JP5715874B2 - Production method of epoxy asphalt compound in asphalt compound factory - Google Patents

Production method of epoxy asphalt compound in asphalt compound factory Download PDF

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JP5715874B2
JP5715874B2 JP2011096891A JP2011096891A JP5715874B2 JP 5715874 B2 JP5715874 B2 JP 5715874B2 JP 2011096891 A JP2011096891 A JP 2011096891A JP 2011096891 A JP2011096891 A JP 2011096891A JP 5715874 B2 JP5715874 B2 JP 5715874B2
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asphalt
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curing agent
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JP2012229298A (en
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江口 和雄
和雄 江口
雄三 滝澤
雄三 滝澤
弘志 齋藤
弘志 齋藤
悦郎 野田
悦郎 野田
克也 徳光
克也 徳光
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Nippon Road Co Ltd
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本発明は、アスファルト合材製造所におけるエポキシアスファルト合材の新規な製造方法に関する。   The present invention relates to a novel method for producing an epoxy asphalt composite material at an asphalt composite material manufacturing plant.

アスファルト合材製造所で、ビスフェノールA型エポキシ樹脂と硬化剤を混ぜたエポキシアスファルト合材を作ると、エポキシ樹脂と硬化剤が反応して可使時間が短くなり、舗設に支障を生じる。   When an asphalt composite material is produced by mixing an bisphenol A type epoxy resin and a curing agent at an asphalt composite material manufacturing plant, the epoxy resin and the curing agent react with each other to shorten the pot life, thereby hindering paving.

そのためアスファルト合材製造所でアスファルトにエポキシ当量が400ないし4000のエポキシ樹脂を投入した中間混合物を作り、舗設現場でこの中間混合物に、脂肪族鎖状カルボン酸からなる硬化剤を混合する方法が採られている。(特開昭55-145749 参照) For this reason, an asphalt mixture manufacturing plant makes an intermediate mixture in which an epoxy resin having an epoxy equivalent of 400 to 4000 is added to asphalt, and a mixing agent containing an aliphatic chain carboxylic acid is mixed with this intermediate mixture at the paving site. It has been. (See JP 55-145749)

かかる方法は、計量、撹拌等樹脂を直接に手に触れる機会が多く、合材製造者の労働安全衛生で問題があり、合材製造者の熟練を必要とした。   This method has many opportunities to directly touch the resin, such as weighing and stirring, has a problem in occupational safety and health of the material manufacturer, and requires skill of the material manufacturer.

また一般合材製造温度(160℃)で、通常の可使時間3時間を確保すると、初期動的安定度の発現性が遅く、アスファルト合材の舗設後の交通開放までの時間が長く、工事渋滞の原因となっていた。   In addition, when the normal pot life of 3 hours is secured at the general composite material manufacturing temperature (160 ° C), the initial dynamic stability is slow to develop, and the time until traffic opening after paving the asphalt composite material is long. It was the cause of traffic jams.

これらを改良するため、アスファルト合材製造所において、アスファルト合材製造機を用いて、フレーク状に粉砕されたエポキシ当量が400〜3500、融点50℃〜220℃のビスフェノールA型固形エポキシ樹脂と脂肪族アミン(炭素数18、融点35℃)の硬化剤を混ぜたアスファルト合材の製造方法が提案されるようになった。(特開2003-26929 参照) In order to improve these, bisphenol A type solid epoxy resin and fat having an epoxy equivalent of 400 to 3500 and a melting point of 50 to 220 ° C. in an asphalt mixture manufacturing machine using an asphalt mixture manufacturing machine A method for producing asphalt composites mixed with a curing agent of a group amine (carbon number 18, melting point 35 ° C.) has been proposed. (See JP2003-26929)

