JP2001011812A - Road pavement material - Google Patents

Road pavement material

Info

Publication number
JP2001011812A
JP2001011812A JP11181458A JP18145899A JP2001011812A JP 2001011812 A JP2001011812 A JP 2001011812A JP 11181458 A JP11181458 A JP 11181458A JP 18145899 A JP18145899 A JP 18145899A JP 2001011812 A JP2001011812 A JP 2001011812A
Authority
JP
Japan
Prior art keywords
aggregate
particle size
less
resin
water
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
Application number
JP11181458A
Other languages
Japanese (ja)
Inventor
Tadami Kamaishi
忠美 釜石
Hideharu Osada
秀晴 長田
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.)
Osada Giken Co Ltd
Toray Industries Inc
Original Assignee
Osada Giken Co Ltd
Toray Industries Inc
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 Osada Giken Co Ltd, Toray Industries Inc filed Critical Osada Giken Co Ltd
Priority to JP11181458A priority Critical patent/JP2001011812A/en
Publication of JP2001011812A publication Critical patent/JP2001011812A/en
Pending legal-status Critical Current

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Landscapes

  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To rigidly fix aggregate for an asphalt portion while ensuring water- permeability, by coating and infiltrating a resin on and through the surface of a road to protect a resin layer, and ensuring the water-permeable performance of the resin layer. SOLUTION: A pavement material 1 contains 60 to 90 wt.% aggregate with a particle size of 3.0 to 0.4 mm, and 10 to 40 wt.% aggregate with a particle size of less than 0.4 mm. Alternatively, the mixing ratio in the material 1 may be set so as to assume the apparent volume at which aggregate with a particle size of 3.0 mm or less roughly fills gaps in aggregate with a particle size of 10 mm or more. In this case, the pavement material 1 contains 30 to 50 wt.% aggregate with a particle size of 3.0 to 0.8 mm and a particle size of less than 0.8 to 0.4 mm, 5 to 15 wt.% aggregate with a particle size of less than 0.4 to 0.2 mm, and 2 to 15 wt.% aggregate with a particle size of less than 0.2 mm. Particularly, the material 1 containing 35 to 45 wt.% aggregate with a particle size of 1.2 to 0.8 mm and a particle size of less than 0.8 to 0.4 mm, 7 to 15 wt.% aggregate with a particle size of less than 0.4 to 0.2 mm, and 2 to 10 wt.% aggregate with a particle size of less than 0.2 mm, is preferable. Thus, minute aggregate having a specific particle size proportion can be mixed into a resin, to thereby ensure the water-permeability and prevent clogging.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、道路の舗装材に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road paving material.

【0002】[0002]

【従来の技術】従来から道路はアスファルトで舗装され
てきた。これは、道路の表面にアスファルトと骨材(小
石)を混合したものを敷設するものである。アスファル
ト成分自体は水を透過しないため、舗装面全体として水
を透過させず、その表面上で溜るか、側溝に流れるかで
あった。しかしながら、路面上に雨水が滞留すると、そ
れが膜状となり、水はねや水しぶきにより視界不良とな
る。また、ハイドロプレーニング現象や夜間雨天時の視
認性の低下などいずれも事故につながり非常に危険であ
る。また、下方への水の浸透がなく側溝から下流に流れ
るため、地下水が減少するとともに地盤沈下等も生じて
いた。更に、地下水の減少は周辺の植物にも悪影響を及
ぼしている。
2. Description of the Related Art Conventionally, roads have been paved with asphalt. In this method, a mixture of asphalt and aggregate (pebble) is laid on the surface of a road. Since the asphalt component itself does not transmit water, the entire pavement surface did not transmit water, and either accumulated on the surface or flowed into the gutter. However, if rainwater stays on the road surface, it forms a film, and the visibility becomes poor due to splashing or splashing of water. In addition, both the hydroplaning phenomenon and the reduced visibility in rainy weather at night lead to accidents and are extremely dangerous. In addition, since there was no permeation of water downward and the water flowed downstream from the gutter, groundwater was reduced and land subsidence occurred. In addition, the decrease in groundwater is also affecting surrounding plants.

【0003】そこで、舗装面に通水性(透水性や排水
性)を持たせ、雨水を吸収し、表面に水膜を作らせない
よう、所謂通水性アスファルトが薦められてきている。
これは、骨材として粗骨材の粒度を大きく、且つ粒度の
範囲を狭くし、アスファルトとしては耐久性に優れた高
粘度改質アスファルト等を使用するものである。それに
よって、薄膜に被覆された骨材同士を転圧、固着させ通
常の舗装よりも大きい連続した間隙を設けて、その間を
水が透過するように構成したものである。
Therefore, so-called water-permeable asphalt has been recommended so that the pavement surface has water permeability (water permeability and drainage), absorbs rainwater, and does not form a water film on the surface.
In this method, a coarse aggregate having a large particle size and a narrow particle size range is used as an aggregate, and a high-viscosity modified asphalt having excellent durability is used as an asphalt. Thus, the aggregates coated with the thin film are rolled and fixed to each other to form a continuous gap larger than that of a normal pavement, and water is transmitted between the gaps.

