable in terms of adhesive strength.
本発明の補修材の固形分において、前記樹脂組成物の含有量は、５０重量％以上、および前記無機充填材の含有量は５０重量％以下であることが好ましい。
樹脂組成物の含有量が５０重量％未満、すなわち無機充填材の含有量が３５重量％を超える場合には、充填材過多となり、流動性の低下により補修材の浸透性が低下すると共に接着成分の低下で接着強度が低下し、また、引張り伸び率が低下して、路面の様々な応力に追従できなくなる可能性があり好ましくない。また、樹脂組成物の含有量が８５重量％を超える、すなわち無機充填材の含有量が１５重量％未満の場合には施工単価が高くなると共に、流動性が高くなり、補修箇所への浸透性が高くなりすぎ、過浸透による充填ロスが大きくなるので好ましくない。
前記樹脂組成物の含有量の上限および前記無機充填材の含有量の下限については、得られる補修材が本発明の効果を奏するのであれば特に限定はない。
In the solid content of the repair material of the present invention, the content of the resin composition is preferably 50% by weight or more, and the content of the inorganic filler is preferably 50% by weight or less.
When the content of the resin composition is less than 50% by weight, that is, when the content of the inorganic filler exceeds 35% by weight, the filler is excessive, and the permeability of the repair material is lowered due to the decrease in fluidity and the adhesive component This is not preferable because the adhesive strength decreases due to the decrease in the tensile strength and the tensile elongation decreases, and it may become impossible to follow various stresses on the road surface. In addition, when the content of the resin composition exceeds 85% by weight, that is, when the content of the inorganic filler is less than 15% by weight, the construction unit price becomes high, the fluidity becomes high, and the permeability to the repaired portion is increased. Is too high, and the filling loss due to excessive permeation increases, which is not preferable.
The upper limit of the content of the resin composition and the lower limit of the content of the inorganic filler are not particularly limited as long as the obtained repair material exhibits the effects of the present invention.
また、本発明の補修材では、前記樹脂組成物に加えて、アスファルトを含有していてもよい。前記アスファルトを含有することで、樹脂組成物のたわみ性を向上するため、アスファルト舗装やコンクリート舗装の補修部分へ本発明の補修材を施工すると補修部分が割れにくくなるという効果が奏される。
前記アスファルトの本発明の補修材中における含有量としては、１〜１０重量％であればよい。
Moreover, in the repair material of this invention, in addition to the said resin composition, you may contain asphalt. Since the flexibility of the resin composition is improved by containing the asphalt, when the repair material of the present invention is applied to the repair portion of the asphalt pavement or the concrete pavement, the effect that the repair portion becomes difficult to break is exhibited.
The content of the asphalt in the repair material of the present invention may be 1 to 10% by weight.
本発明の補修材は、予め別々の容器に充填された前記樹脂組成物と前記無機充填材とを混合することで製造することができる。
また、前記樹脂組成物は、樹脂の種類に応じて、２つ以上の容器に分けてもよい。例えば、エポキシ樹脂の場合には、主剤と硬化剤とをそれぞれ異なる容器に充填しておいてもよいし、アクリル樹脂の場合には、Ａ剤とＢ剤とをそれぞれ異なる容器に充填しておいてもよい。
また、本発明の補修材を製造する場所としては、補修の現場でもよいが、特に限定はない。
The repair material of this invention can be manufactured by mixing the said resin composition with which the separate container was beforehand filled, and the said inorganic filler.
The resin composition may be divided into two or more containers depending on the type of resin. For example, in the case of an epoxy resin, the main agent and the curing agent may be filled in different containers, and in the case of an acrylic resin, the A agent and the B agent are filled in different containers. May be.
Moreover, as a place which manufactures the repair material of this invention, although the spot of repair may be sufficient, there is no limitation in particular.
本発明の補修材は、流動性があることで、アスファルト舗装またはコンクリート舗装の表面に発生したひびや荒れの空間内に入り込み易いという利点がある。
具体的には、本発明の補修材の流動性としては、粘度が２，０００〜１０，０００ｍＰａ・ｓ程度あればよい。特に、コンクリート舗装であれば前記粘度は２，０００〜６，０００ｍＰａ・ｓ、アスファルト舗装であれば前記粘度は５，０００〜１０，０００ｍＰａ・ｓであれば、補修し易いという利点がある。
Since the repair material of the present invention has fluidity, it has an advantage that it easily enters a cracked or rough space generated on the surface of asphalt pavement or concrete pavement.