しかしながら,品質管理上にも幾つかの課題があり、フレーク状に粉砕されたエポキシ当量が400〜600のビスフェノールA型固形エポキシ樹脂のうち、融点の高い樹脂では、一般合材製造温度とミキサ混合時間から溶融しないものがあり、また、融点が70℃以下の低い樹脂の中には、気温が20℃以上になると溶けてべたつく性質があるため、保管や輸送中にフレーク状に粉砕された樹脂が相互にくっついて、大きな固まりとなブロッキング現象を生じるものがある。 However, there are some problems in quality control. Among the bisphenol A type solid epoxy resins having an epoxy equivalent of 400 to 600 pulverized into flakes, in the case of a resin having a high melting point, the general mixture production temperature and mixer mixing may not melt from the time, also, a melting point in the 70 ° C. the following low resin, because of the nature of sticky melts with temperatures equal to or higher than 20 ° C., was ground into flakes during or during transportation and storage resin may stick to each other are those that will lead to large chunks and ing blocking phenomenon.

ブロッキング現象を生じて大きな固まりとなった状態のビスフェノールA型固形エポキシ樹脂を合材製造機に投入してしまうと所定の混合時間(1〜2分間)では、ビスフェノールA型固形エポキシ樹脂が製造機内で均一に分散せず、また所定の混合時間内では溶けずに固まりとなって残るため、混合時間を2〜3倍にしたり、あるいは投入前にブロッキングした樹脂を予めハンマー等で細かくフレーク状に再粉砕するなどの手段を講じるなど、合材の生産性が著しく低下する。 In the bisphenol A type solid epoxy resin in a state in which a major mass occurs blocking phenomenon would put the mixture material manufacturing machine predetermined mixing time (1-2 minutes), bisphenol A type solid epoxy resin to manufacture machine In addition, it does not disperse uniformly and remains in a solid state without melting within a predetermined mixing time, so the mixing time is increased by 2 to 3 times, or the resin blocked before charging is finely flaked with a hammer or the like in advance. Runado take measures, such as reground, it is significantly reduced productivity of the mixture material.

特開昭55−145201号公開公報Japanese Unexamined Patent Publication No. 55-145201 特開昭55−145749号公開公報Japanese Unexamined Patent Publication No. 55-145749 特開2003−26929号公開公報JP 2003-26929 A 特開2003−64156号公開公報Japanese Patent Laid-Open No. 2003-64156 特開2004−92373号公開公報JP 2004-92373 A

本発明は、上述したような一般合材製造温度(160℃)で通常の可使時間を確保できないことによる工事渋滞、フレーク状に粉砕されたエポキシ当量が400〜600、融点70℃以下のビスフェノールA型固形エポキシ樹脂に生じるブロッキング現象、ビスフェノールA型固形エポキシ樹脂と脂肪族一級アミンの硬化剤の反応性の高いことによる硬化時間の速さという課題を以下述べるところにより解決しようとするものである。 The present invention is a construction congestion due to the fact that the normal pot life cannot be ensured at the above-mentioned general composite material production temperature (160 ° C.), bisphenol having an epoxy equivalent of 400 to 600 and a melting point of 70 ° C. or less crushed into flakes. The problem of the blocking phenomenon occurring in the A-type solid epoxy resin and the fast curing time due to the high reactivity between the bisphenol A-type solid epoxy resin and the aliphatic primary amine curing agent is described below. is there.

まずは、アスファルト合材製造所で、アスファルトをバインダーとするアスファルト合材を製造する際に、エポキシ当量400〜600、融点70℃以下のフレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂100重量部に対して、酸化鉄顔料5〜10重量部、滑石粉4〜10重量部を予め混合した主剤と、ヨウ素価が35〜60の脂肪族一級アミンである硬化剤24〜36重量部とを、別々に梱包し、梱包した主剤と硬化剤とをアスファルト合材製造機に投入することを特徴とするエポキシアスファルト合材の製造方法を提供する。 First, when manufacturing an asphalt composite material using asphalt as a binder at an asphalt composite material manufacturing plant, 100 parts by weight of a bisphenol A type solid epoxy resin pulverized into flakes having an epoxy equivalent of 400 to 600 and a melting point of 70 ° C. or less. in contrast, 5-10 parts by weight of iron oxide pigment, a main agent was premixed talcum powder 4-10 parts by weight, and a curing agent 24 to 36 parts by weight of an aliphatic primary amine having an iodine value is 35 to 60, separately A method for producing an epoxy asphalt mixture is provided, wherein the packed main agent and curing agent are charged into an asphalt mixture production machine.

