JPS6149446B2 - - Google Patents
Info
- Publication number
- JPS6149446B2 JPS6149446B2 JP54113499A JP11349979A JPS6149446B2 JP S6149446 B2 JPS6149446 B2 JP S6149446B2 JP 54113499 A JP54113499 A JP 54113499A JP 11349979 A JP11349979 A JP 11349979A JP S6149446 B2 JPS6149446 B2 JP S6149446B2
- Authority
- JP
- Japan
- Prior art keywords
- roadbed
- cement
- weight
- mixing
- slurry 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.)
- Expired
Links
- 239000004568 cement Substances 0.000 claims description 59
- 239000000839 emulsion Substances 0.000 claims description 43
- 239000000203 mixture Substances 0.000 claims description 42
- 239000002002 slurry Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 239000003381 stabilizer Substances 0.000 claims description 25
- 238000005507 spraying Methods 0.000 claims description 13
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 12
- 239000004571 lime Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 18
- 239000010426 asphalt Substances 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 10
- 239000004575 stone Substances 0.000 description 10
- 239000002689 soil Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 7
- 239000011384 asphalt concrete Substances 0.000 description 5
- -1 gravel Substances 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012615 aggregate Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011396 hydraulic cement Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は、道路、運動場、校庭、広場などの舗
装や鉄道の軌道道床などの路盤の安定処理方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for stabilizing roadbeds such as pavements of roads, playgrounds, schoolyards, plazas, etc. and railway track beds.
道路などの舗装路盤を強化するために、路盤に
対し路上混合方式でセメントを添加混合したり、
歴青質乳剤を添加混合し、これを締固めて路盤を
安定処理する方法は公知である。セメントの混合
は、路盤の強度上昇にすぐれているが、撓み性、
防水性におとり、硬化収縮や荷重によるひび割れ
などが入りやすく、この上に表層を施工したとき
表層にひび割れを導入しやすい欠点がある。また
歴青質乳剤の混合は、撓み性、防水性はすぐれる
が、セメントのような強度上昇は余り期待でき
ず、歴青質乳剤がかたよつて多く混合されたとこ
ろでは、表層を施工したとき表層の表面に歴青剤
のフラツシユや、にじみ出しを起す恐れや、表層
を流動させる恐れがあつた。これらのセメントと
歴青質乳剤の両者の特長を生かし、欠点を補う方
法として、最近ではセメントと歴青質乳剤の両者
を混合する方法も実施されている。 In order to strengthen the pavement base of roads, etc., cement is added to the base by adding it to the base using an on-road mixing method.
A method for stabilizing the roadbed by adding and mixing a bituminous emulsion and compacting it is known. Mixing cement is excellent at increasing the strength of the roadbed, but it also reduces flexibility and
Although it is not waterproof, it is prone to cracking due to curing shrinkage and loading, and when a surface layer is applied on top of it, it has the disadvantage of easily introducing cracks into the surface layer. In addition, although the mixture of bituminous emulsion has excellent flexibility and waterproofness, it cannot be expected to increase the strength as much as cement. There was a risk that the bituminous agent would flash or ooze out on the surface of the surface layer, or that the surface layer would flow. In order to take advantage of the characteristics of both cement and bituminous emulsion and compensate for their drawbacks, a method of mixing both cement and bituminous emulsion has recently been implemented.
従来実施されているこれらの公知の方法は、路
盤、路床を一旦ロードスタビライザなどを用いて
所定の深さまで掘り起して破砕（これを切削、破
砕工程という）し、次いでその切削、破砕物を平
坦にならした後、その表面にセメントを一様に敷
きひろげ、再び自走式ロードスタビライザで切
削、破砕物にセメントを混合し、さらに歴青質乳
剤を散布しながらロードスタビライザでセメント
を混合した切削、破砕物に歴青質乳剤を混合する
方法がとられている。あるいは在来の路面に切込
砕石、粒度適整砕石などを敷きならし、これらの
所定の厚さの層を造り、その表面にセメントを一
様に敷きひろげ次いで自走式ロードスタビライザ
で砕石層の表面から砕石層の全て、あるいはさら
に在来路面の所望深さまで切削、破砕とセメント
の混合を行い、次いで歴青質乳剤を散布しながら
再度ロードスタビライザでこれらの混合を行う方
法がとられている。 In these known methods that have been implemented in the past, the roadbed or roadbed is first excavated to a predetermined depth using a road stabilizer or the like and crushed (this is called a cutting or crushing process), and then the cut or crushed material is After flattening the surface, cement is spread evenly over the surface, cut again using a self-propelled road stabilizer, and cement is mixed with the crushed material, and then the cement is mixed using a road stabilizer while dispersing bituminous emulsion. A method is used in which a bituminous emulsion is mixed with the cut and crushed material. Alternatively, cut crushed stone, crushed stone with appropriate particle size, etc. are laid on the conventional road surface to create a layer of a predetermined thickness, and then cement is spread evenly on the surface, and then a self-propelled road stabilizer is used to spread the crushed stone layer. The method is to cut, crush and mix cement from the surface of the road to the entire crushed stone layer or further to the desired depth of the conventional road surface, and then mix these again with a road stabilizer while distributing bituminous emulsion. There is.