【0004】しかしながら、この方法ではアスファルト
のダレ防止のため被覆厚さが薄く、骨材同士の接着力が
弱く重車両のもとではスピードや制動荷重などによりタ
イヤによって表面骨材が離反し、飛散させられ、結果と
して肌あれや凹部の発生となることが多い。この現象は
特に冬に顕著である。一旦凹部となると、その縁部の飛
散が一層加速されることとなる。このため、頻繁に(毎
年又は2年に一度程度)路面を補修しなければならなく
なる。交通規制等による交通渋滞等の原因となるばかり
か、費用も相当なものである。
However, in this method, the thickness of the coating is small to prevent asphalt dripping, the adhesion between the aggregates is weak, and under heavy vehicles, the surface aggregates are separated by the tires due to speed, braking load, etc., and the aggregates are scattered. This often results in rough skin and concave portions. This phenomenon is particularly noticeable in winter. Once the recess is formed, the scattering of the edge is further accelerated. Therefore, the road surface must be repaired frequently (about every two years or every two years). Not only causes traffic congestion due to traffic regulations and the like, but also costs are considerable.

【0005】このような欠点を解消するため、通水性ア
スファルト舗装表面の結合力を強化する目的で、樹脂を
表面に塗布浸透させて樹脂層で保護することも考えられ
る。そして、この樹脂層に通水機能を残しておけば、通
水性を確保しつつアスファルト部分の骨材を強固に固定
するというものである。
[0005] In order to solve such drawbacks, it is conceivable to apply a resin to the surface of a water-permeable asphalt pavement and to infiltrate the surface with a resin layer so as to protect the surface with a resin layer in order to strengthen the bonding strength of the surface of the water-permeable asphalt pavement. If the water-permeable function is left in this resin layer, the aggregate in the asphalt portion is firmly fixed while ensuring the water permeability.

【0006】[0006]

【発明が解決しようとする課題】しかし、この樹脂層付
加方式では、アスファルトのみよりは骨材の離反が少な
いとはいえ、樹脂層の耐摩耗性、耐候性が小さいという
欠点がある。勿論、また通水性を持たせるためには厚く
塗布できず補強効果が小さくなり、空隙詰まりも多い。
However, this resin layer addition method has a drawback that the abrasion resistance and weather resistance of the resin layer are small although the separation of the aggregate is smaller than that of asphalt alone. Needless to say, in order to impart water permeability, it cannot be applied thickly, so that the reinforcing effect is small and voids are often clogged.

【0007】結局、強固で長持ちするような通水性舗装
は現在では出現しておらず、そのため通水性舗装が好ま
しいにもかかわらず充分実施されていないのである。
[0007] After all, strong and long-lasting water-permeable pavements have not emerged at the present time, and as a result, water-permeable pavements have not been sufficiently implemented, despite being preferred.

【0008】また、所謂樹脂舗装と呼ばれる舗装材があ
る。これは、樹脂と骨材を混合したもので、基本的にア
スファルトを使用しない。樹脂はアスファルトと比較し
て接着力が強いため骨材の剥脱や飛散は少ない。
There is also a pavement material called so-called resin pavement. This is a mixture of resin and aggregate and basically does not use asphalt. Since the resin has a stronger adhesive force than asphalt, exfoliation and scattering of the aggregate are small.

【0009】しかし、樹脂は確実に硬化させるための条
件が厳しく、取扱いは難しいことのほかに、材料(骨
材)や施工面が濡れているとアスファルト混合物同様施
工ができないという欠点を有している。
[0009] However, the resin has severe conditions for hardening it, and is difficult to handle. Besides, if the material (aggregate) or the working surface is wet, it cannot be worked as well as the asphalt mixture. I have.

【0010】新設のアスファルト排水舗装現場では、舗
装用の熱アスファルトの面転圧平坦化ローラーを使用
し、散水しながら施工する。アスファルト排水舗装は強
度が低いので、ここで引き続き空隙詰まりと骨材飛散防
止のための表面強化工法を行いたいが、水の存在のため
施工ができない。そこで後日、新設路面が乾燥するのを
待って再施工することになるが、これは交通開放の遅れ
と不経済性の点から大きな損失とならざるを得ない。
At a newly constructed asphalt drainage pavement site, a hot asphalt surface rolling flattening roller for pavement is used while water is being sprinkled. Asphalt drainage pavement has low strength, so we would like to continue the surface reinforcement method to prevent void clogging and aggregate scattering here, but construction is not possible due to the presence of water. Therefore, the rebuilding will be performed at a later date after the new road surface is dried, but this will be a big loss due to delays in opening the traffic and uneconomical points.

【0011】また、既設の道路を補修する場合において
も、降雨により路面が水に濡れて施工できないという、
大きく天候に左右される問題がある。
In addition, even when repairing an existing road, the road surface is wet with water due to rain and cannot be constructed.
There is a problem that depends largely on the weather.

【0012】[0012]

【課題を解決するための手段】そこで、本発明者は従来
の樹脂舗装の水の存在に弱いという欠点を大きく改良
し、空隙詰まりを改善することによって通水性は確保
し、摩耗が少なく、骨材の飛散が少なく、空隙詰まりも
大きく改良され、且つ湿潤した骨材でもそのままの状態
で使用でき、更に施工面が濡れていても施工できる、従
来のものに比べ現場実用性(施工性、経済性)に著しく
優れる画期的な舗装材を開発した。
The inventor of the present invention has greatly improved the disadvantage that conventional resin pavements are weak to the presence of water, and has improved void clogging to ensure water permeability, reduce abrasion, and reduce bone loss. Less scattering of material, greatly improved void clogging, and can be used as it is even with wet aggregate, and can be applied even when the construction surface is wet. Epoch-making pavement material with remarkably excellent properties.