上記において、アスファルトバインダー100重量部に対して、主剤と硬化剤との合計の量は10〜30重量部であることが好ましい。   In the above, the total amount of the main agent and the curing agent is preferably 10 to 30 parts by weight with respect to 100 parts by weight of the asphalt binder.

上記において、梱包は160℃±20℃で融解する容器又はアスファルト合材製造機内に混入したときに粉砕可能である陶磁製容器によることが好ましい。   In the above, the packaging is preferably made of a container that melts at 160 ° C. ± 20 ° C. or a ceramic container that can be pulverized when mixed in an asphalt composite material manufacturing machine.

エポキシ当量が400〜600、融点70℃以下のビスフェノールA型固形エポキシ樹脂の外観は、氷砂糖のように白色、半透明のフレーク状(例:タテ×ヨコ×アツサ=20mm×10mm×5mm程度)に粉砕してあり、使用にもっとも適しているが、気温が20℃以上になると溶けてべたつく性質があるため、保管や輸送中にフレーク状に粉砕された樹脂が相互にくっついて、大きな固まりとなるブロッキング現象を生じるものがある。 The appearance of the bisphenol A type solid epoxy resin having an epoxy equivalent of 400 to 600 and a melting point of 70 ° C. or less is white, translucent flakes like icy sugar (eg, vertical x horizontal x hot = 20 mm x 10 mm x 5 mm) Yes and pulverized, but most suitable for use, because of the nature of sticky melts with temperatures equal to or higher than 20 ° C., the resin was ground into flakes during or during transportation and storage may stick to each other, a large mass Some cause a blocking phenomenon .

請求項1乃至請求項3において、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂100重量部に対して、滑石粉4〜10重量部を混合してフレーク状の樹脂の表面を滑石粉でまんべんなくコーティングされた主剤は、製造されたアスファルト合材の性能を損なうことなく、樹脂のブロッキング現象を防止することができる。また仮に樹脂がブロッキング現象を生じても崩れやすく、割れやすいため、アスファルト合材製造機内で容易に均一に分散され、所定の混合時間内で溶けるIn Claim 1 thru | or 3, 4 to 10 weight part of talc powder is mixed with 100 weight part of bisphenol A type solid epoxy resins ground into flakes, and the surface of the flaky resin is evenly distributed with talc powder. coated base resin, without compromising the performance of the asphalt mixture produced, Ru can prevent blocking phenomenon of the resin. Also, even if the blocking phenomenon occurs, the resin is easily broken and easily broken, so that the resin is easily and uniformly dispersed in the asphalt composite material manufacturing machine and melts within a predetermined mixing time .

フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂に滑石粉を混合すると(フレーク状の)固形エポキシ樹脂の表面は滑石粉でコーティングされる。しかし滑石粉は白色であり、(フレーク状の)固形エポキシ樹脂も白色であることから、(フレーク状の)固形エポキシ樹脂の表面全体が滑石粉でまんべんなくコーティングされたか否かを目視で識別することができない。 When talc powder is mixed with the bisphenol A type solid epoxy resin ground into flakes, the surface of the solid epoxy resin (in the form of flakes) is coated with talc powder. However, since the talc powder is white and the solid epoxy resin (flaky) is also white, it is necessary to visually identify whether the entire surface of the solid epoxy resin (flaky) has been evenly coated with the talc powder. I can't.

