JP6646777B1 - Cement-based porous pavement material - Google Patents
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- 239000004568 cement Substances 0.000 title claims abstract description 139
- 239000000463 material Substances 0.000 title claims abstract description 37
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- 239000000839 emulsion Substances 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 17
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- 238000002156 mixing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
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- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 230000035699 permeability Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 abstract 1
- 239000012254 powdered material Substances 0.000 abstract 1
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- 239000003638 chemical reducing agent Substances 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
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- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
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- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- 239000008186 active pharmaceutical agent Substances 0.000 description 1
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- 239000011400 blast furnace cement Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
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Landscapes
- Road Paving Structures (AREA)
- Road Repair (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
【課題】交通の早期開放が可能であり、透水性、耐流動性、耐骨材飛散性、付着性及び施工性に優れたセメント系ポーラス舗装用組成物を提供する。【解決手段】セメント、粒度が２．５ｍｍ以下である骨材の割合が８０質量％以上である骨材Ａ、粒度が３〜７ｍｍである骨材の割合が８０質量％以上である骨材Ｂ、及びセメント混和用ポリマーエマルションを構成材料として含むセメント系ポーラス舗装用組成物であって、セメント混和用ポリマーエマルションに含まれるポリマーとセメントの質量比（ポリマー／セメント）が、０．１２〜０．８０であるセメント系ポーラス舗装用組成物。該セメント系ポーラス舗装用組成物を調製するためのセメント系ポーラス舗装用資材であって、該資材が、上記骨材Ｂと、上記ポリマーエマルションと、上記ポリマーエマルションと上記骨材Ｂ以外の上記構成材料を含む粉粒状物の組み合わせからなるセメント系ポーラス舗装用資材。【選択図】なしAn object of the present invention is to provide a cement-based porous pavement composition capable of early opening of traffic, and having excellent water permeability, flow resistance, aggregate scattering resistance, adhesion and workability. SOLUTION: Cement, aggregate A having a ratio of aggregate having a particle size of 2.5 mm or less of 80% by mass or more, and aggregate B having a ratio of aggregate having a particle size of 3 to 7mm of 80% by mass or more are provided. And a cement-based porous pavement composition containing, as a constituent material, a polymer emulsion for cement admixture, wherein the mass ratio (polymer / cement) of the polymer and cement contained in the polymer emulsion for cement admixture is 0.12 to 0. 80. A cement-based porous pavement composition which is 80. A cement-based porous pavement material for preparing the cement-based porous pavement composition, wherein the material includes the aggregate B, the polymer emulsion, the polymer emulsion, and the aggregate except for the aggregate B. A cement-based porous pavement material composed of a combination of powdered and granular materials containing materials. [Selection diagram] None
Description
本発明は、セメント系ポーラス舗装用組成物に関する。 The present invention relates to a cement-based porous pavement composition.
雨天時の水はね及びハイドロプレーニング現象の抑制や、騒音の低減等を目的として、高い空隙率を有するアスファルト系ポーラス構造の舗装が、高速道路等の表層舗装に用いられている。
一方、道路の路面に生じたポットホール、轍等の凹部に打設して補修するための材料として、特許文献１には、結晶質カルシウムアルミネートと非晶質カルシウムアルミネートからなるカルシウムアルミネート６５質量％以上と残部間隙物質からなるクリンカ粉末１２〜３５質量部、普通ポルトランドセメント１００質量部、石膏類を該クリンカ粉末含有質量の０．５〜２倍相当量及びセメント用ポリマー９〜３０質量部を含有する補修用ポリマーセメント系組成物が記載されている。
また、特許文献２には、セメント混和用ポリマーエマルション、セメント、及び細骨材を含み、上記細骨材の全量中の０．６ｍｍ以下の粒度を有する細骨材の割合が１０〜１００質量％であり、上記セメント混和用ポリマーエマルション１００質量部当たりの上記セメントの量が３０〜１３０質量部であることを特徴とする舗装路面形成用組成物が記載されている。
BACKGROUND ART Asphalt-based porous pavements having a high porosity have been used for surface pavements such as highways for the purpose of suppressing splashing and hydroplaning phenomena in rainy weather and reducing noise.
On the other hand, Patent Document 1 discloses a calcium aluminate composed of crystalline calcium aluminate and amorphous calcium aluminate as a material for driving and repairing a concave portion such as a pothole or a rut formed on a road surface. 12 to 35 parts by mass of clinker powder consisting of 65% by mass or more and the remaining interstitial material, 100 parts by mass of ordinary Portland cement, gypsum equivalent to 0.5 to 2 times the mass of the clinker powder and 9 to 30 parts by mass of cement polymer A repair polymer cementitious composition containing parts is described.
Patent Document 2 discloses that the proportion of the fine aggregate having a particle size of 0.6 mm or less in the total amount of the fine aggregate includes a polymer emulsion for cement admixture, cement, and fine aggregate, and is 10 to 100% by mass. Wherein the amount of the cement is 30 to 130 parts by mass per 100 parts by mass of the polymer emulsion for cement admixture, wherein the composition for forming a pavement road surface is described.
アスファルト系ポーラス舗装は、車両の荷重によって、舗装表面の骨材飛散やポットホールの発生等の劣化が問題となっており、劣化の初期段階において、劣化箇所の補修を行うことが求められている。
本発明の目的は、交通の早期開放が可能であり、透水性、耐流動性、耐骨材飛散性、付着性及び施工性に優れたセメント系ポーラス舗装用組成物を提供することである。
Asphalt-based porous pavement has a problem of deterioration such as scattering of aggregates and occurrence of potholes on the pavement surface due to a load of a vehicle, and it is required to repair a deteriorated portion in an initial stage of deterioration. .
An object of the present invention is to provide a cement-based porous pavement composition that allows early opening of traffic and is excellent in water permeability, flow resistance, aggregate scattering resistance, adhesion and workability.
