JP5135866B2 - Porous pavement construction method - Google Patents
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この発明は、湿気硬化型ウレタン樹脂バインダーを用いたポーラス舗装の施工方法に係わり、更に詳しくは舗装材混合物を現場の下地路面に敷設した後に、舗装材混合物を効率良く硬化促進させることを可能としたポーラス舗装の施工方法に関するものである。 The present invention relates to a method for constructing a porous pavement using a moisture-curing urethane resin binder, and more specifically, after the pavement mixture is laid on the ground road surface in the field, the pavement mixture can be efficiently cured and accelerated. The present invention relates to a method for constructing porous pavement.
従来、一般車道や、歩道，運動場，公園等を舗装する場合に、低騒音性，衝撃吸収性等を高めるために、骨材と湿気硬化型のウレタン樹脂バインダーとを混合させて構成した舗装材混合物を、現場の下地路面に敷設して固結するポーラス舗装の施工方法が知られている。前記骨材には、ゴムチップ等の弾性骨材と、砂，小石等の硬質骨材とがあり、この弾性骨材及び硬質骨材をそれぞれ単独、または混合して使用する場合がある（例えば、特許文献１参照）。 Conventionally, when paving general roadways, sidewalks, playgrounds, parks, etc., paving material composed of a mixture of aggregate and moisture-curing urethane resin binder to enhance low noise and shock absorption There is known a construction method for porous pavement in which a mixture is laid on a ground road surface in a site and consolidated. The aggregate includes an elastic aggregate such as a rubber chip and a hard aggregate such as sand and pebbles, and the elastic aggregate and the hard aggregate may be used alone or in combination (for example, Patent Document 1).
このような現場施工型の湿気硬化型ウレタン樹脂バインダーを用いたポーラス舗装は、施工後の供用開始までの養生時間（硬化して使用可能な状態に到る時間）は、外気や下地の温度，湿度に依存する場合が多く、例えば、夏場の外気温度が高い場合と、冬場の外気温度や下地が低い場合では大きな差があった。 Porous pavement using a moisture-curable urethane resin binder of such on-site construction type, the curing time until the start of service after construction (the time to reach a usable state after curing) is the temperature of the outside air and the ground, In many cases, it depends on humidity. For example, there is a large difference between the case where the outdoor temperature in summer is high and the case where the outdoor temperature and groundwork in winter are low.
そこで、養生時間を短縮させるために、舗装材混合物の樹脂バインダーに硬化促進剤や触媒等を添加したり、またスチームや水を霧状に散布する方法が行われている。然しながら、硬化促進剤や触媒等を添加する方法は、硬化時間を短縮することは出来るが、ワークライフが短くなり、作業性に問題が残り、また後者のスチームや水を霧状に散布する方法は、施工路面の表面部のみ硬化が促進され、深部の硬化促進効果が小さいと言う問題がある。 Therefore, in order to shorten the curing time, a method of adding a curing accelerator, a catalyst, or the like to the resin binder of the paving material mixture, or spraying steam or water in a mist form is performed. However, the method of adding a curing accelerator or catalyst can shorten the curing time, but the work life is shortened and the workability remains, and the latter method of spraying steam and water in the form of a mist However, there is a problem in that only the surface portion of the construction road surface is hardened and the effect of promoting deep hardening is small.
そもそもポーラス舗装の施工路面の表面部近傍は、外気の水分により硬化の進行は早いが、深部は遅く、養生時間を律速している。そこで、いかにポーラス舗装の深部を早く硬化させるか本願発明者は種々の実験を行った結果、この発明の知見を得た。
この発明はかかる従来の問題点に着目し、舗装材混合物を現場の下地路面に敷設した後に、舗装材混合物を表面部から深部まで効率良く水と反応させ硬化を促進させることで、養生時間の短縮化と、供用開始を早めることが出来るポーラス舗装の施工方法を提供することを目的とするものである。 The present invention pays attention to such conventional problems, and after laying the pavement material mixture on the ground road surface in the field, the pavement material mixture is efficiently reacted with water from the surface part to the deep part to promote curing, thereby reducing the curing time. The object of the present invention is to provide a method for constructing a porous pavement that can be shortened and start operation in advance.