請求項1乃至請求項3において、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂100重量部に対して、滑石粉4〜10重量部と同時に酸化鉄顔料5〜10重量部を加えることで、(フレーク状の)固形エポキシ樹脂の表面全体が酸化鉄顔料で着色されるため、目視によりコーティングの効果が識別できる。 In claim 1 to claim 3, by adding 5 to 10 parts by weight of iron oxide pigment simultaneously with 4 to 10 parts by weight of talc powder , to 100 parts by weight of bisphenol A type solid epoxy resin ground into flakes , (flaky) for the entire surface of the solid epoxy resin is colored with iron oxide pigments, can identify the effect of more coating visually.

請求項1乃至請求項3において、予め計量した主剤と硬化剤とを別々に梱包して、合材製造機に投入するので、計量、撹拌等樹脂を直接に手に触れる機会がなく、合材製造者の労働安全衛生上でも問題がなく、合材製造者の熟練を必要としない。   In claim 1 to claim 3, since the pre-measured main agent and curing agent are separately packed and put into the composite material manufacturing machine, there is no opportunity to directly touch the resin such as metering and stirring, and the composite material There is no problem in the occupational safety and health of the manufacturer, and the skill of the compound manufacturer is not required.

請求項2において、アスファルトバインダー100重量部に対して、主剤と硬化剤の合計量を10〜30重量部とすることで、アスファルト合材の靭性、水密性が向上する。   In Claim 2, the toughness and water tightness of asphalt compound material improve by making the total amount of a main ingredient and a hardening | curing agent into 10-30 weight part with respect to 100 weight part of asphalt binders.

請求項3において、主剤と硬化剤の梱包に160℃±20℃で融解する容器や粉砕可能な陶製容器、磁製容器を用いることで、計量、撹拌等樹脂を直接に手に触れる機会がなく,容易にエポキシアスファルト合材が製造でき,エポキシアスファルト合材の性能にも影響を与えない。陶製容器、磁製容器の場合には合材製造機内で粉砕後はエポキシアスファルト合材の骨材となる。   In claim 3, by using a container that melts at 160 ° C. ± 20 ° C., a pulverizable ceramic container, or a magnetic container for packing of the main agent and the curing agent, there is no opportunity to directly touch the resin such as weighing and stirring. , Epoxy asphalt composites can be easily manufactured without affecting the performance of epoxy asphalt composites. In the case of a porcelain container or a magnetic container, it becomes an aggregate of epoxy asphalt composite after being crushed in the composite material manufacturing machine.

本発明に用いられる滑石粉としては、中国産,韓国産,ロシア産等があり、酸化鉄顔料としては、赤色酸化鉄,黒色酸化鉄等がある。
滑石は世界各地で産出するが、国内産は鉄粉などの不純物が多く,白色度が劣るため,高品位の中国産,韓国産,ロシア産が多く使用されている。
As the talc powder used in the present invention, there are Chinese, Korean, Russian and the like, and as the iron oxide pigment, there are red iron oxide, black iron oxide and the like.
Although talc is produced in various parts of the world, domestic products are often used in high-grade Chinese, Korean, and Russian products because of the high level of impurities such as iron powder and poor whiteness.

フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂からなる主剤(エポキシ当量475、融点68℃)とヨウ素価が35の脂肪族一級アミン(例えば牛脂アルキルアミン)からなる硬化剤を主剤10:硬化剤3重量比の割合で別々の低密度ポリエチレン製容器(融点100〜115℃)に封入し、アスファルト(例えばストレートアスファルト、ブローンアスファルト、セミブローンアスファルト、改質アスファルト、トリニダットアスファルト等)と骨材とを合材製造機であるミキサで混練するときに、投入されるアスファルト100重量部に対して、主剤と硬化剤との合計量として、7,14,21,28重量部を投入し,(社)日本道路協会 舗装試験法便覧(3−7−3)に記載されるホイールトラッキング試験方法によってアスファルト合材の耐流動性を評価する指標である初期動的安定度(60℃、3時間養生)と完全硬化時(60℃、6日間養生)の安定度を調べた。
ホイールトラッキング試験方法は,アスファルト合材の試験体寸法は,長さ×幅×厚さ=300mm×300mm×50mm,走行試験輪は,形状が直径200mm,幅50mm,厚さ15mmで,ゴムソリッドタイヤ(JIS硬度84±4(20℃),78±2(60℃),輪荷重は686±10N,車両走行速度42±1回/mm,車両走行距離230±10mmである。動的安定度は,試験開始後45分と60分の15分間における単位変形量当たりの車両通過回数で表す。混練はミキサの室内温度160℃でウエットミキシングを90秒間に統一して行った。このようにして製造されたアスファルト合材は、舗設を3時間後に行うことができた。