本発明者は、上記課題を解決するために鋭意検討した結果、セメントと、特定の骨材Ａ及び骨材Ｂと、ポリマーエマルションを含み、ポリマーとセメントの質量比（ポリマー／セメント）が特定の数値範囲内であるセメント系ポーラス舗装用組成物によれば、上記目的を達成できることを見出し、本発明を完成した。
すなわち、本発明は、以下の［１］〜［７］を提供するものである。
［１］ セメント、粒度が２．５ｍｍ以下である骨材の割合が８０質量％以上である骨材Ａ、粒度が３〜７ｍｍである骨材の割合が８０質量％以上である骨材Ｂ、及びセメント混和用ポリマーエマルションを構成材料として含むセメント系ポーラス舗装用組成物であって、上記ポリマーエマルションに含まれるポリマーと上記セメントの質量比（ポリマー／セメント）が、０．１２〜０．８０であることを特徴とするセメント系ポーラス舗装用組成物。
［２］ 上記セメントが超速硬セメントである前記［１］に記載のセメント系ポーラス舗装用組成物。
［３］ 上記骨材Ａが珪砂である前記［１］または［２］に記載のセメント系ポーラス舗装用組成物。
［４］ 上記セメント１００質量部に対して、上記骨材Ａの配合量が２０〜６０質量部であり、上記骨材Ｂの配合量が３００〜１，０００質量部であり、上記ポリマーエマルションの配合量が２５〜１６０質量部である前記［１］〜［３］のいずれかに記載のセメント系ポーラス舗装用組成物。
［５］ 上記組成物が構成材料として無機粉末（ただし、セメントを除く）を含み、上記セメント１００質量部に対する、上記無機粉末の配合量が１００質量部以下である前記［１］〜［４］のいずれか１に記載のセメント系ポーラス舗装用組成物。
The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems, and as a result, it has been found that cement, specific aggregates A and B, a polymer emulsion, and a polymer-cement mass ratio (polymer / cement) are specified. According to the cement-based porous pavement composition within the numerical range, it has been found that the above object can be achieved, and the present invention has been completed.
That is, the present invention provides the following [1] to [7].
[1] Cement, aggregate A in which the ratio of aggregate having a particle size of 2.5 mm or less is 80% by mass or more, aggregate B in which the ratio of aggregate having a particle size of 3 to 7 mm is 80% by mass or more, And a cement-based porous pavement composition comprising, as a constituent material, a polymer emulsion for cement admixture, wherein the mass ratio (polymer / cement) of the polymer and the cement contained in the polymer emulsion is 0.12 to 0.80. A cement-based porous pavement composition, comprising:
[2] The cement-based porous pavement composition according to the above [1], wherein the cement is a super-hard cement.
[3] The cement-based porous pavement composition according to [1] or [2], wherein the aggregate A is quartz sand.
[4] The compounding amount of the aggregate A is 20 to 60 parts by mass, and the compounding amount of the aggregate B is 300 to 1,000 parts by mass with respect to 100 parts by mass of the cement. The cement-based porous pavement composition according to any one of the above [1] to [3], wherein the compounding amount is 25 to 160 parts by mass.
[5] The above-mentioned [1] to [4], wherein the composition contains an inorganic powder (excluding cement) as a constituent material, and the compounding amount of the inorganic powder is 100 parts by mass or less with respect to 100 parts by mass of the cement. The cement-based porous pavement composition according to any one of the above.
［６］ 前記［１］〜［５］のいずれかに記載のセメント系ポーラス舗装用組成物を調製するためのセメント系ポーラス舗装用資材であって、該資材が、上記骨材Ｂと、上記ポリマーエマルションと、上記ポリマーエマルションと上記骨材Ｂ以外の上記構成材料を含む粉粒状物の組み合わせからなることを特徴とするセメント系ポーラス舗装用資材。
［７］ 前記［６］に記載のセメント系ポーラス舗装用資材を用いたセメント系ポーラス舗装の補修方法であって、上記粉粒状物と、上記骨材Ｂを混合して、粉粒状混合物を得る粉粒状混合物調製工程と、上記粉粒状混合物と、上記ポリマーエマルションを混合して、上記セメント系ポーラス舗装用組成物を調製する組成物調製工程と、上記セメント系ポーラス舗装用組成物を、セメント系ポーラス舗装の補修を必要とする部分に充填する充填工程を含むことを特徴とするセメント系ポーラス舗装の補修方法。
[6] A cement-based porous pavement material for preparing the cement-based porous pavement composition according to any one of [1] to [5], wherein the material is the above-described aggregate B and the above-mentioned aggregate B. A cement-based porous pavement material comprising a polymer emulsion, and a combination of the polymer emulsion and a powdery material containing the constituent material other than the aggregate B.
[7] A method for repairing a cement-based porous pavement using the cement-based porous pavement material according to the above [6], wherein the granular material and the aggregate B are mixed to obtain a granular mixture. A powder-granular mixture preparation step, a composition preparation step of mixing the polymer-emulsion and the polymer emulsion to prepare the cement-based porous pavement composition, and a cement-based porous pavement composition, A method for repairing a cement-based porous pavement, comprising a filling step of filling a portion of the porous pavement requiring repair.
