JPH01126371A - Cushioning asphalt composition - Google Patents
Cushioning asphalt compositionInfo
- Publication number
- JPH01126371A JPH01126371A JP28483487A JP28483487A JPH01126371A JP H01126371 A JPH01126371 A JP H01126371A JP 28483487 A JP28483487 A JP 28483487A JP 28483487 A JP28483487 A JP 28483487A JP H01126371 A JPH01126371 A JP H01126371A
- Authority
- JP
- Japan
- Prior art keywords
- asphalt
- mixture
- composition
- thermoplastic elastomer
- asphalt composition
- 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.)
- Pending
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 52
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 239000010692 aromatic oil Substances 0.000 claims abstract description 11
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 11
- 229920001194 natural rubber Polymers 0.000 claims abstract description 11
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 11
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 9
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 9
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 4
- 238000013019 agitation Methods 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000005060 rubber Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- 235000019589 hardness Nutrition 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（技術分野）
この発明は、緩衝性アスファルト組成物に関するもので
ある。さらに詳しくは、この発明は、アスファルト舗装
、セメント・コンクリート構造物等の広い用途に有用な
Ｍｆｌｉ性に優れたアスファルト組成物とその製造方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) This invention relates to a buffered asphalt composition. More specifically, the present invention relates to an asphalt composition with excellent Mfli properties useful for a wide range of applications such as asphalt pavement and cement/concrete structures, and a method for producing the same.
（背景技術）
アスファルト舗装やセメント・コンクリート舗装が数ケ
年にわたって供用されると種々の損傷が現われ始める。(Background Art) When asphalt pavement or cement/concrete pavement is used for several years, various types of damage begin to appear.
この損傷の一つにクラックの発生がある、クラック発生
の原因には種々のものが考えられるが、舗装材料の不均
一性、路盤の強度の不足、交通荷重の急増などによる場
合が多い。One type of this damage is the occurrence of cracks. There are various possible causes for the occurrence of cracks, but they are often due to non-uniformity of the pavement material, insufficient strength of the roadbed, rapid increase in traffic load, etc.
このクラックの発生については、たとえ初めに数−の小
さなりラックでも雨水の浸入や、応力の集中により、短
期間でその損傷は大きく拡大する。When this crack occurs, even if it is initially a few small racks, the damage will greatly expand in a short period of time due to the infiltration of rainwater and concentration of stress.
このため、クラックに対する補修は、舗装の損傷を初期
の段階で防止する重要な役割を果たす。Therefore, crack repair plays an important role in preventing pavement damage at an early stage.
従来、このようなりラックの補修については、シールコ
ート、アーマ−コート、注入工法、シート貼付は工法な
どが採用されてきている。シールコート、アーマ−コー
ト、ゴム系アスファルトを用いた注入工法、アスファル
ト含浸不織布の貼付は工法は、その各々によって、物理
化学的性質や適用対象に特徴を有するものであるが、不
織布やゴムシートなどを用いる場合には、゛これらは衝
撃分散面積が小さく、衝撃強度の吸収も小さいという欠
点があり、また、シールコート、アーマ−コートの場合
にもこれらの層の骨材が噛み合って生ずると考えられる
衝撃に対するＭ階柱が良好でないという問題を有してい
る。Hitherto, for repairing such racks, seal coat, armor coat, injection method, sheet pasting method, etc. have been adopted. Seal coats, armor coats, injection methods using rubber-based asphalt, and pasting methods of asphalt-impregnated nonwoven fabrics each have their own characteristics in terms of physicochemical properties and application target, but nonwoven fabrics, rubber sheets, etc. When using ``These have the disadvantage that the impact dispersion area is small and the absorption of impact strength is also low.Also, in the case of seal coat and armor coat, it is thought that the aggregates of these layers interlock with each other. There is a problem in that the M-storey columns are not good against the impact caused by the impact.
このような欠点を改善するものとして、緩衝性の大きな
施工材料と施工方法が提案されてきている。たとえば、
最近注目されているものとして、発泡ポリエチレンシー
トを用いる方法が提案されているが、この方法は貼付は
工法でしか使用できないため、その使用には制約がある
。In order to improve these drawbacks, construction materials and construction methods with high cushioning properties have been proposed. for example,
A method using a foamed polyethylene sheet has been proposed as one that has recently attracted attention, but this method has limitations in its use because it can only be used as a construction method.
また、緩衝性のあるアスファルト組成物についても提′
案がなされている。Also, proposals are made regarding asphalt compositions with buffering properties.
A plan is being made.