この発明は上記目的を達成するため、舗装材混合物を現場の下地路面に敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後所定時間経過後に所定量の水を散水し、前記水の噴霧量が、50〜500 ｇ／ｍ 2 であり、前記水の散水量が、800g／ｍ 2 以上であり、前記舗装路面の透水量が、100cc/15sec 以上であることを要旨とするものである。 In order to achieve the above object, the present invention achieves the above object by spraying a predetermined amount of water on the surface of the paved road surface after a predetermined time has elapsed after laying the pavement mixture on the ground surface of the site, and then a predetermined amount of water after the predetermined time has elapsed. The water spray amount is 50 to 500 g / m 2 , the water spray amount is 800 g / m 2 or more, and the water permeability of the paved road surface is 100 cc / 15 sec or more. This is the gist.
また前記水の散水は、所定時間を隔てて２回以上繰返し行い、前記水の水温は、３０°Ｃ以上、８０°Ｃ以下に設定し、更にウレタン樹脂バインダーのウレタン樹脂は、３０°Ｃ以上、８０°Ｃ以下に加温するものである。 The water sprinkling is repeated twice or more at a predetermined time, the water temperature is set to 30 ° C. or higher and 80 ° C. or lower, and the urethane resin of the urethane resin binder is 30 ° C. or higher. , 80 ° C. or less.
また、前記ウレタン樹脂バインダーのウレタン樹脂は、１液性湿気硬化型であり、ウレタン樹脂に硬化促進剤を含ませて構成することも可能である。また前記水に硬化促進剤を混合分散させたものを、噴霧，散水することも可能である。 Further, the urethane resin of the urethane resin binder is a one-component moisture-curing type, and can be configured by including a curing accelerator in the urethane resin. It is also possible to spray and spray water obtained by mixing and dispersing the curing accelerator in the water.
このように、舗装材混合物を現場の下地路面に敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後所定時間経過後に所定量の水を散水することにより、舗装材混合物の表面部から深部まで効率良く水と反応させて硬化を促進させることが出来るものである。 Thus, after laying the pavement material mixture on the ground road surface of the site, after elapse of a predetermined time, spraying a predetermined amount of water on the surface of the pavement road surface, and then spraying a predetermined amount of water after elapse of the predetermined time, Curing can be promoted by efficiently reacting with water from the surface portion to the deep portion of the paving material mixture.
即ち、ポーラス舗装の施工路面の表面部近傍は、外気の水分により深部より硬化は進行し易く、その部分に更に霧状の水を噴霧すると、深部より更に硬化が進行する。このように、表面部近傍の硬化度を先に上げることにより、表面部近傍の空隙を十分に確保でき、大量の水を散水しても、ウレタン樹脂と水との反応により発生するガス（二酸化炭素）も抜け易くなり発泡し難くくなる。 That is, the vicinity of the surface portion of the road surface of the porous pavement is more likely to harden than the deep portion due to moisture from the outside air. Thus, by increasing the degree of cure in the vicinity of the surface portion first, a sufficient space in the vicinity of the surface portion can be secured. Carbon) is easily removed and foaming is difficult.
具体的には、施工時の温度，湿度により硬化条件は変わるが、舗装材混合物の敷設後、３０分〜３時間後に霧状に50〜500g／ｍ２の水を噴霧し、施工路面の表面部近傍の硬化を促進し、その後１〜２時間後に舗装材混合物全体に800g／ｍ２以上の大量の水を散水し、舗装材混合物全体のウレタン樹脂バインダーに水が接触するようにすることにより、外観を損なうことなく、著しく硬化を促進させることが出来る。また、大量の水は繰返し何回散水しても良い。 Specifically, the curing conditions vary depending on the temperature and humidity at the time of construction, but after laying the pavement mixture, 30 to 3 hours later, spraying 50 to 500 g / m 2 of water in the form of a mist, the surface of the construction road surface By accelerating the curing of the vicinity of the part, and then spraying a large amount of water of 800 g / m 2 or more over the entire paving material mixture after 1 to 2 hours so that the water contacts the urethane resin binder of the entire paving material mixture. Curing can be remarkably accelerated without impairing the appearance. A large amount of water may be repeatedly sprinkled.