本発明のセメント系ポーラス舗装用組成物は、早期に強度を発現するため、舗装表面の劣化の補修等を行った後、交通の早期開放が可能である。
また、本発明のセメント系ポーラス舗装用組成物を硬化してなる硬化体は、透水性に優れたポーラス構造を有し、かつ、耐流動性、耐骨材飛散性に優れている。
なお、本明細書中、「耐流動性」とは、施工後、車両の荷重による硬化体の局部流動が起こりにくい（轍等が発生しにくい）ことをいう。
さらに、本発明のセメント系ポーラス舗装用組成物は、付着性に優れるため、施工後、下地からの剥離が生じにくいことから、施工前に下地にプライマーを塗布する等の前処理を行わなくてもよい。また、該組成物の使用量が少量の場合には、ミキサーを使用せずに混練を行うことができ、また、コテ仕上げ後に、圧密や加圧の作業を行わなくてもよいことから、容易にかつ迅速に施工することができる。
Since the cement-based porous pavement composition of the present invention develops strength at an early stage, it is possible to open the traffic early after repairing the deterioration of the pavement surface or the like.
Further, the cured product obtained by curing the cement-based porous pavement composition of the present invention has a porous structure having excellent water permeability, and is excellent in flow resistance and aggregate scattering resistance.
In addition, in this specification, "flow resistance" means that, after construction, local flow of a hardened body due to a load of a vehicle hardly occurs (a rut or the like hardly occurs).
Furthermore, the cement-based porous pavement composition of the present invention is excellent in adhesion, and is hardly peeled off from the foundation after the application, without performing a pretreatment such as applying a primer to the foundation before the application. Is also good. In addition, when the amount of the composition used is small, kneading can be performed without using a mixer. Construction can be carried out quickly.
本発明のセメント系ポーラス舗装用組成物は、セメント、粒度が２．５ｍｍ以下である骨材の割合が８０質量％以上である骨材Ａ、粒度が３〜７ｍｍである骨材の割合が８０質量％以上である骨材Ｂ、及びセメント混和用ポリマーエマルションを構成材料として含むセメント系ポーラス舗装用組成物であって、ポリマーエマルションに含まれるポリマーとセメントの質量比（ポリマー／セメント）が、０．１２〜０．８０であるものである。
本発明で用いられるセメントとしては、特に限定されるものではないが、例えば、超速硬セメントや、超早強ポルトランドセメント、早強ポルトランドセメント、普通ポルトランドセメント、中庸熱ポルトランドセメント、低熱ポルトランドセメント等の各種ポルトランドセメントや、高炉セメント、フライアッシュセメント、シリカセメント等の混合セメントや、エコセメント等が挙げられる。
これらは、１種を単独で用いてもよく、２種以上を組み合わせて用いてもよい。
中でも、早期の交通開放の観点から、超速硬セメント、超早強ポルトランドセメント、及び早強ポルトランドセメントが好ましく、超速硬セメント及び超早強ポルトランドセメントがより好ましく、超速硬セメントが特に好ましい。
The cement-based porous pavement composition of the present invention has a cement, an aggregate A having a ratio of aggregates having a particle size of 2.5 mm or less of 80% by mass or more, and an aggregate having a particle size of 3 to 7 mm of 80% by mass. A cement-based porous pavement composition comprising as a constituent material an aggregate B of not less than mass% and a polymer emulsion for cement admixture, wherein the mass ratio of polymer to cement (polymer / cement) contained in the polymer emulsion is 0. .12 to 0.80.
Examples of the cement used in the present invention include, but are not particularly limited to, ultra-rapid hardening cement, ultra-high-strength Portland cement, early-strength Portland cement, ordinary Portland cement, moderate heat Portland cement, low heat Portland cement, and the like. Various portland cements, mixed cements such as blast furnace cement, fly ash cement, silica cement, etc., and eco-cements are exemplified.
These may be used alone or in combination of two or more.
Among them, from the viewpoint of early traffic opening, ultra-rapid hardening cement, ultra-high-strength Portland cement, and early-strength Portland cement are preferable, ultra-high-hardening cement and ultra-high-strength Portland cement are more preferable, and ultra-rapid hardening cement is particularly preferable.
本発明で用いられる骨材Ａは、仕上げ性状、強度発現性及び耐摩耗性の観点から、粒度が２．５ｍｍ以下である骨材の割合が８０質量％以上（好ましくは９０質量％以上）であるものである。
なお、本明細書中、「粒度」とは、ふるいの目開き寸法に対応する大きさを意味する。
骨材Ａの例としては、珪砂、川砂、山砂、陸砂、海砂、砕砂、スラグ細骨材、及び軽量細骨材、またはこれらの混合物等が挙げられる。中でも、入手の容易性、仕上げ性状、強度発現性、及び耐摩耗性等の観点から、珪砂が好ましい。
セメント１００質量部に対する骨材Ａの配合量は、強度発現性等の観点から、好ましくは２０〜６０質量部、より好ましくは３０〜５５質量部、特に好ましくは４０〜５０質量部である。
Aggregate A used in the present invention has an 80% by mass or more (preferably 90% by mass or more) ratio of the aggregate having a particle size of 2.5 mm or less from the viewpoint of finish properties, strength development, and wear resistance. There is something.
In addition, in this specification, "granularity" means a size corresponding to the sieve opening size.
Examples of the aggregate A include quartz sand, river sand, mountain sand, land sand, sea sand, crushed sand, slag fine aggregate, lightweight fine aggregate, a mixture thereof, and the like. Above all, silica sand is preferred from the viewpoints of availability, finish properties, strength development, abrasion resistance and the like.
The mixing amount of the aggregate A with respect to 100 parts by mass of the cement is preferably 20 to 60 parts by mass, more preferably 30 to 55 parts by mass, and particularly preferably 40 to 50 parts by mass from the viewpoint of strength development and the like.
