JP6466701B2 - Paved road surface forming composition and paved road surface repair method - Google Patents
Paved road surface forming composition and paved road surface repair method Download PDFInfo
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- JP6466701B2 JP6466701B2 JP2014240751A JP2014240751A JP6466701B2 JP 6466701 B2 JP6466701 B2 JP 6466701B2 JP 2014240751 A JP2014240751 A JP 2014240751A JP 2014240751 A JP2014240751 A JP 2014240751A JP 6466701 B2 JP6466701 B2 JP 6466701B2
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- 239000000203 mixture Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 65
- 239000004568 cement Substances 0.000 claims description 65
- 239000000463 material Substances 0.000 claims description 54
- 239000000839 emulsion Substances 0.000 claims description 44
- 229920000642 polymer Polymers 0.000 claims description 42
- 239000004576 sand Substances 0.000 claims description 24
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 239000008187 granular material Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 239000011344 liquid material Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 20
- 239000000843 powder Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 10
- 239000010426 asphalt Substances 0.000 description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 description 10
- 239000004482 other powder Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 239000011398 Portland cement Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000011433 polymer cement mortar Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000012254 powdered material Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Road Repair (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
本発明は、舗装路面形成用組成物、及び、該組成物を用いた舗装路面の補修方法に関する。 The present invention relates to a paved road surface forming composition and a paved road surface repair method using the composition.
従来、アスファルト舗装の路面に生じた轍、ポットホール、クラック等の凹部に打設して補修するための材料として、アスファルト系補修材（例えば、加熱アスファルト補修材、常温アスファルト補修材等）や、反応硬化型樹脂系補修材（例えば、ＭＭＡ樹脂を含む補修材）や、セメント系補修材が知られている。
セメント系補修材の一例として、速硬性セメント、鉱物性微粉末、細骨材、高性能減水剤、繊維物質、及び水中不分離剤を含有してなるセメントモルタル用組成物であって、前記速硬性セメント１００質量部に対して、前記鉱物性微粉末が１０〜３０質量部、前記細骨材が５０〜１５０質量部、前記高性能減水剤が０．２〜０．３質量部、前記繊維物質が０．１〜１．０質量部、及び前記水中不分離剤が０．０１〜１．０質量部で配合され、前記鉱物性微粉末の粉末度が、４０００ｃｍ2／ｇ以上であり、前記繊維物質の長さが３〜３０ｍｍであることを特徴とするセメントモルタル用組成物が知られている（特許文献１）。
Conventionally, as materials for placing and repairing in recesses such as wrinkles, potholes, cracks, etc. generated on the road surface of asphalt pavement, asphalt type repair materials (for example, heated asphalt repair materials, room temperature asphalt repair materials, etc.), Reaction-curable resin-based repair materials (for example, repair materials containing MMA resin) and cement-based repair materials are known.
An example of a cement-based repair material is a cement mortar composition comprising a fast-hardening cement, a mineral fine powder, a fine aggregate, a high-performance water reducing agent, a fiber material, and an underwater non-separating agent. 10 to 30 parts by mass of the mineral fine powder, 50 to 150 parts by mass of the fine aggregate, 0.2 to 0.3 parts by mass of the high-performance water reducing agent, and 100 to 100 parts by mass of the hard cement 0.1 to 1.0 parts by mass of the substance and 0.01 to 1.0 parts by mass of the non-separating agent in water, and the fineness of the mineral fine powder is 4000 cm 2 / g or more, A cement mortar composition is known in which the fiber material has a length of 3 to 30 mm (Patent Document 1).
一方、アスファルト舗装の下方に位置するコンクリート床版まで劣化している場合における補修方法において、コンクリート床版に形成させた窪みに充填させるためのポリマーセメントモルタルとして、急硬性セメント、セメント用ポリマー、細骨材及び水を含有し、単位ポリマー量が５０〜１５０ｋｇ／ｍ３、水セメント比が２６〜３５％、ポリマーセメント比が１０〜３０％であるポリマーセメントモルタルが知られている（特許文献２）。 On the other hand, in the repair method when the concrete slab located below the asphalt pavement has deteriorated, as the polymer cement mortar for filling the depression formed in the concrete slab, rapid hardening cement, cement polymer, fine A polymer cement mortar containing aggregate and water, having a unit polymer amount of 50 to 150 kg / m 3 , a water cement ratio of 26 to 35%, and a polymer cement ratio of 10 to 30% is known (Patent Document 2). ).