Figure 0005715874
アスファルトバインダー100重量部に対して主剤と硬化剤の合計重量7重量部としたアスファルト合材は、初期安定度が2000回/mm、完全硬化時の動的安定度5000回/mmであり,初期動的安定度の目標とした3000回/mm,完全硬化時の動的安定度の目標とした6000回/mmを下回った。また、アスファルトバインダー100重量部に対して主剤と硬化剤の合計重量14重量部としたアスファルト合材は、初期安定度が6000回/mm、完全硬化時の動的安定度が9000回/mmであり、何れも目標値を上回り、良好な耐流動性能が得られた。これらの結果から,各動的安定度の目標値を満足する主剤と硬化剤の合計重量の下限値は、7超〜14重量部の間にあることが判った。 A curing agent composed of a bisphenol A type solid epoxy resin pulverized into flakes (epoxy equivalent 475, melting point 68 ° C.) and an aliphatic primary amine having an iodine value of 35 (for example, beef tallow alkylamine). Enclosed in separate low density polyethylene containers (melting point 100-115 ° C) at a ratio of 3 weight ratio, asphalt (eg straight asphalt, blown asphalt, semi-blown asphalt, modified asphalt, Trinidad asphalt, etc.) and aggregate the when kneaded by a mixer is a cause material making machine, with respect to 100 parts by weight of the asphalt to be introduced, the total amount of a base material and a curing agent, was charged with 7, 14, 21, 28 parts by weight, (Inc. ) Asphalt by the wheel tracking test method described in the Japan Road Association Pavement Test Method Handbook (3-7-3) Initial dynamic stability which is an index for evaluating the flow resistance of the mixed material (60 ° C., 3 hours curing) and at full cure (60 ° C., 6 days curing) was examined for stability.
The wheel tracking test method is asphalt compound specimen size: length x width x thickness = 300mm x 300mm x 50mm, running test wheel is 200mm in diameter, 50mm in width, 15mm in thickness, rubber solid tire (JIS hardness 84 ± 4 (20 ℃), 78 ± 2 (60 ℃), wheel load is 686 ± 10N, vehicle traveling speed 42 ± 1 times / mm, vehicle traveling distance 230 ± 10mm. Dynamic stability is , Expressed as the number of vehicle passes per unit deformation during 45 minutes and 15/60 minutes after the start of the test.Kneading was performed at a mixer room temperature of 160 ° C. with a uniform mixing of 90 seconds. The asphalt mixture thus obtained could be paved after 3 hours.
Figure 0005715874
Asphalt composites with a total weight of 7 parts by weight of the main agent and curing agent for 100 parts by weight of asphalt binder have an initial stability of 2000 times / mm and a dynamic stability of 5000 times / mm when fully cured. The target was 3,000 times / mm, which was the target of dynamic stability, and 6000 times / mm, which was the target of dynamic stability during full curing. In addition, the asphalt mixture with a total weight of 14 parts by weight of the main agent and curing agent with respect to 100 parts by weight of the asphalt binder has an initial stability of 6000 times / mm and a dynamic stability of 9000 times / mm when fully cured. Yes, both exceeded the target value, and good flow resistance was obtained. From these results, it was found that the lower limit of the total weight of the main agent and the curing agent satisfying the target value of each dynamic stability is between more than 7 and 14 parts by weight.