一般に石油アスファルトは高温下で液状を示し、低温下
では固形状に変化する。道路用のバインダーとして使用
する場合には、高温で、液体状態において施工に用いる
。アスファルトは使用時に、固形から粘弾性領域の挙動
をするといわれており、従来より、この粘弾性にかかわ
る機能の向上を図る目的でアスファルトの改質が行われ
てきている。Generally, petroleum asphalt exhibits a liquid state at high temperatures, and changes to a solid state at low temperatures. When used as a road binder, it is used in construction at high temperatures and in a liquid state. It is said that asphalt behaves in a range from solid to viscoelastic during use, and asphalt has been modified to improve its viscoelasticity-related functions.
この改質についての開発の方向は、（ア）フィラーなど
のアスファルトに混入して感温性を鈍化させる、（イ）
アスファルトに高分子樹脂を相溶させ粘弾性を改善する
、（つ）アスファルトに添加した高分子樹脂の架橋反応
により粘弾性を改善する、などの方法である。The direction of development regarding this modification is (a) mixing fillers into asphalt to reduce its temperature sensitivity; (b)
These methods include improving viscoelasticity by dissolving a polymeric resin in asphalt, and (2) improving viscoelasticity through a crosslinking reaction of a polymeric resin added to asphalt.
しかしながら、これまでの検討によっても、耐＊ｎ性に
優れた緩衝性アスファルト組成物はいまだに実現されて
きていない。However, even with past studies, a buffering asphalt composition with excellent *n resistance has not yet been realized.
施工性が良好で、適用範囲の広いアスファルトの特徴を
生かした、１ｆｆｌ性に優れたアス・ファルト組成物の
実現が望まれていた。It has been desired to realize an asphalt composition with excellent 1ffl properties that takes advantage of the characteristics of asphalt, which has good workability and a wide range of applications.
（発明の目的）
この発明は、以上の通りの事情に鑑みてなされたもので
あり、従来の補修材およびその工法の欠点を改善し、施
工性が良好で、広い範囲に適用することのできる、Ｍｆ
ｌｌ性に優れたアスファルト組成物を提供することを目
的としている。(Object of the invention) This invention was made in view of the above circumstances, and it improves the drawbacks of conventional repair materials and their construction methods, has good workability, and can be applied to a wide range of areas. , Mf.
The object of the present invention is to provide an asphalt composition with excellent hardness.
（発明の開示）
この発明の緩衝性アスファルト組成物は、上記の目的を
実現するために、ストレートアスファルト６０／８０．
８０／１００またはブローンアスファルト１０／２０．
２０／３０の混合物、芳香族オイル、天然ゴムおよび合
成ゴムの混合チップ、および熱可塑性エラストマーから
なることを特徴としている。(Disclosure of the Invention) In order to achieve the above object, the buffered asphalt composition of the present invention is a straight asphalt 60/80.
80/100 or blown asphalt 10/20.
It is characterized by consisting of a 20/30 mixture, aromatic oil, mixed chips of natural and synthetic rubber, and thermoplastic elastomer.
また、この発明は、ストレートアスファルト６０／８０
．８０／１０Ｇまたはブローンアスファルト１０／２０
．２０／３０の混合物に芳香族オイルを加えて１５０〜
２５０℃に加熱し、熱可塑性エラストマーを溶解した後
に天然ゴムおよび合成ゴムの混合チップを混合すること
を特徴とするｇ惰性アスファル８組成物の製造方法も提
供するものである。In addition, this invention applies to straight asphalt 60/80
．． 80/10G or blown asphalt 10/20
．． Add aromatic oil to 20/30 mixture and make 150~
There is also provided a method for producing a g-free asphalt 8 composition, which comprises heating to 250° C. to dissolve the thermoplastic elastomer and then mixing mixed chips of natural rubber and synthetic rubber.
ストレートアスファルト６０／８０．８０／１００また
はブローンアスファルト１０／２０．２０／３０の混合
物は、１：１の範囲において用いることが好ましく、ま
た芳香族オイルについては、芳香族分が４０〜６０％で
あって、２００〜Ｓ Ｏ０ｃｓｔ程度のものを用いるの
が好ましい。Mixtures of straight asphalt 60/80.80/100 or blown asphalt 10/20.20/30 are preferably used in the 1:1 range, and for aromatic oils, the aromatic content is between 40 and 60%. Therefore, it is preferable to use one having a value of about 200 to SO0cst.
