JP4476377B2 - Pavement regeneration method and apparatus - Google Patents
Pavement regeneration method and apparatus Download PDFInfo
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【０００１】
【発明の属する技術分野】
本発明は、アスファルト舗装体の再生に関し、特に、アスファルト舗装体の切削材を用いた車道用常温再生混合物とそれを用いる舗装体の再生方法に関する。
【０００２】
【従来の技術】
アスファルト舗装の再生には、加熱プラントで再生する方法、および路上表層再生工法、路上再生路盤工法等現位置で再生する方法が一般に用いられている。加熱プラントによる再生は、アスファルト舗装廃材から骨材を再生しこれを用いて再生混合物を得るものであるが、製造時に多量のＣＯ2 が発生すること、アスファルト舗装廃材やアスファルト混合物の運搬が必要となること、また、都心部においては舗装廃材の置き場を確保することが困難といった問題がある。
【０００３】
路上表層再生工法は、既設舗装を加熱、かきほぐして再生混合物とするものである。路上表層再生工法は、新規アスファルト混合物の使用量を低減することができるため省資源化を図れるものの、加熱プラントの再生と同様ＣＯ2 が多量に発生する。
【０００４】
路上再生路盤工法は、既設のアスファルト舗装を破砕し、破砕したアスファルト舗装骨材と路盤材およびセメントなどの固化剤を混合して締固めて、路盤を再構築するものである。通常、この再生路盤上にアスファルト舗装を舗設することになるが、舗装の仕上がり高さは既設舗装面よりも高くなる。仕上がり高さを低くするための方法としては路床土の中抜き工法があるが、中抜き工法は建設残土が多量に発生するとともにコスト高ともなる。
【０００５】
また既設のアスファルト舗装体を切削し、これにアスファルト乳剤やセメントを添加混合した常温再生混合物を敷き均し、かつ締め固めて再生セメントアスファルト乳剤混合物層を構築する場合も、再生層の安定度が車道用として必要な値を満たすことが困難であって、主に上層路盤以下に用いられるものであり、表層に適用されることがあっても、交通量が極めて小さい道路に限られる。
【０００６】
【発明が解決しようとする課題】
かくして、本発明は、アスファルト廃材や残土を発生せず、温暖化効果ガスの発生を少なくし、かつ安価な車道の基層・表層用の常温再生混合物とその利用方法を提供することを課題とする。
【０００７】
【課題を解決するための手段】
本発明者等は、切削材を用いた再生混合物が基層・表層用混合物としての品質を満足しないのは、切削材の形状が鋭利で偏平であることが主原因であり、その粒形、粒度を調整することで高い締め固め度が得られることを知見し本発明を完成するに到った。
本発明は、アスファルト舗装体の表面を切削するための切削装置（ａ）と、路上の切削材を掻き上げるための掻上装置（ｂ）と、切削材、水、乳剤およびセメントを混合して常温混合物を製造するための混合装置（ｃ）と、該混合物を路上に所定厚さで敷きならすための敷均装置（ｄ）と、掻き上げた切削材を摩砕して粒形を調整するための摩砕装置（ｅ）および／または摩砕装置から排出された切削材の粒度を調整するための振動ふるい装置（ｆ）と、を備えることを特徴とする舗装体の現位置再生装置である。
【０００８】
本発明で用いるアスファルト舗装体の切削材は、補修するアスファルト舗装体を、通常は、切削機により切削して得られる。本発明のアスファルト混合物は、流動わだち掘れ、ひび割れ等路盤まで破損が進行していないアスファルト舗装の修繕に主として適用されるものであり、切削する厚さは１０〜１５０ｍｍの範囲が好ましい。
【０００９】
切削機で切削して得た切削材を骨材として適するように粒形および／または粒度調整に供する。切削材には当初用いた骨材（５号、６号、７号砕石等）に瀝青材を介して細粒分が付着して鋭角的で偏平な形状をしたものが多く混在することから、この処理では、本来の骨材は実質上破壊することなく、それに付着して全体形状を変形させている部分を分離ないし変形させる程度の力を切削材に付与するものであれば用いる装置には特に制限されないが、特に粒形の調整には、摩砕機または摩砕機能を有する装置を用いることが好ましい。