Specifically, the fluidity of the repair material of the present invention may be a viscosity of about 2,000 to 10,000 mPa · s. In particular, in the case of concrete pavement, the viscosity is 2,000 to 6,000 mPa · s, and in the case of asphalt pavement, the viscosity is 5,000 to 10,000 mPa · s.
本発明の補修材を用いるアスファルト舗装またはコンクリート舗装の補修方法としては、アスファルト舗装またはコンクリート舗装にある所望の補修部分に、本発明の補修材を注入した後、前記補修材を常温で硬化させる工程を有する。 As a method for repairing asphalt pavement or concrete pavement using the repair material of the present invention, a step of injecting the repair material of the present invention into a desired repair portion in the asphalt pavement or concrete pavement and then curing the repair material at room temperature Have
前記注入方法としては、樹脂組成物および無機充填材を含むノズル付きの容器の前記ノズルから充填する方法、ツインカートリッジに入れておき、ミキシングノズルで混合しながら吐出して充填する方法などが挙げられる。 Examples of the injection method include a method of filling from a nozzle of a container with a nozzle containing a resin composition and an inorganic filler, a method of filling in a twin cartridge and discharging and mixing while mixing with a mixing nozzle. .
例えば、主剤（又はＡ剤）となる樹脂を含むノズル付き容器１、前記樹脂の硬化剤（またはＢ剤）を含む容器２および無機充填材を含む容器３とを作業現場に運び、前記容器２中の硬化剤（またはＢ剤）を前記容器１に添加・混合した後、前記容器３中の無機充填材を前記容器１に添加・混合して、作業現場で補修材を簡単に製造することができる。
そして、前記ノズル付き容器１のノズルを、所望の補修部分付近にもっていき、ノズル付き容器１を握るなどで押圧を加えることで、前記ノズルから補修材を吐出させて前記補修部分に補修材を充填することができる
For example, a nozzle-equipped container 1 containing a resin as a main agent (or A agent), a container 2 containing a curing agent (or B agent) of the resin and a container 3 containing an inorganic filler are carried to the work site, and the container 2 After adding and mixing the curing agent (or B agent) in the container 1, the inorganic filler in the container 3 is added and mixed into the container 1, and a repair material is easily manufactured at the work site. Can do.
Then, the nozzle of the nozzle-equipped container 1 is brought close to a desired repaired part, and by applying pressure by gripping the nozzle-equipped container 1, the repairing material is discharged from the nozzle and the repairing material is applied to the repaired part. Can be filled
本発明の補修材を用いることで、一般道路、高速道路、駐車場などにおけるアスファルト舗装やコンクリート舗装に生じた、舗装の表面に荒れやひび割れなどの劣化を速やかに補修することができる。また、本発明の補修材は、常温で硬化するタイプのものであり、様々な環境下で効率的に補修を実施することができる。 By using the repair material of the present invention, it is possible to promptly repair deterioration such as roughening or cracking on the surface of the pavement, which has occurred on asphalt pavement or concrete pavement on general roads, highways, parking lots, and the like. The repair material of the present invention is of a type that cures at room temperature, and can be efficiently repaired under various environments.
（実施例１）
主剤として変性エポキシ樹脂２５０ｇおよび硬化剤として変性ポリアミン１００ｇを混合し、次いで無機充填材８０ｇを常温下で混合して、補修材１（本発明品）を作製した。
前記無機充填材としては、略球状のフライアッシュバルーン（平均粒径０．１５ｍｍ）を用いた。
また、変性エポキシ樹脂および硬化剤の混合物（樹脂組成物）の比重に対する無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）は、１．０９／１であった。
Example 1
250 g of a modified epoxy resin as a main agent and 100 g of a modified polyamine as a curing agent were mixed, and then 80 g of an inorganic filler was mixed at room temperature to prepare a repair material 1 (product of the present invention).
As the inorganic filler, a substantially spherical fly ash balloon (average particle size 0.15 mm) was used.
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the mixture of the modified epoxy resin and the curing agent (resin composition) (inorganic filler / resin composition) was 1.09 / 1.
（実施例２）
前記無機充填材として、略球状のフライアッシュバルーン（平均粒径０．１ｍｍ）を１００ｇ用いた以外は、実施例１と同様にして補修材２（本発明品）を作製した。無機充填材と樹脂組成物の重量比は、補修材１と同等の粘性になるよう調整し、得られた数値。
また、変性エポキシ樹脂および硬化剤の混合物（樹脂組成物）の比重に対する無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）は、１．１１／１であった。
(Example 2)
A repair material 2 (product of the present invention) was produced in the same manner as in Example 1 except that 100 g of a substantially spherical fly ash balloon (average particle size: 0.1 mm) was used as the inorganic filler. The weight ratio between the inorganic filler and the resin composition is a numerical value obtained by adjusting the viscosity to be equal to that of the repair material 1.