上記実施例において、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂100重量部に対して滑石粉を10重量部を超えて配合すると粉だけの固まりがみられた。また、4重量部未満では、樹脂表面がまんべんなくコーティングされていないため、樹脂のブロッキング現象が生じて大きな固まりができ、ハンマーなどでもその固まりを再粉砕することが困難であった。4重量部と10重量部との間では、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂の表面をまんべんなくコーティングし、ブロッキング防止の効果が発揮された。
このとき、滑石粉4〜10重量部とすることで、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂表面をまんべんなくコーティングし、ブロッキング防止の効果が発揮することができる。また、滑石粉4〜10重量部とすることで仮にブロッキング現象を生じても崩れやすく、割れやすくなることを確認しているため、アスファルト合材製造機内で均一に分散させることも可能となる。
このとき、滑石粉と同時に酸化鉄顔料5〜10重量部を加えることで目視によるコーティングの効果を確認できる。このとき、酸化鉄顔料は、望ましくは5〜10重量部とされていれば、上述の確認を好適に実現することが可能となる。
ちなみに、この滑石粉、酸化鉄顔料におけるそれぞれの含有量の実施例を以下説明する。滑石粉:4.3重量部、酸化鉄顔料:0.7重量部とした実験例1、滑石粉:6重量部、酸化鉄顔料:5重量部とした実験例2、滑石粉:9重量部、酸化鉄顔料:8重量部とした実験例3についてそれぞれ作製し、効果を確認する試験を行った。その結果、何れの実験例においても、上述した効果を好適に実現できることを確認した。
In the said Example, when talc powder was mix | blended over 10 weight part with respect to 100 weight part of bisphenol A type | mold solid epoxy resins grind | pulverized into flakes, the lump of only powder was seen. On the other hand, when the amount is less than 4 parts by weight, the resin surface is not evenly coated, so that a resin blocking phenomenon occurs and a large mass is formed. It is difficult to re-grind the mass with a hammer or the like. Between 4 parts by weight and 10 parts by weight, the surface of the bisphenol A type solid epoxy resin pulverized into flakes was coated evenly , and the effect of preventing blocking was exhibited.
At this time, by setting the talc powder to 4 to 10 parts by weight, the surface of the bisphenol A type solid epoxy resin pulverized into flakes can be coated evenly, and the effect of preventing blocking can be exhibited. Moreover, since it is confirmed that the talc powder is 4 to 10 parts by weight, even if a blocking phenomenon occurs, it is easily broken and easily broken, so that it can be uniformly dispersed in the asphalt mixture manufacturing machine.
At this time, the effect of coating by visual observation can be confirmed by adding 5 to 10 parts by weight of iron oxide pigment simultaneously with talc powder. At this time, if the iron oxide pigment is desirably 5 to 10 parts by weight, the above confirmation can be suitably realized.
Incidentally, examples of the respective contents in this talc powder and iron oxide pigment will be described below. Example 1 with talc powder: 4.3 parts by weight, iron oxide pigment: 0.7 parts by weight, Example 2 with talc powder: 6 parts by weight, iron oxide pigment: 5 parts by weight, talc powder: 9 parts by weight Iron oxide pigments: Each of Experimental Examples 3 with 8 parts by weight was prepared, and a test for confirming the effect was performed. As a result, it was confirmed that the effects described above can be suitably realized in any of the experimental examples.