【００１０】
この切削材の粒形及び／又は粒度調整に用いうる摩砕機の例としては、ロッドミル、ハンマクラッシャ、インパクトクラッシャ、コーンクラッシャ等があるが、パグミル型ミキサ内で所定回転数だけ滞留してもよいし、内部に掻き揚げ羽根を設けた回転円筒内を通過させてもよい。このような摩砕処理により、鋭角的で偏平な切削材形状は丸みのある形状に改善され、この形状となった切削材は格段に締め固め度が向上したものとなる。
【００１１】
このように摩砕処理によって粒形を調整した切削材は、さらに、粒度調整処理に供することが好ましい。切削工程で所望の粒度となるよう切削機速度、ロータ回転数、ビット密度、ビットの取り付け角度を調整しても、切削工程から摩耗工程を経るに連れ切削骨材粒度は分離し再生混合物の品質にバラツキを発生させる場合がある。粒形を調整した切削材をふるい分けて所望の配合とすることでより再生混合物の品質が高められる。
【００１２】
本発明の再生混合物は、上記のように粒形および／または粒度を調整したアスファルト切削骨材に、アスファルト乳剤およびセメントを混合したものである。アスファルト乳剤としては、従来知られたアスファルト乳剤を用いることができるが、ノニオン系の石油アスファルト乳剤を用いることがより好ましい。
【００１３】
特にエングラー度（２５℃）が２〜３０、ふるい残留分（１．１８ｍｍ）％が０．３以下、セメント混合性％が１．０以下、蒸発残留分％が５７以上、蒸発残留物の針入度（２５℃）１／１０ｍｍが６０〜３００、同伸度（１５℃）ｃｍが８０以上、同三塩化エタン可溶分％が９７以上、貯蔵安定度（２４時間）％が１以下のノニオン乳剤ＭＮ−１がより好ましい。
【００１４】
セメントとしては、普通ポルトランドセメント、高炉セメント等の適宜のセメントを用いることができる。本発明再生混合物の配合例を次表に示す。
【００１５】
【表１】
上記の再生混合物を、敷きならし、ローラで締め固める。当該再生舗装はアスファルト量が多いため適度なたわみ性を持ち、下層の動きに追従するため、従来のセメント系混合物と異なりセメント量を増やしてもクラックが発生することがないものである。本発明の再生混合物は、混合物の骨材に切削材を用いるため原則として新規骨材が不用でコストがかからないと共に、現位置で混合物を製造することを原則とするため、プラント再生工法のように切削材を現場外に排出する必要がなく、骨材の運搬費が発生しない。さらに、常温で製造するものであるから加熱手段が不用であって温暖化を促進する炭酸ガスの排出量を著しく低減するものである。
【００１７】
【実施例】
本発明の実施例を以下に説明する。
実施例１：
▲１▼切削機で既設アスファルト舗装を所定の厚さに切削する。切削廃材は車線中央部にウインドロー状に残す。
▲２▼ピックアップ装置、及びベルトフィーダ装置を設けた摩砕機で切削材を掻き揚げ、摩砕した切削材をベルトフィーダでミックスペーバのホッパに送る。
▲３▼ミックスペーバで切削材と水、乳剤、セメントを混合し、路上に所定の厚さに敷きならす。
▲４▼ローラで締固める。
本例では、切削機、摩砕機、ミックスペーバ、ローラの構成を示したが、切削装置、摩砕装置、アスファルト乳剤タンク、水タンク、セメントサイロ、混合装置、敷き均し装置、転圧装置を適宜に組み合わせた装置を構成することも可能である。
【００１８】
実施例２：
▲１▼切削材の最大粒径を調整する機能を持つ施工機械の例を図１に示す。これは、ミックスペーバに、振動ふるいと粒形調整用のミキサを取り付けたものであり、実施例１の摩砕機は用いない。
▲２▼切削機で既設アスファルト舗装を所定の厚さに切削する。Ａ切削材を車線中央部にウインドロー状に残す。
▲３▼ミックスペーバの２ピックアップフィーダでＡ切削材をかき上げ、３振動ふるいに送る。３振動ふるいは、２０ｍｍのふるいを装備している。２０ｍｍのふるいは進行方向左前方が下になるように取付けられている。粒径が２０ｍｍより大きい切削材は、４シュートを転がり２ピックアップフィーダの５オーガに送られる。５オーガには切削刃が取付けられており、切削材は攪拌、破砕されながら２ピックアップフィーダで３振動ふるいに戻される。