アスファルト舗装の路面に生じた轍等の凹部に打設して補修するための材料として、上述のとおり、アスファルト系補修材や、反応硬化型樹脂系補修材や、セメント系補修材が知られている。
アスファルト系補修材は、施工性に優れるものの、耐久性（特に、耐摩耗性）等の物性に問題がある。
反応硬化型樹脂系補修材は、耐久性に優れるものの、有機溶剤を含むため特有の臭気がある点、及び、施工が複雑であり、施工作業者に習熟が必要とされる点で、短所を有する。
従来のセメント系補修材は、施工性に優れるものの、例えばアスファルト舗装の凹部（補修対象部分）に充填したときに剥離等が生じ易いという問題がある。
As mentioned above, asphalt-based repair materials, reactive-curing resin-based repair materials, and cement-based repair materials are known as materials to be repaired by placing them in recesses such as ridges generated on the road surface of asphalt pavement. Yes.
Asphalt repair materials have excellent workability, but have problems in physical properties such as durability (particularly wear resistance).
Although the reaction-curing resin-based repair material is excellent in durability, it has disadvantages in that it contains an organic solvent and has a specific odor, and the construction is complicated and requires construction workers to learn. Have.
Although the conventional cement-based repair material is excellent in workability, there is a problem that peeling or the like is likely to occur when filling a concave portion (repair target portion) of asphalt pavement, for example.
本発明の目的は、轍、ポットホール、クラック等の凹部の補修に用いるための舗装面の形成用の材料として十分に大きな強度（特に、圧縮強度）、優れた耐摩耗性、及び適度な弾性を有し、べたつきが少ないため車両の通行等に支障がなく、元の舗装材（下地）に対する追従性に優れるため剥離が生じ難く、さらには、施工性（特に、流動性に優れ、施工手順が簡易であり、臭気がないこと）に優れた舗装路面形成用組成物を提供することである。 The object of the present invention is to provide a sufficiently large strength (particularly compressive strength), excellent wear resistance, and moderate elasticity as a material for forming a pavement surface for use in repairing recesses such as wrinkles, potholes, and cracks. Because there is little stickiness, there is no hindrance to the passage of vehicles, etc., and excellent followability to the original pavement material (underground), so peeling does not occur easily. Is a simple composition and has no odor).
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、セメント混和用ポリマーエマルション、及び細骨材を含み、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特定の範囲内であり、セメント混和用ポリマーエマルション１００質量部当たりのセメントの量が特定の範囲内である舗装路面形成用組成物によれば、上述の目的を達成しうることを見出し、本発明を完成した。 As a result of intensive studies to solve the above-mentioned problems, the present inventor has included a cement, a polymer emulsion for mixing cement, and a fine aggregate, and has a fine aggregate having a particle size of 0.6 mm or less in the total amount of the fine aggregate. It is found that the above-mentioned object can be achieved by the composition for forming a pavement road surface in which the ratio of the ratio is within a specific range and the amount of cement per 100 parts by mass of the polymer emulsion for cement admixture is within the specific range. The present invention has been completed.
本発明は、以下の［１］〜［４］を提供するものである。
［１］ 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。
［２］ 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細骨材の量が、１００〜２，０００質量部である、上記［１］に記載の舗装路面形成用組成物。
［３］ 上記［１］又は［２］に記載の舗装路面形成用組成物を調製するための、液状物と粉粒状物の組み合わせからなる舗装路面形成用資材であって、上記液状物が、上記セメント混和用ポリマーエマルションからなり、上記粉粒状物が、上記セメント及び上記細骨材を含むことを特徴とする舗装路面形成用資材。
［４］ 上記［３］に記載の舗装路面形成用資材を用いた舗装路面の補修方法であって、上記液状物と上記粉粒状物を混合して、上記舗装路面形成用組成物を調製する組成物調製工程、及び、上記舗装路面形成用組成物を、舗装路面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舗装路面の補修方法。
The present invention provides the following [1] to [4].
