JP2007092497A - Road pavement works utilizing photocatalystic reaction of titanium oxide or the like - Google Patents

Road pavement works utilizing photocatalystic reaction of titanium oxide or the like Download PDF

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JP2007092497A
JP2007092497A JP2005311907A JP2005311907A JP2007092497A JP 2007092497 A JP2007092497 A JP 2007092497A JP 2005311907 A JP2005311907 A JP 2005311907A JP 2005311907 A JP2005311907 A JP 2005311907A JP 2007092497 A JP2007092497 A JP 2007092497A
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pavement
titanium oxide
works
tire
spray coating
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Masahiro Yuki
正博 結城
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Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that we need to stop pavement works in summer time or to change construction works at night time since an ordinal solution such as a road pavement cooling device or the like is not enough to obtain a substantial effect due to deformation of paving surface by a tire load of automobile and generation of rut drilling at initial stage because an asphalt pavement has fluidity when the surface temperature is more than 60°C. <P>SOLUTION: A photocatalystic reaction of titanium oxide is utilized for prevention of asphalt adhesion by lowering the paving surface temperature in order to clear a traffic jam in asphalt pavement works, especially in maintenance and repair pavement works, and environmental load substances discharged from an automobile are simultaneously degraded and purified. A spray coating device 3 of titanium oxide solvent is installed to a tire roller 1 and a spray coating is applied on the tire surface and the paving surface. The titanium oxide solvent is sucked from a solvent tank 6 with a booster pump 4 and fed to the spray coating device 3 to make a structure capable of performing above-mentioned works. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、アスファルト道路舗装工事に関するものである。アスファルト舗装における問題の一つに、舗装材が転圧機械のタイヤや、鉄輪、プレート等に付着し瘤が生成されその影響により舗装路面を荒らす問題がある。
その問題の解決に転圧機械に散水装置や、散油装置を設けタイヤや、鉄輪、プレート等に噴霧して付着の防止をしているが、舗装技術・舗装材料の進歩により十分な付着防止が困難となっている、更に散油や界面活性剤の添加等による変色や分離等の問題が発生している。本発明はこれらの課題を解決すると同時に自動車から排出される環境負荷物質を浄化する技術である。
The present invention relates to asphalt road pavement construction. One of the problems in asphalt pavement is the problem that the pavement material adheres to the tires, iron wheels, plates, etc. of the rolling compaction machine and generates an aneurysm that roughens the pavement surface.
In order to solve this problem, the rolling machine is equipped with a watering device or oiling device to prevent the adhesion by spraying on tires, steel wheels, plates, etc. In addition, there are problems such as discoloration and separation due to the addition of oil sprays and surfactants. The present invention solves these problems and at the same time is a technology for purifying environmentally hazardous substances discharged from automobiles.