▲４▼３振動ふるいを通過した粒径２０ｍｍ以下の切削材は、２軸パグミル連続式の６ミキサに落ち攪拌される。振動ふるいの特性から、粗い切削材はミキサの奥に落下し、６ミキサを通過する間に、粗骨材に付着している細粒分が落とされ、混合物に適した粒形となる。６ミキサを通過した切削材は、７ホッパに溜まる。
▲５▼適度な粒径および粒形となった切削材は、８ベルトコンベヤで所定の量が連続的に９ミキサに送られる。切削材の送り量はゲートの開きおよびベルトの速度によってコントロールする。
▲６▼９ミキサの上に１０セメントタンク、１１乳剤タンク、１２水タンクが備え付けられている。セメントはロータリーフィーダ（図示せず）で、乳剤および水は各々のポンプ（図示せず）でミキサに送られる。
セメント、乳剤、水の供給量は、切削材の重量に対して一定の比率となるようにコントロールされる。
▲７▼９ミキサから排出されたＢ常温再生混合物を、１３スクリュウスプレッダで道路幅員方向に広げられ、１４スクリードで敷きならす。
【００１９】
実施例３：
▲１▼別の一例の施工機械を図２に示す。これはミックスペーバに振動ふるいと破砕機を装備したものである。この例では、切削機械の後に摩砕機が配置され摩砕された切削材が車線中央部にウインドロー状に残されている。
▲２▼ミックスペーバの２ピックアップフィーダでＡ切削材をかき上げ、３振動ふるいに送る。３振動ふるいは、２０ｍｍ、１３ｍｍ、５ｍｍのふるい網を装備している。２０ｍｍの網は進行方向右前方が下になるように取付けられている。粒径が２０ｍｍより大きい切削材は、転がって４ａシュートで１５破砕機に送られ、破砕される。破砕された切削材は４ｂシュートを伝わり２ピックアップフィーダの５オーガに戻される。戻された切削材は、２ピックアップフィーダで再び３振動スクリーンに送られる。
▲３▼３振動スクリーンでふるい分けられた切削材は７ａ，７ｂ，７ｃストックビンに溜められる。ストックビンに溜められた０〜５ｍｍ、５〜１３ｍｍ、１３〜２０ｍｍの切削材は各ストックビンの下に配置されたベルトコンベアにより所定の比率で９ミキサに送られる。各切削材の供給量はゲートの開きとベルトコンベアの速度で決定される。９ミキサの上には、１０セメントタンク、１１乳剤タンクおよび１２水タンクが配置されており、水、乳剤およびセメントは切削材の重量に対して一定の比率の重量が９ミキサに送られる。
▲４▼９ミキサで混合されたＢ常温再生混合物は１３スクリュウスプレッダで道路の幅員方向に広げ、１４スクリードで所定の厚さに敷きならされる。
▲５▼１８常温再生混合物をローラで締固める。
【００２０】
【発明の効果】
アスファルト舗装体の切削材の粒形を調整し、該切削材にアスファルト乳剤およびセメントを添加混合する常温再生混合物により、また、アスファルト舗装体の切削材の粒度を調整し、該切削材にアスファルト乳剤およびセメントを添加混合する常温再生混合物により、車道に適用され得る常温再生混合物が得られる。本発明の混合物は、切削材を骨材とした常温乳剤セメント混合物であるためアスファルト廃材が発生することもなく切削廃材の運搬処理費がかからず、また、新規の補充骨材が不用で省資源を図るものであり、骨材材料費、加熱再生アスファルト混合物等の材料費や運搬費を不用とする。さらに、本発明混合物は常温で再生されるものであるから省エネルギーを実現し温暖化効果ガスの発生を抑制し環境を保全する効果をもたらす。
【図面の簡単な説明】
【図１】実施例で用いた施工機械の一例を示す概略図。
【図２】実施例で用いた別の施工機械の一例を示す概略図。
【符号の説明】
２ ピックアップフィーダ
５ オーガ
７ ホッパ
８ ベルトコンベヤ
９ ミキサ
１０ セメントタンク
１１ 乳剤タンク
１２ 水タンク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to regeneration of an asphalt pavement, and more particularly, to a room temperature regenerated mixture using a cutting material for asphalt pavement and a method for regenerating a pavement using the same.