【0013】このように、本発明者は鋭意研究の結果、
本発明の道路の舗装材を完成させたものであり、その特
徴とするところは、樹脂と骨材を混合した舗装材であっ
て、該骨材の粒度分布が、次の範囲内であり、 (1)粒径が3.0〜0.4mmの骨材が60〜90重
量% (2)粒径が0.4mm未満の骨材が10〜40重量% 且つ、該樹脂は水の存在下でも硬化する樹脂である点に
ある。
As described above, the inventor of the present invention has conducted intensive studies,
The road pavement material of the present invention has been completed, and the feature thereof is a pavement material in which resin and aggregate are mixed, and the particle size distribution of the aggregate is within the following range: (1) Aggregate having a particle diameter of 3.0 to 0.4 mm is 60 to 90% by weight. (2) Aggregate having a particle diameter of less than 0.4 mm is 10 to 40% by weight. However, it is a cured resin.

【0014】[0014]

【発明の実施の形態】本発明に使用する樹脂は、水の存
在下でも硬化する樹脂である。水の存在下でも硬化する
樹脂とは、硬化前の樹脂が水分と接していても硬化阻害
を受けないものをいう。本発明では、このようなもので
あれば何でもよいが、ポリサルファイド変性した樹脂が
好適である。これは、主鎖又は側鎖中に、Sを含む単位
が1又は複数含まれているものである。勿論、ポリマー
は種々の分子量の集まりであり、モノマー単位中のS含
量が異なる場合があるため、Sの平均量としては、0〜
3程度の単位ということとなる。更に詳しくは、−X−
(R1 −Sa b −R2−Y−(ポリサルファイド連
鎖)という基が主鎖又は側鎖に含まれているものであ
る。ここで、R1 、R2 は、2価のメチレン基 (−CH
2 −)、2価のジメチルエーテル基(−CH2 OCH2
−)、2価のイソプロパノール基(−CH2 CH(O
H)CH2 −)、2価のエタノール基(−CH2 CH
(OH)−)、また、(−CH2 CH2 OCH2 OCH
2 CH2 −)、(−CH2 CH2 O−)等であり、これ
らは1又は複数でよく、組み合わされたものでもよい。
また、R1 、R2 は同じでも異なっていてもよい。X及
びYは、−S−、−O−、−NH−から選ばれる基であ
る。a は、繰り返し単位ごとに0〜5の整数であり、b
は1〜50の整数である。但し、a が繰り返し単位すべ
てについて0の場合、X又はYの少なくとも一方は−S
−基である。a は、1〜2.5が好ましい。以上のポリ
サルファイド連鎖が樹脂の構造中のどこかに入っていれ
ばよい。
DETAILED DESCRIPTION OF THE INVENTION The resin used in the present invention is a resin which cures even in the presence of water. The resin that cures even in the presence of water refers to a resin that is not cured even if the resin before curing is in contact with moisture. In the present invention, any resin may be used as long as it is such, but a resin modified with polysulfide is preferable. This is one in which one or more units containing S are contained in the main chain or the side chain. Of course, the polymer is a collection of various molecular weights, and the S content in the monomer unit may be different.
It is about 3 units. More specifically, -X-
(R 1 -S a ) b -R 2 -Y- (polysulfide linkage) is contained in the main chain or the side chain. Here, R 1 and R 2 are divalent methylene groups (—CH
2- ), a divalent dimethyl ether group (—CH 2 OCH 2
−) Divalent isopropanol group (—CH 2 CH (O
H) CH 2 —), divalent ethanol group (—CH 2 CH)
(OH) -), also, (- CH 2 CH 2 OCH 2 OCH
2 CH 2 —), (—CH 2 CH 2 O—), etc., which may be one or more or a combination thereof.
Further, R 1 and R 2 may be the same or different. X and Y are groups selected from -S-, -O-, and -NH-. a is an integer of 0 to 5 for each repeating unit; b
Is an integer of 1 to 50. However, when a is 0 for all repeating units, at least one of X or Y is -S
-A group. a is preferably 1 to 2.5. It is only necessary that the above-mentioned polysulfide chain is located somewhere in the structure of the resin.

【0015】合成法は、例えば、エポキシの場合、反応
可能な官能基を有するイオウ含有モノマー又はオリゴマ
ー(プレポリマーも含む)と、分子内に2個以上のエポ
キシ基を有するエポキシプレポリマーとの付加反応又は
例えばポリサルファイドポリチオールとエポキシプレポ
リマーとの付加反応等によって合成される。
[0015] For example, in the case of epoxy, the synthesis method comprises adding a sulfur-containing monomer or oligomer having a reactive functional group (including a prepolymer) and an epoxy prepolymer having two or more epoxy groups in a molecule. It is synthesized by a reaction or, for example, an addition reaction of a polysulfide polythiol and an epoxy prepolymer.

【0016】ウレタンの場合には、1液型ウレタンでは
分子の一部ないし全部の主鎖中にポリサルファイド連鎖
を含み、2液型ウレタンでは、プレポリマー中及び/又
は硬化剤中に同様にポリサルファイド連鎖を含めばよ
い。2液型の場合では、ポリサルファイド樹脂(末端S
H)自体を硬化剤としてもよい。
In the case of urethane, one-component urethane contains a polysulfide chain in part or all of the main chain of the molecule. Should be included. In the case of the two-pack type, the polysulfide resin (terminal S
H) may itself be a curing agent.

