JPS639553B2 - - Google Patents

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Publication number
JPS639553B2
JPS639553B2 JP57068852A JP6885282A JPS639553B2 JP S639553 B2 JPS639553 B2 JP S639553B2 JP 57068852 A JP57068852 A JP 57068852A JP 6885282 A JP6885282 A JP 6885282A JP S639553 B2 JPS639553 B2 JP S639553B2
Authority
JP
Japan
Prior art keywords
asphalt
parts
weight
present
rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP57068852A
Other languages
Japanese (ja)
Other versions
JPS58204203A (en
Inventor
Kentaro Shiojiri
Saburo Wakizaka
Kisho Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toa Doro Kogyo Co Ltd
Original Assignee
Toa Doro Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toa Doro Kogyo Co Ltd filed Critical Toa Doro Kogyo Co Ltd
Priority to JP6885282A priority Critical patent/JPS58204203A/en
Publication of JPS58204203A publication Critical patent/JPS58204203A/en
Publication of JPS639553B2 publication Critical patent/JPS639553B2/ja
Granted legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、高級舗装、簡易舗装、橋面舗装及び
空港舗装等を対象とする再生アスフアルト混合物
の舗装用再生添加組成物の製造方法に関する。 近年、老化したりまた不要となつた廃材のアス
フアルト混合物は、省資源及び省エネルギーの気
運に伴なつてリサイクリング化が見直されてい
る。 アスフアルト混合物を対象とするリサイクリン
グには、大きく分けて中央プラント方式と路上方
式とがある。 中央プラント方式は、特殊な或いは在来型式の
プラントで再生する方式であつて、ストツクヤー
ドに廃材を集積してから、破砕設備で破砕や熱解
砕によりほぐして分級し、新しい骨材、ストレー
トアスフアルトや再生添加剤等の補足材料を添加
して混合する。 また、路上方式は、現場に於て既舗のアスフア
ルト混合物の一部または全部を切削し、該切削廃
材中に不足している骨材、ストレートアスフアル
トや再生添加剤等の補足材料を加えて混合し、そ
れを敷きならし及び転圧している。 この様にストレートアスフアルトや再生添加剤
等を添加した理由としては、既設舗装廃材である
アスフアルト混合物中のアスフアルトに於て、該
アスフアルト中のマルテン留分(n―ペンタン可
溶の極性留分、芳香族留分及び飽和留分からなる
ものを指す。)が酸化或いは重合されてアスフア
ルテン(n―ペンタン不溶分を指す。)に移行す
ることにより、化学組成的に原ストレートアスフ
アルトと比較して相対的にマルテン留分が不足す
るからであり、従つてこのアスフアルトの物理的
性質としては、原ストレートアスフアルトと比較
して進入度、伸度及び軟化点の上昇が観察され
る。 しかしながら、この様な物性を有する老化した
アスフアルト混合物を再生する為に、マルテン留
分が主体である低粘度の再生添加剤を上記中央プ
ラント方式或いは路上方式に於て添加すると、新
しいアスフアルト混合物と比較して高温時に流動
変形現象が起り易くなると共に低温時に摩耗現象
が起り易くなる。 また、老化したアスフアルト混合物を再生する
為にストレートアスフアルトを添加する場合、原
ストレートアスフアルトの物理的性質に復元させ
る為には多量に添加する必要があり、その結果再
生アスフアルト混合物中のアスフアルトが過剰に
なるのに伴つてフラツシユ現象や流動現象が起り
易くなる欠点がある。 従つて、この様にストレートアスフアルトや再
生添加剤等を添加した再生アスフアルト混合物を
舗装用アスフアルト混合物として使用した場合、
一般のアスフアルト混合物に比べて車両等の交通
の繰り返しを受けると、路面に流動変形現象や摩
耗現象が起り易い為、平担な路面状態を長期間維
持することが難しくなる。 本発明は、上記した諸欠点を解決する為になさ
れたものであり、その目的は、廃材の老化程度に
かかわらず広い適用範囲に使用できると共に、再
生アスフアルト混合物に耐久性と流動抵抗性をも
たせることができる舗装用再生添加組成物を提供
することにある。 上記した目的を達成する為、本発明は、石油系
軟化剤100重量部に対してゴムを1〜30重量部と
したことを特徴とする。 以下、本発明について説明すると、本発明は、
次の石油系軟化剤及びゴムの2成分からなる。 1 石油系軟化剤は、原油から常圧蒸留塔により
低沸点留分を分離させ、常圧蒸留塔の底に残る
重質原油を減圧蒸留した留出油であり、更にこ
の留出油は原油の種類、処理工程及び配合によ
りパラフイン系軟化剤、ナフテン系軟化剤及び
芳香族系軟化剤に分類されるが、本発明はこれ
ら全部が使用できる。 この様な石油系軟化剤は、アスフアルト中の
マルテン留分に近い化学組成成分を有してい
る。 2 ゴムは、天然ゴムを初めとする各種合成ゴム
を使用するが、1種または2種以上混合して使
用する。その性状は固形またはラテツクスタイ
プのもので、ゴムのムーニー粘度が10〜100程
度のものがよい結果が得られる。尚、合成ゴム
としては、クロロプレンゴム、スチレン・イソ
プレン共重合体ゴム、ポリイソプレンゴム、、
ポリブタジエンゴム、スチレン・ブタジエン共
重合体ゴム等が用いられる。 本発明の組成物は、次の様にして通常得られ
る。 温度90〜160℃に加熱溶融した所定量の石油系
軟化剤100重量部に対して所定量のゴム例えばゴ
ムラテツクスまたは固形ゴム1〜30重量部を徐々
に添加し、撹拌を続けながら加熱することにより
本発明の舗装用再生添加組成物とする。 この様に得られた本発明を、中央プラント方式
や路上方式等で廃材アスフアルト混合物と使用す
ることによつて、再生アスフアルト混合物ができ
る。 尚、必要に応じて剥離防止剤等を加えてもよ
い。 以下、本発明の実施例について詳細に説明す
る。 先ず、第1実施例に於ては、温度140〜160℃に
加熱溶融した石油系軟化剤100重量部に対し、ク
ロロプレンゴムラテツクスを固形分に換算して30
重量部を加えて撹拌し水分を除去し、均一になる
まで撹拌、溶解させることによつて、本発明に係
る舗装用再生添加組成物を得る。 この様な本発明は、廃材アスフアルト混合物よ
り抽出した老化アスフアルト100重量部に対して
本発明の舗装用再生添加組成物を15重量部添加し
て混合すると、下記の表―1に示す性状が得られ
る。 尚、表―1の比較例は、廃材アスフアルト混合
物より抽出した老化アスフアルト100重量部に対
して鉱物油系芳香族油を15重量部添加して混合し
たものである。 第2実施例に於ては、温度140〜160℃に加熱し
た石油系軟化剤100重量部に対してスチレン・ブ
タジエン共重合体ゴムラテツクスを固形分に換算
して28重量部を加え撹拌し水分を除去し、均一に
なるまで撹拌、溶解させることによつて、本発明
に係る舗装用再生添加組成物を得る。 この様な本発明は、廃材アスフアルトより抽出
した老化アスフアルト100重量部に対して本発明
の舗装用再生添加組成物を16重量部添加して混合
すると、下記の表―1に示す性状が得られる。 第3実施例に於ては、温度140〜160℃に加熱し
た石油系軟化剤100重量部に対してクロロプレン
ゴムラテツクスを固形分に換算して22重量部を加
え撹拌し水分を除去したのちに、ブロツク共重合
体ゴム(SIS型)5重量部を加え撹拌溶解させる
ことによつて、本発明に係る舗装用再生添加組成
物を得る。 この様な本発明は、廃材アスフアルトより抽出
した老化アスフアルト100重量部に対して本発明
の舗装用再生添加組成物を14重量部添加して混合
すると、下記の表―1に示す性状が得られる。
The present invention relates to a method for producing a recycled additive composition for pavement of recycled asphalt mixtures intended for high-grade pavement, simple pavement, bridge surface pavement, airport pavement, etc. In recent years, recycling of aged or unnecessary asphalt mixtures has been reconsidered due to the trend toward resource and energy conservation. Recycling for asphalt mixtures can be broadly divided into central plant methods and on-road methods. The central plant method is a method of recycling in a special or conventional type of plant, in which waste materials are collected in a stockyard, then loosened and classified by crushing or thermal crushing in a crushing facility, and then recycled into new aggregate, straight asphalt, etc. Add and mix supplementary materials such as or regeneration additives. In addition, in the on-site method, part or all of the existing asphalt mixture is cut at the site, and supplementary materials such as aggregate, straight asphalt, and recycled additives are added to the cutting waste and mixed. Then, it is leveled and compacted. The reason for adding straight asphalt and recycled additives in this way is that the maltene fraction (n-pentane soluble polar fraction, aromatic Asphaltene (referring to the fraction insoluble in n-pentane) is oxidized or polymerized and becomes asphaltene (referring to the n-pentane-insoluble fraction), which has a relatively chemical composition compared to the original straight asphalt. This is because the maltene fraction is insufficient, and therefore, as for the physical properties of this asphalt, increases in penetration, elongation, and softening point are observed compared to the original straight asphalt. However, in order to regenerate an aged asphalt mixture with such physical properties, if a low viscosity regeneration additive mainly composed of maltene fraction is added in the central plant method or on-the-road method, it will cause a decrease in the quality of the asphalt mixture compared to a new asphalt mixture. As a result, flow deformation phenomena are more likely to occur at high temperatures, and wear phenomena are more likely to occur at low temperatures. Furthermore, when straight asphalt is added to regenerate an aged asphalt mixture, it is necessary to add a large amount to restore the physical properties of the original straight asphalt, and as a result, asphalt in the recycled asphalt mixture becomes excessive. There is a drawback that flashing and flow phenomena are more likely to occur as the temperature increases. Therefore, when a recycled asphalt mixture containing straight asphalt or recycled additives is used as an asphalt mixture for paving,