天然ゴムと合成ゴムについては、その比率がｌ：１〜３
：１の割合で、〜５ＩＩＩＩおよび〜３■のチップを用
いるのが好ましい、もちろん、これらの態様は限定的な
ものではない。For natural rubber and synthetic rubber, the ratio is l:1~3
It is preferred to use ~5III and ~3■ chips in a ratio of :1; of course, these embodiments are not limiting.
組成物とするための以上の成分の組成比については、た
とえば、
（１）アスファルト ５５〜７０（重量部）（２）
芳香族オイル １０〜１６
（３）ゴムチップ １６〜２３
（４）熱可塑性エラストマー ４〜６
程度の割合とすることができる。Regarding the composition ratio of the above components to make the composition, for example, (1) Asphalt 55-70 (parts by weight) (2)
Aromatic oil: 10-16 (3) Rubber chips: 16-23 (4) Thermoplastic elastomer: 4-6.
このような構成からなるこの発明のアスファルト組成物
は、柔軟なアスファルトに、硬度、さらには粒径の異な
るゴムチップ、および繊維状に膨潤した天然ゴム、そし
て熱可塑性エラストマーが混在した状態にあり、この組
成によって、衝撃強度を緩和する。The asphalt composition of the present invention having such a structure has a mixture of flexible asphalt, rubber chips with different hardnesses and particle sizes, fibrous swollen natural rubber, and a thermoplastic elastomer. Impact strength is reduced depending on the composition.
この発明のアスファルト組成物については、その製造に
おいて、たとえばアスファルトに芳香族オイルを加えて
加熱し、熱可塑性エラストマーを加えて撹拌し、溶解す
るが、その場合の加熱温度は、１５０〜２５０℃程度、
より好ましくは１８０〜２００℃とすることができる。Regarding the production of the asphalt composition of the present invention, for example, an aromatic oil is added to asphalt and heated, and a thermoplastic elastomer is added and stirred to dissolve it. ,
More preferably, the temperature can be 180 to 200°C.
次いで、天然ゴムおよびＳＢＲなどの合成ゴムのチップ
を加熱条件下に撹拌混合するが、この場合は２００〜２
４０℃の温度に加熱し、４〜６時間混合することができ
る。Next, chips of natural rubber and synthetic rubber such as SBR are stirred and mixed under heating conditions.
It can be heated to a temperature of 40°C and mixed for 4-6 hours.
熱可塑性エラストマーの種類については格別限定的では
ない、エチレン系、プロピレン系、ビニル系などの適宜
なエラストマーを用いることができる。The type of thermoplastic elastomer is not particularly limited, and suitable elastomers such as ethylene-based, propylene-based, and vinyl-based elastomers can be used.
またこの発明のアスファルト組成物は、使用にあたって
はスプレーによる散布、コーターによる塗布、シート成
型体による施工などが可能で、道路ばかりでなく、セメ
ント・コンクリート構造体の広い対象用途に用いること
ができる。In addition, the asphalt composition of the present invention can be applied by spraying, applying with a coater, and applying as a sheet molding, and can be used not only for roads but also for a wide range of applications such as cement and concrete structures.
このアスファルト組成物の緩衝性は極めて（ｆれており
、衝撃分散面積は大きく、衝撃強度の吸収も大きい。This asphalt composition has extremely high buffering properties, has a large impact dispersion area, and has a large impact strength absorption.
次にこの発明の実施例を示し、さらに詳しくこの発明に
ついて説明する。Next, examples of the present invention will be shown and the present invention will be explained in more detail.
実施例
ストレートアスファルト６０／８０の混合物約６０重量
部、芳香族分４０％で３ＱＱ Ｃｆ；ｔの芳香族オイル
約１５重量部、天然ゴムおよびＳＢＲゴム３：１のチッ
プ（４閣）約２０重量部、および熱可塑性エラストマー
５重量部からなるアスファルト組成物を製造した。EXAMPLE About 60 parts by weight of a mixture of straight asphalt 60/80, about 15 parts by weight of aromatic oil of 3QQ Cf;t with 40% aromatic content, about 20 parts by weight of chips (4 cabinets) of natural rubber and SBR rubber 3:1. and 5 parts by weight of a thermoplastic elastomer.
この組成物について物性を評価した。比較のためにブロ
ーンアスファルト（２０／４０）についても評価した。The physical properties of this composition were evaluated. For comparison, blown asphalt (20/40) was also evaluated.
その結果を、次の表１に示した。The results are shown in Table 1 below.
