JP6869769B2 - How to determine when to start rough finishing of concrete pavement - Google Patents
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- 244000007853 Sarothamnus scoparius Species 0.000 claims description 41
- 238000009736 wetting Methods 0.000 claims description 31
- 238000010276 construction Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000012795 verification Methods 0.000 description 12
- 238000013329 compounding Methods 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000004497 NIR spectroscopy Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
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本発明は、平坦仕上げ後のコンクリート舗装表面において、当該コンクリート舗装の表面に粗面仕上げを開始する時期の判定方法に関する。 The present invention relates to a method for determining when to start rough finishing on the surface of a concrete pavement after a flat finish.
従来より、コンクリート舗装の施工では、表面仕上げの工程において、荒仕上げおよび平坦仕上げの後、すべり抵抗性を確保するために粗面仕上げを行っている。粗面仕上げの方法としては、グルービング仕上げ、骨材露出仕上げの他、一般的には「ほうき目仕上げ」による方法が用いられており、要求されるすべり抵抗性を確保するためには、適切な時期にほうき目仕上げを行い、均一なきめ深さのほうき目仕上げを行う必要がある。 Conventionally, in the construction of concrete pavement, in the surface finishing process, after rough finishing and flat finishing, rough surface finishing is performed in order to secure slip resistance. As a rough surface finishing method, in addition to grooving finish and exposed aggregate finish, a method by "broom finish" is generally used, which is appropriate for ensuring the required slip resistance. It is necessary to finish the broom at the right time and finish the broom with a uniform depth.
上記「ほうき目仕上げ」は、コンクリート表面がフレッシュな状態で行う必要があるが、コンクリート表面が軟らか過ぎる状態でほうき目仕上げを行うと、均一な粗面（きめ深さ）を得ることができず、逆に、コンクリート表面が硬過ぎる状態でほうき目仕上げを行うと必要なきめ深さを得ることができないため、要求されるすべり抵抗性を確保することができない事態が発生し得る。したがって、コンクリート表面がフレッシュな状態で適切な時期に「ほうき目仕上げ」を行うことが非常に重要であり、要求されるすべり抵抗性を確保し、安全なコンクリート舗装を提供する上で、「ほうき目仕上げ」の開始時期の見極めは極めて重要である。 The above "broom finish" needs to be performed when the concrete surface is fresh, but if the broom finish is performed when the concrete surface is too soft, a uniform rough surface (texture depth) cannot be obtained. On the contrary, if the broom finish is performed when the concrete surface is too hard, the required texture depth cannot be obtained, so that the required slip resistance cannot be ensured. Therefore, it is very important to perform "broom finish" at the right time with the concrete surface fresh, and to ensure the required slip resistance and to provide safe concrete pavement, "broom". Determining when to start "finishing" is extremely important.
しかし、上記「ほうき目仕上げ」の適切な開始時期は、コンクリートの配合や、施工場所の環境条件等によって一定しないため、例えば、特許文献１の段落［００１４］や非特許文献１の第１３頁に示されているように、目視によりコンクリート表面の水光りが消えたタイミングでほうき目仕上げを開始するという定性的な判断にもとづいて、当該ほうき目仕上げが行われている状況にあり、このような従来の定性的な判断手法では、十分な現場経験をもつ現場技術者の判断に頼らざるを得ず、また、安定的で均一な品質の確保が難しいという問題があった。 However, the appropriate start time of the above-mentioned "broom finish" is not fixed depending on the composition of concrete, the environmental conditions of the construction site, and the like. Therefore, for example, paragraph [0014] of Patent Document 1 and page 13 of Non-Patent Document 1. As shown in, the broom finishing is performed based on the qualitative judgment that the broom finishing is started at the timing when the light on the concrete surface disappears visually. With the conventional qualitative judgment method, there is a problem that it is necessary to rely on the judgment of a field engineer who has sufficient field experience, and it is difficult to secure stable and uniform quality.
そこで、本発明は、コンクリート舗装表面において、当該コンクリート舗装の表面に粗面仕上げを開始する適切な時期を定量的に判定する方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a method for quantitatively determining an appropriate time for starting rough surface finishing on the surface of a concrete pavement on the surface of the concrete pavement.