このように在来の方法は、路盤、路床の切削、
破砕工程、セメントを混合し敷きならす工程、歴
青質乳剤を混合し敷きならす工程に分かれている
ため、施行能率が悪い欠点がある。また、セメン
トを混合するときには、セメントを予じめ一様に
敷きひろげる必要があるため風などに起因するセ
メントの飛散により、沿道や周辺の人家、家畜、
農作物などに害を与えたり、また作業員に害を与
えたりする謂ゆる粉塵公害を発生する欠点があつ
た。さらに、従来の方法では、路上において切
削、破砕物などに対し、セメントと歴青質乳剤を
別々に混合するため、セメントと歴青質乳剤の何
れもが片よつて混合されることがある。また、セ
メントと歴青質乳剤が一定の割合で均一に混合で
きないという欠点があつた。 In this way, conventional methods involve cutting the roadbed, roadbed,
Since it is divided into a crushing process, a process of mixing and spreading cement, and a process of mixing and spreading bituminous emulsion, it has the disadvantage of poor execution efficiency. In addition, when mixing cement, it is necessary to spread the cement uniformly in advance, so the scattering of cement caused by wind etc. can cause damage to roadsides and nearby houses and livestock.
The drawback was that it generated so-called dust pollution that harmed agricultural crops and workers. Furthermore, in the conventional method, cement and bituminous emulsion are mixed separately for cuttings, crushed materials, etc. on the road, so that both the cement and bituminous emulsion may be mixed together. Another drawback was that the cement and bituminous emulsion could not be uniformly mixed at a constant ratio.
本発明は、叙上の欠点を補ない改善されたすぐ
れた路盤の路上混合方式による安定処理方法を提
供することを目的とするものであつて、路盤上に
所定量の歴青質乳剤とセメントまたは石灰、ある
いは両者の併用物（以下これらを総称してセメン
トなどという）を混合してなるスラリー状組成物
を散布しながら、ロードスタビライザなどを用い
て路盤の表面から路盤または路床の所定深さまで
の切削、破砕と、スラリー状組成物の混合とを同
時に行うと共に、生成した混合物を平坦に敷きな
らし、ローラなどを用いて締固めることを特徴と
する路盤の安定処理方法を要旨とするものであ
る。 The object of the present invention is to provide an improved and improved method for stably treating a roadbed using an on-road mixing method that does not compensate for the above-mentioned drawbacks. or lime, or a combination of both (hereinafter collectively referred to as cement, etc.), while spraying a slurry composition, from the surface of the roadbed to a predetermined depth of the roadbed or subgrade using a road stabilizer etc. The gist of the present invention is a method for stabilizing a roadbed, which is characterized by simultaneously performing cutting and crushing and mixing a slurry composition, and also by spreading the resulting mixture flat and compacting it using rollers or the like. It is something.
本発明で対象とする路盤は、謂ゆる歴青舗装に
おける上層路盤または下層路盤に相当するものを
いう。これらは、在来の砂利道の砂利層（砂利、
砕石、土砂などよりなる）や砕石、砂利、スラ
グ、土砂などよりなる新規の路盤層を含むもので
ある。また、路盤の厚さが均一でない場合、ある
いは路盤層のうすい場合は路床の一部を含むこと
もある。 The roadbed targeted by the present invention corresponds to the upper or lower roadbed in so-called bituminous pavement. These are the gravel layers (gravel,
This includes a new roadbed layer consisting of crushed stone, gravel, slag, soil, etc.) and crushed stone, gravel, slag, soil, etc. In addition, if the thickness of the roadbed is not uniform or if the roadbed layer is thin, it may include part of the roadbed.
本発明において用いる歴青質乳剤としては、石
油アスフアルト、天然アスフアルト、タール類、
ピツチ類などの歴青物から選択された一種または
二種以上の歴青物を主成分とする乳剤で、そのタ
イプはアニオン型、ノニオン型、カチオン型の何
れでもよいが、セメントまたは石灰との混合性が
よく、これらの水硬性または気硬性による強度発
現を著しく妨げない性質のものを用いる。また、
歴青質乳剤は、その濃度（蒸発残留物）60重量
％、温度25℃における蒸発残留物の針入度40〜
300のものを標準とするが、濃度については混合
する対象物の含水量などを勘案して、これより濃
度の濃いものを用いても、薄いものを用いても蒸
発残留物の量で換算して60重量％での所定量に相
当する量を用いればよい。なお、歴青質乳剤につ
いては、これにゴムまたは合成樹脂などの一種ま
たは二種以上組合せたものを歴青物に対し0.5〜
10重量％添加し、その性質を改善したものも含ま
れる。この種の歴青質乳剤を用いれば本発明の効
果をより一層高めることが出来る。 The bituminous emulsion used in the present invention includes petroleum asphalt, natural asphalt, tars,
An emulsion whose main component is one or more bituminous substances selected from bituminous substances such as pithus.The type may be anionic, nonionic, or cationic, but it is not miscible with cement or lime. Use a material that has properties that do not significantly impede the development of strength due to hydraulic or air hardness. Also,
The bituminous emulsion has a concentration (evaporation residue) of 60% by weight and a penetration of the evaporation residue of 40~40 at a temperature of 25°C.