[0002]
[Prior art]
As regeneration of asphalt pavement, a method of regenerating at a heating plant and a method of regenerating at the current position such as a road surface layer regenerating method and a road reclaimed roadbed method are generally used. Regeneration by a heating plant is to regenerate aggregate from asphalt pavement waste and use it to obtain a regenerated mixture, but a large amount of CO 2 is generated during production, and transportation of asphalt pavement waste and asphalt mixture is necessary. In addition, there is a problem that it is difficult to secure a place for pavement waste in the city center.
[0003]
The road surface layer recycling method is to reheat the existing pavement to a recycled mixture. The road surface layer regeneration method can reduce the amount of new asphalt mixture used, and thus saves resources, but generates a large amount of CO 2 as in the case of heating plant regeneration.
[0004]
The road reclaimed roadbed construction method is to reconstruct a roadbed by crushing existing asphalt pavement, mixing the crushed asphalt pavement aggregate with a solidifying agent such as roadbed material and cement, and compacting. Normally, asphalt pavement is paved on this recycled roadbed, but the finished height of the pavement is higher than the existing pavement surface. As a method for lowering the finished height, there is a method of hollowing out roadbed soil, but the hollowing out method generates a large amount of construction residual soil and increases the cost.
[0005]
In addition, when the existing asphalt pavement is cut, and the room temperature regenerated mixture with asphalt emulsion and cement added is mixed and leveled, and compacted to construct a regenerated cement asphalt emulsion mixture layer, the stability of the regenerated layer is also improved. It is difficult to satisfy the value required for roadways, and it is mainly used below the upper roadbed. Even if it is applied to the surface layer, it is limited to roads with extremely small traffic.
[0006]
[Problems to be solved by the invention]
Thus, it is an object of the present invention to provide a room temperature regeneration mixture for a base layer / surface layer of a roadway that does not generate asphalt waste and residual soil, reduces the generation of a greenhouse effect gas, and uses the same, and a method for using the mixture. .
[0007]
[Means for Solving the Problems]
The main reason why the inventors do not satisfy the quality of the base layer / surface layer mixture is the sharpness and flatness of the cutting material. It has been found that a high degree of compaction can be obtained by adjusting the above, and the present invention has been completed.
The present invention includes a cutting device (a) for cutting the surface of an asphalt pavement, a scraping device (b) for scraping up a cutting material on a road, a cutting material, water, an emulsion, and a cement. A mixing device (c) for producing a normal temperature mixture, a spreader (d) for spreading the mixture at a predetermined thickness on the road, and grinding the scraped-up cutting material to adjust the particle shape And a vibration sieving device (f) for adjusting the particle size of the cutting material discharged from the grinding device. is there.
[0008]
The asphalt pavement cutting material used in the present invention is usually obtained by cutting an asphalt pavement to be repaired with a cutting machine. The asphalt mixture of the present invention is mainly applied to repair of asphalt pavement in which damage has not progressed to the roadbed such as fluid rubbing and cracking, and the cutting thickness is preferably in the range of 10 to 150 mm.
[0009]
The cutting material obtained by cutting with a cutting machine is subjected to particle shape and / or particle size adjustment so as to be suitable as an aggregate. Since there are many mixed materials with fine particles attached to the initially used aggregate (No.5, No.6, No.7 crushed stone, etc.) via bituminous materials, and sharp and flat, In this process, if the original aggregate is not substantially destroyed and the cutting material is applied with a force that separates or deforms the part that adheres to and deforms the entire shape, Although not particularly limited, it is preferable to use a grinder or a device having a grinding function, particularly for adjusting the particle shape.
[0010]
Examples of the grinder that can be used to adjust the particle shape and / or particle size of the cutting material include a rod mill, a hammer crusher, an impact crusher, and a cone crusher. However, the grinder may stay in a pug mill mixer for a predetermined number of rotations. Then, it may be passed through a rotating cylinder provided with a raking blade inside. By such a grinding treatment, the sharp and flat cutting material shape is improved to a rounded shape, and the cutting material having this shape has a much improved degree of compaction.