【0017】骨材とは小さな石、砂、砂利、セラミック
やその粉砕物、破砕品等の無機物ばかりでなく、ゴムチ
ップ、プラスチック等の有機物でもよい。粒といっても
その形状はどのようなものでもよい。球以外の場合に
は、径という表現はおおよその外形サイズという意味で
ある。特に本発明では、大きい骨材と小さい骨材がある
が、大きな骨材を天然石として、小さな骨材をセラミッ
クの粉末、破砕物とするという方法もある。これは、製
造や入手の容易性からである。
The aggregate may be not only inorganic materials such as small stones, sand, gravel, ceramics and crushed or crushed products, but also organic materials such as rubber chips and plastics. The shape of the grains may be any shape. In the case other than a sphere, the expression diameter means an approximate outer size. In particular, in the present invention, there are a large aggregate and a small aggregate, but there is also a method in which the large aggregate is a natural stone and the small aggregate is a ceramic powder or crushed material. This is due to the ease of manufacture and availability.

【0018】本発明の道路の舗装材は樹脂と骨材を混合
したものである。混合比率は、通水性を確保する程度で
よく、通常は骨材:樹脂の比率が重量比で19/1〜2
/1程度である。比率に大きな幅があるのは、骨材が石
等のような重量物とゴムチップのような軽量のものとが
あるためである。
The road paving material of the present invention is a mixture of resin and aggregate. The mixing ratio may be such that water permeability is ensured. Usually, the ratio of aggregate: resin is 19/1 to 2 by weight.
/ 1. The ratio has a large range because aggregates include heavy materials such as stones and lightweight materials such as rubber chips.

【0019】ここでいう小さな骨材とは粒径が3.0m
m以下の骨材で粒度分布は次の通りである。即ち、3.
0〜0.4mmの骨材を60〜90重量%、0.4mm
未満の骨材を10〜40重量%混合すると、通水機能と
空隙詰まり防止機能のバランスがよく、通水性も確保さ
れ、空隙詰まりし難い。3.0〜0.4mmの骨材が9
0重量%を超えると、濾過効果が小さくなる。なぜなら
ば、発明者の実験から一般道路の空隙詰まり物質(砂や
ゴミ等)のサイズが0.1〜0.2mmが大多数である
ことが判明したためである。また、0.4mm未満の骨
材が40重量%を超えると、通水性が減少し、通水性舗
装と言えなくなる。
The small aggregate referred to herein has a particle size of 3.0 m.
The particle size distribution is as follows for aggregates less than m. That is, 3.
60-90% by weight of 0-0.4mm aggregate, 0.4mm
When less than 10 to 40% by weight of the aggregate is mixed, the water-passing function and the function of preventing void clogging are well-balanced, water permeability is ensured, and void clogging is difficult. 3.0-0.4mm aggregates are 9
If it exceeds 0% by weight, the filtering effect will be reduced. This is because the experiments by the inventor have revealed that the majority of the materials (sand, dust, etc.) that clog the voids of general roads have a size of 0.1 to 0.2 mm. On the other hand, when the aggregate having a thickness of less than 0.4 mm exceeds 40% by weight, the water permeability decreases, and it cannot be said that the pavement is water-permeable.

【0020】更に、この骨材の粒度分布は、通水性確保
とゴミ等による空隙づまりの防止から、 (1)粒径が3.0〜0.8mmの骨材が30〜50重
量% (2)粒径が0.8mm未満〜0.4mmの骨材が30
〜50重量% (3)粒径が0.4mm未満〜0.2mmの骨材が5〜
15重量% (4)粒径が0.2mm未満の骨材が2〜15重量% が好適である。
Further, the particle size distribution of the aggregate is as follows: (1) Aggregate having a particle size of 3.0 to 0.8 mm is 30 to 50% by weight (2) in order to ensure water permeability and prevent void clogging due to dust and the like. 30 aggregates with a particle size of less than 0.8 mm to 0.4 mm
(3) Aggregate having a particle size of less than 0.4 mm to 0.2 mm is 5 to 5% by weight.
15% by weight (4) 2 to 15% by weight of aggregate having a particle size of less than 0.2 mm is preferred.

【0021】さらに、この中で特に、 (1)粒径が1.2〜0.8mmの骨材が35〜45重
量% (2)粒径が0.8mm未満〜0.4mmの骨材が35
〜45重量% (3)粒径が0.4mm未満〜0.2mmの骨材が7〜
15重量% (4)粒径が0.2mm未満の骨材が2〜10重量% の範囲が好適である。
Further, among these, (1) 35-45% by weight of aggregate having a particle size of 1.2-0.8 mm (2) Aggregate having a particle size of less than 0.8 mm-0.4 mm 35
(3) Aggregate having a particle size of less than 0.4 mm to 0.2 mm is 7 to
15% by weight (4) The range of 2 to 10% by weight of aggregate having a particle size of less than 0.2 mm is preferable.