この表１から明らかなように、この、発明の組成物の場
合には伸度、粘度ともに大きく、かつ曲げ試験において
もひびの発生や剥離もない。As is clear from Table 1, the composition of the invention has both high elongation and high viscosity, and also shows no cracking or peeling in the bending test.
また、この発明の組成物について、ｙＩ街性を測定した
。供試体の大きさはマーシャル試験用供試体、アスコン
密粒度のものとし、落下荷重は、荷重４．７ｋｇ、高さ
１．２ｍとした。Furthermore, the yI streetability of the composition of the present invention was measured. The size of the specimen was a Marshall test specimen with Ascon dense grain size, and the falling load was 4.7 kg and 1.2 m in height.
衝撃強度およびＷＩ撃分散面積は超低圧用感圧シート（
富士フィルム製）によって測定した。The impact strength and WI impact dispersion area are determined by ultra-low pressure pressure sensitive sheet (
(manufactured by Fuji Film).
その結果を示したものが表２である。Table 2 shows the results.
衝撃分散面積は７８．５−以上と極めて大きく、衝撃強
度３ｋｇ／ａａと、衝撃の吸収は極めて大きい。The impact dispersion area is extremely large at 78.5 or more, and the impact strength is 3 kg/aa, which is extremely high in impact absorption.
表 ２
（発明の効果）
この発明によって、以上詳しく説明した通り、耐衝撃性
に優れた緩衝性アスファルト組成物が提供される。Table 2 (Effects of the Invention) As explained in detail above, the present invention provides a cushioning asphalt composition with excellent impact resistance.
しかもこの組成物は、施工性が良好で、かつ広い適用対
象領域を有している。Moreover, this composition has good workability and has a wide range of applications.
Claims (5)
０またはブローンアスファルト１０／２０、２０／３０
の混合物、芳香族オイル、天然ゴムおよび合成ゴムの混
合チップ、および熱可塑性エラストマーからなることを
特徴とする緩衝性アスファルト組成物。(1) Straight asphalt 60/80, 80/10
0 or blown asphalt 10/20, 20/30
A buffered asphalt composition characterized in that it consists of a mixture of aromatic oil, mixed chips of natural and synthetic rubber, and a thermoplastic elastomer.
０またはブローンアスファルト１０／２０、２０／３０
の１：０〜２：１の混合物を含有する特許請求の範囲第
（１）項記載の緩衝性アスファルト組成物。(2) Straight asphalt 60/80, 80/10
0 or blown asphalt 10/20, 20/30
The buffered asphalt composition according to claim 1, comprising a 1:0 to 2:1 mixture of:
の芳香族オイルを含有する特許請求の範囲第（１）項記
載の緩衝性アスファルト組成物。(3) Aromatic content is 40-60%, 200-500cst
The buffered asphalt composition according to claim (1), which contains an aromatic oil.
チップを含有する特許請求の範囲第（１）項記載の緩衝
性アスファルト組成物。(4) The cushioning asphalt composition according to claim (1), which contains mixed chips of natural rubber and synthetic rubber in a ratio of 1:1 to 3:1.
０またはブローンアスファルト１０／２０、２０／３０
の混合物に芳香族オイルを加えて１５０〜２５０℃に加
熱し、熱可塑性エラストマーを溶解した後に天然ゴムお
よび合成ゴムの混合チップを混合することを特徴とする
緩衝性アスファルト組成物の製造方法。(5) Straight asphalt 60/80, 80/10
0 or blown asphalt 10/20, 20/30
A method for producing a buffered asphalt composition, which comprises adding aromatic oil to the mixture and heating it to 150 to 250°C to dissolve the thermoplastic elastomer, and then mixing mixed chips of natural rubber and synthetic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28483487A JPH01126371A (en) | 1987-11-11 | 1987-11-11 | Cushioning asphalt composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28483487A JPH01126371A (en) | 1987-11-11 | 1987-11-11 | Cushioning asphalt composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01126371A true JPH01126371A (en) | 1989-05-18 |
Family
ID=17683616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28483487A Pending JPH01126371A (en) | 1987-11-11 | 1987-11-11 | Cushioning asphalt composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01126371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641834A1 (en) * | 1993-07-29 | 1995-03-08 | Fina Research S.A. | Bituminous compositions for sound damping materials |
-
1987
- 1987-11-11 JP JP28483487A patent/JPH01126371A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641834A1 (en) * | 1993-07-29 | 1995-03-08 | Fina Research S.A. | Bituminous compositions for sound damping materials |
| BE1007336A3 (en) * | 1993-07-29 | 1995-05-23 | Fina Research | Bituminous compositions for materials sound. |
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