[1] The proportion of fine aggregate having a particle size of 0.6 mm or less in the total amount of the fine aggregate, including a polymer emulsion for cement admixture, cement, and fine aggregate, is 10 to 100% by mass. The composition for pavement road surface formation characterized by the quantity of the said cement per 100 mass parts of polymer emulsions for mixing being 30-130 mass parts.
[2] The composition for forming a paved road surface according to the above [1], wherein the amount of the fine aggregate per 100 parts by mass of the cement-mixing polymer emulsion is 100 to 2,000 parts by mass.
[3] A paved road surface forming material comprising a combination of a liquid material and a granular material for preparing the paved road surface forming composition according to [1] or [2], wherein the liquid material is: A material for forming a pavement surface, comprising the polymer emulsion for mixing with cement, wherein the granular material contains the cement and the fine aggregate.
[4] A method for repairing a paved road surface using the material for forming a paved road surface according to [3] above, wherein the liquid material and the granular material are mixed to prepare the paved road surface forming composition. A method for repairing a paved road surface, comprising a composition preparing step and a filling step of filling the paved road surface forming composition into a portion requiring repair of the paved road surface.
本発明の舗装路面形成用組成物（以下、本発明の組成物ともいう。）は、優れた耐摩耗性（耐久性）、及び適度な弾性を有するので、例えば、車道として用いられる舗装の路面に生じた轍等の凹部に打設して補修するための材料として、好適に用いることができる。
また、本発明の組成物は、べたつきが少ないため、車道と歩道のいずれであっても、車両の通行や歩行者の歩行に支障がない。
また、本発明の組成物は、元の舗装材（下地）に対する追従性（変形した場合の付着性；弾性）に優れるため、下地からの剥離が生じ難く、施工不良等の発生が少ない。
さらに、本発明の組成物は、流動性に優れ、施工手順が簡易であり、有機溶剤を含まないゆえに臭気がないため、良好な作業環境の中で、容易にかつ迅速に施工することができる。よって、施工後に、早期の交通開放も可能である。
The composition for forming a pavement road surface of the present invention (hereinafter also referred to as the composition of the present invention) has excellent wear resistance (durability) and moderate elasticity, and therefore, for example, a pavement road surface used as a roadway. It can be suitably used as a material to be repaired by placing it in a recess such as a ridge generated in the above.
In addition, since the composition of the present invention has less stickiness, it does not hinder the passage of vehicles and the walking of pedestrians on either the roadway or the sidewalk.
Moreover, since the composition of this invention is excellent in the followability | trackability (adhesion property at the time of deformation | transformation; elasticity) with respect to the original pavement material (base | substrate), peeling from a base | substrate does not arise easily and generation | occurrence | production of construction failure etc. is few.
Furthermore, the composition of the present invention is excellent in fluidity, has a simple construction procedure, has no odor because it does not contain an organic solvent, and can be easily and quickly constructed in a good working environment. . Therefore, early opening of traffic is possible after construction.
本発明の舗装路面形成用組成物は、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質量部であるものである。
本発明で使用されるセメント混和用ポリマーエマルションの例としては、アクリル系エマルション、酢酸ビニル系エマルション、ブタジエン系エマルション、天然ゴム系エマルション等が挙げられる。
The composition for forming a paved road surface of the present invention comprises a polymer emulsion for cement admixture, cement, and fine aggregate, and the proportion of fine aggregate having a particle size of 0.6 mm or less in the total amount of the fine aggregate is 10 to 10. The amount of the cement per 100 parts by mass of the cement-mixing polymer emulsion is 30 to 130 parts by mass.