【0022】この範囲のように、小さな骨材の粒径を
1.2mm以下にしていること、0.4mm〜1.2m
mのものを70重量%以上にし、0.4mm未満のもの
を25重量%以下にすることだけでなく、それぞれの径
の粒子の割合を規定することによって、空隙詰まりの防
止により大きな効果が得られる。
As shown in this range, the particle size of the small aggregate is set to 1.2 mm or less, and 0.4 to 1.2 m.
In addition to reducing the particle size of m to 70% by weight or more and the particle size of less than 0.4mm to 25% by weight or less, by specifying the ratio of particles of each diameter, a large effect can be obtained by preventing void clogging. Can be

【0023】樹脂と粒径が3.0mm以下の小さな骨材
を混合した樹脂モルタルに、粒径10mm以上の大きな
骨材を混合してもよい。ここでいう大きな骨材とは、通
常のアスファルト舗装の骨材のような比較的大きなもの
で、サイズ的には10mm以上のものである。しかし、
骨材であるため、サイズはスクリーン(篩)によって決
めるもので、すべてが10mm以上のものというのは実
際には製造(選択)が難しい。どうしてもそれより小さ
いものが混じってしまう。本発明ではそのようなもので
もよいのである。しかし、少なくとも粒径が10mm以
上のものが90%以上含むものが好ましい。また、更に
大きな15mm以上のものが50%以上含むものも好適
である。大きな骨材は、単粒に近いほど好適である。
A large aggregate having a particle size of 10 mm or more may be mixed with a resin mortar in which a resin and a small aggregate having a particle size of 3.0 mm or less are mixed. The large aggregate referred to here is a relatively large aggregate such as an ordinary asphalt pavement aggregate, and has a size of 10 mm or more. But,
Since it is an aggregate, the size is determined by the screen (sieve), and it is actually difficult to manufacture (select) all of them having a size of 10 mm or more. Inevitably, something smaller is mixed. In the present invention, such a thing may be used. However, those containing at least 90% of particles having a particle size of at least 10 mm are preferred. It is also preferable that the larger one having a size of 15 mm or more contains 50% or more. The larger the aggregate, the closer to a single grain, the better.

【0024】このように粒径10mm以上の大きな骨材
を混合する理由は、強度を向上させるため、樹脂量を減
らしてコストダウンを図る、作業性を向上させるため等
である。よって、混合比率としては、ごく少量混合して
も、一般的なアスファルト舗装材のように非常に多く混
合してもよい。
The reason why the large aggregate having a particle diameter of 10 mm or more is mixed is to improve the strength, reduce the amount of resin to reduce the cost, improve the workability, and the like. Therefore, as a mixing ratio, a very small amount may be mixed or a very large amount may be mixed like a general asphalt pavement material.

【0025】また、粒径10mm以上の大きな骨材の見
かけ容積がほぼ全体を占め、粒径3.0mm以下の小さ
な骨材が粒径10mm以上の大きな骨材の間隙をほぼ埋
める見かけ容積となる混合比率でもよい。粒径10mm
以上の大きな骨材の見かけ容積とは、粒径10mm以上
の大きな骨材によって定まる容積であり、その空隙率と
次の関係がある。
The apparent volume of the large aggregate having a particle size of 10 mm or more occupies almost the entirety, and the small aggregate having a particle size of 3.0 mm or less substantially fills the gap between the large aggregates having a particle size of 10 mm or more. The mixing ratio may be used. Particle size 10mm
The above-mentioned apparent volume of the large aggregate is a volume determined by the large aggregate having a particle size of 10 mm or more, and has the following relationship with the porosity.

【0026】 空隙率=(見かけ容積−実容積)/見かけ容積 ほぼ全体を占めるとは、舗装材の充填すべき面積が1m
2 で厚みが10cmならば、全体の容積は0.1m3
ある。この容積と粒径10mm以上の大きな骨材の見か
け容積がほぼ等しいということである。樹脂の量は容積
的には少ないためほとんど問題にならない。この時の空
隙率は、粒径10mm以上の大きな骨材の粒度分布にも
よるが、通常10〜30%程度である。
Porosity = (apparent volume−actual volume) / apparent volume “To occupy almost the entire area” means that the area to be filled with the pavement material is 1 m.
If 2 and the thickness is 10 cm, the total volume is 0.1 m 3 . This means that this volume and the apparent volume of a large aggregate having a particle size of 10 mm or more are almost equal. Since the volume of the resin is small in volume, it hardly matters. The porosity at this time depends on the particle size distribution of a large aggregate having a particle size of 10 mm or more, but is usually about 10 to 30%.

【0027】この粒径10mm以上の大きな骨材による
空隙に粒径3.0mm以下の小さな骨材がほぼ充填され
る。即ち、粒径3.0mm以下の小さな骨材の見かけ容
積がその空隙の容積にほぼ等しいということである。こ
の粒径3.0mm以下の小さな骨材による空隙も樹脂に
よって満たされているのではなく、骨材同士は粒径10
mm以上の大きな骨材同様点接着されている。換言する
と、点接着になるように、樹脂と骨材の比率を決めると
いうことである。点接着することにより水の通過する空
隙を確保するのである。
The void formed by the large aggregate having a particle size of 10 mm or more is almost filled with a small aggregate having a particle size of 3.0 mm or less. That is, the apparent volume of a small aggregate having a particle size of 3.0 mm or less is almost equal to the volume of the void. The voids formed by the small aggregate having a particle size of 3.0 mm or less are not filled with the resin.
It is point-bonded as well as large aggregates of mm or more. In other words, the ratio between the resin and the aggregate is determined so as to achieve point bonding. The point bonding secures a gap through which water passes.

【0028】樹脂には、骨材以外に通常混合されるべき
ものを混合してもよいことは言うまでもない。例えば顔
料等である。更に、この樹脂には界面活性剤を混入して
もよい。樹脂に界面活性剤を混合すると通水性が向上す
るためである。
It goes without saying that the resin may be mixed with other materials which are to be usually mixed in addition to the aggregate. For example, it is a pigment or the like. Further, a surfactant may be mixed in the resin. This is because mixing a surfactant with the resin improves water permeability.