また、現場の下地路面にプライマーを塗布し、乾燥した後にタックコートとして、ウレタン樹脂バインダーと硬化促進剤を混合したものを塗布し、上記のような舗装材混合物を敷設することにより、最も硬化の遅い最下部の硬化を速めることが出来る。更に、ウレタン樹脂バインダーを加温したり、温水を使用することにより、更に硬化促進の効果を高めることが可能である。 Also, by applying a primer on the ground surface of the site, drying it, and then applying a mixture of urethane resin binder and curing accelerator as a tack coat, and laying the pavement mixture as described above, the most cured Slow bottom cure can be accelerated. Furthermore, the effect of accelerating curing can be further enhanced by heating the urethane resin binder or using warm water.
この発明は、上記のように舗装材混合物を現場の下地路面に敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後所定時間経過後に所定量の水を散水し、前記水の噴霧量が、50〜500 ｇ／ｍ 2 であり、前記水の散水量が、800g／ｍ 2 以上であり、前記舗装路面の透水量が、100cc/15sec 以上であるので、ポーラス舗装の養生時間の短縮化を図ることが出来、供用開始を早めることが出来る効果がある。 In this invention, after the pavement mixture is laid on the ground road surface in the field as described above, after a predetermined time has elapsed, a predetermined amount of water is sprayed on the surface of the pavement road surface, and after a predetermined time has elapsed, a predetermined amount of water is sprinkled. The water spray amount is 50 to 500 g / m 2 , the water spray amount is 800 g / m 2 or more, and the water permeability of the paved road surface is 100 cc / 15 sec or more , The curing time of the porous pavement can be shortened, and there is an effect that the start of operation can be accelerated.
この発明の実施形態では、透水性を有するウレタン樹脂系ポーラス舗装を施工する場合に、季節の気温や湿度等の外部環境に影響されずに現場敷設後の養生時間の短縮化を図ることが出来、この結果、施工したポーラス舗装の供用開始を早めることが出来るようにしたものである。 In the embodiment of the present invention, when a urethane resin porous pavement having water permeability is constructed, the curing time after laying on the site can be shortened without being affected by the external environment such as seasonal temperature and humidity. As a result, the start of in-use of the constructed porous pavement can be accelerated.
その具体的な実施形態としては、先ず施工現場（例えば、一般車道や、歩道，運動場，公園等）において、弾性骨材（例えば、ゴムチップやゴムの粉末等、10mm以下の大きさのもの) 及び／または硬質骨材（例えば、川砂利，川砂等の天然石から成る天然骨材，砕石，スラグ，セラミック等の人工骨材を含む）と、湿気硬化型の１液性のウレタン樹脂バインダーとを所定の割合でミキサー等に投入し混合させて舗装材混合物を作製する。 As a specific embodiment thereof, first, at the construction site (for example, a general roadway, a sidewalk, a playground, a park, etc.) / Or hard aggregate (for example, natural aggregate made of natural stone such as river gravel or river sand, artificial aggregate such as crushed stone, slag, ceramic) and moisture-curing one-component urethane resin binder The mixture is put into a mixer or the like at a ratio and mixed to prepare a paving material mixture.
そして、このようにして製作した舗装材混合物を現場の下地路面に、透水量を100cc/15sec 以上に設定した所定の厚さ（例えば、３０ｍｍ）の舗装路面を敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後、所定時間経過後に所定量の水を散水する。 And after laying the paved road surface of the predetermined thickness (for example, 30 mm) which set the amount of water permeability to 100cc / 15sec or more on the ground road surface of the field, the paving material mixture produced in this way, after a predetermined time, A predetermined amount of water is sprayed on the surface of the paved road surface, and then a predetermined amount of water is sprayed after a predetermined time.
ここで、噴霧とは一般に噴霧器と呼称される塗布器や霧状スプレーによるもので、散水とは、ジョーロやホースによる放水等を言う。また透水量は、舗装試験法便覧（昭和６３年１１月、社団法人日本道路協会発行）に示される現場透水試験器によるものである。 Here, spraying is based on an applicator or mist spray that is generally referred to as a sprayer, and watering refers to water discharge by a joro or hose. Further, the water permeability is based on the on-site water permeability tester shown in the Pavement Test Method Handbook (November 1988, issued by the Japan Road Association).