Examples of the polymer emulsion for admixture used in the present invention include acrylic emulsion, vinyl acetate emulsion, butadiene emulsion, natural rubber emulsion, and the like.
アクリル系エマルションの例としては、（メタ）アクリル酸エステルを重合してなるポリマーを含むエマルションや、（メタ）アクリル酸エステルとブタジエンを共重合してなるポリマーを含むエマルション等が挙げられる。
酢酸ビニル系エマルションの例としては、エチレン−酢酸ビニル共重合体（ＥＶＡ）を含むエマルションや、ポリ酢酸ビニル（ＰＶＡＣ）を含むエマルション等が挙げられる。
ブタジエン系エマルションの例としては、スチレンとブタジエンを共重合してなるポリマーを含むエマルションや、アクリロニトリルとブタジエンを共重合してなるポリマーを含むエマルション等が挙げられる。
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のガラス転移温度（Ｔｇ）は、元の舗装材（下地）に対する追従性を向上させる観点から、好ましくは０℃未満、より好ましくは、−１０℃以下、特に好ましくは、−２０℃以下である。
Examples of the acrylic emulsion include an emulsion containing a polymer obtained by polymerizing a (meth) acrylic acid ester, and an emulsion containing a polymer obtained by copolymerizing a (meth) acrylic acid ester and butadiene.
Examples of the vinyl acetate emulsion include an emulsion containing an ethylene-vinyl acetate copolymer (EVA) and an emulsion containing polyvinyl acetate (PVAC).
Examples of the butadiene-based emulsion include an emulsion containing a polymer obtained by copolymerizing styrene and butadiene, and an emulsion containing a polymer obtained by copolymerizing acrylonitrile and butadiene.
The glass transition temperature (Tg) of the polymer contained in the polymer emulsion for cement admixture is preferably less than 0 ° C., more preferably −10 ° C. or less, particularly from the viewpoint of improving the followability to the original pavement material (base). Preferably, it is -20 degrees C or less.
セメント混和用ポリマーエマルション中のポリマーの割合（固形分の割合）は、特に限定されないが、液分の量を少なくすることによる運搬の容易性や、ポリマーの量を少なくすることによる液状物としての取扱いの容易性等のバランスを良好にする観点から、好ましくは２０〜７０質量％、より好ましくは３０〜６０質量％、さらに好ましくは３５〜５５質量％、特に好ましくは４０〜５０質量％である。
本発明において、セメント混和用ポリマーエマルションは、他の材料との化学反応によって硬化するものではなく、後述するセメント、炭酸カルシウム粉末等の粉粒状物による脱水によって硬化するものである。特に、後述する超速硬セメント等の早期強度発現性に優れたセメントを用いることによって、セメント混和用ポリマーエマルションの脱水を促進し、当該セメント混和用ポリマーエマルションを含む組成物の硬化を、より速めることができる。
The ratio of the polymer in the polymer emulsion for cement admixture (the ratio of the solid content) is not particularly limited, but it is easy to transport by reducing the amount of liquid and as a liquid by reducing the amount of polymer. From the viewpoint of improving the balance such as ease of handling, it is preferably 20 to 70% by mass, more preferably 30 to 60% by mass, still more preferably 35 to 55% by mass, and particularly preferably 40 to 50% by mass. .
In the present invention, the polymer emulsion for cement admixture is not cured by a chemical reaction with other materials, but is cured by dehydration with a granular material such as cement and calcium carbonate powder described later. In particular, by using a cement excellent in early strength development such as ultrafast cement described later, the dehydration of the polymer emulsion for cement admixture is promoted, and the curing of the composition containing the polymer emulsion for cement admixture is accelerated. Can do.
本発明で使用されるセメントとしては、特に限定されるものではなく、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等の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等の混合セメントや、エコセメント等が挙げられる。
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 used in the present invention is not particularly limited, Portland cement such as super fast hard cement, ultra-high strength Portland cement, early strength Portland cement, ordinary Portland cement, blast furnace cement, fly ash cement, etc. Mixed cement and eco-cement.
