JP3066824B2 - Asphalt pavement method and penetration improvement material - Google Patents
Asphalt pavement method and penetration improvement materialInfo
- Publication number
- JP3066824B2 JP3066824B2 JP8276938A JP27693896A JP3066824B2 JP 3066824 B2 JP3066824 B2 JP 3066824B2 JP 8276938 A JP8276938 A JP 8276938A JP 27693896 A JP27693896 A JP 27693896A JP 3066824 B2 JP3066824 B2 JP 3066824B2
- Authority
- JP
- Japan
- Prior art keywords
- asphalt
- penetration
- pavement
- asphalt pavement
- improving material
- 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 - Fee Related
Links
- 239000010426 asphalt Substances 0.000 title claims description 108
- 230000035515 penetration Effects 0.000 title claims description 62
- 239000000463 material Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 18
- 239000000126 substance Substances 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 26
- 239000003054 catalyst Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 230000006866 deterioration Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Description
【0001】[0001]
【0002】本発明は、アスファルト舗装方法及び針入
度改良材に関し、詳細には、アスファルトの長寿命化を
図るアスファルトの舗装方法、及び、該アスファルトの
舗装方法の実施の際に使用する針入度改良材に関する。[0002] The present invention relates to an asphalt pavement method and a penetration improving material, and more particularly, to an asphalt pavement method for extending the life of asphalt, and a needle used for carrying out the asphalt pavement method. Degree improving material.
【0003】[0003]
【0004】従来のアスファルト舗装方法によるアスフ
ァルト舗装の欠点の一つは、アスファルト舗装の構成成
分であるストレートアスファルトが長年の使用により劣
化し、バインダーとしての機能を喪失し、舗装体がもろ
くなり、最終的には舗装体中の骨材が剥離して舗装体が
崩壊に至ってしまうことである。One of the disadvantages of the asphalt pavement by the conventional asphalt pavement method is that straight asphalt, which is a component of the asphalt pavement, deteriorates due to long-term use, loses its function as a binder, and the pavement becomes brittle. Specifically, the aggregate in the pavement is peeled off, and the pavement collapses.
【0005】そのため、アスファルト舗装の寿命はセメ
ント舗装に比して短く、平均10年程度であり、アスフ
ァルト舗装の長寿命化が望まれている。[0005] Therefore, the life of asphalt pavement is shorter than that of cement pavement, and is about 10 years on average, and it is desired to extend the life of asphalt pavement.
【0006】また、最近アスファルト舗装の更新工事の
際に発生するアスファルトコンクリート塊の廃棄処分が
困難になっており、アスファルトコンクリート塊の再生
利用が義務付けられている。[0006] Also, it has become difficult to dispose of asphalt concrete lumps generated at the time of renewal work of asphalt pavement, and recycling of asphalt concrete lumps is required.
【0007】この意味からも、アスファルト舗装の長寿
命化対策が求められている。[0007] In this sense, there is a demand for measures to extend the life of asphalt pavement.
【0008】アスファルト舗装の長寿命化対策の一つと
して、アスファルト舗装の際に、ストレートアスファル
トをそのまま用いることなく、該ストレートアスファル
トにゴムや樹脂を溶解させた改質アスファルトを用いる
技術が存在する。As one of measures for extending the life of asphalt pavement, there is a technique of using modified asphalt obtained by dissolving rubber or resin in the straight asphalt without using the straight asphalt as it is in asphalt pavement.
【0009】しかし、この技術によるアスファルト舗装
方法は、高価な改質アスファルトを用いる必要があるの
で舗装費用コストが高くなり、また施工温度が通常用い
られるストレートアスファルトより高く、施工し難い欠
点を有している。[0009] However, the asphalt pavement method according to this technique requires expensive modified asphalt, so that the cost of pavement is high, and the construction temperature is higher than that of straight asphalt which is usually used, so that it is difficult to construct. ing.
【0010】従って、アスファルト舗装の長寿命化を図
ることができ、しかも、安価かつ容易に施工可能なアス
ファルト舗装方法が望まれていた。[0010] Accordingly, there has been a demand for an asphalt pavement method that can extend the life of asphalt pavement and that can be inexpensively and easily constructed.