従来の散水による付着防止技術は、通常のタイヤや鉄輪に噴霧しその濡れ性により界面を作り付着を防止していた。本発明はタイヤや鉄輪の濡れ性を酸化チタン(光触媒)と光源によるの親水性を利用し、水の薄膜がタイヤや鉄輪の表面全体に均一に広がり、付着防止機能を向上させるものである。その相乗効果として余分の噴霧水の薄膜蒸発が促進され、その蒸発潜熱によりタイヤや鉄輪の温度低下が得られ舗装面の温度を低下させる効果がある。
又、酸化チタン(光触媒)の超親水性によりタイヤや鉄輪のアスファルト付着性が減少することにより散水量の減少が可能となる(舗装の密着性劣化防止)。
この効果は請求項1・請求項2・請求項3・のいずれの場合でも得られるが、請求項1の酸化チタン溶剤のスプレーコーティング装置を設ければ、タイヤや鉄輪のコーティング処理後、舗装面に酸化チタン溶剤の噴霧がノズル角度の変更により可能となり舗装面に光触媒としてコーティングして、自動車の排気ガスの有害物資を分解する効果が得られ、環境浄化機能をもつ舗装が安価に得られる(維持工事分散型施行方式)。
さらに、夏季の維持舗装で問題とされている交通開放後の初期轍掘れの問題、すなわち、舗装後の路面温度=道路運用開始温度60℃以下を早期に得るために設置されている舗装路面冷却装置(後述)の噴霧水が、酸化チタンの親水性により水の接触角が2〜3度に低下する作用により舗装表面で薄膜化するため、滞留水の厚膜生成による熱の『こもり』が防止され水の蒸発が促進する。その効果により路面の温度低下が促進され工事の経済効果と早期交通開放が得られる。新設舗装工事や維持工事に自動車から排出されるNOxやSOx等有害物資を分解浄化する光触媒を道路にコーティングすればその環境浄化効果は膨大である、また、コーティングされた光触媒は舗装面の微小な窪みに滞留するため、タイヤとの摩擦による剥離が起こらない。夜間の舗装工事においてはタイヤや鉄輪にコーティングされた酸化チタン(光触媒)の反応光源は太陽光で得られないため、発光ダイオード等の光源を設置する必要がある。
The conventional anti-adhesion technique by watering sprays normal tires and steel wheels to form an interface due to its wettability and prevent adhesion. The present invention uses a hydrophilic property of titanium oxide (photocatalyst) and a light source for the wettability of a tire or an iron wheel, and a thin film of water spreads uniformly over the entire surface of the tire or iron wheel, thereby improving the adhesion preventing function. As a synergistic effect, thin film evaporation of excess spray water is promoted, and the latent heat of vaporization reduces the temperature of tires and iron wheels, thereby reducing the temperature of the pavement surface.
In addition, the superhydrophilicity of titanium oxide (photocatalyst) reduces the asphalt adhesion of tires and iron wheels, thereby reducing the amount of sprinkling (preventing deterioration of pavement adhesion).
This effect can be obtained in any of claims 1, 2, and 3. However, if the titanium oxide solvent spray coating apparatus of claim 1 is provided, the pavement surface after the coating treatment of tires and iron wheels In addition, it is possible to spray titanium oxide solvent by changing the nozzle angle, coating the pavement surface as a photocatalyst, and obtaining the effect of decomposing harmful substances of automobile exhaust gas, and pavement with environmental purification function can be obtained at low cost ( Maintenance work decentralized enforcement method).
Furthermore, the problem of initial digging after opening of traffic, which is a problem in maintenance pavement in summer, that is, the road surface cooling after pavement = the pavement surface cooling installed to obtain the road operation start temperature below 60 ° C early. The spray water of the device (described later) is thinned on the pavement surface due to the action of the water contact angle decreasing to 2 to 3 degrees due to the hydrophilicity of titanium oxide. Prevents water evaporation. As a result, the temperature drop on the road surface is promoted, and the economic effect of construction and early traffic opening are obtained. If a road is coated with a photocatalyst that decomposes and purifies NOx, SOx, and other hazardous materials discharged from automobiles during new paving work and maintenance work, the environmental purification effect will be enormous, and the coated photocatalyst will have a very small pavement surface. Since it stays in the recess, it does not peel off due to friction with the tire. In nighttime paving work, the reaction light source of titanium oxide (photocatalyst) coated on tires and iron wheels cannot be obtained by sunlight, so it is necessary to install a light source such as a light emitting diode.

この様にすれば、本来のアスファルトの付着防止と、温暖化の進捗による真夏日の長期化がもたらす維持舗装工事規制の緩和や、早期の交通開放効果、更に舗装面に残留する酸化チタンの光触媒効果が自動車の排気ガスの有害物資分解する環境浄化作用が得られる。又、特殊舗装にたいする油分や界面活性剤等の有害有機物の混入が防止出来ヒートアイランド現象を緩和する透水性舗装や、保水性舗装の舗装材の選択範囲が拡大する。上述の自動車から排出されるNOxやSOx更に粒状黒煙等の有害物資の排出問題は重大である、その問題解決に安価で効果的な方法が本発明による『道路舗装施行時に、既存の機械で同時施行する工事方法』である。尚、専用の散布機でタイヤや舗装面にコーティングする方法も考えられる。In this way, the prevention of original asphalt adhesion, the relaxation of the maintenance pavement construction regulations brought about by the prolongation of the midsummer days due to the progress of global warming, the early traffic opening effect, and the photocatalyst of titanium oxide remaining on the pavement surface The effect is to purify the environment by decomposing harmful substances in automobile exhaust gas. In addition, the selection range of water-permeable pavement and water-retaining pavement materials that can prevent the mixing of oils and surfactants and other harmful organic substances for special pavement and reduce the heat island phenomenon will be expanded. The problem of emission of harmful substances such as NOx and SOx emitted from automobiles and granular black smoke is a serious problem. An inexpensive and effective method for solving the problem is the “ It is a construction method that takes effect simultaneously. In addition, the method of coating a tire and a pavement surface with a special spreader is also considered.