Compared to general asphalt mixtures, when subjected to repeated traffic such as vehicles, flow deformation and wear phenomena are more likely to occur on the road surface, making it difficult to maintain a flat road surface for a long period of time. The present invention has been made to solve the above-mentioned drawbacks, and its purpose is to provide recycled asphalt mixtures with durability and flow resistance, while being usable in a wide range of applications regardless of the degree of aging of waste materials. An object of the present invention is to provide a pavement recycling additive composition that can be used as a pavement. In order to achieve the above object, the present invention is characterized in that the amount of rubber is 1 to 30 parts by weight per 100 parts by weight of the petroleum softener. The present invention will be explained below.
It consists of the following two components: petroleum softener and rubber. 1 Petroleum-based softeners are distilled oils obtained by separating low-boiling fractions from crude oil using an atmospheric distillation column, and distilling the heavy crude oil remaining at the bottom of the atmospheric distillation column under reduced pressure. They are classified into paraffinic softeners, naphthenic softeners, and aromatic softeners depending on the type, treatment process, and formulation, but all of these can be used in the present invention. Such a petroleum-based softener has a chemical composition close to that of the maltene fraction in asphalt. 2. Various synthetic rubbers including natural rubber can be used as the rubber, and one type or a mixture of two or more types can be used. Its properties are solid or latex type, and rubber with a Mooney viscosity of about 10 to 100 will give good results. In addition, examples of synthetic rubber include chloroprene rubber, styrene-isoprene copolymer rubber, polyisoprene rubber,
Polybutadiene rubber, styrene-butadiene copolymer rubber, etc. are used. The composition of the present invention is usually obtained as follows. By gradually adding a predetermined amount of rubber, such as rubber latex or 1 to 30 parts by weight of solid rubber, to 100 parts by weight of a petroleum softener heated and melted at a temperature of 90 to 160°C, and heating while continuing to stir. A recycled additive composition for pavement according to the present invention. By using the present invention thus obtained with a waste asphalt mixture in a central plant system, on-road system, etc., a recycled asphalt mixture can be produced. Incidentally, an anti-peeling agent or the like may be added if necessary. Examples of the present invention will be described in detail below. First, in the first example, 100 parts by weight of a petroleum softener heated and melted at a temperature of 140 to 160°C was mixed with 30 parts of chloroprene rubber latex in terms of solid content.
The recycled additive composition for pavement according to the present invention is obtained by adding parts by weight, stirring to remove moisture, and stirring and dissolving until uniform. According to the present invention, when 15 parts by weight of the reclaimed pavement additive composition of the present invention is added and mixed with 100 parts by weight of aged asphalt extracted from a waste asphalt mixture, the properties shown in Table 1 below are obtained. It will be done. In the comparative example shown in Table 1, 15 parts by weight of mineral oil-based aromatic oil was added and mixed with 100 parts by weight of aged asphalt extracted from a waste asphalt mixture. In the second example, 28 parts by weight of styrene-butadiene copolymer rubber latex (calculated as solid content) was added to 100 parts by weight of a petroleum softener heated to a temperature of 140 to 160°C, and the mixture was stirred to remove moisture. The recycled pavement additive composition according to the present invention is obtained by removing the mixture and stirring and dissolving it until it becomes uniform. According to the present invention, when 16 parts by weight of the recycled pavement additive composition of the present invention is added to 100 parts by weight of aged asphalt extracted from waste asphalt and mixed, the properties shown in Table 1 below are obtained. . In the third example, 22 parts by weight of chloroprene rubber latex (calculated as solid content) was added to 100 parts by weight of a petroleum softener heated to a temperature of 140 to 160°C, and the mixture was stirred to remove moisture. By adding 5 parts by weight of block copolymer rubber (SIS type) to the mixture and stirring and dissolving it, a reclaimed pavement additive composition according to the present invention is obtained. According to the present invention, when 14 parts by weight of the recycled pavement additive composition of the present invention is added to 100 parts by weight of aged asphalt extracted from waste asphalt and mixed, the properties shown in Table 1 below are obtained. .