（１）コンクリート舗装の粗面仕上げの開始時期を判定する方法であって、前記コンクリート舗装表面の表面濡れ率を測定し、当該表面濡れ率の測定結果に応じて、当該コンクリート舗装の粗面仕上げの開始時期を判定することを特徴とするコンクリート舗装の粗面仕上げ開始時期判定方法。 (1) A method for determining the start time of rough surface finishing of concrete pavement, in which the surface wetting rate of the concrete pavement surface is measured, and the rough surface finishing of the concrete pavement is performed according to the measurement result of the surface wetting rate. A method for determining the start time of rough surface finishing of concrete pavement, which comprises determining the start time of concrete pavement.
上記（１）の構成によれば、コンクリート舗装表面の表面濡れ率の測定結果に応じて、コンクリート舗装表面の粗面仕上げを開始することが可能となり、コンクリート舗装表面の水分状態を目視により定性的に判断して粗面仕上げを開始する従来の方法に比べ、現場技術者の経験に頼る必要がなく、さらに、安定的に粗面仕上げの品質を確保することが可能となる。 According to the configuration of (1) above, it is possible to start rough finishing of the concrete pavement surface according to the measurement result of the surface wettability of the concrete pavement surface, and the moisture state of the concrete pavement surface is visually qualitative. Compared with the conventional method of starting rough surface finishing by making a judgment, it is not necessary to rely on the experience of field engineers, and it is possible to stably secure the quality of rough surface finishing.
（２）前記表面濡れ率は、近赤外線を含む光の反射率によって測定する（１）に記載のコンクリート舗装の粗面仕上げ開始時期判定方法。 (2) The rough surface finishing start time determination method for concrete pavement according to (1), wherein the surface wetting rate is measured by the reflectance of light including near infrared rays.
上記（２）の構成によれば、近赤外線を含む光の反射率によって表面濡れ率を測定するため、コンクリート舗装表面を乱すことなく、短時間で表面濡れ率を測定することが可能となる。 According to the configuration of (2) above, since the surface wetting rate is measured by the reflectance of light including near infrared rays, the surface wetting rate can be measured in a short time without disturbing the concrete pavement surface.
（３）前記粗面仕上げは、ほうき目仕上げである（１）または（２）に記載のコンクリート舗装の粗面仕上げ開始時期判定方法。 (3) The rough surface finishing start time determination method for concrete pavement according to (1) or (2), wherein the rough surface finishing is a broom finish.
上記（３）の構成によれば、ほうき目仕上げを適切なタイミングで開始することができるため、ほうき目のきめ深さが均一となり、従来に比べてより高い品質を確保することが可能となる。 According to the configuration of (3) above, since the broom finish can be started at an appropriate timing, the texture depth of the broom becomes uniform, and it is possible to secure higher quality than before. ..
本発明は、前述の従来技術にも示したように、コンクリート舗装表面の水分状態が、ほうき目仕上げなどの粗面仕上げの開始時期を決定する上で重要であることから、当該コンクリート舗装表面の水分状態を近赤外線分光法により定量的に測定し、ほうき目仕上げなどの粗面仕上げの適切な開始時期を判定することを可能にするものである。以下、図面を参照しつつ、本発明の実施形態について説明する。 In the present invention, as shown in the above-mentioned prior art, the moisture state of the concrete pavement surface is important in determining the start time of rough surface finishing such as broom finishing, and therefore, the concrete pavement surface. It makes it possible to quantitatively measure the water content by near-infrared spectroscopy and determine an appropriate start time for rough surface finishing such as broom finishing. Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１には、本発明に係るコンクリート舗装の表面にほうき目仕上げなどの粗面仕上げを行うまでのフローが示されている。まず、コンクリートの敷き均しおよび締め固め（Ｓ１００）を行った後、コンクリート表面の平坦仕上げ（Ｓ１１０）を行う。なお、平坦仕上げ後のコンクリート表面は、ブリーディングの作用もあって水光りが生じている。その後、所定の測定間隔（必ずしも一定間隔である必要はなく、環境条件や目視による表面の水分状態などを考慮して適宜測定すればよい。）でコンクリート舗装表面の表面濡れ率の測定（Ｓ１２０）を行う。なお、本実施例では、後述する近赤外水分計を使用してコンクリート舗装表面の表面濡れ率の測定を行っている。そして、測定された表面濡れ率が、設定された所定の値に到達したか否かの判定（Ｓ１３０）を行い、当該表面濡れ率が所定の値に到達したことが確認されれば、ほうき目仕上げなどの粗面仕上げの適切な開始時期が到来したと判定して、コンクリート舗装の表面に対して粗面仕上げ作業を開始（Ｓ１４０）する。 FIG. 1 shows a flow until rough surface finishing such as broom finishing is performed on the surface of the concrete pavement according to the present invention. First, the concrete is leveled and compacted (S100), and then the concrete surface is flattened (S110). It should be noted that the concrete surface after the flat finish is bleeding to cause water shine. After that, the surface wetting rate of the concrete pavement surface is measured at a predetermined measurement interval (it is not always necessary to be a constant interval, and appropriate measurement may be performed in consideration of environmental conditions, visual moisture state of the surface, etc.) (S120). I do. In this embodiment, the surface wetting rate of the concrete pavement surface is measured by using a near-infrared moisture meter described later. Then, it is determined (S130) whether or not the measured surface wetting rate has reached the set predetermined value, and if it is confirmed that the surface wetting rate has reached the predetermined value, the broom stitch is used. It is determined that an appropriate start time for rough surface finishing such as finishing has arrived, and rough surface finishing work is started on the surface of the concrete pavement (S140).