本発明は、機能付加型の道路舗装工事方法である、酸化チタン(光触媒)の親水性や超親水性を舗装工事に利用し従来の問題の解決をすると同時に、道路に自動車から排出される環境負荷物資の分解浄化機能を付加する技術である。
請求項1についてタイヤローラで形態の説明をすれば、タイヤローラ1に既存のタイヤ散水装置2以外に舗装面に近い位置にスプレーコーティング装置3を設ける。
スプレーコーティング装置に水、若しくは溶剤を供給する加圧ポンプ4を新規にもうける(若しくは既存の散水ポンプの流用)。
スプレーコーティン装置にノズル角度の変更装置5を設ける。
新規の溶剤タンク6を設ける(既存のタンク8を溶剤タンクとして利用する場合もある)。既存タンク8および新規の溶剤タンク6より加圧ポンプ4に至る配管と切り替えバルブ7を設ける。
以上のように装置し、次に、使用方法の説明をすると、舗装工事開始前に溶剤タンク6の溶剤を加圧ポンプ4にて、タイヤ全面にスプレーコーティング装置3から酸化チタン溶剤を噴霧させコーティングし乾燥させる、つぎ舗装工事にはいりタイヤへの付着防止のため、既存のタイヤ散水装置2よりタイヤに散水し舗装工事を進める。
舗装終了後、スプレーコーティング装置3より、溶剤タンク6より酸化チタン溶剤を舗装面に噴霧させ光触媒として固定乾燥させる。つぎに既存のタンク8の水を配管と切り替えバルブ7を切り替え、加圧のポンプより水の微細粒子をスプレーコーティング装置3により舗装面に散布し、水の気化熱で舗装温度の低下を低下させる舗装冷却装置として利用する、散布された冷却水は舗装面で薄膜蒸発し温度の低下が促進される。更に舗装完了後、酸化チタン溶剤は舗装表面に固定され、道路運用後自動車から排出されるSOxやNOxや粒状黒煙等の環境負荷物資を分解浄化させる光触媒機能がもたらされる。請求項2及び、請求項3は舗装接触面に酸化チタン等の光触媒機能材を付加された素材を使用する方法である、その場合も酸化チタン溶剤のスプレーコーティング装置を設置すれば舗装後に上述の光触媒効果を得る事が出来る。
スプレーコーティング装置3、及び、加圧ポンプ4は上述の場合、舗装冷却装置の水の噴霧と、酸化チタン溶剤の散布の両方の役割を持たせているが、別々の噴霧・散布装置を設置しても同等の効果が得られる。既存タンクを溶剤タンクとして利用する場合は噴霧量が多くなるために、酸化チタン溶剤を希釈して使用する。
The present invention is a function-added road pavement construction method, which uses the hydrophilicity or superhydrophilicity of titanium oxide (photocatalyst) for pavement construction to solve the conventional problems and at the same time, is an environment that is discharged from automobiles on the road This is a technology that adds a function for decomposing and purifying load materials.
If a tire roller is demonstrated about Claim 1, the spray coating apparatus 3 will be provided in the tire roller 1 in the position close | similar to a pavement surface other than the existing tire watering apparatus 2.
A new pressure pump 4 for supplying water or a solvent to the spray coating apparatus is newly provided (or diversion of an existing watering pump).
A nozzle angle changing device 5 is provided in the spray coating device.
A new solvent tank 6 is provided (the existing tank 8 may be used as a solvent tank). A pipe extending from the existing tank 8 and the new solvent tank 6 to the pressure pump 4 and a switching valve 7 are provided.
Next, the method of use will be described. Before starting the paving work, the solvent in the solvent tank 6 is sprayed with the titanium oxide solvent from the spray coating device 3 on the entire surface of the tire by the pressure pump 4. Then, in the next pavement work to be dried, the pavement work is carried out by watering the tire from the existing tire sprinkler 2 in order to prevent adhesion to the tire.
After the pavement is finished, the titanium oxide solvent is sprayed from the solvent tank 6 to the pavement surface from the spray coating apparatus 3 and fixed and dried as a photocatalyst. Next, the water in the existing tank 8 is switched between the piping and the switching valve 7, fine particles of water are sprayed on the pavement surface by the spray coating device 3 from the pressurizing pump, and the decrease in pavement temperature is reduced by the heat of vaporization of water. The sprayed cooling water used as a pavement cooling device evaporates into a thin film on the pavement surface and promotes a decrease in temperature. Further, after the pavement is completed, the titanium oxide solvent is fixed to the pavement surface, thereby providing a photocatalytic function for decomposing and purifying environmentally hazardous substances such as SOx, NOx, and granular black smoke discharged from the automobile after road operation. Claims 2 and 3 are methods of using a material in which a photocatalytic functional material such as titanium oxide is added to the pavement contact surface. In this case as well, if a titanium oxide solvent spray coating device is installed, the above described after pavement. A photocatalytic effect can be obtained.
In the above-mentioned case, the spray coating device 3 and the pressure pump 4 have both the role of spraying the water of the pavement cooling device and the spraying of the titanium oxide solvent, but separate spraying and spraying devices are installed. However, the same effect can be obtained. When an existing tank is used as a solvent tank, the amount of spray increases, so the titanium oxide solvent is diluted before use.