【0029】また、骨材の飛散防止効果を高めるため、
樹脂に短繊維を混合して補強してもよい。例えば、長さ
1mm程度のカーボン繊維を樹脂に対して0.1〜1.
0重量%程度混合するのである。勿論、繊維の材質はガ
ラス、ポリエステル、綿糸等補強になるものならばどの
ようなものでもよい。
In order to enhance the effect of preventing the aggregate from scattering,
Short fibers may be mixed with the resin to reinforce the resin. For example, 0.1-1.
About 0% by weight is mixed. Of course, the fiber material may be glass, polyester, cotton thread, or any other reinforcing material.

【0030】本発明の舗装材は道路の表面に施工するも
のであり、その下部の下地の状態は問わない。即ち、路
盤であってもアスファルト舗装等他の舗装面でもよい。
要するに舗装表面の層に透水機能を持たせる目的であれ
ば本発明の舗装材を敷設すればよい。即ち、本発明の舗
装材の使用場所、使用目的は自由であるということであ
る。
The pavement material of the present invention is to be applied to the surface of a road, and the condition of the underlayer under the pavement material does not matter. That is, it may be a roadbed or another pavement surface such as asphalt pavement.
In short, the pavement material of the present invention may be laid for the purpose of imparting a water-permeable function to the pavement surface layer. That is, the place and purpose of use of the pavement material of the present invention are free.

【0031】また、新設道路ばかりでなく、既設の路面
の補修にも使用できる。即ち、路面の骨材が剥脱飛散し
て、わだち掘れになった部分や凹部(ポットホール等)
などに敷設、充填ずるのである。この時路面の損傷程度
により、例えば、浅いものであれば大きな骨材の混合し
ないものを、逆に深いものであれば大きな骨材を混合し
て用いると好適である。
The present invention can be used for repairing not only new roads but also existing road surfaces. In other words, the aggregates on the road surface are exfoliated and scattered, and the rutted parts and recesses (potholes, etc.)
It is laid and filled in. At this time, depending on the degree of damage to the road surface, it is preferable to use, for example, a mixture of a large aggregate without a large aggregate if it is shallow, and a mixture with a large aggregate if it is deep.

【0032】以下図面に示す実施の形態に基づいて本発
明をより詳細に説明する。
Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings.

【0033】図1は、舗装材1を被施工面2の充填すべ
き空間、即ち舗装施工の場合両側端を木製の型枠を設置
するか、既に舗装止の構造物(縁石等)がある場合の図
であるが、それのみではなく、充填する容積 (体積) を
説明するために模式的に表したものであり、この空間内
に、本発明の舗装材1が塗工された状態である。この樹
脂モルタルには、小さな骨材も大きな骨材も含まれてい
るが、図では省略している。
FIG. 1 shows a space in which the pavement material 1 is to be filled in the work surface 2, that is, in the case of pavement, a wooden formwork is installed at both ends, or a paving stop structure (curbstone or the like) is already present. It is a diagram of the case, but it is a schematic representation for explaining not only the volume to be filled (volume), but also in this space, the pavement material 1 of the present invention is coated. is there. This resin mortar includes both small aggregates and large aggregates, but they are omitted in the figure.

【0034】図2は、本発明の舗装材1を既存の舗装面
2の補修に利用したものであり、塗工した部分の断面図
である。斜線の部分は樹脂モルタルであり、小さな骨材
は混合されているが、大きな骨材は混合されていない。
FIG. 2 is a cross-sectional view of a portion where a pavement material 1 of the present invention is used for repairing an existing pavement surface 2 and is coated. The hatched portion is a resin mortar, and small aggregates are mixed, but large aggregates are not mixed.

【0035】図3は、図2の場合より大きく深い凹部を
充填補修する例であり、この例では大きな骨材3が混合
されている。小さな骨材も含まれているが図3には示し
ていない。
FIG. 3 shows an example of filling and repairing a deep recess which is larger than that shown in FIG. 2. In this example, a large aggregate 3 is mixed. Small aggregates are included but are not shown in FIG.

【0036】[0036]

【実施例】次に、本発明の骨材の粒度分布についてその
効果を実験した。
Next, the effect of the aggregate of the present invention on the particle size distribution was examined.

【0037】実施例1、2、比較例1、2 樹脂としては、実施例及び比較例ともにポリサルファイ
ド変性ウレタン樹脂を用い、骨材としては表1に記載し
た粒度分布の天然石を使用し、骨材と樹脂の混合比率8
/1の舗装材によって、縦20cm、横20cm、厚み
10mmのブロックを製造し、そのブロックの透水性を
調べた。
Examples 1 and 2 and Comparative Examples 1 and 2 A polysulfide-modified urethane resin was used as a resin in each of Examples and Comparative Examples, and a natural stone having a particle size distribution shown in Table 1 was used as an aggregate. Mixing ratio of resin and resin 8
A block having a length of 20 cm, a width of 20 cm and a thickness of 10 mm was manufactured from the pavement material of / 1, and the water permeability of the block was examined.

【0038】透水性は見た目で判定した。ブロックを水
平にして、その上から如雨露で水をかけ、表面にほとん
ど溜まらない状態を◎、僅かに溜まる程度が○、徐々に
溜まっていく状態が分かれば△、最初から溢れる状態を
×とした。
The water permeability was visually determined. Level the block and pour water on it with rain and dew.From above, ◎ indicates the state where it hardly accumulates on the surface. .