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the mixture of the modified epoxy resin and the curing agent (resin composition) (inorganic filler / resin composition) was 1.11 / 1.
（実施例３）
前記無機充填材として、略球状のフライアッシュバルーン（平均粒径０．０５ｍｍ）を１００ｇ用いた以外は、実施例１と同様にして補修材３（本発明品）を作製した。無機充填材と樹脂組成物の重量比は、補修材１と同等の粘性になるよう調整し、得られた数値。
また、変性エポキシ樹脂および硬化剤の混合物（樹脂組成物）の比重に対する無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）は、１．１５／１であった。
(Example 3)
Repair material 3 (product of the present invention) was prepared in the same manner as in Example 1 except that 100 g of a substantially spherical fly ash balloon (average particle size 0.05 mm) was used as the inorganic filler. The weight ratio between the inorganic filler and the resin composition is a numerical value obtained by adjusting the viscosity to be equal to that of the repair material 1.
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the mixture of the modified epoxy resin and the curing agent (resin composition) (inorganic filler / resin composition) was 1.15 / 1.
補修材１〜３はいずれも粘度が２，０００〜１０，０００ｍＰａ・ｓ程度に調整されたものであったため、無機充填材の分散性が非常に良好で、製造時に各成分を混合・撹拌し易かった。 Since all of the repair materials 1 to 3 were adjusted to a viscosity of about 2,000 to 10,000 mPa · s, the dispersibility of the inorganic filler was very good, and each component was mixed and stirred during production. It was easy.
また、補修材１〜３を、コンクリート舗装およびアスファルト舗装のひび割れへ注入した場合、ひび割れへの浸透が速やかに行われたことに加えて、充填過多にはならなかった。
現場では、ひび割れ付近の状態を見ながらでは、補修材の必要な充填量がわからないことから、補修材が浸透しなくなるまで充填を続けるが、この場合、必要な充填量以上に過剰に補修材を充填することになる。このように過剰に補修材を充填することを充填過多という。充填過多でひび割れからはみ出した補修材はふき取るなどして取り除いていた。
これに対して、補修材１〜３はいずれもひび割れへの浸透性がよいことから、ひび割れの表面に補修材が見えてきた状態で充填を止めると、それ以上補修材も浸透しないため充填過多にはならかなった。
In addition, when the repair materials 1 to 3 were injected into the cracks of the concrete pavement and the asphalt pavement, in addition to the quick penetration of the cracks, there was no excessive filling.
At the site, it is not possible to know the required filling amount of the repair material while observing the condition near the crack.Therefore, the filling is continued until the repair material does not permeate, but in this case, the repair material will exceed the necessary filling amount. Will be filled. This excessive filling of the repair material is called excessive filling. The repair material that protruded from the crack due to overfilling was removed by wiping it off.
On the other hand, since the repair materials 1 to 3 all have good permeability to cracks, when filling is stopped in a state where the repair material is visible on the surface of the cracks, the repair material does not penetrate any more, so excessive filling. It didn't work out.
また、補修材１〜３は１日程度静置しておいても無機充填材がほとんど沈殿せず、補修材中で分散状態を保っていた。したがって、補修材１〜３は一度製造すると、無機充填材の分散状態が長時間維持される点で、分散安定性が非常に優れていることから、無機充填材の分散状態を維持するために撹拌などを施工直前まで行う必要がなく、現場での作業性に優れるという利点があることがわかる。 Moreover, even if the repair materials 1-3 were left still for about one day, the inorganic filler hardly precipitated, and the dispersion state was maintained in the repair material. Therefore, once the repair materials 1 to 3 are manufactured, the dispersion stability of the inorganic filler is very excellent in that the dispersion state of the inorganic filler is maintained for a long time, so that the dispersion state of the inorganic filler is maintained. It can be seen that there is no need to carry out stirring or the like until immediately before construction, and that there is an advantage of excellent workability on site.