本発明で用いられる骨材Ｂは、仕上げ性状、強度発現性及び透水性等の観点から粒度が３〜７ｍｍ（好ましくは４〜７ｍｍ、より好ましくは５〜７ｍｍ）である骨材の割合が８０質量％以上（好ましくは８５質量％以上、より好ましくは９０質量％以上）であるものである。
骨材Ｂの例としては、砕石、川砂利、山砂利、海砂利、またはこれらの２種以上の混合物等が挙げられる。
セメント１００質量部に対する骨材Ｂの配合量は、仕上げ性状、強度発現性等の観点から、好ましくは３００〜１，０００質量部、より好ましくは４００〜９００質量部、さらに好ましくは５００〜８００質量部、特に好ましくは５５０〜７５０質量部である。
In the aggregate B used in the present invention, the ratio of the aggregate having a particle size of 3 to 7 mm (preferably 4 to 7 mm, more preferably 5 to 7 mm) is 80 from the viewpoint of finish properties, strength development, water permeability, and the like. % By mass (preferably at least 85% by mass, more preferably at least 90% by mass).
Examples of the aggregate B include crushed stone, river gravel, mountain gravel, sea gravel, or a mixture of two or more of these.
The blending amount of the aggregate B with respect to 100 parts by mass of the cement is preferably from 300 to 1,000 parts by mass, more preferably from 400 to 900 parts by mass, and still more preferably from 500 to 800 parts by mass from the viewpoints of finish properties, strength development and the like. Parts, particularly preferably 550 to 750 parts by mass.
本発明で用いられるセメント混和用ポリマーエマルションは、セメント混和用ポリマーを含むエマルション（ディスパージョンを含む）であれば、特に限定されるものではない。
セメント混和用ポリマーとしては、例えば、天然ゴム；クロロプレンゴム、スチレン・ブタジエン系ゴム、アクリルニトリル・ブタジエン系ゴム、メチルメタアクリレート・ブタジエン系ゴム、ブタジエン系ゴム等の合成ゴム；アクリル系ポリマー、アクリル・スチレン系ポリマー、アクリル・ポリビニルアルコール系ポリマー、ポリ酢酸ビニル、ポリエチレン、ポリプロピレン、エチレン・酢酸ビニル共重合体、エチレン・酢酸ビニル・塩化ビニル共重合体、酢酸ビニル・ビニルバーサテート共重合体、ポリビニルアルコール、フルフリルアルコール、不飽和ポリエステル、及びエポキシ等の合成樹脂；アスファルト、ゴムアスファルト、及びパラフィン等の歴青質；セルロース誘導体等の天然高分子誘導体；ポリアクリル酸塩等の水溶性ポリマー等が挙げられる。
これらは、１種単独で、あるいは２種以上を組み合わせて使用することができる。
中でも、入手の容易性および経済性の観点から、アクリル系ポリマー、アクリル・スチレン系ポリマーが好ましく、強度発現性及び付着性の観点から、アクリル系ポリマーがより好ましい。
The polymer emulsion for cement admixture used in the present invention is not particularly limited as long as it is an emulsion containing a polymer for cement admixture (including a dispersion).
Examples of the polymer for cement admixture include natural rubber; synthetic rubber such as chloroprene rubber, styrene / butadiene rubber, acrylonitrile / butadiene rubber, methyl methacrylate / butadiene rubber, butadiene rubber; acrylic polymer; Styrene polymer, acrylic / polyvinyl alcohol polymer, polyvinyl acetate, polyethylene, polypropylene, ethylene / vinyl acetate copolymer, ethylene / vinyl acetate / vinyl chloride copolymer, vinyl acetate / vinyl versatate copolymer, polyvinyl alcohol And synthetic resins such as furfuryl alcohol, unsaturated polyester and epoxy; bituminous substances such as asphalt, rubber asphalt and paraffin; natural polymer derivatives such as cellulose derivatives; water-soluble such as polyacrylates Rimmer, and the like.
These can be used alone or in combination of two or more.
Among them, an acrylic polymer and an acrylic / styrene-based polymer are preferable from the viewpoint of availability and economy, and an acrylic polymer is more preferable from the viewpoint of strength development and adhesion.
ここで、アクリル系ポリマー（ポリアクリル酸エステル系ポリマー）とは、（メタ）アクリル酸エステル（例えば、（メタ）アクリル酸メチル）の単独重合体、または、主成分である（メタ）アクリル酸エステルと、必要に応じて用いられる他の共重合可能なモノマー（例えば、ブタジエン：ただし、スチレン系モノマー、及びビニルアルコール系モノマーを除く。）を共重合させた共重合体をいう。
ここで、「主成分」とは、ポリマーを構成する全モノマー中、（メタ）アクリル酸エステルを５０質量％以上の含有率で含むことをいう。
Here, the acrylic polymer (polyacrylate polymer) is a homopolymer of (meth) acrylate (for example, methyl (meth) acrylate) or (meth) acrylate which is a main component. And other copolymerizable monomers (for example, butadiene: excluding styrene-based monomers and vinyl alcohol-based monomers) used as needed.
Here, the “main component” means that (meth) acrylic acid ester is contained at a content of 50% by mass or more in all monomers constituting the polymer.
アクリル・スチレン系ポリマーとは、主成分である（メタ）アクリル酸エステル（例えば、（メタ）アクリル酸メチル）と、スチレン系モノマー（例えば、スチレン）と、必要に応じて用いられる他の共重合可能なモノマー（例えば、ブタジエン）を共重合させた共重合体をいう。
アクリル・スチレン系ポリマーを構成する全モノマー中のスチレン系モノマーの割合は、通常、５０質量％未満、好ましくは３０質量％以下である。
The acrylic / styrene-based polymer is a main component of (meth) acrylate (for example, methyl (meth) acrylate), a styrene-based monomer (for example, styrene), and other copolymers used as needed. A copolymer obtained by copolymerizing possible monomers (for example, butadiene).
The proportion of the styrene-based monomer in all the monomers constituting the acrylic / styrene-based polymer is usually less than 50% by mass, preferably 30% by mass or less.