前記水の噴霧量が、50〜500 ｇ／ｍ2 であり、前記水の散水量が、800g／ｍ2以上である。前記水の散水を、所定時間を隔てて２回以上繰返し行うのが好ましく、また前記水の水温は、３０°Ｃ以上、８０°Ｃ以下に設定するのが好ましい。 The water spray amount is 50 to 500 g / m 2 , and the water spray amount is 800 g / m 2 or more . The water sprinkling is preferably repeated twice or more at a predetermined time, and the water temperature is preferably set to 30 ° C. or higher and 80 ° C. or lower.
更に、前記舗装材混合物を製作する際、前記ウレタン樹脂バインダーのウレタン樹脂を、３０°Ｃ以上、８０°Ｃ以下に加温することが好ましい。また前記ウレタン樹脂バインダーは、ウレタン樹脂と硬化促進剤とを含んだものが硬化を促進するため好ましく、水に硬化促進剤を混合分散させたものを、噴霧，散水することも可能である。 Furthermore, when manufacturing the said pavement material mixture, it is preferable to heat the urethane resin of the said urethane resin binder to 30 degreeC or more and 80 degrees C or less. The urethane resin binder preferably contains a urethane resin and a curing accelerator because it accelerates the curing, and a mixture obtained by mixing and dispersing a curing accelerator in water can be sprayed and sprinkled.
硬化促進剤としては、有機アミン系または金属系の触媒、ＴＥＤＡギ酸ブロック、ＤＢＯオクチル塩酸等、フェノールブロックアミン触媒、ＤＢＵフェノール塩等を使用する。 As the curing accelerator, an organic amine-based or metal-based catalyst, a TEDA formic acid block, DBO octyl hydrochloric acid or the like, a phenol block amine catalyst, a DBU phenol salt, or the like is used.
この発明の実施形態では、舗装材混合物を現場の下地路面に敷設した後、所定時間経過後に舗装路面の表面に所定量の水を噴霧し、その後、所定時間経過後に所定量の水を散水することにより、舗装材混合物を表面部から深部まで効率良く水と反応させ硬化を促進させることが出来る。 In the embodiment of the present invention, after laying the pavement material mixture on the ground road surface in the field, a predetermined amount of water is sprayed on the surface of the pavement road surface after a predetermined time has elapsed, and then a predetermined amount of water is sprinkled after the predetermined time has elapsed. Thus, the paving material mixture can be efficiently reacted with water from the surface portion to the deep portion to promote curing.
即ち、ポーラス舗装の施工路面の表面部近傍は、外気の水分により深部より硬化は進行し易く、その部分に更に霧状の水を噴霧すると、深部より更に硬化が進行する。このように、表面部近傍の硬化度を先に上げることにより、表面部近傍の空隙を十分に確保でき、大量の水を散水しても、ウレタン樹脂と水との反応により発生するガス（二酸化炭素）も抜け易くなり発泡し難くくなる。 That is, the vicinity of the surface portion of the road surface of the porous pavement is more likely to harden than the deep portion due to the moisture of the outside air, and when further mist water is sprayed on that portion, the hardening further proceeds from the deep portion. Thus, by increasing the degree of cure in the vicinity of the surface portion first, a sufficient space in the vicinity of the surface portion can be secured. Carbon) is easily removed and foaming is difficult.
具体的には、施工時の温度，湿度により硬化条件は変わるが、舗装材混合物の敷設後、３０分〜３時間後に霧状に50〜500g／ｍ２の水を噴霧し、施工路面の表面部近傍の硬化を促進し、その後１〜２時間後に舗装材混合物全体に800g／ｍ２以上の大量の水を散水し、舗装材混合物全体のウレタン樹脂バインダーに水が接触するようにすることにより、外観を損なうことなく、著しく硬化を促進させることが出来る。また、ウレタン樹脂との接触をより精度良くするために大量の水は繰返し何回散水しても良い。 Specifically, the curing conditions vary depending on the temperature and humidity at the time of construction, but after laying the pavement mixture, 30 to 3 hours later, spraying 50 to 500 g / m 2 of water in the form of a mist, the surface of the construction road surface By accelerating the curing of the vicinity of the part, and then spraying a large amount of water of 800 g / m 2 or more over the entire paving material mixture after 1 to 2 hours so that the water contacts the urethane resin binder of the entire paving material mixture. Curing can be remarkably accelerated without impairing the appearance. Moreover, in order to make the contact with the urethane resin more accurate, a large amount of water may be repeatedly sprinkled several times.