【0011】[0011]
【0012】本発明者らは、上記課題を解決するため
に、鋭意技術開発に努め、アスファルト舗装の劣化は、
アスファルトが特に夏季に太陽光線の影響で高温度にさ
らされることにより、アスファルト中の軽質分の蒸散、
および、アスファルトの酸化を受け、アスファルトが硬
化することにより起きるので、この劣化を緩和すること
ができれば、アスファルト舗装を長寿命化することがで
きると考えた。In order to solve the above-mentioned problems, the present inventors have enthusiastically developed technology, and the deterioration of asphalt pavement
Exposure of asphalt to high temperatures, especially in the summer, due to the effects of sunlight, causes the transpiration of light components in asphalt,
In addition, it is considered that asphalt is hardened by oxidation of asphalt and the asphalt hardens. Therefore, it is considered that if the deterioration can be reduced, the life of the asphalt pavement can be extended.
【0013】そして、アスファルト舗装現場でアスファ
ルト混合物を敷きならす際、アスファルト再生油を含
浸、吸着させた多孔性材料からなる針入度改良材を散布
し展圧すると、アスファルト再生油が徐々に滲み出て舗
装体の硬化を防ぎ、舗装体の寿命を延長する作用がある
ことを見出し、本発明を完成するに至った。When the asphalt mixture is spread on an asphalt pavement site, a penetration improving material made of a porous material impregnated with and adsorbed with asphalt regenerating oil is sprayed and developed, and asphalt regenerated oil gradually exudes The present invention has been found to have an effect of preventing hardening of the pavement and extending the life of the pavement, and has completed the present invention.
【0014】即ち、本発明の課題を解決するための手段
は、下記のとおりである。That is, means for solving the problems of the present invention are as follows.
【0015】第1に、アスファルト再生油を含浸、吸着
させた多孔性物質からなる針入度改良材を、アスファル
ト舗装体内部に含有させたことを特徴とする、アスファ
ルト舗装方法。First, an asphalt pavement method characterized in that a penetration improving material made of a porous substance impregnated with and adsorbed with asphalt regenerated oil is contained in an asphalt pavement.
【0016】第2に、アスファルト再生油を含浸、吸着
させた多孔性物質からなる針入度改良材。Second, a penetration improving material made of a porous substance impregnated with and adsorbed with asphalt regenerated oil.
【0017】本発明のアスファルト舗装方法によると、
針入度改良材中の再生油がアスファルト舗装体中に徐々
に滲み出て、アスファルト舗装体の劣化を未然に防ぐ。According to the asphalt pavement method of the present invention,
The reclaimed oil in the penetration improving material gradually seeps into the asphalt pavement to prevent deterioration of the asphalt pavement.
【0018】また、アスファルトの劣化は、路面温度の
上昇によるアスファルト中の軽質分の蒸散や、太陽光線
の影響によるアスファルトの酸化等により起きるが、針
入度改良材からの再生油の滲出も、アスファルトの軟化
点(通常45−50℃)以上の路面温度の上昇により増
加するので、劣化速度に見合った滲出速度が期待でき
る。Deterioration of asphalt is caused by evaporation of light components in asphalt due to an increase in road surface temperature, oxidation of asphalt by the influence of sunlight, and the like. As the asphalt is increased by increasing the road surface temperature above the softening point of the asphalt (usually 45-50 ° C.), a leaching speed commensurate with the deterioration speed can be expected.
【0019】本発明に係るアスファルト舗装方法は、現
場施行タイプの他にプラント混合法タイプのものにも適
用できるが、舗装現場でアスファルト合材を敷きならす
際に、針入度改良材を散布する現場施工タイプの方が、
プラント混合法より混合時の温度条件が低温であり、混
合時の溶出が少ないので望ましい。The asphalt pavement method according to the present invention can be applied not only to the on-site execution type but also to the plant mixing method type. However, when the asphalt mixture is spread on the pavement site, the penetration improving material is sprayed. On-site construction type,
It is desirable because the temperature condition at the time of mixing is lower than that of the plant mixing method, and the elution during mixing is less.