本発明のセメント系ポーラス舗装用組成物において、セメント混和用ポリマーエマルションに含まれるポリマーとセメントの質量比（ポリマー／セメント）は、０．１２〜０．８０、好ましくは０．２０〜０．７０、より好ましくは０．３０〜０．６０、特に好ましくは０．３５〜０．５０である。該比が０．１２未満であると、組成物の硬化前の流動性が低下する。該比が０．８０を超えると、強度発現性が低下する。 In the cement-based porous pavement composition of the present invention, the mass ratio of polymer to cement (polymer / cement) contained in the polymer emulsion for cement admixture is 0.12 to 0.80, preferably 0.20 to 0.70. , More preferably 0.30 to 0.60, particularly preferably 0.35 to 0.50. When the ratio is less than 0.12, the fluidity of the composition before curing decreases. When the ratio exceeds 0.80, strength developability decreases.
本発明のセメント系ポーラス舗装用組成物は、仕上げ性状及び強度発現性をより向上させる観点から、無機粉末（ただし、セメントを除く）を含んでいてもよい。
無機粉末の例としては、スラグ粉末、フライアッシュ、炭酸カルシウム粉末、砕石粉末等が挙げられる。これらは１種を単独で用いてもよく、２種以上を組み合わせて用いてもよい。
本発明で用いられる無機粉末のブレーン比表面積は、仕上げ性状及び強度発現性の観点から、好ましくは１，５００〜１５，０００ｃｍ２／ｇ、より好ましくは２，０００〜１０，０００ｃｍ２／ｇである。
セメント１００質量部に対する無機粉末の配合量は、好ましくは１００質量部以下、より好ましくは２０〜８０質量部、特に好ましくは４０〜７０質量部である。
The cement-based porous pavement composition of the present invention may contain an inorganic powder (excluding cement) from the viewpoint of further improving the finish properties and the strength development.
Examples of the inorganic powder include slag powder, fly ash, calcium carbonate powder, crushed stone powder and the like. These may be used alone or in combination of two or more.
Blaine specific surface area of the inorganic powder used in the present invention, from the viewpoint of finishing properties and strength development, preferably 1,500~15,000cm 2 / g, more preferably 2,000~10,000cm 2 / g is there.
The amount of the inorganic powder to be added to 100 parts by mass of the cement is preferably 100 parts by mass or less, more preferably 20 to 80 parts by mass, and particularly preferably 40 to 70 parts by mass.
本発明のセメント系ポーラス舗装用組成物は、必要に応じて、ＡＥ剤、減水剤、ＡＥ減水剤、高性能減水剤、高性能ＡＥ減水剤、流動化剤、硬化促進剤、凝結遅延剤等の各種混和剤を含んでいてもよい。
上記混和剤の配合量は、混和剤の種類によっても異なるが、セメント１００質量部に対して、通常、０．００１〜５質量部である。
The cement-based porous pavement composition of the present invention may contain, if necessary, an AE agent, a water reducing agent, an AE water reducing agent, a high-performance water reducing agent, a high-performance AE water reducing agent, a fluidizing agent, a curing accelerator, a setting retarder, and the like. May be included.
The amount of the admixture varies depending on the type of the admixture, but is usually 0.001 to 5 parts by mass with respect to 100 parts by mass of the cement.
本発明のセメント系ポーラス舗装用組成物において、水とセメントの質量比（水／セメント：以下、「水セメント比」ともいう。）は、好ましくは０．２〜０．６、より好ましくは０．３〜０．５である。該比が０．３以上であれば、仕上げ性状がより向上する。該比が０．６以下であれば、強度発現性がより向上する。
なお、上記水の量は、ポリマーエマルションに含まれる水と、任意に配合される水の合計量を意味する。本発明において水は、通常、セメント混和用ポリマーエマルションに含まれている。しかし、必要に応じて、さらに水を配合してもよい。
In the cement-based porous paving composition of the present invention, the mass ratio of water to cement (water / cement: hereinafter, also referred to as “water-cement ratio”) is preferably 0.2 to 0.6, more preferably 0. 0.3 to 0.5. When the ratio is 0.3 or more, the finish properties are further improved. When the ratio is 0.6 or less, strength developability is further improved.
The amount of water means the total amount of water contained in the polymer emulsion and water arbitrarily added. In the present invention, water is usually contained in a polymer emulsion for cement admixture. However, if necessary, water may be further added.
本発明のセメント系ポーラス舗装用組成物の調製方法は、特に限定されず、各材料を混合することで調製できる。中でも、運搬を容易にする等の観点から、粒度が３〜７ｍｍである骨材の割合が８０質量％以上である骨材Ｂ、セメント混和用ポリマーエマルション、上記ポリマーエマルションと上記骨材Ｂ以外の上記構成材料（セメント、粒度が２．５ｍｍ以下である骨材の割合が８０質量％以上である骨材Ａ、及び必要に応じて配合される無機粉末や各種混和剤）を含む粉粒状物の組み合わせからなるセメント系ポーラス舗装用資材を用いて調製する方法が好ましい。
この場合、セメント、上記骨材Ａ、及び必要に応じて配合される無機粉末や各種混和剤を含む粉粒状物と、上記骨材Ｂと、セメント混和用ポリマーエマルションを予め準備し、これらの粉粒状物と骨材Ｂとセメント混和用ポリマーエマルションを別々の収容手段（例えば、合成樹脂製の袋）に収容してもよい。
収容手段に収容される材料の合計質量は特に限定されないが、運搬を容易にし、かつ、ミキサー等の混合手段を使用せずに手で混合することができる等の観点から、通常、１〜１０ｋｇである。
The method for preparing the cement-based porous paving composition of the present invention is not particularly limited, and can be prepared by mixing the respective materials. Above all, from the viewpoint of facilitating transportation, etc., the ratio of the aggregate having a particle size of 3 to 7 mm is 80% by mass or more, the aggregate B, the polymer emulsion for cement admixture, and the polymer emulsion and the aggregate B other than the aggregate B A powdery or granular material containing the above constituent materials (cement, aggregate A having a proportion of aggregate having a particle size of 2.5 mm or less of 80% by mass or more, and inorganic powder and various admixtures blended as necessary) A method of preparing using a cement-based porous pavement material composed of a combination is preferable.