また、現場の下地路面にプライマーを塗布し、乾燥した後にタックコートとして、ウレタン樹脂バインダーと硬化促進剤を混合したものを塗布し、上記のような舗装材混合物を敷設することにより、最も硬化の遅い最下部の硬化を速めることが出来る。更に、ウレタン樹脂バインダーを加温したり、温水を使用することにより、更に硬化促進の効果を高めることが可能である。 Also, by applying a primer on the ground surface of the site, drying it, and then applying a mixture of urethane resin binder and curing accelerator as a tack coat, and laying the pavement mixture as described above, the most cured Slow bottom cure can be accelerated. Furthermore, the effect of accelerating curing can be further enhanced by heating the urethane resin binder or using warm water.
〔実施例〕
弾性骨材と、硬質骨材と、湿気硬化型の１液性のウレタン樹脂バインダーとを所定の割合（例えば、５０：５０：３０）でミキサー等に投入し、混合させて舗装材混合物を得、現場の下地路面に所定の厚さ（例えば、３０ｍｍ）敷設して比較実験を行い、以下のような表−１の結果を得た。
〔Example〕
Elastic aggregate, hard aggregate, and moisture-curing one-component urethane resin binder are put into a mixer or the like at a predetermined ratio (for example, 50:50:30) and mixed to obtain a paving material mixture. A comparative experiment was conducted by laying a predetermined thickness (for example, 30 mm) on the ground road surface in the field.
以上のような表−１から明らかなように、舗装材混合物を現場の下地路面に敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後、所定時間経過後所定量の水を散水するので、ポーラス舗装材の養生時間の短縮化を図ることが出来、供用開始を早めることが出来る。 As is clear from Table 1 above, after laying the pavement mixture on the ground road surface in the field, after a predetermined time has elapsed, a predetermined amount of water is sprayed on the surface of the pavement road surface, and then after a predetermined time has elapsed. Since a predetermined amount of water is sprayed, the curing time of the porous pavement material can be shortened, and the start of service can be accelerated.
なお、表−１中、200 g/ｍ２は噴霧量を、1000 g/ｍ２は散水量を示している。 In Table 1, 200 g / m 2 represents the spray amount, and 1000 g / m 2 represents the water spray amount.
Claims (7)
前記舗装材混合物を現場の下地路面に敷設した後、所定時間経過後、舗装路面の表面に所定量の水を噴霧し、その後所定時間経過後に所定量の水を散水し、前記水の噴霧量が、50〜500 ｇ／ｍ 2 であり、前記水の散水量が、800g／ｍ 2 以上であり、前記舗装路面の透水量が、100cc/15sec 以上であることを特徴とするポーラス舗装の施工方法。 In the construction method of porous pavement, in which a pavement mixture composed of aggregate and moisture-curing urethane resin binder is laid on the ground road surface and consolidated,
After laying the paving material mixture to the underlying road surface site, after a predetermined time has elapsed, by spraying a predetermined amount of water on the surface of the pavement, then watering a predetermined amount of water after a predetermined time elapses, the spray amount of the water However, it is 50 to 500 g / m 2 , the water sprinkling amount is 800 g / m 2 or more, and the water permeability of the pavement surface is 100 cc / 15 sec or more. Method.
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| JPH02210104A (en) * | 1989-02-08 | 1990-08-21 | Dainippon Ink & Chem Inc | Constructing method with polyurethane elastic pavement body |
| JP3640009B2 (en) * | 1999-03-01 | 2005-04-20 | 株式会社渡辺組 | Forming method of wood pavement |
| JP2002266312A (en) * | 2001-03-06 | 2002-09-18 | Taisei Rotec Corp | Elastic paving method for low noise |
| JP2006219821A (en) * | 2005-02-08 | 2006-08-24 | Toray Ind Inc | Paving method |
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