上記実施例において、ビスフェノールA型固形エポキシ樹脂100重量部に対して硬化剤を24重量部よりも少なく配合した場合には、反応しない主剤が、36重量部よりも多く配合した場合には、反応しない硬化剤が合材中に取り残されて、いずれの場合も初期安定度や完全硬化時の動的安定度が低くなり、耐水、耐久性を著しく低下させることが分った。このため、ビスフェノールA型固形エポキシ樹脂100重量部に対して硬化剤24〜36重量部含有させることが望ましい。 In the above embodiment, when less than 24 parts by weight of the curing agent is blended with 100 parts by weight of the bisphenol A type solid epoxy resin , when the unreacted main component is blended with more than 36 parts by weight, It has been found that the curing agent that is not left behind is left behind in the mixture, and in either case, the initial stability and the dynamic stability at the time of complete curing are lowered, and the water resistance and durability are remarkably lowered. For this reason, it is desirable to contain 24-36 weight part of hardening | curing agents with respect to 100 weight part of bisphenol A type solid epoxy resins.

また、硬化剤において、脂肪族一級アミンのヨウ素価が、35未満の場合(例えば、硬化牛脂アルキルアミン、ステアリルアミン、ラウリルアミン)は、反応が速くなって、目標である3時間の可使時間が確保できず、60(例えば、オレイルアミン)を超えると反応が遅くなりすぎて、可使時間は確保できるがアスファルト合材の目標とする初期動的安定度3000回/mm以上が確保できないことが分った。このため、脂肪族一級アミンのヨウ素価は、35〜60の範囲とされている必要がある。 Further, in the curing agent, when the iodine value of the aliphatic primary amine is less than 35 (for example, cured beef tallow alkylamine, stearylamine, laurylamine) , the reaction becomes faster and the target pot life of 3 hours is obtained. However, if it exceeds 60 (for example, oleylamine) , the reaction becomes too slow and the pot life can be secured, but the initial dynamic stability of 3000 times / mm or more which is the target of asphalt composite material cannot be secured. I understand. For this reason, the iodine value of an aliphatic primary amine needs to be made into the range of 35-60.

上記実施例において、投入されるアスファルト100重量部に対して、主剤と硬化剤との合計量が10重量部以上で,初期動的安定度は3000回/mm以上を示し,また15重量部以上で完全硬化時の動的安定度も10000回/mm以上を満足することができると判った。この結果から,アスファルト100重量部に対して、主剤と硬化剤との合計量を15重量部としたアスファルト合材を舗設し,3時間後に交通開放したが、初期のわだち掘れは生ぜず,良好な平坦性が確保できた。   In the above embodiment, the total amount of the main agent and the curing agent is 10 parts by weight or more with respect to 100 parts by weight of asphalt to be added, the initial dynamic stability is 3000 times / mm or more, and 15 parts by weight or more. It was also found that the dynamic stability upon complete curing can satisfy 10000 times / mm or more. From this result, the asphalt mixture with 15 parts by weight of the main agent and the hardener was paved to 100 parts by weight of asphalt, and traffic was opened after 3 hours, but the initial rutting did not occur and was good. Flatness could be secured.

次に他の実施例のバリエーションについて説明をする。他の実施例においては、フレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂からなる主剤(エポキシ当量475、融点68℃)とヨウ素価が35の脂肪族一級アミン(牛脂アルキルアミン)からなる硬化剤を主剤10:硬化剤3重量比の割合で別々の低密度ポリエチレン製容器(融点100〜115℃)に封入し、アスファルト(例えばストレートアスファルト、ブローンアスファルト、セミブローンアスファルト、改質アスファルト、トリニダットアスファルト等)と骨材とを合材製造機であるミキサで混練するときに、投入されるアスファルト100重量部に対して、主剤と硬化剤との合計量として、5,10,15,30重量部を投入し、初期動的安定度(60℃、3時間養生)と完全硬化時(60℃、6日間養生)の動的安定度を調べた。初期動的安定度と完全硬化時の動的安定度の測定方法は、上述したとおりである。混練はミキサの室内温度160℃でウエットミキシングを90秒間に統一して行った。このようにして製造されたアスファルト合材は、可使時間3時間が確保でき、舗設を行うことができた。結果を下表に示す。