例えば、補修材１を製造後に常温で硬化させた場合、フライアッシュバルーンは、図１に示すように、硬化物中で略均一に分散した状態となった（図１中、右端のサンプル）。なお、図１中、左端のサンプルは対照物であり、エポキシ樹脂からなる硬化物である。 For example, when the repair material 1 was cured at room temperature after production, the fly ash balloon was in a substantially uniformly dispersed state in the cured product as shown in FIG. 1 (the rightmost sample in FIG. 1). In FIG. 1, the leftmost sample is a control object, which is a cured product made of an epoxy resin.
（比較例１）
前記無機充填材として、略球状のガラスビーズ（平均粒径０．３ｍｍ）を５２５ｇ用いた以外は、実施例１と同様にして補修材４（比較品）を作製した。
また、変性エポキシ樹脂および硬化剤の混合物（樹脂組成物）の比重に対する無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）は、２．２／１であった。
(Comparative Example 1)
Repair material 4 (comparative product) was produced in the same manner as in Example 1 except that 525 g of substantially spherical glass beads (average particle size: 0.3 mm) were used as the inorganic filler.
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the mixture of the modified epoxy resin and the curing agent (resin composition) (inorganic filler / resin composition) was 2.2 / 1.
（比較例２）
前記無機充填材として、珪砂を用いた以外は、実施例１と同様にして補修材５（比較品）を作製した。
また、変性エポキシ樹脂および硬化剤の混合物（樹脂組成物）の比重に対する無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）は、２．１８／１であった。
(Comparative Example 2)
Repair material 5 (comparative product) was produced in the same manner as in Example 1 except that silica sand was used as the inorganic filler.
The ratio of the apparent specific gravity of the inorganic filler to the specific gravity of the mixture of the modified epoxy resin and the curing agent (resin composition) (inorganic filler / resin composition) was 2.18 / 1.
補修材４、５を製造後に常温で硬化させた場合、補修材４の硬化物では下方向にガラスビーズが偏った状態となり、下側に行くほどガラスビーズの密度が大きくなっており、樹脂部分と分離した状態になった（図１中、左から２番目のサンプル）。同様に、補修材５の硬化物でも下方向に珪砂が偏った状態となり、下側に行くほど珪砂の密度が大きくなっており、樹脂部分と分離した状態となった（図１中、左から３番目のサンプル）。 When the repair materials 4 and 5 are cured at room temperature after production, the glass beads are biased downward in the cured product of the repair material 4, and the density of the glass beads increases toward the lower side. (The second sample from the left in FIG. 1). Similarly, the cured product of the repair material 5 is also in a state where the silica sand is biased downward, and the density of the silica sand increases toward the lower side, and is separated from the resin portion (from left in FIG. 1). 3rd sample).
以上のことから、本発明品である補修材１〜３は、いずれもコンクリート舗装およびアスファルト舗装の表面に生じた劣化の補修に好適に使用することができることがわかる。 From the above, it can be seen that the repair materials 1 to 3 that are the products of the present invention can be suitably used for repairing deterioration generated on the surfaces of concrete pavement and asphalt pavement.
（試験例２）
アクリル酸エステルおよび１−メチル−１−フェニルエチル＝ヒドロペルオキシドを含有するＡ剤１７５ｇ、アクリル酸エステルを含むＢ剤１７５ｇを混合し、次いでフライアッシュバルーンを８０ｇ常温で混合して、見掛け比重の比率（＝無機充填材の見掛け比重／樹脂組成物の比重）を０．９／１に調整したアクリル樹脂系の補修材６を作製した。
(Test Example 2)
175 g of agent A containing acrylate ester and 1-methyl-1-phenylethyl = hydroperoxide and 175 g of agent B containing acrylate ester were mixed, and then 80 g of fly ash balloon was mixed at room temperature, and the ratio of apparent specific gravity An acrylic resin-based repair material 6 was prepared in which (= apparent specific gravity of the inorganic filler / specific gravity of the resin composition) was adjusted to 0.9 / 1.
（試験例３）
硬化した補修材中における無機充填材の分散安定性について以下の手順で調べた。
(Test Example 3)
The dispersion stability of the inorganic filler in the cured repair material was examined by the following procedure.