（近赤外線分光法による水分状態の測定）
前述したように、本実施例では、近赤外線分光法によってコンクリート舗装表面の水分状態を測定するために、近赤外水分計を使用している。図２にはその一例として、近赤外水分計（ＫＪＴ−１３０、株式会社ケツト科学研究所社製）の外観が示されている。当該近赤外水分計は、小型軽量であるとともに、バッテリーを内臓した可搬型の装置であることから、特に、施工面積や施工延長の大きなコンクリート舗装表面の水分状態を測定するために好適に利用することができる。
(Measurement of moisture state by near infrared spectroscopy)
As described above, in this embodiment, a near-infrared moisture meter is used to measure the moisture state of the concrete pavement surface by near-infrared spectroscopy. As an example, FIG. 2 shows the appearance of a near-infrared moisture meter (KJT-130, manufactured by Kett Science Institute Headquarters). Since the near-infrared moisture meter is a portable device with a built-in battery as well as being compact and lightweight, it is particularly suitably used for measuring the moisture state of the concrete pavement surface having a large construction area and construction extension. can do.
また、上記近赤外水分計は、コンクリート舗装表面から１５ｃｍ前後離間させてコンクリート舗装表面の水分状態を水分率（％）として測定することが可能であり、さらに、測定時間も２秒と短時間の測定が可能であることから、コンクリート舗装表面を乱すことなく短時間でコンクリート舗装表面の水分状態を測定することが可能である。 Further, the near-infrared moisture meter can measure the moisture state of the concrete pavement surface as a moisture content (%) at a distance of about 15 cm from the concrete pavement surface, and the measurement time is as short as 2 seconds. It is possible to measure the moisture state of the concrete pavement surface in a short time without disturbing the concrete pavement surface.
なお、上記近赤外水分計は、近赤外を含む光を測定対象面となるコンクリート舗装表面に照射し、その反射率を測定することによってコンクリート舗装表面の水分状態を水分率（％）として測定している。すなわち、近赤外が可視光線よりも波長が長く、水分に対してよく吸収される性質をもっていることを利用し、上記反射率を測定することによって、コンクリート舗装表面の水分状態を測定している。なお、図３には、近赤外水分計１をコンクリート舗装１０のコンクリート舗装表面３の上方に配置し、水分２が存在するコンクリート舗装表面３に向けて近赤外を含む光を照射してコンクリート舗装表面３の水分状態を測定するイメージ図が示されている。
The near-infrared moisture meter irradiates the surface of the concrete pavement to be measured with light containing near-infrared light, and measures the reflectance to set the moisture state of the surface of the concrete pavement as the moisture content (%). I'm measuring. That is, the moisture state of the concrete pavement surface is measured by measuring the reflectance by utilizing the fact that near infrared has a longer wavelength than visible light and is well absorbed by moisture. .. In FIG. 3, the near-infrared moisture meter 1 is arranged above the
また、上記近赤外水分計は、測定対象面の表面の数百μｍ（１ｍｍ以下）の水分率（％）を測定するものである。換言すれば、測定結果として得られる水分率（％）はコンクリート舗装表面の見かけ上の濡れ状態を示すものである。したがって本発明では、上記近赤外水分計により測定される水分率（％）を「表面濡れ率（％）」として測定し、当該表面濡れ率（％）の測定結果にもとづいて、ほうき目仕上げなどの粗面仕上げの開始時期を判定している。 Further, the near-infrared moisture meter measures the moisture content (%) of several hundred μm (1 mm or less) on the surface of the surface to be measured. In other words, the moisture content (%) obtained as a measurement result indicates the apparent wet state of the concrete pavement surface. Therefore, in the present invention, the moisture content (%) measured by the near-infrared moisture meter is measured as "surface wettability (%)", and broom finishing is performed based on the measurement result of the surface wettability (%). The start time of rough surface finishing such as is determined.