300 is the standard, but the concentration should be calculated based on the amount of evaporation residue, regardless of whether you use a thicker or thinner one, taking into consideration the water content of the materials to be mixed. An amount corresponding to a predetermined amount of 60% by weight may be used. Regarding bituminous emulsions, one or a combination of two or more materials such as rubber or synthetic resin may be added to the bituminous emulsions at a rate of 0.5 to 0.5
It also includes those whose properties have been improved by adding 10% by weight. By using this kind of bituminous emulsion, the effects of the present invention can be further enhanced.
セメントとしては、ポルトランドセメント、高
炉セメント、シリカセメント、フライアツシユセ
メント、高炉コロイドセメント、コロイドセメン
ト、ジエツトセメント（凝結調節剤と併用）、ア
ルミナセメント、耐硫酸塩セメント、膨脹セメン
ト（水と反応してエトリンガイドを形成するも
の）などの水硬性セメント類から選択された一種
または二種以上の併用物が用いられる。 Cements include Portland cement, blast furnace cement, silica cement, fly ash cement, blast furnace colloidal cement, colloidal cement, jet cement (used in combination with setting regulators), alumina cement, sulfate-resistant cement, and expanding cement (which does not react with water). One or a combination of two or more selected from hydraulic cements, such as those used to form an ettrin guide, is used.
また、石灰としては、粉末または粒状の消石
灰、生石灰を用いる。そして、石灰に石膏を併用
して用いることもある。 Further, as the lime, powdered or granular slaked lime or quicklime is used. In some cases, gypsum is used in combination with lime.
本発明においては、叙上の如き歴青質乳剤とセ
メントなどを均一に混合して流動しやすいスラリ
ー状組成物とし、これを自走式ロードスタビライ
ザに供給して用いるが、これらの歴青質乳剤とセ
メントなどの路盤中に占める割合は仕上つた路盤
の密度を2.1で計算して、歴青質乳剤（濃度60重
量％に換算して）は２〜10重量％、好ましくは４
〜８重量％、セメントなどは２〜10重量％、好ま
しくは2.5〜８重量％であり、かつ両者の合計量
で４〜18重量％、好ましくは６〜14重量％の範囲
である。したがつてスラリー状組成物の組成とそ
の添加量は最終的にこの範囲に入るようにする。 In the present invention, the above-mentioned bituminous emulsion and cement are mixed uniformly to form a slurry composition that is easy to flow, and this is supplied to a self-propelled road stabilizer. The proportion of emulsion and cement in the roadbed is calculated by calculating the density of the finished roadbed by 2.1, and the bituminous emulsion (converted to a concentration of 60% by weight) is 2 to 10% by weight, preferably 4% by weight.
-8% by weight, cement etc. is in the range of 2-10% by weight, preferably 2.5-8% by weight, and the total amount of both is in the range of 4-18% by weight, preferably 6-14% by weight. Therefore, the composition of the slurry composition and the amount added thereof should ultimately fall within this range.
歴青質乳剤については、その量が２重量％未満
では路盤に防水性、撓み性を付与する効果を出す
ことが出来ない。また、10重量％を超えると防水
性、撓み性はよくなるが、歴青質分が過剰とな
り、かえつて路盤の支持力や、耐流動性などの強
度を低下させる原因を誘発するのみならず、経済
的にも割高となるので好ましくない。 As for the bituminous emulsion, if its amount is less than 2% by weight, it cannot produce the effect of imparting waterproofness and flexibility to the roadbed. In addition, if it exceeds 10% by weight, waterproofness and flexibility will be improved, but the bituminous content will be excessive, which will not only cause a decrease in the strength of the roadbed, such as bearing capacity and flow resistance. This is not desirable because it is economically expensive.
セメントなどについては、その量が２重量％未
満では路盤の圧縮強度発現に効果がなく、10重量
％（セメントの場合には８％）を超えると圧縮強
度は大きくなるが、これにともない収縮亀裂の発
生をまぬがれることが出来なくなる欠点を誘発す
るので好ましくない。セメントなどのうちセメン
トと石灰との使いわけであるが、一般には路盤中
の細粒分に砂質土が多く含まれている場合にはセ
メントがよく、シルト質土、ローム質土が多く含
まれている場合には、セメントと石灰の併用また
は石灰を用いるとよい。また、路床土が常に高含
水比のものである場合には、生石灰またはエトリ
ンガイドを形成する水硬性セメントなどを一般の
セメントあるいは石灰と併用するとよい。 Regarding cement, etc., if the amount is less than 2% by weight, it will not be effective in developing the compressive strength of the roadbed, and if it exceeds 10% by weight (8% in the case of cement), the compressive strength will increase, but this will cause shrinkage cracks. This is undesirable because it induces the drawback that it becomes impossible to avoid the occurrence of. Among cement, etc., cement and lime are used, but in general, cement is better when the fine particles in the roadbed contain a lot of sandy soil, and when the subgrade contains a lot of silty or loamy soil. If this is the case, use a combination of cement and lime, or use lime. Furthermore, if the subgrade soil always has a high water content, quicklime or hydraulic cement that forms an Etlin guide may be used in combination with general cement or lime.