（試験体作成及び評価方法）
(1)内寸８×８ｍｍ、高さ３００ｍｍのアルミ製角パイプを用意する。
(2)底面は水平なガラスで塞ぎ、角パイプと外れないようホットメルトで固定する。
(3)２液型の樹脂組成物を用意したが、２液混合時に発熱し、内部に気泡を発生し、正しい数値が測定できない可能性があるため、冷却するため角パイプを水温２０℃、深さ２９０ｍｍの水中に沈める。
(4)樹脂組成物と無機充填材を混合し、空隙の発生がないよう少しずつ角パイプに充填する。
(5)硬化まで24時間静置する。
(6)硬化時に収縮が発生するため、収縮が生じている上部を水平にカットして、上部の断面を収縮部分（凹部）がない水平面にする。
(7)角パイプの上下方向の長さの中心を測り、その中心で水平にカットする。
(8)上部と下部に分かれた角パイプの重量をそれぞれ秤量し、その重量差でフィラーの沈殿の有無を判定する。
(Test specimen preparation and evaluation method)
(1) Prepare an aluminum square pipe with internal dimensions of 8x8mm and height of 300mm.
(2) Close the bottom with horizontal glass and fix it with hot melt so that it does not come off the square pipe.
(3) A two-component resin composition was prepared, but heat was generated when the two components were mixed, bubbles were generated inside, and the correct value could not be measured. Submerged in water at a depth of 290 mm.
(4) The resin composition and the inorganic filler are mixed and filled into the square pipe little by little so that no voids are generated.
(5) Let stand for 24 hours until curing.
(6) Since shrinkage occurs at the time of curing, the upper part where the shrinkage occurs is cut horizontally, and the upper cross-section is made a horizontal surface having no shrinkage part (concave part).
(7) Measure the center of the vertical length of the square pipe and cut horizontally at the center.
(8) The square pipes divided into the upper part and the lower part are weighed, and the presence or absence of filler precipitation is determined based on the difference in weight.
なお、使用した無機充填材を表１、樹脂組成物を表２、および得られた補修材の分散安定性の結果を表３に示す。 Table 1 shows the inorganic filler used, Table 2 shows the resin composition, and Table 3 shows the results of the dispersion stability of the obtained repair material.
前記補修材Ａ、Ｂ、Ｃ、Ｇ、Ｊ、Ｋ、Ｍ、Ｏ、Ｑの結果より、樹脂組成物中の樹脂の種類がエポキシ樹脂、アクリル樹脂またはメタクリル樹脂のいずれであっても、前記見掛け比重の比率０．５／１〜１．６／１の範囲内に調整していることで、重量差が０．１ｇ未満となり、無機充填材が分散して沈降し難い傾向であることがわかる。
一方、前記重量差が０．１ｇを超える見掛け比重の比率が０．５／１よりも小さく調整された補修材Ｈ、Ｉは、例えば、図２に示すように無機充填材が浮き上がっており、また、前記重量差が０．１ｇを超える見掛け比重の比率が１．６よりも大きな補修材Ｄ、Ｅ、Ｆ、Ｌ、Ｎ、Ｐ、Ｒでは図示しないが無機充填材が沈降しているなど、いずれも無機充填材が樹脂組成物と分離し易い傾向であることがわかる。
以上のことから、本発明の補修材において、樹脂組成物の比重に対する前記無機充填材の見掛け比重は０．５／１〜１．６／１に調整されていることで優れた分散安定性が発揮されることがわかる。
なお、補修箇所に伸縮性、可撓性が求められるような補修材を作製する場合には、例えば、補修材Ｑのようにポリウレア系樹脂を用いるかわりに、ウレタン系樹脂を用いてもよい。
From the results of the repair materials A, B, C, G, J, K, M, O, and Q, the apparent appearance is the same regardless of whether the resin in the resin composition is an epoxy resin, an acrylic resin, or a methacrylic resin. By adjusting the specific gravity ratio within the range of 0.5 / 1 to 1.6 / 1, the weight difference is less than 0.1 g, and it is found that the inorganic filler tends to be dispersed and hardly settled. .
On the other hand, the repair material H, I in which the ratio of the apparent specific gravity in which the weight difference exceeds 0.1 g is adjusted to be smaller than 0.5 / 1, for example, the inorganic filler is lifted as shown in FIG. In addition, the repair material D, E, F, L, N, P, and R, in which the apparent specific gravity ratio with the weight difference exceeding 0.1 g is larger than 1.6, is not shown, but the inorganic filler is settled. These show that the inorganic filler tends to be easily separated from the resin composition.
From the above, in the repair material of the present invention, the apparent specific gravity of the inorganic filler with respect to the specific gravity of the resin composition is adjusted to 0.5 / 1 to 1.6 / 1, thereby providing excellent dispersion stability. It can be seen that it is demonstrated.
In the case where a repair material that requires stretchability and flexibility is required at the repair site, for example, a urethane resin may be used instead of the polyurea resin as in the repair material Q.