Among these, from the viewpoint of early opening of traffic, ultrafast cement, ultra-high strength Portland cement, and early strong Portland cement are preferable, ultrafast cement and ultra-high strength Portland cement are more preferable, and ultrafast cement is particularly preferable.
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は、好ましくは３０〜１３０質量部、より好ましくは４０〜１３０質量部、特に好ましくは５０〜１２０質量部である。該量が３０質量部以上であると、圧縮強度、耐摩耗性、及び、べたつきの少なさを、より優れたものとすることができる。該量が１３０質量部以下であると、弾性が大きくなり、元の舗装材（下地）に対する追従性を、より優れたものとすることができる。 The amount of the cement per 100 parts by mass of the polymer emulsion for admixture with cement is preferably 30 to 130 parts by mass, more preferably 40 to 130 parts by mass, and particularly preferably 50 to 120 parts by mass. When the amount is 30 parts by mass or more, the compressive strength, the wear resistance, and the less stickiness can be further improved. When the amount is 130 parts by mass or less, the elasticity is increased, and the followability to the original pavement material (base) can be further improved.
本発明において、セメント以外に、他の粉末材料を用いることができる。
他の粉末材料の好ましい例としては、炭酸カルシウム粉末等が挙げられる。他の粉末材料として、炭酸カルシウム粉末を用いることによって、同量のセメントを用いた場合と同程度の流動性を確保しつつ、強度の過度な増大を抑制することができる。
他の粉末材料を用いる場合、セメントと他の粉末材料の合計量中の他の粉末材料の割合は、圧縮強度、及び、べたつきの少なさの観点から、好ましくは８０質量％以下である。
他の粉末材料（例えば、炭酸カルシウム粉末）のブレーン比表面積は、クラックの生じ難さ、及び、流動性（フロー値；コテの作業性及びコテへの混練物の付き難さ）の観点から、好ましくは２，０００〜２６，０００ｃｍ２／ｇ、より好ましくは２，３００〜１８，０００ｃｍ２／ｇ、さらに好ましくは２，５００〜１０，０００ｃｍ２／ｇ、特に好ましくは２，５００〜４，０００ｃｍ２／ｇである。
In the present invention, other powder materials can be used besides cement.
Preferable examples of other powder materials include calcium carbonate powder. By using calcium carbonate powder as another powder material, it is possible to suppress an excessive increase in strength while ensuring fluidity comparable to that when the same amount of cement is used.
When other powder materials are used, the ratio of the other powder materials in the total amount of cement and other powder materials is preferably 80% by mass or less from the viewpoint of compressive strength and low stickiness.
The specific surface area of branes of other powder materials (for example, calcium carbonate powder) is difficult to generate cracks, and from the viewpoint of fluidity (flow value; operability of the trowel and difficulty of attaching the kneaded material to the trowel). preferably 2,000~26,000cm 2 / g, more preferably 2,300~18,000cm 2 / g, more preferably 2,500~10,000cm 2 / g, particularly preferably 2,500～4, 000 cm 2 / g.
本発明において、細骨材としては、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％のものが使用される。該割合が１０質量％未満であると、本発明の組成物の硬化体（舗装路面形成体）の耐摩耗性が劣り、また、本発明の組成物の調製時に骨材分離が生じ易くなる。
該割合は、耐摩耗性、圧縮強度等のバランスを良好にする観点から、好ましくは２０〜１００質量％、より好ましくは２５〜１００質量％、特に好ましくは３０〜１００質量％である。
In the present invention, as the fine aggregate, a fine aggregate having a proportion of fine aggregate having a particle size of 0.6 mm or less in the total amount of the fine aggregate is used. When the proportion is less than 10% by mass, the hardened body (paved road surface forming body) of the composition of the present invention is inferior in wear resistance, and aggregate separation tends to occur during the preparation of the composition of the present invention.
The ratio is preferably 20 to 100% by mass, more preferably 25 to 100% by mass, and particularly preferably 30 to 100% by mass from the viewpoint of improving the balance of wear resistance, compressive strength, and the like.