Figure 0005715874
Next, variations of other embodiments will be described. In another embodiment, a curing agent comprising a main agent (epoxy equivalent 475, melting point 68 ° C.) composed of a bisphenol A type solid epoxy resin ground into flakes and an aliphatic primary amine (tallow alkylamine) having an iodine value of 35. In a separate low-density polyethylene container (melting point 100-115 ° C.) at a ratio of 3 parts by weight of the main agent 10 and asphalt (for example, straight asphalt, blown asphalt, semi-blown asphalt, modified asphalt, Trinidad asphalt Etc.) and aggregate are kneaded with a mixer which is a composite material manufacturing machine, and the total amount of the main agent and the curing agent is 5, 10, 15, 30 parts by weight with respect to 100 parts by weight of asphalt to be added. The initial dynamic stability (cured at 60 ° C for 3 hours) and the dynamic stability at full curing (cured at 60 ° C for 6 days) were examined. The method of measuring the initial dynamic stability and the dynamic stability at the time of complete curing is as described above. The kneading was performed at a mixer room temperature of 160 ° C. with wet mixing for 90 seconds. The asphalt composite material produced in this way was able to secure a pot life of 3 hours and could be paved. The results are shown in the table below.
Figure 0005715874

アスファルトバインダー100重量部に対して主剤と硬化剤の合計重量5重量部としたアスファルト合材は、初期安定度、完全硬化時の動的安定度のいずれも低いことが分った。   It has been found that the asphalt mixture having a total weight of 5 parts by weight of the main agent and the curing agent with respect to 100 parts by weight of the asphalt binder has low initial stability and dynamic stability upon complete curing.

なお、本発明は、上記の実施例に限定されるものでないことはもちろんである。   Needless to say, the present invention is not limited to the above-described embodiments.

Claims (3)

アスファルト合材製造所でアスファルトをバインダーとするアスファルト合材を製造する際に、エポキシ当量が400〜600、融点70℃以下のフレーク状に粉砕されたビスフェノールA型固形エポキシ樹脂100重量部に対して、酸化鉄顔料5〜10重量部、滑石粉4〜10重量部を予め混合した主剤と、ヨウ素価が35〜60の脂肪族一級アミンである硬化剤24〜36重量部とを、別々に梱包し、梱包した主剤と硬化剤とをアスファルト合材製造機に投入することを特徴とするアスファルト合材製造所におけるエポキシアスファルト合材の製造方法。 When manufacturing asphalt composites using asphalt as a binder at an asphalt composite manufacturing plant, 100 parts by weight of bisphenol A type solid epoxy resin crushed into flakes having an epoxy equivalent of 400 to 600 and a melting point of 70 ° C. or less , 5-10 parts by weight of iron oxide pigment, a main agent was premixed talcum powder 4-10 parts by weight, and a curing agent 24 to 36 parts by weight of an aliphatic primary amine having an iodine value is 35 to 60, separately packed Then, the packed main agent and the curing agent are put into an asphalt composite material manufacturing machine, and a method for producing an epoxy asphalt composite material at an asphalt composite material manufacturing facility. アスファルトバインダー100重量部に対して、主剤と硬化剤の合計量を10〜30重量部とすることを特徴とする請求項1に記載のアスファルト合材製造所におけるエポキシアスファルト合材の製造方法。   The method for producing an epoxy asphalt mixture in an asphalt mixture production plant according to claim 1, wherein the total amount of the main agent and the curing agent is 10 to 30 parts by weight with respect to 100 parts by weight of the asphalt binder. 梱包は、160℃±20℃で融解する容器、アスファルト合材製造機に投入したとき粉砕可能な陶製又は磁製の容器によることを特徴とする請求項1、又は請求項2に記載のアスファルト合材製造所におけるエポキシアスファルト合材の製造方法。   The packaging is made of a container that melts at 160 ° C ± 20 ° C, or a ceramic or magnetic container that can be pulverized when put into an asphalt composite material manufacturing machine. The asphalt composite according to claim 1 or 2, A method for producing epoxy asphalt composites at a material manufacturing plant.
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