（試験例４）
試験例３で得られた補修材Ａ〜Ｉについての接着強度を、建研式接着力試験(アタッチメントの材質は鉄、母材はコンクリート板)に基づいて調べた。
結果を表４に示す。
(Test Example 4)
The adhesive strength of the repair materials A to I obtained in Test Example 3 was examined based on the Kenken-type adhesive strength test (the attachment material was iron and the base material was a concrete plate).
The results are shown in Table 4.
表４の結果より、樹脂１を用いた補修材において、前記見掛け比重の比率が０．５／１〜１．６／１に調整されている補修材Ａ、Ｂ、Ｃ、Ｇ、Ｊはいずれも接着強度が４.０以上と高くなっているのに対して、前記見掛け比重の比率が１．６／１よりも高い補修材Ｄ、Ｅ、Ｆ、Ｌや、前記見掛け比重の比率が０．５／１未満の補修材Ｈ、Ｉはいずれも接着強度が４．０未満となっており、前記見掛け比重の比率が０．５／１〜１．６／１に調整されていると補修材の接着強度が高くなることがわかる。
なお、実施例１、２、３で得られた補修材１、２、３は、それぞれ補修材Ａ、Ｂ、Ｃと実質的に同じものである。
From the results of Table 4, in the repair material using the resin 1, the repair materials A, B, C, G, and J in which the ratio of the apparent specific gravity is adjusted to 0.5 / 1 to 1.6 / 1 Although the adhesive strength is as high as 4.0 or higher, the repair materials D, E, F, and L in which the ratio of the apparent specific gravity is higher than 1.6 / 1, and the ratio of the apparent specific gravity is 0. Repair materials H and I of less than 5/1 both have an adhesive strength of less than 4.0, and repair is performed when the apparent specific gravity ratio is adjusted to 0.5 / 1 to 1.6 / 1. It can be seen that the adhesive strength of the material is increased.
The repair materials 1, 2, and 3 obtained in Examples 1, 2, and 3 are substantially the same as the repair materials A, B, and C, respectively.
Claims (4)
前記樹脂組成物がエポキシ樹脂、アクリル樹脂、メタクリル樹脂、ポリウレア樹脂およびウレタン樹脂からなる群より選ばれた樹脂を含み、
前記樹脂組成物の比重に対する前記無機充填材の見掛け比重の比率（無機充填材／樹脂組成物）が０．５／１〜１．６／１であることを特徴とする補修材。 A repair material for asphalt pavement or concrete pavement containing a resin composition and a substantially spherical inorganic filler,
The resin composition includes a resin selected from the group consisting of epoxy resin, acrylic resin, methacrylic resin, polyurea resin and urethane resin,
A repair material, wherein a ratio of an apparent specific gravity of the inorganic filler to a specific gravity of the resin composition (inorganic filler / resin composition) is 0.5 / 1 to 1.6 / 1.
前記無機充填材の含有量が５０重量％以下である
請求項１または２に記載の補修材。 The repair material according to claim 1 or 2, wherein the content of the resin composition in the solid content of the repair material is 50 wt% or more, and the content of the inorganic filler is 50 wt% or less.
Asphalt pavement or concrete pavement repair method for asphalt pavement or concrete pavement, comprising the step of curing the repair material at room temperature after injecting the repair material according to any one of claims 1 to 3 into the asphalt pavement or the concrete pavement. .
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| JP2018088326A JP2019194402A (en) | 2018-05-01 | 2018-05-01 | Repair material for asphalt pavement or concrete pavement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016444A (en) * | 2021-12-15 | 2022-02-08 | 西安邮电大学 | Asphalt concrete bridge deck water seepage disease repairing method |
| CN116835908A (en) * | 2023-06-29 | 2023-10-03 | 中路高科交通检测检验认证有限公司 | Pavement repair composite material and application method thereof |
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2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016444A (en) * | 2021-12-15 | 2022-02-08 | 西安邮电大学 | Asphalt concrete bridge deck water seepage disease repairing method |
| CN114016444B (en) * | 2021-12-15 | 2023-11-28 | 西安邮电大学 | Asphalt concrete bridge deck water seepage disease repairing method |
| CN116835908A (en) * | 2023-06-29 | 2023-10-03 | 中路高科交通检测检验认证有限公司 | Pavement repair composite material and application method thereof |
| CN116835908B (en) * | 2023-06-29 | 2024-01-02 | 中路高科交通检测检验认证有限公司 | Pavement repair composite material and application method thereof |
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