【表】 上記した如く、本発明に係る舗装用再生添加組
成物によれば、石油系軟化剤100重量部に対して
ゴムを1〜30重量部としたことによつて、本発明
を再生添加剤として廃材に用いると、廃材にゴム
の添加とマルテン留分が充分に加えられ、老化し
たアスフアルトをもとの化学組成成分に近い状態
に復元すると共に、粘度の増加や耐久性及び粘着
性に富む様になる為、流動、脆化及び摩耗に対し
て極めて大きな抵抗力を示し、安全でかつ円滑な
交通路を形成することができる。 また、石油系軟化剤はアスフアルトに比べてゴ
ム等を溶かす性質が強にばかりか老化したアスフ
アルトとの相溶性が良く、かつ低粘度である為、
原アスフアルトに近い再生アスフアルト混合物を
得ることができると共に作業能率が向上するもの
である。 更に、廃材に対して多量の本発明を必要としな
い為、廃材の再生に効率的でかつ経済的な効果が
ある。
[Table] As described above, according to the reclaimed pavement additive composition of the present invention, by adding 1 to 30 parts by weight of rubber to 100 parts by weight of the petroleum softener, the reclaimed additive composition of the present invention can be added. When used as an agent on waste materials, the addition of rubber and malten fraction are sufficiently added to the waste materials, restoring aged asphalt to a state close to its original chemical composition, and increasing viscosity, durability, and stickiness. Because of its richness, it exhibits extremely high resistance to flow, embrittlement, and abrasion, making it possible to form safe and smooth traffic routes. In addition, petroleum-based softeners not only have a stronger ability to dissolve rubber etc. than asphalt, but also have good compatibility with aged asphalt and have a low viscosity.
It is possible to obtain a recycled asphalt mixture close to the original asphalt, and work efficiency is improved. Furthermore, since a large amount of the present invention is not required for waste materials, recycling of waste materials is efficient and economical.