【0039】次に、目詰まり性は使用したブロックを1
5°傾斜させ、その上から通常の一般道路の砂やゴミの
サイズと言われる0.1〜0.2mmの珪砂の散布と如
雨露による散水を交互に10回繰り返し、その後の透水
性を調べた。判定基準は上記透水性と同様である。結果
を表1に示した。
Next, for the clogging property, one block was used.
It was tilted by 5 °, and it was repeated 10 times alternately from above with 0.1 to 0.2 mm of silica sand, which is said to be the size of sand and garbage on ordinary roads, and watering by rainfall, and the subsequent permeability was examined. . The criterion is the same as that for the water permeability. The results are shown in Table 1.

【0040】[0040]

【表1】 [Table 1]

【0041】表1から分かる通り、実施例1と実施例2
では透水性は最初から確保され、且つ珪砂(砂やゴミ)
による目詰まりが非常に少なかった。これは比較的大き
な骨材と非常に小さな骨材を適度に分布させているため
である。
As can be seen from Table 1, Examples 1 and 2
In the water permeability is secured from the beginning, and quartz sand (sand and garbage)
Clogging was very small. This is because a relatively large aggregate and a very small aggregate are appropriately distributed.

【0042】実施例3、4 実施例1と2の舗装材を用いて、散水した通水性アスフ
ァルト道路の表面に厚み3mmで施工したところ、散水
しなかった場合と変わらない硬化性、接着性があり、か
つ透水性は実施例1と2の結果と同じであった。
Examples 3 and 4 When the pavement materials of Examples 1 and 2 were applied to a surface of a water-permeable asphalt road with a thickness of 3 mm, the curability and adhesiveness were the same as those without water sprinkling. And the water permeability was the same as the results of Examples 1 and 2.

【0043】実施例5、6 実施例1と2の骨材に水を1%含有させたものを用い、
ポリサルファイド変性ウレタン樹脂を混合比率(骨材/
樹脂)8/1で調整した成形物は、白化や硬化不良を起
こすことなく正常に硬化し、かつ透水性は実施例1と2
の結果と同じであった。
Examples 5 and 6 The aggregates of Examples 1 and 2 containing 1% water were used.
Mixing ratio of polysulfide-modified urethane resin (aggregate /
Resin) The molded product adjusted in 8/1 cured normally without causing whitening and curing failure, and the water permeability was as shown in Examples 1 and 2.
The result was the same.

【0044】[0044]

【発明の効果】本発明の舗装材によると、以下のような
利点がある。 (1)本発明の舗装材は、下地を選ばないため、従来の
舗装(通水型でも非通水型でも)の上に塗工すること
も、舗装等に代えて施工することも可能である。 (2)樹脂として水の存在下でも硬化する樹脂を用いて
いるため、混合する骨材の乾燥、非乾燥、及び施工面が
完全に乾いているか否かは考慮する必要がない。更に、
塗工する面も乾燥、非乾燥の状態に関係なく施工でき
る。 (3)従来の樹脂舗装や樹脂塗布と比較して、樹脂に特
殊な粒度分布を有する小さな骨材を混合している点が新
しく、それによって、通水性を確保しつつ、目詰まりを
防止する。 (4)更に、大きな骨材をも混合したものでは、舗装体
の強度を向上させるとともに、これにより全骨材の表面
積の減少と塗布工の省略によって、高価な樹脂量を軽減
している。 (5)塗工は常温混合物で取扱いやすく、その施工面積
の大小により人力施工、機械施工いずれでもよい。 (6)従来のアスファルト舗装と比較して、着色が可能
であるため、美観の優れたものができる。 (7)新設ばかりでなく、補修用としても使用できる。
According to the pavement material of the present invention, there are the following advantages. (1) The pavement material of the present invention can be applied on a conventional pavement (whether water-permeable or non-water-permeable), or can be applied instead of pavement or the like, since the base material is not selected. is there. (2) Since a resin that cures even in the presence of water is used as the resin, there is no need to consider whether the aggregate to be mixed is dry or not, and whether the construction surface is completely dry. Furthermore,
The surface to be coated can be applied regardless of the dry or non-dry state. (3) Compared with the conventional resin pavement and resin coating, a new point is that the resin is mixed with a small aggregate having a special particle size distribution, thereby preventing water clogging while ensuring water permeability. . (4) In the case where a large aggregate is also mixed, the strength of the pavement is improved, and the amount of expensive resin is reduced by reducing the surface area of the entire aggregate and omitting the coating process. (5) The coating is easy to handle with a room temperature mixture, and may be performed manually or mechanically depending on the size of the work area. (6) Coloring is possible as compared with conventional asphalt pavement, so that an aesthetically pleasing one can be obtained. (7) It can be used not only for new construction but also for repair.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の道路の舗装材の一例を塗工したところ
を示す断面図である。
FIG. 1 is a cross-sectional view showing an example of a road pavement material of the present invention applied.

【図2】本発明の道路の舗装材の使用例を示す断面図で
ある。
FIG. 2 is a cross-sectional view showing an example of using a road pavement material of the present invention.

【図3】本発明の道路の舗装材の他の使用例を示す断面
図である。
FIG. 3 is a sectional view showing another example of use of the pavement material for a road according to the present invention.