タイヤローラ後部の装着斜視図。  The mounting perspective view of a tire roller rear part.

符号の説明Explanation of symbols

1 タイヤローラ後部斜視図
2 既設のタイヤ散水装置
3 スプレーコーティング装置
4 加圧ポンプ
5 ノズル角度変更装置
6 溶剤タンク
7 切り替えバルブ
8 既存タンク
1 Tire roller rear perspective view 2 Existing tire spraying device 3 Spray coating device 4 Pressure pump 5 Nozzle angle changing device 6 Solvent tank 7 Switching valve 8 Existing tank

Claims (3)

道路舗装転圧機械の舗装接触部(タイヤ・鉄輪・鉄板)に酸化チタン(光触媒)を担持した溶剤のコーティング、及び酸化チタン(光触媒)溶剤のスプレーコーティング装置を設けた、舗装工事及び、道路舗装機械。Pavement work and road pavement with titanium oxide (photocatalyst) solvent coating and titanium oxide (photocatalyst) solvent spray coating equipment on the pavement contact parts (tires, iron wheels, steel plates) of road pavement compaction machines machine. 酸化チタン(光触媒)を担持したシリカ、アルミナ、ゼオライト等を混入したタイヤ。A tire mixed with silica, alumina, zeolite, etc. carrying titanium oxide (photocatalyst). 表面に酸化チタン(光触媒)被覆層をもつ、鉄及びステンレス、チタン材を基材とした転圧ローラ、及び加圧プレート。A rolling roller and a pressure plate having a titanium oxide (photocatalyst) coating layer on the surface, iron and stainless steel, and a titanium material as a base material.
JP2005311907A 2005-09-28 2005-09-28 Road pavement works utilizing photocatalystic reaction of titanium oxide or the like Pending JP2007092497A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956364A (en) * 2010-08-20 2011-01-26 李洪顺 Method for spraying wheel-sticking preventing liquid on asphalt pavement compacting equipment
WO2013065769A1 (en) * 2011-11-01 2013-05-10 住友化学株式会社 Rubber composition and use therefor
WO2013065768A1 (en) * 2011-11-01 2013-05-10 住友化学株式会社 Rubber anti-aging agent
CN103194948A (en) * 2013-03-28 2013-07-10 郭子也 Pavement with durable and energy-saving traffic safety line and paving method thereof
CN103410076A (en) * 2013-07-31 2013-11-27 湖南三一路面机械有限公司 Tire road roller and fuel injection system thereof
CN108103902A (en) * 2017-12-21 2018-06-01 郑州国知网络技术有限公司 A kind of cement road construction spreading out device
KR102028924B1 (en) * 2018-08-17 2019-10-07 주식회사 비앤디네트웍스 A device coating of asphalt surfaces to reduce nitrogen oxides and fine dust
CN111172845A (en) * 2020-01-06 2020-05-19 陕西中大力鼎科技有限公司 Double-layer synchronous continuous-paving continuous-pressing integral forming construction method for water-stable large-thickness double-unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956364A (en) * 2010-08-20 2011-01-26 李洪顺 Method for spraying wheel-sticking preventing liquid on asphalt pavement compacting equipment
WO2013065769A1 (en) * 2011-11-01 2013-05-10 住友化学株式会社 Rubber composition and use therefor
WO2013065768A1 (en) * 2011-11-01 2013-05-10 住友化学株式会社 Rubber anti-aging agent
JP2013095856A (en) * 2011-11-01 2013-05-20 Sumitomo Chemical Co Ltd Rubber anti-aging agent
JP2013095857A (en) * 2011-11-01 2013-05-20 Sumitomo Chemical Co Ltd Rubber composition and use therefor
CN103194948A (en) * 2013-03-28 2013-07-10 郭子也 Pavement with durable and energy-saving traffic safety line and paving method thereof
CN103410076A (en) * 2013-07-31 2013-11-27 湖南三一路面机械有限公司 Tire road roller and fuel injection system thereof
CN108103902A (en) * 2017-12-21 2018-06-01 郑州国知网络技术有限公司 A kind of cement road construction spreading out device
KR102028924B1 (en) * 2018-08-17 2019-10-07 주식회사 비앤디네트웍스 A device coating of asphalt surfaces to reduce nitrogen oxides and fine dust
CN111172845A (en) * 2020-01-06 2020-05-19 陕西中大力鼎科技有限公司 Double-layer synchronous continuous-paving continuous-pressing integral forming construction method for water-stable large-thickness double-unit

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