（従来の経験則にもとづくほうき目仕上げの実地検証）
本発明の検証過程では、従来の経験則にもとづく方法によってコンクリート舗装表面にほうき目仕上げを開始した場合の、ほうき目のきめ深さ（ＭＰＤ）およびすべり摩擦計数（μ６０）の測定を実地検証により行った。きめ深さ（ＭＰＤ）はＣＴメータによる平均プロファイル深さ（ＭＰＤ：Ｍｅａｎ Ｐｒｏｆｉｌｅ Ｄｅｐｔｈ）を測定し、すべり摩擦係数（μ６０）はＤＦテスタにより測定を行った。当該実地検証は、図４の（ａ）に示された配合条件および施工条件によって行い、任意の４つの測定箇所において、ほうき目のきめ深さ（ＭＰＤ）およびすべり摩擦係数（μ６０）の測定を行った。
(Practical verification of broom finish based on conventional rules of thumb)
In the verification process of the present invention, the measurement of the broom grain depth (MPD) and the slip friction count (μ60) when the broom finish is started on the concrete pavement surface by a method based on a conventional rule of thumb is measured by field verification. went. The texture depth (MPD) was measured by measuring the average profile depth (MPD: Mean Profile Depth) with a CT meter, and the slip friction coefficient (μ60) was measured by a DF tester. The on-the-spot verification was carried out under the compounding conditions and construction conditions shown in FIG. 4 (a), and the broom texture depth (MPD) and the sliding friction coefficient (μ60) were measured at any four measurement points. went.
図４の（ｂ）には、上記実地検証で得られたほうき目のきめ深さ（ＭＰＤ）とすべり摩擦係数（μ６０）の測定結果が示されているが、ほうき目のきめ深さ（ＭＰＤ）が一番小さな測定箇所（測点４）でもすべり摩擦係数（μ６０）は０．５２であり、一般的にすべり摩擦係数（μ６０）が０．４以上であれば特に品質上問題ないことを考慮すると、何れの測定箇所においても、一応は粗面に仕上がっていると言える。しかしながら、各測定箇所のほうき目のきめ深さ（ＭＰＤ）の実測範囲は、０．４４〜０．８４ｍｍと、ばらつきが認められる。したがって、現場技術者の目視による定性的な判断手法では、均一なほうき目のきめ深さ（ＭＰＤ）を得ることが難しく、すべり摩擦係数（μ６０）など、安定した品質を確保することが難しいと言える。 FIG. 4B shows the measurement results of the broom grain depth (MPD) and the slip friction coefficient (μ60) obtained in the above-mentioned field verification. ) Is the smallest measurement point (measurement point 4), the slip friction coefficient (μ60) is 0.52. Generally, if the slip friction coefficient (μ60) is 0.4 or more, there is no particular quality problem. Considering this, it can be said that the surface is rough at any of the measurement points. However, the actual measurement range of the broom depth (MPD) of each measurement point is 0.44 to 0.84 mm, and variations are observed. Therefore, it is difficult to obtain a uniform broom grain depth (MPD) by a qualitative judgment method visually by a field engineer, and it is difficult to secure stable quality such as a slip friction coefficient (μ60). I can say.
（表面濡れ率とほうき目仕上げの実地検証）
本発明の検証過程では、ほうき目仕上げ開始時のコンクリート舗装表面の表面濡れ率と、ほうき目のきめ深さ（ＭＰＤ）との関係について実地検証を行った。本実地検証では、図５に示されているように、４つの配合条件および施工条件のもと、コンクリート舗装の側端部から３０〜５０ｃｍの位置において、１０分間隔で近赤外水分計によるコンクリート舗装表面の表面濡れ率の測定を行いつつ、目視によって舗装表面の水光りが落ち着いた時点でほうき目仕上げを開始するとともに、その時点の表面濡れ率を記録した。そして翌日、表面濡れ率を測定した箇所のほうき目のきめ深さ（ＭＰＤ）を測定した。
(Practical verification of surface wetting rate and broom finish)
In the verification process of the present invention, the relationship between the surface wetting rate of the concrete pavement surface at the start of broom finishing and the texture depth (MPD) of the broom was verified on-site. In this field verification, as shown in FIG. 5, under four compounding conditions and construction conditions, a near-infrared moisture meter was used at 10-minute intervals at a position 30 to 50 cm from the side edge of the concrete pavement. While measuring the surface wetting rate of the concrete pavement surface, broom finishing was started when the water light on the pavement surface had settled down visually, and the surface wetting rate at that time was recorded. Then, the next day, the texture depth (MPD) of the broom at the place where the surface wetting rate was measured was measured.