さらに、歴青質乳剤とセメントなどの量的な組
合せについては、これらを添加する対象路盤と期
待する安定処理路盤の性質および経済性などを考
慮し、その都度試験して適当な組合せ割合を決定
するが、その合計量が４重量％未満では本発明で
期待する安定処理路盤の効果、すなわち防水性、
撓み性の向上、支持力の増大は得られない。ま
た、18重量％を超えると、経済的に不利になるば
かりではなく、両者の組合せ如何によつては、す
なわち歴青質乳剤の量が多過ぎると支持力の低下
や流動現象を起す原因となり、またセメントなど
の量が多くなり過ぎると収縮亀裂の発生を招く原
因となるので好ましくない。 Furthermore, when it comes to quantitative combinations of bituminous emulsion and cement, we consider the properties and economics of the target roadbed to which they will be added and the expected stabilized roadbed, and conduct tests on a case-by-case basis to determine the appropriate combination ratio. However, if the total amount is less than 4% by weight, the effects of the stabilized roadbed expected in the present invention, namely waterproofness,
Improvement in flexibility and increase in supporting force cannot be obtained. Moreover, if it exceeds 18% by weight, it is not only economically disadvantageous, but depending on the combination of the two, in other words, if the amount of bituminous emulsion is too large, it may cause a decrease in supporting capacity or a flow phenomenon. Also, if the amount of cement or the like is too large, this is not preferable because it may cause shrinkage cracks.
一般的に好ましい組合せの範囲は、歴青質乳剤
（蒸発残留物60重量％）１重量部に対し、セメン
トなどの量が１重量部もしくはそれ以下の割合に
なるように組合せると、収縮亀裂の発生を防止す
る点、および撓み性など応力緩和特性を向上させ
る点で特に有効である。しかし、混合の対象とな
る骨材などの性質によつては、必ずしもこの組合
せ比率に拘泥されなくてもよい。 In general, the preferred range of combinations is that if the amount of cement, etc. is combined at a ratio of 1 part by weight or less to 1 part by weight of bituminous emulsion (60% by weight of evaporation residue), shrinkage cracks will occur. It is particularly effective in preventing the occurrence of stress and improving stress relaxation properties such as flexibility. However, depending on the properties of the aggregates to be mixed, the combination ratio may not necessarily be restricted.
また上記歴青質乳剤とセメントなどとを混合し
てなるスラリー状組成物には、粘度を下げ散布
性、混合性などを改善するために、必要に応じて
水分の多い歴青質乳剤を使用するか、あるいは別
に水を添加してもよい。また、セメントなどとし
て石灰を使用するときは、粘度が高くなるので、
適量の水を添加して粘度を下げて使用してもよ
い。 In addition, for slurry compositions made by mixing the above-mentioned bituminous emulsion with cement, etc., a bituminous emulsion with a high water content is used as necessary to lower the viscosity and improve dispersibility and mixability. Alternatively, water may be added separately. Also, when lime is used as cement, etc., the viscosity increases, so
An appropriate amount of water may be added to lower the viscosity before use.
次に、本発明に用いるロードスタビライザであ
るが、一般に自走式のものであり、路盤の表面か
ら路盤の部分さらに必要に応じて路床土の部分ま
での厚さ約40cm程度を一回の操作で切削、破砕と
混合とが出来る３つの機能と、混合したものを自
走しながら平坦に敷きならす機能を兼ね備えたも
のであり、特に混合については、切削破砕物とそ
れらに添加される歴青質乳剤とセメントなどより
なるスラリー状組成物と混合が均一に出来ること
が必要であり、同様の機能を持つているものであ
れば、他の装置であつてもよい。 Next, the road stabilizer used in the present invention is generally a self-propelled type, and it can be used to cover a thickness of approximately 40 cm from the surface of the roadbed to the roadbed section and, if necessary, to the subgrade soil. It has three functions: cutting, crushing, and mixing by operation, and a function that spreads the mixed material evenly while traveling on its own.Especially when it comes to mixing, it is possible to cut, crush, and mix. It is necessary to be able to uniformly mix the blue emulsion with the slurry composition made of cement, etc., and other equipment may be used as long as it has the same function.
本発明の方法は、路盤の処理厚さ、あるいは路
盤とその下部の路床の一部までの処理厚さに、ス
ラリー状組成物を所定の混合割合で混合するのに
必要な量をロードスタビライザの散布装置のノズ
ルを通してロードスタビライザの走行速度に合せ
て、路盤面に対し一様に散布すると供に、ロード
スタビライザで路盤面から路盤または路床の所定
の深さまでを一回の操作で切削、破砕とその切
削、破砕物に対するスラリ状組成物の混合とを同
時に行い、これらの混合物を均一に造りながら自
走して平坦に敷きならし、次いでタイヤローラで
転圧し、グレーダで施工面の出来形を整形し、さ
らにタイヤローラ、鉄輪ローラなどを併用して十
分に締固め路盤を形成することによつて完成され
る。 In the method of the present invention, a load stabilizer is used to mix a slurry composition in a predetermined mixing ratio to the treated thickness of the roadbed, or to the treated thickness of the roadbed and a part of the roadbed below it. Through the nozzle of the spraying device, it is uniformly sprayed onto the roadbed surface according to the traveling speed of the road stabilizer, and the road stabilizer cuts from the roadbed surface to a predetermined depth of the roadbed or roadbed in one operation. The crushing, cutting, and mixing of the slurry composition to the crushed material are performed simultaneously, and the mixture is made uniform and self-propelled to spread it flat, then it is compacted with tire rollers, and the finished surface is checked with a grader. It is completed by shaping the road and forming a sufficiently compacted roadbed using tire rollers, steel wheel rollers, etc.