In this case, the cement, the above-mentioned aggregate A, and a powder and granular material containing an inorganic powder and various admixtures to be blended as required, the above-mentioned aggregate B, and a polymer emulsion for cement admixture are prepared in advance. The granular material, the aggregate B, and the polymer emulsion for admixing with cement may be stored in separate storage means (for example, a bag made of synthetic resin).
The total mass of the materials accommodated in the accommodating means is not particularly limited, but is usually 1 to 10 kg from the viewpoint of facilitating transportation and mixing by hand without using a mixing means such as a mixer. It is.
上述のセメント系ポーラス舗装用資材を用いることによって、セメント系ポーラス舗装の補修を必要とする部分（例えば、骨材飛散箇所、ポットホール、轍等）を容易にかつ迅速に補修することができる。
具体的には、施工現場またはその近傍において、セメント、上記骨材Ａ、及び必要に応じて配合される無機粉末や各種混和剤を含む粉粒状物と、上記骨材Ｂを混合して、粉粒状混合物を得る粉粒状混合物調製工程と、粉粒状混合物と、セメント混和用ポリマーエマルションを混合して、セメント系ポーラス舗装用組成物を調製する組成物調製工程と、セメント系ポーラス舗装用組成物を、セメント系ポーラス舗装の補修を必要とする部分（例えば、骨材飛散箇所、ポットホール、轍等）に充填する充填工程を含む補修方法が挙げられる。
粉粒状混合物調製工程、及び、組成物調製工程において行われる混合は、セメント、上記骨材Ａ、及び必要に応じて配合される無機粉末や各種混和剤を収容している収容手段、または、骨材Ｂを収容している収容手段内で、手を用いて行ってもよい。
また、所望の水セメント比にする目的で、市販のセメント混和用ポリマーエマルションとは別に、更に水を配合したい場合には、組成物調製工程において、粉粒状混合物と、セメント混和用ポリマーエマルションと、水（追加で配合される水）を混合してもよい。
また、本発明のセメント系ポーラス舗装用組成物は、充填工程において、補修を必要とする部分に充填し、コテ仕上げを行った後に、圧密や加圧の作業を行わなくてもよいことから、施工性に優れている。
By using the cement-based porous pavement material described above, it is possible to easily and quickly repair a portion of the cement-based porous pavement requiring repair (for example, an aggregate scattered portion, a pothole, a rut, etc.).
Specifically, at the construction site or in the vicinity thereof, cement, the above-mentioned aggregate A, and a powder and granular material containing an inorganic powder and various admixtures to be blended as necessary, and the above-mentioned aggregate B are mixed. A powdery / granular mixture preparation step of obtaining a granular mixture, a powdery / granular mixture, and a cement mixing polymer emulsion are mixed to prepare a cementitious porous paving composition; and a cementitious porous paving composition. A repair method including a filling step of filling a portion of the cement-based porous pavement requiring repair (for example, an aggregate scattered portion, a pothole, a rut, etc.).
The powdery and granular mixture preparation step, and the mixing performed in the composition preparation step, the cement, the above-mentioned aggregate A, and containing means containing the inorganic powder and various admixtures to be blended as necessary, or bone It may be carried out by hand in the storage means for storing the material B.
Further, for the purpose of achieving a desired water-cement ratio, in addition to a commercially available polymer emulsion for cement admixture, if it is desired to further add water, in the composition preparation step, a powdery and granular mixture, a polymer emulsion for cement admixture, Water (additionally added water) may be mixed.
In addition, the cement-based porous pavement composition of the present invention, in the filling step, after filling in a portion that needs repair, after performing ironing, since it is not necessary to perform the work of compaction or pressurization, Excellent workability.
以下、本発明を実施例により具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
［使用材料］
（１）セメント；超速硬セメント、太平洋セメント社製、商品名「スーパージェットセメント」
（２）骨材Ａ；珪砂、粒度：０．０７５〜２．５ｍｍの範囲内の粒体の割合が９０質量％以上のもの
（３）無機粉末；炭酸カルシウム粉末、ブレーン比表面積：５，１００ｃｍ２／ｇ
（４）骨材Ｂ；砕石、粒度が５〜７ｍｍである骨材の割合：９０質量％、粒度が２．５〜５ｍｍである骨材の割合：１０質量％
（５）セメント混和用ポリマーエマルション；アクリル系ポリマーを含むもの
（６）減水剤；ポリカルボン酸系粉末減水剤
Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to these Examples.
[Materials used]
(1) Cement; super-hard cement, manufactured by Taiheiyo Cement Co., Ltd., trade name "Super Jet Cement"
(2) Aggregate A; quartz sand, particle size: 90% by mass or more of particles in the range of 0.075 to 2.5 mm (3) Inorganic powder; calcium carbonate powder, Blaine specific surface area: 5,100 cm 2 / g
(4) Aggregate B; crushed stone, proportion of aggregate having a particle size of 5 to 7 mm: 90% by mass, ratio of aggregate having a particle size of 2.5 to 5mm: 10% by mass
(5) Polymer emulsion for cement admixture; containing acrylic polymer (6) Water reducing agent; Polycarboxylic acid-based powder water reducing agent
［実施例１］
上記セメントと上記珪砂（骨材Ａ）と上記無機粉末と上記減水剤を、合成樹脂製の袋内で混合して粉粒状物を得た後、上記骨材Ｂを袋内に投入して混合し、粉粒状混合物を得た。次いで、袋内の粉粒状混合物にセメント混和用ポリマーエマルションを投入して混合し、セメント系ポーラス舗装用組成物を得た。なお、混合は手を用いて行った。
各材料の配合量、上記組成物中、ポリマーとセメントの質量比（ポリマー／セメント）、及び、水とセメントの質量比（水／セメント）を表１に示す。また、得られたセメント系ポーラス舗装用組成物の質量は６．６ｋｇであった。
得られたセメント系ポーラス舗装用組成物を用いて、以下の評価を行った。
[Example 1]
The cement, the silica sand (aggregate A), the inorganic powder, and the water reducing agent are mixed in a synthetic resin bag to obtain a granular material, and then the aggregate B is charged into the bag and mixed. Thus, a powdery and granular mixture was obtained. Next, the polymer emulsion for cement admixture was added to and mixed with the powdery granular mixture in the bag to obtain a cement-based porous pavement composition. The mixing was performed by hand.