【0020】さらに、本発明のアスファルト舗装方法
は、新規にアスファルト舗装をする際に実施する以外に
も、アスファルト舗装の更新時の施工の際に実施するこ
とができる。Further, the asphalt pavement method of the present invention can be carried out not only when newly asphalt pavement is carried out, but also when construction is carried out when asphalt pavement is renewed.
【0021】例えば、更新時の施工法として普及しつつ
ある路上表層再生工法の施工時に、再生用添加材の一つ
として、本発明に係る針入度改良材を使用することが望
ましい。For example, it is desirable to use the penetration improving material according to the present invention as one of the additives for regeneration during construction of a road surface layer regeneration method which is becoming popular as a construction method at the time of renewal.
【0022】本発明に係る針入度改良材を使用すること
で、再生アスファルトの性状回復が期待でき、また、寿
命短縮が心配される再生アスファルトの長寿命化が期待
できる。By using the penetration improving material according to the present invention, the properties of the recycled asphalt can be expected to be recovered, and the life of the recycled asphalt can be expected to be prolonged.
【0023】舗装施工直後のアスファルト再生油の溶出
により、舗装体中のアスファルトの針入度増加が予想さ
れる時には予め施工の際、針入度の低い固めのストレー
トアスファルトを用いるか、または、再生油を吸着、含
浸していない多孔性材料を針入度改良材散布と同時に散
布し転圧を行う。If the penetration of asphalt in the pavement is expected to increase due to the elution of the asphalt regenerated oil immediately after the pavement construction, a solid straight asphalt having a low penetration is used in advance of construction, or the asphalt is regenerated. A porous material not adsorbing and impregnating oil is sprayed at the same time as the penetration improving material is sprayed to perform rolling.
【0024】本発明に係る針入度改良材の製造に使用す
るアスファルト再生油は、乳剤タイプでない油性のもの
が必要であるが、油性ならば、通常のアスファルト再生
油は全て使用でき、更に粘度と引火点が適合すれば、全
ての芳香族性の油が使用可能である。The asphalt regenerated oil used in the production of the penetration improving material according to the present invention needs to be an oily one which is not an emulsion type. If the flash points match, all aromatic oils can be used.
【0025】また、改質アスファルトの製造に使用され
るゴムや樹脂をアスファルト再生油に溶解させたものを
針入度改良材に用いると、アスファルト再生油粘度が増
加し、アスファルト再生油の溶出性を変えることができ
る。Further, when a rubber or resin used in the production of modified asphalt dissolved in asphalt regenerated oil is used as a penetration improving material, the viscosity of the asphalt regenerated oil is increased, and the dissolution property of the asphalt regenerated oil is increased. Can be changed.
【0026】また、同時にアスファルトの改質を行うこ
とができるので、アスファルト舗装体の耐流動性を向上
させることができ、長寿命化を計ることができる。Further, since the asphalt can be reformed at the same time, the flow resistance of the asphalt pavement can be improved, and the service life can be extended.
【0027】針入度改良材を構成する多孔性物質として
は、油分を吸着する特性を有するものならば、使用可能
であるが、表面積が大きく、吸着量の多いものならば、
なお良い。As the porous substance constituting the penetration improving material, any substance having a property of adsorbing oil can be used. However, if the substance has a large surface area and a large amount of adsorption, it can be used.
Still better.
【0028】多孔性物質の粒度はアスファルト舗装に用
いられる骨材、細骨材、石粉の粒度範囲のものが用いら
れる。The particle size of the porous material is in the range of the aggregate, fine aggregate and stone powder used for asphalt pavement.
【0029】粒度は小さい程、再生油の徐放性が期待で
きないが、粒径が大きいと骨材の強度を満足することが
難しくなり、また、粒径が小さい方が舗装体中のアスフ
ァルトに均質に混合するので、針入度改良材が偏在する
恐れが少なくなる。As the particle size is smaller, the sustained release of the regenerated oil cannot be expected. However, when the particle size is larger, it is difficult to satisfy the strength of the aggregate, and when the particle size is smaller, the asphalt in the pavement is less. The homogeneous mixing reduces the risk of uneven distribution of the penetration improving material.
【0030】そのため、細骨材以下の粒度のものが望ま
しい。Therefore, it is desirable that the particle size is smaller than the fine aggregate.