本発明の方法によつて完成された路盤は、必要
に応じてその上に養生用アスフアルト乳剤
（JISK2208 PK−３）などを散布し、セメントな
どの強度発現に必要な養生時間をとり、強固な路
盤を形成し、しかる後、その表面に常法により、
種々の歴青質結合材と骨材、フイラーなどよりな
る表層、基層などが設けられる。 The roadbed completed by the method of the present invention is hardened by spraying curing asphalt emulsion (JISK2208 PK-3) on it as needed, taking the curing time necessary to develop the strength of cement, etc. After forming the roadbed, the surface is coated with the usual method.
Surface layers and base layers made of various bituminous binders, aggregates, fillers, etc. are provided.
上記において、スラリー状組成物は、通常ロー
ドスタビライザと別の車輌上に設備されたスラリ
ー状組成物製造装置で歴青質乳剤とセメントなど
を混合して造られる。 In the above, the slurry composition is usually produced by mixing bituminous emulsion, cement, etc. in a slurry composition production device installed on a vehicle separate from the road stabilizer.
そして、スラリー状組成物の定量的な供給方法
については、ロードスタビライザ上に設けたタン
クにこれを供給し、このタンクから同じくロード
スタビライザ上に設けた定量ポンプなどを用い混
合機構の近くに設けた散布装置のノズルを通じて
自走しながら連続的に供給しても、別の車に積載
したタンクにスラリー状組成物を入れ、ゴムホー
スなどを用いて上記の定量ポンプあるいは散布装
置の一部（別の車に定量ポンプが取付けられてい
る場合）に接続し、前記同様にノズルを通じて自
走させながら連続的に供給してもよい。 As for the method of quantitatively supplying the slurry composition, it was supplied to a tank installed on the load stabilizer, and from this tank a metering pump, etc., also installed on the load stabilizer, was installed near the mixing mechanism. Even if the slurry composition is supplied continuously through the nozzle of the spraying device while self-propelled, the slurry composition may be placed in a tank loaded in another vehicle, and a rubber hose may be used to supply the above-mentioned metering pump or part of the spraying device (another vehicle). If the metering pump is installed in the vehicle), the metering pump may be connected to the metering pump, and the metering pump may be continuously supplied while being self-propelled through the nozzle in the same manner as described above.
本発明において、ロードスタビライザによる切
削、破砕および混合する路盤の厚さについては、
路盤の表面から最小５cm以上約40cm程度までの厚
さが好ましい。厚さが40cm以上になると、爾後の
転圧操作において十分に締め固めを行い高い密度
を持つた強固な路盤を造ることが困難となる。 In the present invention, the thickness of the roadbed to be cut, crushed and mixed by the road stabilizer is as follows:
It is preferable that the thickness be at least 5 cm or more and up to about 40 cm from the surface of the roadbed. When the thickness exceeds 40 cm, it becomes difficult to sufficiently compact the roadbed in subsequent rolling operations to create a strong, high-density roadbed.
なお、本発明の実施に当つては、在来の路盤が
軟弱であり補強を必要とする場合、あるいは都市
ごみの焼却灰などの謂ゆる産業廃棄物（粉状、粒
状、小塊状のもの）を路盤材として利用する場合
など、補強用の新規な骨材（粗骨材、細骨材）の
適量を補足して敷きならして併用しても、また産
業廃棄物の適量を骨材同様に併用してもよい。 In carrying out the present invention, the conventional roadbed is weak and requires reinforcement, or so-called industrial waste (powder, granule, small lumps) such as incinerated ash of municipal waste is used. When used as a roadbed material, an appropriate amount of new reinforcing aggregate (coarse aggregate, fine aggregate) can be supplemented and spread, or an appropriate amount of industrial waste can be used in the same way as aggregate. May be used in combination with
また、路盤、路床などが乾燥し過ぎている場合
には、これらの切削、破砕物と他の添加物との混
合性をよくするため、およびそれら、混合物の締
め固めを良好にするためにスラリー状組成物と併
せてロードスタビライザなどに附属させた散水装
置から適量の水を散布しながら作業を行うとよ
い。 In addition, if the roadbed, roadbed, etc. is too dry, to improve the mixability of these cuttings and crushed materials with other additives, and to improve the compaction of the mixture. It is preferable to perform the work while spraying an appropriate amount of water along with the slurry composition from a water spraying device attached to a road stabilizer or the like.
本発明の効果を要約すると次の通りである。 The effects of the present invention are summarized as follows.
(1) 従来の方法と比較して、作業工程の工程数が
半減されるので、施工能率が極めて向上し、経
済的効果が顕著になる。(1) Compared to conventional methods, the number of work steps is halved, resulting in extremely improved construction efficiency and significant economic effects.
(2) 歴青質乳剤とセメントなどが均一に混合され
たスラリー状組成物として予じめ混合されるた
めに、路盤骨材中にセメントは歴青質乳剤と共
に均一に混合され、路盤は複合体的な新しい混
合物に変化し、これによつて路盤を形成するこ
とができるので、従来の方法における歴青分が
過多となる場合に誘発される弊害、すなわち交
通荷重に対する支持力の低下、酷暑時における
耐流動性の低下やわだち堀れの現象などを発生
することがない。(2) Because the bituminous emulsion and cement are mixed in advance as a homogeneous slurry composition, the cement is uniformly mixed with the bituminous emulsion in the subbase aggregate, and the subbase is a composite material. The material is transformed into a new mixture that can be used to form the roadbed, thereby eliminating the negative effects caused by excessive bituminous content in conventional methods, such as reduced support capacity for traffic loads and extreme heat. No deterioration in flow resistance or rut-like phenomena occur.