Table 1 shows the compounding amounts of the respective materials, the mass ratio of polymer and cement (polymer / cement), and the mass ratio of water and cement (water / cement) in the above composition. Further, the mass of the obtained cement-based porous pavement composition was 6.6 kg.
The following evaluation was performed using the obtained cement-based porous pavement composition.
（１）曲げ強さ及び圧縮強さの測定
「ＪＩＳ Ｒ ５２０１：２０１５（セメントの物理試験方法）」に準拠して、供試体を作製し、材齢１時間、及び、７日における曲げ強さ及び圧縮強さを測定した。
（２）交通の早期開放性の評価
セメント系ポーラス舗装用組成物を用いて、厚さ１５ｍｍの舗装を施工した。なお、コテ仕上げ後、圧密や加圧の作業は行わなかった。
施工して１時間経過後、舗装の表面に、約２，０００ｋｇ（約２トン）の車両を１回通過させ、舗装表面を確認したところ、骨材の飛散及び剥がれは見られなかった。
（３）付着強度の測定
下地となるアスファルト系ポーラス舗装の上部に、セメント系ポーラス舗装用組成物を用いて、厚さ２０ｍｍの舗装を施工して、供試体を得た。なお、コテ仕上げ後、圧密や加圧の作業は行わなかった。材齢７日の該供試体について、簡易付着試験機（サンコーテクノ社製）を用いて、付着試験を行い、供試体の付着強度を測定した。
(1) Measurement of flexural strength and compressive strength A specimen was prepared in accordance with “JIS R 5201: 2015 (Physical test method of cement)”, and the flexural strength at 1 hour of age and 7 days. And the compressive strength were measured.
(2) Evaluation of Early Opening of Traffic A pavement having a thickness of 15 mm was constructed using the cement-based porous pavement composition. After the ironing, no work of consolidation or pressurization was performed.
One hour after the construction, a vehicle of about 2,000 kg (about 2 tons) was passed once over the surface of the pavement, and the pavement surface was confirmed. As a result, no scattering or peeling of the aggregate was observed.
(3) Measurement of Adhesion Strength A pavement having a thickness of 20 mm was constructed using a cement-based porous pavement composition on top of an asphalt-based porous pavement serving as a foundation to obtain a specimen. After the ironing, no work of consolidation or pressurization was performed. An adhesion test was performed on the specimen having a material age of 7 days using a simple adhesion tester (manufactured by Sanko Techno) to measure the adhesion strength of the specimen.
（４）ホイールトラッキング試験
セメント系ポーラス舗装用組成物を用いて、縦３００ｍｍ×横３００ｍｍ×厚さ５０ｍｍの舗装を施工した。なお、コテ仕上げ後、圧密や加圧の作業は行わなかった。該舗装について、「舗装調査・試験法便覧（Ｂ００３ Ｍｅｔｈｏｄ ｏｆ Ｗｈｅｅｌ Ｔｒａｃｋｉｎｇ Ｔｅｓｔ）」に記載された方法に準拠して、温度：６０℃、荷重：６８６±１０Ｎ、速度：４２±１回／分間の条件下で、６０分間、ホイールトラッキング試験を行い、試験後の変位量を測定した。
（５）ねじり抵抗性試験
「舗装性能評価法別冊（１−３骨材飛散値）タイヤ旋回タイプＢ」に記載された方法に準拠して、温度：５０℃、荷重：４９０Ｎ、走行回数：１０．５回／分間の条件下で、ねじり抵抗性試験を行った。
０、３０、６０、９０、１２０分間経過後の、ねじり骨材飛散量の測定、及び、ねじり骨材飛散率（ねじり骨材飛散量／骨材の合計量×１００）を算出した。
（６）透水性
現場透水試験機を用いて、４００ミリリットルの水の透過時間を測定し、得られた時間（７．４７秒間）から、１５秒間換算透過水量を算出した。
各々の結果を、表２〜３に示す。
(4) Wheel tracking test A pavement having a length of 300 mm, a width of 300 mm and a thickness of 50 mm was constructed using the cement-based porous pavement composition. After the ironing, no work of consolidation or pressurization was performed. Regarding the pavement, a temperature: 60 ° C., a load: 686 ± 10 N, and a speed: 42 ± 1 times / min, according to the method described in “Pavement Survey and Test Method Handbook (B003 Method of Wheel Tracking Test)”. Under the conditions, a wheel tracking test was performed for 60 minutes, and the displacement after the test was measured.
(5) Torsion resistance test Temperature: 50 ° C., load: 490 N, number of runs: 10 according to the method described in “Pavement Performance Evaluation Method Separate Volume (1-3 Aggregate Scattering Value) Tire Turning Type B” A torsional resistance test was performed under a condition of 0.5 times / minute.
After 0, 30, 60, 90 and 120 minutes had elapsed, the amount of twisted aggregate scatter was measured, and the torsion aggregate scattering rate (total amount of twisted aggregate scattered / aggregate total x 100) was calculated.