【0031】針入度改良材を構成する多孔性物質として
は、石油精製工場から発生する使用済みFCC触媒が、
粒度が平均60ミクロン程度であり、安価であって、し
かも耐磨耗性が有り、かつ表面積が大きく油分の吸着量
が多いので、最適である。As the porous substance constituting the penetration improving material, a used FCC catalyst generated from a petroleum refinery is used.
It is optimal because it has an average particle size of about 60 microns, is inexpensive, has abrasion resistance, has a large surface area, and has a large amount of oil adsorption.
【0032】[0032]
【0033】以下に、本発明の実施例を説明するが、本
発明はこれらの実施例に限定されることはない。Examples of the present invention will be described below, but the present invention is not limited to these examples.
【0034】[0034]
【実施例1】Embodiment 1
【0035】多孔性物質として使用済みFCC触媒を用
い、該FCC触媒100部に重量比でアスファルト再生
油を20部加え、均質になるまで混合し、2日間静置
し、アスファルト再生油を、FCC触媒に含浸、吸着さ
せることで針入度改良材Aを製造した。Using a used FCC catalyst as a porous material, 20 parts of asphalt regenerated oil was added to 100 parts of the FCC catalyst by weight ratio, mixed until homogeneous, and allowed to stand for 2 days. The penetration improving material A was manufactured by impregnating and adsorbing the catalyst.
【0036】なお、ここで用いたアスファルト再生油
は、15℃における密度が1.0165(g/cm3)、6
0℃における粘度が183.4(mm2/S)、組成分析結果
において、アスファルテン0%、飽和分58.9%、芳
香族分36.8%、レジン4.8%のものであった。The asphalt regenerated oil used here had a density at 15 ° C. of 1.0165 (g / cm 3 ),
The viscosity at 0 ° C. was 183.4 (mm 2 / S), and as a result of composition analysis, it was asphaltene 0%, saturated content 58.9%, aromatic content 36.8%, and resin 4.8%.
【0037】同様に、アスファルト再生油を30部加え
た針入度改良材Bを製造した。Similarly, a penetration improving material B to which 30 parts of asphalt regenerated oil was added was produced.
【0038】本発明区1として、150℃に加熱したス
トレートアスファルト(針入度64)100部に、80
℃に熱した針入度改良材A50部(重量比)を加え、十
分混合し、これを針入度測定用の小容器に入れ、実験レ
ベルにおけるアスファルト舗装を形成した。In the present invention section 1, 80 parts were added to 100 parts of straight asphalt (penetration degree 64) heated to 150 ° C.
50 parts (weight ratio) of the penetration improving material A heated to 0 ° C. was added and mixed well, and the mixture was placed in a small container for measuring penetration to form asphalt pavement at an experimental level.
【0039】該アスファルト舗装について、常温に冷却
後、本発明区1について、25℃における針入度(単
位:1/10mm)を、JIS K2207に準拠して測定し
た。なお、以下における針入度の測定も同様に行った。After cooling the asphalt pavement to room temperature, the penetration of the invention section 1 at 25 ° C. (unit: 1/10 mm) was measured in accordance with JIS K2207. In addition, the measurement of the penetration in the following was performed similarly.
【0040】次に、比較のために、アスファルト再生油
を含浸、吸着させていないFCC触媒を用いて、次のよ
うにアスファルト舗装を形成し、常温に冷却後、比較区
1について、25℃における針入度を測定した。Next, for comparison, asphalt pavement was formed as follows using an FCC catalyst not impregnated with and adsorbed with asphalt regenerated oil, and cooled to room temperature. The penetration was measured.
【0041】比較区1として、150℃に加熱したスト
レートアスファルト(針入度64)100部に、80℃
に加熱した使用済みFCC触媒41.7部(重量比)
と、別にアスファルト再生油8.3部(重量比)とを加
え、十分混合し、これを針入度測定用の小容器に入れ、
実験レベルにおけるアスファルト舗装を形成した。As Comparative Section 1, 100 parts of straight asphalt (penetration 64) heated to 150 ° C.
41.7 parts of used FCC catalyst (weight ratio)
Separately, 8.3 parts (weight ratio) of asphalt regenerated oil were added, mixed well, and placed in a small container for measuring penetration.