[0011]
Thus, it is preferable that the cutting material which adjusted the particle shape by the grinding process is further used for the particle size adjustment process. Even if the cutting machine speed, rotor speed, bit density, and bit mounting angle are adjusted so that the desired particle size is achieved in the cutting process, the cutting aggregate particle size is separated as the wear process proceeds from the cutting process, and the quality of the regenerated mixture May cause variations. The quality of the regenerated mixture can be further improved by sieving the cutting material having an adjusted particle shape to obtain a desired composition.
[0012]
The regenerated mixture of the present invention is a mixture of asphalt emulsion and cement mixed with the asphalt-cut aggregate whose particle shape and / or particle size are adjusted as described above. As the asphalt emulsion, a conventionally known asphalt emulsion can be used, but a nonionic petroleum asphalt emulsion is more preferably used.
[0013]
In particular, the degree of engraving (25 ° C.) is 2 to 30, the sieve residue (1.18 mm)% is 0.3 or less, the cement mixing% is 1.0 or less, the evaporation residue% is 57 or more, and the evaporation residue needle The penetration (25 ° C.) 1/10 mm is 60 to 300, the elongation (15 ° C.) cm is 80 or more, the ethane trichloride soluble% is 97 or more, and the storage stability (24 hours)% is 1 or less. Nonionic emulsion MN-1 is more preferred.
[0014]
Appropriate cements such as ordinary Portland cement and blast furnace cement can be used as the cement. The blending examples of the regenerated mixture of the present invention are shown in the following table.
[0015]
[Table 1]
The above regenerated mixture is laid out and compacted with a roller. Since the reclaimed pavement has a large amount of asphalt, it has moderate flexibility and follows the movement of the lower layer. Therefore, unlike conventional cement-based mixtures, cracks do not occur even if the amount of cement is increased. Since the recycled mixture of the present invention uses cutting materials for the aggregate of the mixture, the new aggregate is basically unnecessary and does not cost, and the principle is that the mixture is manufactured at the current position. There is no need to discharge the cutting material outside the site, and there is no cost for transporting aggregates. Furthermore, since it is manufactured at room temperature, the heating means is unnecessary, and the discharge amount of carbon dioxide gas that promotes warming is remarkably reduced.
[0017]
【Example】
Examples of the present invention will be described below.
Example 1:
(1) The existing asphalt pavement is cut to a predetermined thickness with a cutting machine. The cutting waste is left in a windrow shape in the center of the lane.
(2) The cutting material is scraped up by a grinder equipped with a pickup device and a belt feeder device, and the ground cutting material is sent to the hopper of the mix paver by the belt feeder.
(3) Mix cutting material, water, emulsion, and cement with a mix paver, and spread them on the road to a predetermined thickness.
(4) Compact with rollers.
In this example, the configuration of the cutting machine, attritor, mix paver, and roller was shown. However, the cutting equipment, attritor, asphalt emulsion tank, water tank, cement silo, mixing device, spreader, and rolling device were appropriately used. It is also possible to constitute a device combined with the above.
[0018]
Example 2:
(1) An example of a construction machine having a function of adjusting the maximum particle size of the cutting material is shown in FIG. In this example, a vibration sieve and a mixer for adjusting the particle shape are attached to a mix paver, and the attritor of Example 1 is not used.
(2) The existing asphalt pavement is cut to a predetermined thickness with a cutting machine. A Cutting material is left in a windrow shape in the center of the lane.
(3) Scoop up the A cutting material with the 2 pickup feeder of the mix paver and send it to the 3 vibration sieve. The 3 vibration sieve is equipped with a 20mm sieve. The 20 mm sieve is attached so that the left front in the direction of travel is down. A cutting material having a particle size larger than 20 mm rolls 4 chutes and is sent to 5 augers of 2 pickup feeders. A cutting blade is attached to the 5 auger, and the cutting material is returned to a 3-vibration sieve by a 2-pickup feeder while being stirred and crushed.
(4) The cutting material having a particle size of 20 mm or less that has passed through the 3 vibrating screen is dropped into a biaxial pug mill continuous 6 mixer and stirred. Due to the characteristics of the vibration sieve, the coarse cutting material falls to the back of the mixer, and while passing through the 6 mixers, fine particles adhering to the coarse aggregate are dropped, and a particle shape suitable for the mixture is obtained. The cutting material that has passed through the 6 mixers accumulates in the 7 hoppers.