(6) Permeability The permeation time of 400 ml of water was measured using an in-situ permeation tester, and the permeated water amount was calculated for 15 seconds from the obtained time (7.47 seconds).
Tables 2 and 3 show the results.
表２〜３から、本発明のセメント系ポーラス舗装用組成物を用いた舗装の、材齢１時間における強度は、曲げ強さの値として０．７Ｎ／ｍｍ２、圧縮強さの値として１．１Ｎ／ｍｍ２であった。また、早期開放性の評価において、舗装の厚みが１５ｍｍであっても、骨材の飛散及び剥がれが見られなかった。これらのことから、施工後、１時間経過時点において、交通の開放は可能であると判断できる。
付着強度は１．０Ｎ／ｍｍ２であり、十分な接着性を有していることがわかる。
ホイールトラッキング試験による変位量は０．０６ｍｍと小さいものであり、該数値から算出される動的安定度（ＤＳ：１ｍｍの轍を掘るのに要する回数）は６３，０００回／ｍｍであった。この数値は、密粒アスファルトの動的安定度（通常、６００〜１，０００回／ｍｍ）と比較して、極めて大きく、耐流動性に優れていることがわかる。なお、一般的なタイヤ旋回タイプＢによる高機能舗装に求められる変位量は５ｍｍ以下である。
ねじり抵抗性試験から、１２０分間経過後（１，２６０回転後）であっても、ねじり骨材飛散率は０．０％であり、耐骨材飛散性に優れていることがわかる。
なお、「舗装性能評価法別冊（１−３骨材飛散値）」に記載されている、ポリマー改質アスファルトＨ型の骨材飛散率は１４％である。
透過水量は８０３ミリリットル／１５秒間であり、透水性に優れていることがわかる。
From Tables 2 and 3, the strength of the pavement using the cement-based porous pavement composition of the present invention at an age of 1 hour was 0.7 N / mm 2 as the value of the bending strength and 1 as the value of the compressive strength. .1 N / mm 2 . In addition, in the evaluation of the early opening property, even if the thickness of the pavement was 15 mm, scattering and peeling of the aggregate were not observed. From these facts, it can be determined that opening of traffic is possible one hour after the construction.
The adhesive strength was 1.0 N / mm 2 , indicating that the adhesive had sufficient adhesiveness.
The amount of displacement in the wheel tracking test was as small as 0.06 mm, and the dynamic stability (DS: the number of times required to dig a rut of 1 mm) calculated from the numerical value was 63,000 times / mm. This value is extremely large as compared with the dynamic stability (normally 600 to 1,000 times / mm) of the dense-grained asphalt, and it can be seen that the fluid-resistance is excellent. The amount of displacement required for high-performance pavement using general tire turning type B is 5 mm or less.
From the torsional resistance test, even after 120 minutes (after 1,260 rotations), the torsional aggregate scattering rate is 0.0%, indicating that the aggregates have excellent scattering resistance.
The aggregate scatter rate of the polymer-modified asphalt H type described in “Pavement Performance Evaluation Method Supplement (1-3 Aggregate Dispersion Value)” is 14%.
The amount of permeated water was 803 ml / 15 seconds, indicating that the water permeation was excellent.
Claims (5)
上記セメントが超速硬セメントであり、
上記ポリマーエマルションに含まれるポリマーと上記セメントの質量比（ポリマー／セメント）が、０．３０〜０．６０であり、
上記セメント１００質量部に対して、上記骨材Ａの配合量が２０〜６０質量部であり、上記骨材Ｂの配合量が３００〜１，０００質量部であるセメント系ポーラス舗装用組成物を調製するためのセメント系ポーラス舗装用資材であって、
該資材が、上記骨材Ｂと、上記ポリマーエマルションと、上記ポリマーエマルションと上記骨材Ｂ以外の上記構成材料を含む粉粒状物の組み合わせからなることを特徴とするセメント系ポーラス舗装用資材。 Cement, aggregate A having a ratio of aggregates having a particle size of 2.5 mm or less of 80% by mass or more, aggregate B having a ratio of aggregates having a particle size of 5 to 7 mm of 80% by mass or more, and cement admixture A cement-based porous pavement composition containing a polymer emulsion for a constituent material,
The cement is a super-hard cement,
The mass ratio (polymer / cement) of the polymer and the cement contained in the polymer emulsion is 0.30 to 0.60 ,
With respect to the cement 100 parts by weight, a blending amount of the aggregate A is 20 to 60 parts by weight, the amount of the bone material B is cement-based porous paving composition is 300 to 1,000 parts by weight A cement-based porous pavement material for preparation,
A material for cement-based porous pavement, characterized in that the material comprises the above-mentioned aggregate B, the above-mentioned polymer emulsion, and a combination of the above-mentioned polymer emulsion and a granular material containing the above-mentioned constituent materials other than the above-mentioned aggregate B.
上記粉粒状物と、上記骨材Ｂを混合して、粉粒状混合物を得る粉粒状混合物調製工程と、
上記粉粒状混合物と、上記ポリマーエマルションを混合して、上記セメント系ポーラス舗装用組成物を調製する組成物調製工程と、
上記セメント系ポーラス舗装用組成物を、セメント系ポーラス舗装の補修を必要とする部分に充填する充填工程を含むことを特徴とするセメント系ポーラス舗装の補修方法。 A method for repairing a cement-based porous pavement using the cement-based porous pavement material according to any one of claims 1 to 4 ,
Mixing the above granular material and the above aggregate B to obtain a granular mixture preparation step of obtaining a granular mixture,
A composition preparation step of mixing the powdery and granular mixture and the polymer emulsion to prepare the cement-based porous pavement composition,
A method for repairing a cement-based porous pavement, comprising a filling step of filling the cement-based porous pavement composition into a portion requiring repair of the cement-based porous pavement.
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