Asphalt pavement at experimental level was formed.
【0042】両者の針入度は、針入度改良材Aを用いた
本発明区1に係るものは、「59」であったのに対し、
アスファルト再生油をFCC触媒に含浸させていない比
較区1に係るものは、「78」であった。The penetration of both of the samples according to the present invention 1 using the penetration improving material A was “59”,
“78” was obtained in Comparative Section 1 in which the asphalt regenerated oil was not impregnated with the FCC catalyst.
【0043】この結果、針入度改良材を添加した本発明
区1では、使用済みFCC触媒とアスファルト再生油と
を別々に添加した比較区1に比して、混合後の針入度増
加はなく、多孔性材料である使用済みFCC触媒にアス
ファルト再生油が保持されているのが確認できる。As a result, in the inventive section 1 in which the penetration improving material was added, the increase in penetration after mixing was smaller than in the comparative section 1 in which the used FCC catalyst and the asphalt regenerated oil were separately added. It can be confirmed that the used FCC catalyst, which is a porous material, retains the asphalt regenerated oil.
【0044】[0044]
【実施例2】Embodiment 2
【0045】次に、本発明に係るアスファルト舗装方法
によるストレートアスファルトの劣化を調べた。Next, deterioration of straight asphalt by the asphalt pavement method according to the present invention was examined.
【0046】本発明区2として、150℃に加熱した針
入度64のストレートアスファルト100部に、針入度
改良材A20部(重量比)を加え混合後、恒温槽に入れ
130℃にて20分間静置した。In the present invention section 2, 20 parts (weight ratio) of the penetration improving material A was added to 100 parts of straight asphalt having a penetration of 64 heated to 150 ° C., mixed, and then put in a constant temperature bath at 130 ° C. for 20 minutes. Let stand for minutes.
【0047】これを針入度測定用の小容器に分取し蓋を
した後、劣化実験のため、60℃の恒温槽に入れ静置
し、実験レベルのアスファルト舗装を形成し、経日ごと
に取り出し、本発明区2について、25℃における針入
度を測定した。After dispensing this into a small container for measuring penetration and closing the lid, the container was placed in a thermostat at 60 ° C. and allowed to stand for deterioration experiments to form asphalt pavement of an experimental level. Then, the penetration degree at 25 ° C. was measured for the invention section 2.
【0048】次に、比較区2として、150℃に加熱し
た針入度64のストレートアスファルト100部に、ア
スファルト再生油1.5部(重量比)を加え混合後、恒
温槽に入れ130℃にて20分静置した。Next, as Comparative Section 2, 1.5 parts (weight ratio) of asphalt regenerated oil was added to 100 parts of straight asphalt having a penetration of 64 heated to 150 ° C., mixed, and then put in a thermostat to 130 ° C. For 20 minutes.
【0049】これを針入度測定用の小容器に分取し蓋を
した後、劣化実験のため、60℃の恒温槽に入れ静置
し、実験レベルのアスファルト舗装を形成し、経日ごと
に取り出し、比較区2について、25℃における針入度
を測定した。After dispensing this in a small container for measuring penetration and closing the lid, the container was placed in a thermostat at 60 ° C. and allowed to stand for deterioration experiments to form asphalt pavement of an experimental level. And the penetration at 25 ° C. was measured for Comparative Section 2.
【0050】測定の結果は、次のとおりであった。The results of the measurement were as follows.
【0051】本発明区2は、直後「69」、1日後「6
4」、3日後「62」、7日後「60」であり、7日後
の針入度残留率は87%であった。In the present invention section 2, immediately after “69”, one day later “6”
"4", "62" after 3 days, "60" after 7 days, and the penetration residual ratio after 7 days was 87%.
【0052】これに対し、比較区2は、直後「69」、
1日後「63」、3日後「58」、7日後「53」であ
り、7日後の針入度残留率は77%であった。On the other hand, in the comparison section 2, immediately after “69”,
One day later, "63", three days later, "58", seven days later, "53", and the penetration degree residual ratio after seven days was 77%.