(3) 路盤中に占める歴青質乳剤とセメントなどの
使用量および両者の合計使用量を限定すること
により、一般のセメントや石灰などにより安定
処理した路盤の如く、収縮亀裂を多発すること
がなく、かつこれらセメントなどの材料のみに
て安定処理した路盤より防水性にすぐれ、適度
の撓み性を持つた支持力および応力緩和特性が
共に大きい良好な路盤を得ることができ、延い
ては路盤上に新らたに設ける表層などの寿命を
延伸させるのに大きな効果を発揮する。(3) By limiting the amount of bituminous emulsion and cement used in the roadbed, as well as the total amount of both, shrinkage cracks will not occur as frequently as in roadbeds stabilized with ordinary cement or lime. Moreover, it is possible to obtain a roadbed that is more waterproof than a roadbed stabilized only with materials such as cement, has a suitable degree of flexibility, has a large supporting capacity, and has a large stress relaxation property, and as a result, the roadbed It is highly effective in extending the lifespan of newly installed surface layers.
(4) セメントや石灰は歴青質乳剤中に混入され均
質で流動し易いスラリー状組成物として供給添
加されるので、従来行われてきたセメントの供
給添加の場合の如く風によつて吹飛ばされて、
沿道の農作物や人畜に害を与えたり、また作業
員に害を与えたりすることがない。(4) Since the cement and lime are mixed into the bituminous emulsion and added as a homogeneous and easily flowable slurry composition, they cannot be blown away by the wind as in the case of conventional cement addition. Being done,
It does not cause any harm to crops, people or livestock along the road, or to workers.
本発明の方法により完成された路盤は、叙上の
如き効果を有するので、その上に種々の舗装（表
層、基層）を施工することができ、そして良好な
舗装体が得られる。たとえば、加熱または常温施
工方式による表面処理（一層式、二層式、三層式
など）、スラリーシール、薄層舗装（厚さ2.5cm以
下）、一般舗装（粗粒度、密粒度、細粒度、開粒
度型アスフアルトコンクリートあるいは密粒度、
細粒度ギヤツプ型アスフアルトコンクリートな
ど）、滑り止め舗装、耐摩耗性舗装、耐流動性舗
装、明色舗装、着色舗装、グースアスフアルト舗
装、ロールドアスフアルト舗装、半剛性舗装、耐
油性舗装、透水性舗装などを舗設することができ
る。なお、特殊なものとして、上記の歴青物に熱
硬化性の合成樹脂、たとえばエポキシ樹脂などを
加えて変性した改質歴青物よりなる結合剤（硬化
剤と併用する）と骨材、フイラーとからなる混合
物も、本発明の路盤上に舗設することができる。 Since the roadbed completed by the method of the present invention has the effects described above, various pavements (surface layer, base layer) can be constructed thereon, and a good pavement body can be obtained. For example, surface treatment using heating or room-temperature construction methods (single-layer, double-layer, three-layer, etc.), slurry seal, thin-layer pavement (thickness 2.5 cm or less), general pavement (coarse-grained, dense-grained, fine-grained, Open-grained asphalt concrete or dense-grained concrete,
fine-grained gap-type asphalt concrete, etc.), anti-slip pavement, wear-resistant pavement, flow-resistant pavement, light-colored pavement, colored pavement, goose asphalt pavement, rolled asphalt pavement, semi-rigid pavement, oil-resistant pavement, water-permeable pavement etc. can be established. In addition, as a special type, it is made of a binder (used in combination with a hardening agent) made of a modified bituminous material obtained by adding a thermosetting synthetic resin, such as an epoxy resin, to the above bituminous material, aggregate, and filler. A mixture of:
また、コンクリート舗装を舗設することもでき
る。 It is also possible to lay concrete pavement.
さらに、本発明の方法は、鉄道における軌道の
道床の強化（たとえばバラスト下の道床の支持力
の増大と噴泥防止）に非常に有効である。 Further, the method of the present invention is very effective for strengthening track beds in railways (for example, increasing the supporting capacity of the track bed under the ballast and preventing mud blowing).
次に本発明の方法の実施例について説明する。 Next, examples of the method of the present invention will be described.