なお、図５には４つの配合条件および施工条件（ケース１〜４）が示されているが、施工法や施工環境、セメントの種類、水セメント比などが、表面ぬれ率やほうき目のきめ深さ（ＭＰＤ）にどのような影響を及ぼすのかを確認するものである。特に、施工環境が明かり部である場合と、トンネル部である場合とでは、日照や気温、湿度、風等の環境条件が大きく異なることを考慮し、当該環境条件による影響を確認することを目的に実地検証を行った。 In addition, although four compounding conditions and construction conditions (cases 1 to 4) are shown in FIG. 5, the construction method, construction environment, cement type, water-cement ratio, etc. are determined by the surface wetting rate and the texture of the broom. This is to confirm how it affects the depth (MPD). In particular, the purpose is to confirm the influence of the environmental conditions, considering that the environmental conditions such as sunshine, temperature, humidity, and wind differ greatly between the case where the construction environment is a light part and the case where the construction environment is a tunnel part. On-site verification was conducted.
図６には、上記４つの配合条件および施工条件（ケース１〜４）における、各測定箇所でのほうき目仕上げ開始時の表面濡れ率と、ほうき目のきめ深さ（ＭＰＤ）が示されている。（なお、配合条件および施工条件（ケース１〜４）ごとに５箇所の測点を設け、各測点の最大値から最小値が示されている。）その結果、上記４つの配合条件および施工条件（ケース１〜４）による特段の差異は認められなかった。 FIG. 6 shows the surface wetting rate at the start of broom finishing at each measurement point and the texture depth (MPD) of the broom under the above four compounding conditions and construction conditions (cases 1 to 4). There is. (It should be noted that five measuring points are provided for each compounding condition and construction condition (cases 1 to 4), and the minimum value is shown from the maximum value of each measuring point.) As a result, the above four compounding conditions and construction are performed. No particular difference was observed depending on the conditions (cases 1 to 4).
また、上記実地検証の結果から、上記４つの配合条件および施工条件（ケース１〜４）における、ほうき目仕上げ開始時の表面濡れ率は１８．８〜２４．５％の範囲であり、当該表面濡れ率の範囲内で行われたほうき目仕上げのきめ深さ（ＭＰＤ）は０．４８〜０．６８ｍｍの範囲で均一なきめ深さ（ＭＰＤ）が得られ、平均０．５９ｍｍと、良好な品質が確保されていた。 In addition, from the results of the above-mentioned field verification, the surface wetting rate at the start of broom finishing under the above four compounding conditions and construction conditions (cases 1 to 4) is in the range of 18.8 to 24.5%, and the surface is concerned. The texture depth (MPD) of the broom finish performed within the range of the wetting rate was in the range of 0.48 to 0.68 mm, and a uniform texture depth (MPD) was obtained, which was good with an average of 0.59 mm. The quality was ensured.
したがって、本発明の、表面濡れ率にもとづくコンクリート舗装の粗面処理の開始判定方法により、コンクリート舗装の配合や環境条件等の影響を受けることなく、粗面処理の適切な開始時期を定量的に判定することが可能となる。 Therefore, according to the method of the present invention for determining the start of rough surface treatment of concrete pavement based on the surface wetting rate, the appropriate start time of rough surface treatment can be quantitatively determined without being affected by the composition of concrete pavement, environmental conditions, and the like. It becomes possible to judge.
（表面濡れ率のキャリブレーション）
本発明の、舗装表面の表面濡れ率にもとづくコンクリート舗装の粗面仕上げの開始時期を判定する方法では、粗面仕上げを開始するための基準となる表面濡れ率を設定することが必要であり、表面濡れ率のキャリブレーションを行うことで適切な粗面仕上げの開始時期を判定することが可能となる。
(Calibration of surface wetting rate)
In the method of the present invention for determining the start time of rough surface finishing of concrete pavement based on the surface wetting rate of the pavement surface, it is necessary to set the surface wetting rate as a reference for starting the rough surface finishing. By calibrating the surface wetting rate, it is possible to determine an appropriate start time for rough surface finishing.