【0053】この結果、本発明区2が、7日後の針入度
が明らかに高く、針入度改良材が劣化に対して効果的で
あることが確認できる。As a result, it is confirmed that the inventive section 2 has a clearly high penetration after 7 days, and that the penetration improving material is effective against deterioration.
【0054】[0054]
【実施例3】Embodiment 3
【0055】次に、再生アスファルトを想定し、強制劣
化させたストレートアスファルトを用いた場合の実施例
について説明する。Next, an example in which straight asphalt that has been forcibly degraded and used assuming recycled asphalt will be described.
【0056】本発明区3として、150℃に加熱した強
制劣化させたストレートアスファルト(針入度31)1
00部に、上記実施例1で得た針入度改良材B90部
(重量比)を加え混合後、恒温槽に入れ130℃にて2
0分静置した。In the invention section 3, straight asphalt (penetration 31) 1 which was forcibly deteriorated and heated to 150 ° C. 1
To 90 parts, 90 parts (weight ratio) of the penetration improving material B obtained in Example 1 above were added and mixed, and then placed in a thermostat at 130 ° C. for 2 hours.
It was left for 0 minutes.
【0057】これを針入度測定用の小容器に分取し蓋を
し、60℃の恒温槽に入れて静置することで、実験レベ
ルのアスファルト舗装を形成し、経日ごとに取り出し、
本発明区3について、25℃における針入度を測定し
た。This was dispensed into a small container for measuring penetration, covered, placed in a thermostat at 60 ° C. and allowed to stand, thereby forming an experimental-grade asphalt pavement.
For the inventive section 3, the penetration at 25 ° C. was measured.
【0058】次に、比較区3として、150℃に加熱し
た強制劣化させたストレートアスファルト(針入度3
1)100部に、アスファルト再生油8.6部(重量
比)を加え混合後、恒温槽に入れ130℃にて20分静
置した。Next, as a comparative section 3, forcibly deteriorated straight asphalt heated to 150 ° C. (penetration 3
1) 8.6 parts (weight ratio) of asphalt regenerated oil was added to 100 parts and mixed, then placed in a thermostat and allowed to stand at 130 ° C for 20 minutes.
【0059】これを針入度測定用の小容器に分取し蓋を
し、60℃の恒温槽に入れて静置することで、実験レベ
ルのアスファルト舗装を形成し、経日ごとに取り出し、
比較区3について、25℃における針入度を測定した。This was dispensed into a small container for measuring penetration, covered, placed in a constant temperature bath at 60 ° C. and allowed to stand, thereby forming an experimental-grade asphalt pavement.
For Comparative Section 3, the penetration at 25 ° C. was measured.
【0060】さらに、比較区4として、150℃に加熱
した強制劣化させたストレートアスファルト(針入度3
1)を恒温槽に入れ130℃にて20分静置した。Further, as a comparative section 4, forcibly deteriorated straight asphalt heated to 150 ° C. (penetration 3
1) was placed in a thermostat and allowed to stand at 130 ° C. for 20 minutes.
【0061】これを針入度測定用の小容器に分取し蓋を
し、60℃の恒温槽に入れて静置することで、実験レベ
ルのアスファルト舗装を形成し、経日ごとに取り出し、
比較区4について、25℃における針入度を測定した。This was dispensed into a small container for measuring the penetration, covered, placed in a thermostat at 60 ° C. and allowed to stand, thereby forming an experimental-grade asphalt pavement.
About the comparative section 4, the penetration at 25 degreeC was measured.
【0062】測定の結果は、次のとおりであった。The results of the measurement were as follows.
【0063】本発明区3は、直後「64」、1日後「6
4」、3日後「62」、7日後「63」であり、7日後
の針入度残留率は98%であった。In the present invention zone 3, immediately after “64”, one day later “6”
"4", "62" after 3 days, "63" after 7 days, and the penetration penetration rate after 7 days was 98%.
【0064】これに対し、比較区3は、直後「65」、
1日後「60」、3日後「58」、7日後「54」であ
り、7日後の針入度残留率は83%であった。On the other hand, the comparison section 3 immediately follows “65”,
It was "60" after 1 day, "58" after 3 days, and "54" after 7 days, and the penetration penetration rate after 7 days was 83%.