【符号の説明】[Explanation of symbols]

1:舗装材 2:被施工面 3:大きな骨材 1: Paving material 2: Work surface 3: Large aggregate

───────────────────────────────────────────────────── フロントページの続き (72)発明者 長田 秀晴 大阪府大阪市中央区谷町9丁目2番30号 オサダ技研株式会社内 Fターム(参考) 2D051 AF01 AF07 AG03 AG11 AH03 EA06 EB04 4J002 CD001 CK021 CN021 FD010 GL00  ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideharu Nagata 9-2-30 Tanimachi, Chuo-ku, Osaka-shi, Osaka F-term in Osada Giken Co., Ltd. (Reference) 2D051 AF01 AF07 AG03 AG11 AH03 EA06 EB04 4J002 CD001 CK021 CN021 FD010 GL00

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 樹脂と骨材を混合した舗装材であって、
該骨材の粒度分布が、次の範囲内であり、 (1)粒径が3.0〜0.4mmの骨材が60〜90重
量% (2)粒径が0.4mm未満の骨材が10〜40重量% 且つ、該樹脂は水の存在下でも硬化する樹脂であること
を特徴とする道路の舗装材。
1. A pavement material obtained by mixing a resin and an aggregate,
The particle size distribution of the aggregate is within the following range: (1) Aggregate having a particle size of 3.0 to 0.4 mm is 60 to 90% by weight (2) Aggregate having a particle size of less than 0.4 mm A road paving material, wherein the resin is a resin that cures even in the presence of water.
【請求項2】 樹脂がポリサルファイド変性した樹脂で
あることを特徴とする請求項1に記載の道路の舗装材。
2. The road paving material according to claim 1, wherein the resin is a polysulfide-modified resin.
【請求項3】 粒径10mm以上の骨材を含むことを特
徴とする請求項1に記載の道路の舗装材。
3. The pavement material for roads according to claim 1, comprising an aggregate having a particle size of 10 mm or more.
【請求項4】 粒径10mm以上の骨材の見かけ容積が
ほぼ全体を占め、粒径3.0mm以下の骨材は粒径10
mm以上の骨材の間隙をほぼ埋める見かけ容積であるこ
とを特徴とする請求項3に記載の道路の舗装材。
4. The apparent volume of the aggregate having a particle size of 10 mm or more occupies almost the entire volume, and the aggregate having a particle size of 3.0 mm or less has a particle size of 10 mm or less.
The pavement material for roads according to claim 3, wherein the pavement material has an apparent volume substantially filling a gap between aggregates of not less than mm.
【請求項5】 粒径3.0mm以下の骨材の粒度分布
が、次の範囲内であることを特徴とする請求項1〜4の
いずれかに記載の道路の舗装材。 (1)粒径が3.0〜0.8mmの骨材が30〜50重
量% (2)粒径が0.8mm未満〜0.4mmの骨材が30
〜50重量% (3)粒径が0.4mm未満〜0.2mmの骨材が5〜
15重量% (4)粒径が0.2mm未満の骨材が2〜15重量%
5. The pavement material for roads according to claim 1, wherein the particle size distribution of the aggregate having a particle size of 3.0 mm or less is within the following range. (1) 30 to 50% by weight of aggregate having a particle size of 3.0 to 0.8 mm (2) 30 of aggregate having a particle size of less than 0.8 to 0.4 mm
(3) Aggregate having a particle size of less than 0.4 mm to 0.2 mm is 5 to 5% by weight.
15% by weight (4) 2 to 15% by weight of aggregate having a particle size of less than 0.2 mm
【請求項6】 粒径3.0mm以下の骨材の粒度分布
が、次の範囲内であることを特徴とする請求項1〜5の
いずれかに記載の道路の舗装材。 (1)粒径が1.2〜0.8mmの骨材が35〜45重
量%、 (2)粒径が0.8mm未満〜0.4mmの骨材が35
〜45重量% (3)粒径が0.4mm未満〜0.2mmの骨材が7〜
15重量% (4)粒径が0.2mm未満の骨材が2〜10重量%
6. The pavement material for roads according to claim 1, wherein the particle size distribution of the aggregate having a particle size of 3.0 mm or less is within the following range. (1) 35 to 45% by weight of aggregate having a particle size of 1.2 to 0.8 mm; (2) 35 of aggregate having a particle size of less than 0.8 to 0.4 mm
(3) Aggregate having a particle size of less than 0.4 mm to 0.2 mm is 7 to
15% by weight (4) 2 to 10% by weight of aggregate having a particle size of less than 0.2 mm
JP11181458A 1999-06-28 1999-06-28 Road pavement material Pending JP2001011812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11181458A JP2001011812A (en) 1999-06-28 1999-06-28 Road pavement material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11181458A JP2001011812A (en) 1999-06-28 1999-06-28 Road pavement material

Publications (1)

Publication Number Publication Date
JP2001011812A true JP2001011812A (en) 2001-01-16

Family

ID=16101118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11181458A Pending JP2001011812A (en) 1999-06-28 1999-06-28 Road pavement material

Country Status (1)

Country Link
JP (1) JP2001011812A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008002066A (en) * 2006-06-20 2008-01-10 Yokohama Rubber Co Ltd:The Freezing inhibit paving material
JP2009203697A (en) * 2008-02-27 2009-09-10 Ike Kk Elastic paving material, its molding method, and elastic pavement and its construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008002066A (en) * 2006-06-20 2008-01-10 Yokohama Rubber Co Ltd:The Freezing inhibit paving material
JP2009203697A (en) * 2008-02-27 2009-09-10 Ike Kk Elastic paving material, its molding method, and elastic pavement and its construction method

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