実施例 １
路床（礫まじりのローム質土）上に、砂質土層
の厚さ約５cm、砂利層の厚さ約15cmを有する砂利
道を設け、さらに粒度調整砕石層を厚さ約10cmに
敷きならし、軽く締固めた表面に、自走式ロード
スタビライザ（酒井重工業株式会社製、デイープ
スタビライザ）を用いて、そのロードスタビライ
ザの切削、破砕、混合部分を覆つているフード
（これが、混合物を平坦に敷きならす装置にもな
る。）の進行方向に対する前方位置に取付けた散
布用装置と、先方に配置した別の車輌上に設備し
たスラリー状組成物の製造装置とをゴムホースを
用いて連結し、セメント混合用アスフアルト乳剤
（蒸発残留物60重量％、蒸発残留物の針入度90／
25℃）60重量部と普通ポルトランドセメント40重
量部とを均一に混合してなるスラリー状組成物
（比重1.22、粘度は土木学会規定のプレパクトコ
ンクリート指針案によるＪロートを用いたフロー
タイムで18秒）をスラリー状組成物製造装置に設
備した定量ポンプを用いて送り、ロードスタビラ
イザの散布装置のノズルから、１m2当り42Kgの割
合で平均に散布しながら二台の車輌を進行方向に
並列させて移行させ、ロードスタビライザで路盤
面から約23cmの深さまでの切削、破砕とそれら切
削、破砕物と散布されたスラリー状組成物の混合
を一回の操作で同時に行いながら、この混合物を
ロードスタビライザのフードに備付けてある敷き
ならし装置で連続的に均一に敷きならす。次い
で、これをタイヤローラで転圧し、グレーダで路
面の出来型を調整した後、さらにタイヤローラお
よび鉄輪ローラを用いて十分に締固めてアスフア
ルト乳剤約６重量％、セメント約４重量％を含有
する強固な路盤（厚さ約20cm）を形成し、本発明
の方法による路盤を得た。Example 1 A gravel road with a sandy soil layer of approximately 5 cm thickness and a gravel layer of approximately 15 cm thickness was installed on the roadbed (loamy soil mixed with gravel), and a particle size-adjusted crushed stone layer was further added to a thickness of approximately 10 cm. A self-propelled load stabilizer (manufactured by Sakai Heavy Industries, Ltd., Deep Stabilizer) is used on the surface that has been leveled and lightly compacted. The spraying device installed at the front in the direction of travel (also used as a device for leveling the surface) and the slurry composition manufacturing device installed on another vehicle located ahead are connected using a rubber hose. Asphalt emulsion for cement mixing (evaporation residue 60% by weight, evaporation residue penetration 90/
Slurry composition made by uniformly mixing 60 parts by weight of 25°C) and 40 parts by weight of ordinary Portland cement (specific gravity 1.22, viscosity 18% by flow time using a J-funnel according to the draft prepact concrete guidelines prescribed by the Japan Society of Civil Engineers). 2 seconds) is sent using a metering pump installed in the slurry composition manufacturing equipment, and two vehicles are placed in parallel in the direction of travel while spraying at an average rate of 42 kg per 1 m2 from the nozzle of the road stabilizer spraying device. The mixture is transferred to the road stabilizer while cutting and crushing to a depth of about 23 cm from the road surface and mixing the crushed materials and the sprayed slurry composition in one operation. Continuously and evenly spread the floor using the leveling device installed in the hood. Next, this is compacted with tire rollers, the road surface shape is adjusted with a grader, and then sufficiently compacted using tire rollers and iron wheel rollers to contain about 6% by weight of asphalt emulsion and about 4% by weight of cement. A strong roadbed (approximately 20 cm thick) was formed and a roadbed obtained by the method of the present invention was obtained.
さらに、その表面にアスフアルト乳剤
（JISK2208 PK−３）を１m2当り１の割合で散
布し、直後に７号砕石を１m2当り0.004m3の割合
で敷きならしローラで軽く転圧し、交通に開放し
た。１ケ月経過後に、その上面に密粒度加熱アス
フアルトコンクリートを厚さ４cmに舗設し、交通
開放したがひび割れ、フラツシユ、流動などがな
く非常に良好である。 Furthermore, asphalt emulsion (JISK2208 PK-3) was sprinkled on the surface at a rate of 1 / m2 , and immediately after that, No. Opened. After one month, dense-grained heated asphalt concrete was laid on the top surface to a thickness of 4 cm, and it was opened to traffic, but it was in very good condition with no cracks, flashes, or flow.
実施例 ２
路床（ローム質土）上に切込砕石層（40mm以
下）の厚さ約20cm、粒度調整砕石層の厚さ約５cm
を順次積層してなる路盤の表面に、実施例１で用
いたと同様な走自式ロードスタビライザを用い、
実施例と同様な方法で、セメント混合用アスフア
ルト乳剤（商品名 アスゾルＡ、日瀝化学工業株
式会社製品、蒸発残留物60重量％、蒸発残留物の
針入度88／25℃）50重量部と早強ポルトランドセ
メント30重量部とを混合してなるスラリー状組成
物を１m2当り26Kgの割合で平均に散布しながら、
その移行するロードスタビライザで路盤表面から
約18cm下の深さまでの切削、破砕と、それら切
削、破砕物と散布したスラリー状組成物との混合
を一回の操作で同時に行い、その混合物をロード
スタビライザの移行により併せて連続的に均一に
敷きならし、以下実施例１と同様な方法で処理し
てアスフアルト乳剤約５重量％、セメント約３重
量％を含有する強固な路盤（厚さ約15cm）を形成
し、本発明の方法による路盤を得た。Example 2 On the roadbed (loamy soil), the thickness of the incised crushed stone layer (40 mm or less) is approximately 20 cm, and the thickness of the particle size-adjusted crushed stone layer is approximately 5 cm.