Claims (1)

【特許請求の範囲】[Claims] 1 パラフイン系軟化剤、ナフテン系軟化剤およ
び芳香族系軟化剤のうちの一種もしくは二種以上
を混合した石油系軟化剤を90℃から160℃に加熱
溶融し、この石油系軟化剤100重量部に対してゴ
ムを1から30重量部徐々に添加し、加熱しながら
撹拌を行つて混合することを特徴とする舗装用再
生添加組成物の製造方法。
1 Heat and melt a petroleum-based softener that is a mixture of one or more of paraffin-based softeners, naphthenic softeners, and aromatic softeners from 90°C to 160°C, and prepare 100 parts by weight of this petroleum-based softener. 1. A method for producing a reclaimed pavement additive composition, which comprises gradually adding 1 to 30 parts by weight of rubber to the mixture and stirring and mixing while heating.
JP6885282A 1982-04-26 1982-04-26 Regeneration and additive composition for pavement Granted JPS58204203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6885282A JPS58204203A (en) 1982-04-26 1982-04-26 Regeneration and additive composition for pavement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6885282A JPS58204203A (en) 1982-04-26 1982-04-26 Regeneration and additive composition for pavement

Publications (2)

Publication Number Publication Date
JPS58204203A JPS58204203A (en) 1983-11-28
JPS639553B2 true JPS639553B2 (en) 1988-02-29

Family

ID=13385609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6885282A Granted JPS58204203A (en) 1982-04-26 1982-04-26 Regeneration and additive composition for pavement

Country Status (1)

Country Link
JP (1) JPS58204203A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918066B1 (en) 2007-06-26 2010-11-19 Total France NON-GELIFIABLE CONCENTRATE BINDER AND POMPABLE FOR BITUMEN / POLYMER
FR2929616B1 (en) 2008-04-08 2011-09-09 Total France PROCESS FOR CROSSLINKING BITUMEN / POLYMER COMPOSITIONS HAVING REDUCED EMISSIONS OF HYDROGEN SULFIDE
CN103173024B (en) * 2013-03-01 2015-08-19 长安大学 A kind of unmade way bitumen regenerant
CN109440567A (en) * 2018-09-07 2019-03-08 重庆建工住宅建设有限公司 A kind of penetrated asphalt pavement construction method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51125412A (en) * 1975-01-19 1976-11-01 Inst Technologii Nafty Composite of asphalt
JPS553492A (en) * 1978-06-21 1980-01-11 Elf Union Manufacture of mobile bitumennpolymer composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51125412A (en) * 1975-01-19 1976-11-01 Inst Technologii Nafty Composite of asphalt
JPS553492A (en) * 1978-06-21 1980-01-11 Elf Union Manufacture of mobile bitumennpolymer composition

Also Published As

Publication number Publication date
JPS58204203A (en) 1983-11-28

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