(5) A predetermined amount of the cutting material having an appropriate particle size and shape is continuously fed to 9 mixers by an 8-belt conveyor. The feed rate of the cutting material is controlled by the gate opening and the belt speed.
(6) A 10 cement tank, 11 emulsion tank, and 12 water tank are provided on the 9 mixer. Cement is sent to a mixer by a rotary feeder (not shown), and emulsion and water are sent to a mixer by respective pumps (not shown).
The supply amount of cement, emulsion and water is controlled so as to be a constant ratio with respect to the weight of the cutting material.
(7) The B room temperature regeneration mixture discharged from the 9 mixer is spread in the road width direction with a 13 screw spreader and spread with 14 screeds.
[0019]
Example 3:
(1) Another example of construction machine is shown in FIG. This is a mix paver equipped with a vibrating screen and a crusher. In this example, a grinder is disposed after the cutting machine, and the milled cutting material is left in a windrow shape in the center of the lane.
(2) Scoop up the A cutting material with the 2 pickup feeder of the mix paver and feed it to the 3 vibration sieve. The three-vibration sieve is equipped with 20 mm, 13 mm and 5 mm sieve screens. The 20 mm net is attached so that the right front of the traveling direction is downward. The cutting material having a particle size larger than 20 mm rolls and is sent to a 15 crusher with a 4a chute and crushed. The crushed cutting material travels through the 4b chute and is returned to the 5 auger of the 2 pickup feeder. The returned cutting material is sent again to the 3 vibration screen by the 2 pickup feeder.
{Circle around (3)} The cutting material screened by the three vibrating screens is stored in the 7a, 7b and 7c stock bins. Cutting materials of 0 to 5 mm, 5 to 13 mm, and 13 to 20 mm stored in the stock bins are sent to 9 mixers at a predetermined ratio by a belt conveyor arranged under each stock bin. The supply amount of each cutting material is determined by the opening of the gate and the speed of the belt conveyor. Above the 9 mixer, a 10 cement tank, an 11 emulsion tank, and a 12 water tank are arranged, and water, emulsion, and cement are sent to the 9 mixer at a constant ratio with respect to the weight of the cutting material.
(4) The B room temperature regenerated mixture mixed with 9 mixers is spread in the width direction of the road with 13 screw spreaders and spread to a predetermined thickness with 14 screeds.
{Circle around (5)} 18 The room temperature recycled mixture is compacted with a roller.
[0020]
【The invention's effect】
The grain shape of the cutting material of the asphalt pavement is adjusted, and the particle size of the cutting material of the asphalt pavement is adjusted by a normal temperature reproduction mixture in which the asphalt emulsion and cement are added and mixed with the cutting material, and the asphalt emulsion is added to the cutting material. The room temperature regeneration mixture that can be applied to the roadway is obtained by the room temperature regeneration mixture in which cement is added and mixed. The mixture of the present invention is a normal temperature emulsion cement mixture with cutting material as aggregate, so there is no generation of asphalt waste, no cost for transporting cutting waste, and no new supplemental aggregate is required and saved. It is intended to save resources and eliminates the need for aggregate material costs, material costs such as heat-regenerated asphalt mixture, and transportation costs. Furthermore, since the mixture of the present invention is regenerated at normal temperature, it achieves energy saving, suppresses the generation of warming effect gas, and brings about the effect of preserving the environment.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of a construction machine used in Examples.
FIG. 2 is a schematic view showing an example of another construction machine used in the examples.
[Explanation of symbols]
2
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13156699A JP4476377B2 (en) | 1999-05-12 | 1999-05-12 | Pavement regeneration method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13156699A JP4476377B2 (en) | 1999-05-12 | 1999-05-12 | Pavement regeneration method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000317434A JP2000317434A (en) | 2000-11-21 |
| JP4476377B2 true JP4476377B2 (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP13156699A Expired - Fee Related JP4476377B2 (en) | 1999-05-12 | 1999-05-12 | Pavement regeneration method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114438856A (en) * | 2020-11-03 | 2022-05-06 | 江苏北极星交通产业集团有限公司 | Cold regeneration process for plant-mixed high-performance asphalt surface layer |
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| JP2000317434A (en) | 2000-11-21 |
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