【0065】また、比較区4は、直後「31」、1日後
「29」、3日後「26」、7日後「24」であり、7
日後の針入度残留率は77%であった。The comparison section 4 is “31” immediately after, “29” after one day, “26” after three days, and “24” after seven days.
The penetration rate after 77 days was 77%.
【0066】この結果、本発明区3が、通常使用される
アスファルト再生油を使用した比較区3よりも7日後の
針入度が明らかに高く、針入度改良材が、再生アスファ
ルトに対しても効果的であることが確認できる。As a result, the section 3 of the present invention had a clearly higher penetration after 7 days than the comparison section 3 using a normally used asphalt regenerated oil, and the penetration improving material showed no improvement in the recycled asphalt. Can be confirmed to be effective.
【0067】[0067]
【0068】本発明によると、アスファルト舗装の長寿
命化を図ることができ、しかも、安価かつ容易にアスフ
ァルト舗装が施工可能である。According to the present invention, the life of asphalt pavement can be prolonged, and the asphalt pavement can be constructed easily at low cost.
【0069】即ち、本発明に係る針入度改良材をアスフ
ァルト舗装の際に使用すると、アスファルト舗装の寿命
延長を計ることができ、特に最近普及しつつある路上表
層再生工法に使用すると効果が著しい。なお、針入度改
良材は安価な多孔性物質とアスファルト改質油により容
易に製造できるので、本発明に係るアスファルト舗装方
法の普及が期待される。That is, when the penetration-improving material according to the present invention is used for asphalt pavement, the life of the asphalt pavement can be extended, and the effect is remarkable particularly when it is used for a road surface regeneration method which has recently become popular. . Since the penetration improving material can be easily produced by using an inexpensive porous substance and asphalt reforming oil, the asphalt pavement method according to the present invention is expected to spread.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 後藤 征治 大分県速見郡日出町大字豊岡268番地の 1 (72)発明者 帆苅 浩三 新潟県新潟市新通西1丁目6−15 (72)発明者 田口 仁 新潟県新潟市五十嵐3の町9480−13 (56)参考文献 特開 平4−155003(JP,A) 特公 平2−20762(JP,B2) (58)調査した分野(Int.Cl.7,DB名) E01C 7/18 - 7/26 C08L 95/00 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiji Goto 268 Toyooka, Oji, Hiji-cho, Hayami-gun, Oita 1 (72) Inventor Kozo Hokari 1-6-15 Niidori Nishi, Niigata City, Niigata Prefecture (72) Inventor Hitoshi Taguchi 9480-13 Igarashi 3 Town, Niigata City, Niigata Prefecture (56) References JP-A-4-155003 (JP, A) JP-B-2-20762 (JP, B2) (58) Fields investigated (Int.Cl) .7, DB name) E01C 7 /18-7/26 C08L 95/00
Claims (2)
生油を含浸、吸着させた多孔性物質からなる針入度改良
材を、アスファルト舗装体内部に含有させたことを特徴
とする、アスファルト舗装方法。1. A method for asphalt paving, characterized in that a penetration improving material comprising a porous substance impregnated and adsorbed with an oily asphalt regenerated oil which is not an emulsion type is contained inside an asphalt pavement.
生油を含浸、吸着させた多孔性物質からなる針入度改良
材。2. A penetration improving material comprising a porous substance impregnated and adsorbed with an oily asphalt regenerated oil which is not an emulsion type.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8276938A JP3066824B2 (en) | 1996-09-30 | 1996-09-30 | Asphalt pavement method and penetration improvement material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8276938A JP3066824B2 (en) | 1996-09-30 | 1996-09-30 | Asphalt pavement method and penetration improvement material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10102408A JPH10102408A (en) | 1998-04-21 |
JP3066824B2 true JP3066824B2 (en) | 2000-07-17 |
Family
ID=17576505
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Application Number | Title | Priority Date | Filing Date |
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JP8276938A Expired - Fee Related JP3066824B2 (en) | 1996-09-30 | 1996-09-30 | Asphalt pavement method and penetration improvement material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3066824B2 (en) |
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1996
- 1996-09-30 JP JP8276938A patent/JP3066824B2/en not_active Expired - Fee Related
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JPH10102408A (en) | 1998-04-21 |
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