例えば、施工初日に、コンクリート舗装表面の平坦仕上げ後の複数の固定された測点において、５〜１０分間隔で表面濡れ率を測定し、目視によって表面の水光りが落ち着いた段階で、粗面仕上げを開始するとともにその時点の表面濡れ率を測定・記録する。そして翌日、粗面仕上げのきめ深さ（ＭＰＤ）を測定し、所定の品質基準を満たすきめ深さ（ＭＰＤ）が得られた場合には、粗面仕上げを開始した時点の表面濡れ率を、粗面仕上げ開始の判定値として設定することができる。これにより、翌日以降は、測定された表面濡れ率が判定値となったタイミングで粗面仕上げを開始すればよい。 For example, on the first day of construction, the surface wetting rate is measured at intervals of 5 to 10 minutes at a plurality of fixed stations after the flat finish of the concrete pavement surface, and when the water light on the surface has settled down visually, the rough surface Start finishing and measure and record the surface wetting rate at that time. Then, the next day, the texture depth (MPD) of the rough surface finish is measured, and when the texture depth (MPD) satisfying a predetermined quality standard is obtained, the surface wetting rate at the time when the rough surface finish is started is determined. It can be set as a judgment value for starting rough surface finishing. As a result, from the next day onward, rough surface finishing may be started at the timing when the measured surface wetting rate becomes a determination value.
以上、本発明の実施形態について図面に基づいて説明したが、具体的な構成は、これらの実施形態に限定されるものではない。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications within the meaning and scope equivalent to the scope of claims.
上記実施形態では、スリップフォームペーバを使用した実施例等について述べたが、本発明はこれに限定されるものではなく、他の工法によるコンクリート舗装の粗面仕上げに適用することも可能であり、道路に限らず、競技場施設、公園施設、空港施設、港湾施設、駐車場施設、工場施設、商業施設など、様々な施設のコンクリート表面の粗面仕上げ開始判定に適用できる。 In the above embodiment, examples and the like using the slip foam paver have been described, but the present invention is not limited to this, and can be applied to rough surface finishing of concrete pavement by other construction methods. , Not limited to roads, can be applied to determine the start of rough finishing of concrete surfaces in various facilities such as stadium facilities, park facilities, airport facilities, port facilities, parking facilities, factory facilities, and commercial facilities.
３ コンクリート舗装表面
１０ コンクリート舗装
3
Claims (3)
コンクリート舗装の平坦仕上げ後、目視によって表面の水光りが落ち着いた段階で近赤外線を含む光の反射率によって該コンクリート舗装の表面の表面濡れ率を測定するとともに粗面仕上げを行い、
前記コンクリート舗装の施工翌日に前記粗面仕上げのきめ深さを測定し、
前記きめ深さの測定結果が所定の品質基準を満たす場合に、前記表面濡れ率を翌日以降に施工するコンクリート舗装の粗面仕上げの判定値とし、
前記翌日以降に施工するコンクリート舗装の粗面仕上げを前記判定値に基づいて開始する
ことを特徴とするコンクリート舗装の粗面仕上げ開始時期判定方法。 A method of determining when to start rough finishing of concrete pavement.
After the flat finish of the concrete pavement, the surface wettability of the surface of the concrete pavement is measured by the reflectance of light including near infrared rays and the rough surface is finished when the water light on the surface has settled down visually.
The day after the construction of the concrete pavement, the texture depth of the rough surface finish was measured.
When the measurement result of the texture depth meets the predetermined quality standard, the surface wetting rate is set as the judgment value of the rough surface finish of the concrete pavement to be constructed on the next day or later.
A method for determining the start time of rough surface finishing of concrete pavement, which comprises starting the rough surface finishing of concrete pavement to be constructed on or after the next day based on the determination value.
請求項１に記載のコンクリート舗装の粗面仕上げ開始時期判定方法。 The rough surface finishing start time determination method for concrete pavement according to claim 1 , wherein the rough surface finishing is a broom finish.
請求項１または２に記載のコンクリート舗装の粗面仕上げ開始時期判定方法。
The rough surface finishing start time determination method for concrete pavement according to claim 1 or 2, wherein the surface wettability, which is a determination value for rough surface finishing, is in the range of 18.8 to 24.5%.
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