A self-propelled road stabilizer similar to that used in Example 1 was used on the surface of the roadbed formed by sequentially laminating the following:
In the same manner as in Example, 50 parts by weight of asphalt emulsion for cement mixing (trade name Assol A, product of Nichire Chemical Industry Co., Ltd., evaporation residue 60% by weight, penetration of evaporation residue 88/25°C) was added. While spraying a slurry composition made by mixing 30 parts by weight of early strength Portland cement at an average rate of 26 kg per 1 m2,
The moving road stabilizer simultaneously performs cutting and crushing to a depth of approximately 18 cm below the roadbed surface, and mixes the cut and crushed material with the sprayed slurry composition in a single operation, and then transfers the mixture to the road stabilizer. , and then treated in the same manner as in Example 1 to form a strong roadbed (about 15 cm thick) containing about 5% by weight of asphalt emulsion and about 3% by weight of cement. A roadbed was obtained by the method of the present invention.
次いで、アスフアルト乳剤（JIS K2208 PK−
３）を１m2当り0.8散布し、直ちに粗目砂を１
m2当り0.003m3平均に敷きならしてシールコート
を施した後交通開放し、２週間後にその表面に密
粒度型加熱アスフアルトコンクリートを厚さ４cm
に舗設した。 Next, asphalt emulsion (JIS K2208 PK-
Spread 3) at 0.8 / m2 and immediately add 1/2 coarse sand.
0.003m/m2 / 3 After leveling and applying a seal coat, it will be opened to traffic, and two weeks later, dense-grain heated asphalt concrete will be applied to the surface to a thickness of 4cm.
It was established in
実施例 ３
砂利道（砂利層の厚さ約12cm）上に切込砕石層
（40mm以下）の厚さ約13cmを積層した路盤の表面
に、スラリー状組成物の吸込と圧送のできる定量
ポンプと散布装置を設備した自走式ロードスタビ
ライザとスラリー状組成物の製造装置を設備した
別の車輌とを用い、実施例１と同様の方法によつ
てセメント混合用アスフアルト乳剤（蒸発残留物
60重量％、蒸発残留物の針入度78／25℃）50重量
部に工業用消石灰50重量部、水10重量部を添加混
合して造られたスラリー状組成物を１m2当り58Kg
の割合で平均に散布しながら、その移行するロー
ドスタビライザで路盤の表面から約30cm下の深さ
までの切削、破砕と、それら切削、破砕物と散布
したスラリー状組成物との混合とを一回の操作で
同時に行い、その混合物はロードスタビライザの
移行により併せて連続的に均一に敷きならし、以
下実施例１と同様の方法で処理してアスフアルト
乳剤約５重量％、消石灰約５重量％を含有する強
固な路盤（厚さ約25cm）を形成し、本発明の方法
による路盤を得た。Example 3 A metering pump capable of sucking and pumping a slurry-like composition was installed on the surface of a roadbed consisting of a gravel road (gravel layer thickness of about 12 cm) and a crushed stone layer (40 mm or less) about 13 cm thick. Asphalt emulsion for cement mixing (evaporation residue
A slurry composition made by adding and mixing 50 parts by weight of industrial slaked lime and 10 parts by weight of water to 50 parts by weight (60% by weight, penetration of evaporation residue 78/25°C) was 58 kg per 1 m2.
While spraying at an average rate of The mixture was spread continuously and uniformly by the transfer of the load stabilizer, and then treated in the same manner as in Example 1 to add about 5% by weight of asphalt emulsion and about 5% by weight of slaked lime. A strong roadbed (approximately 25 cm thick) containing the following materials was formed, and a roadbed was obtained by the method of the present invention.
その上面に実施例２と同様なアスフアルト乳剤
と粗目砂によるシールコートを施して２週間交通
開放した後、さらにその表面に密粒度型加熱アス
フアルトコンクリートを厚さ３cmに舗設した。 A seal coat of asphalt emulsion and coarse sand similar to that in Example 2 was applied to the top surface, and after the building was opened to traffic for two weeks, dense-grain heated asphalt concrete was further paved on the surface to a thickness of 3 cm.
Claims (1)
は石灰あるいは両者の併用物を混合してなるスラ
リー状組成物を散布しながら、ロードスタビライ
ザなどを用いて路盤の表面から路盤または路床の
所定の深さまで切削、破砕とスラリー状組成物の
混合とを同時に行うと共に生成した混合物を平坦
に敷きならしローラなどを用いて締固めることを
特徴とする路盤の安定処理方法。1. While spraying a slurry composition made by mixing a predetermined amount of bituminous emulsion and cement, lime, or a combination of both onto the roadbed, use a road stabilizer etc. to spread the slurry composition from the surface of the roadbed to a specified location on the roadbed or subgrade. A method for stabilizing a roadbed, characterized by simultaneously performing cutting and crushing to a depth of 1,000, and mixing a slurry composition, and also compacting the resulting mixture using a leveling roller or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11349979A JPS5639203A (en) | 1979-09-06 | 1979-09-06 | Stabilizing treatment of road foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11349979A JPS5639203A (en) | 1979-09-06 | 1979-09-06 | Stabilizing treatment of road foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5639203A JPS5639203A (en) | 1981-04-14 |
| JPS6149446B2 true JPS6149446B2 (en) | 1986-10-29 |
Family
ID=14613860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11349979A Granted JPS5639203A (en) | 1979-09-06 | 1979-09-06 | Stabilizing treatment of road foundation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5639203A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037935A (en) * | 1973-07-13 | 1975-04-09 |
-
1979
- 1979-09-06 JP JP11349979A patent/JPS5639203A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037935A (en) * | 1973-07-13 | 1975-04-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5639203A (en) | 1981-04-14 |
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