本明細書中、細骨材の粒度とは、ふるいの目開き寸法に対応する大きさを意味する。例えば、０．６ｍｍ以下の粒度とは、目開きが０．６ｍｍのふるいを通過することを意味する。
本発明で用いる細骨材の粒度の上限値は、圧縮強度、摩耗減量等の観点から、好ましくは２ｍｍ、より好ましくは１．５ｍｍである。
本発明で用いる細骨材の粒度の下限値は、圧縮強度、表面クラックの防止等の観点から、好ましくは０．１５ｍｍである。
細骨材の種類としては、シリカサンド（珪砂）、川砂、山砂、陸砂、海砂、砕砂等が挙げられる。中でも、耐摩耗性、及び、他の材料との混合によるプレミックス品の調製の容易性の観点から、シリカサンド（珪砂）が好ましい。
In the present specification, the particle size of the fine aggregate means a size corresponding to the opening size of the sieve. For example, a particle size of 0.6 mm or less means passing through a sieve having an aperture of 0.6 mm.
The upper limit of the particle size of the fine aggregate used in the present invention is preferably 2 mm, more preferably 1.5 mm, from the viewpoint of compressive strength, wear loss, and the like.
The lower limit of the particle size of the fine aggregate used in the present invention is preferably 0.15 mm from the viewpoint of compressive strength, prevention of surface cracks, and the like.
Examples of the fine aggregate include silica sand (silica sand), river sand, mountain sand, land sand, sea sand, crushed sand and the like. Among these, silica sand (silica sand) is preferable from the viewpoint of wear resistance and ease of preparation of a premix product by mixing with other materials.
セメント混和用ポリマーエマルション１００質量部当たりの細骨材の量は、好ましくは１００〜２，０００質量部、より好ましくは１５０〜１，９００質量部、さらに好ましくは２００〜１，８００質量部、特に好ましくは２５０〜１，７００質量部である。該量が１００質量部以上であると、圧縮強度及び耐摩耗性を、より優れたものとすることができる。該量が２，０００質量部以下であると、流動性（フロー値）及び圧縮強度を、より優れたものとすることができる。
本発明において、セメント混和用ポリマーエマルションに含まれる水のみでは、水量が不足する場合には、本発明の組成物に、水を追加して配合することができる。
追加する水の量は、該量が大き過ぎると、セメント混和用ポリマーエマルション中の水との合計量が大き過ぎる場合があることから、粉末の全量（セメントと他の粉末材料の合計量）１００質量部当たりの量として、好ましくは１００質量部以下である。
The amount of fine aggregate per 100 parts by mass of the polymer emulsion for admixture with cement is preferably 100 to 2,000 parts by mass, more preferably 150 to 1,900 parts by mass, still more preferably 200 to 1,800 parts by mass, especially Preferably it is 250-1,700 mass parts. When the amount is 100 parts by mass or more, the compressive strength and the wear resistance can be further improved. When the amount is 2,000 parts by mass or less, fluidity (flow value) and compressive strength can be further improved.
In the present invention, when only the water contained in the polymer emulsion for admixture with cement is insufficient, the amount of water can be added to the composition of the present invention.
If the amount of water added is too large, the total amount of water in the polymer emulsion for cement admixture may be too large. Therefore, the total amount of powder (total amount of cement and other powder materials) is 100. The amount per part by mass is preferably 100 parts by mass or less.
本発明の組成物中の水の量（セメント混和用ポリマーエマルションに含まれる水と、追加される水の合計量）は、粉末の全量（セメントと他の粉末材料の合計量）１００質量部当たりの量として、好ましくは１０〜２００質量部、より好ましくは２０〜１８０質量部、特に好ましくは２５〜１６０質量部である。
該量が１０質量部以上であると、流動性（フロー値）が向上する。該量が２００質量部以下であると、硬化に要する時間を適切なもの（過度な遅延のないもの）とすることができ、また、クラックが生じ難くなる。
The amount of water in the composition of the present invention (the total amount of water contained in the polymer emulsion for cement admixture and added water) is 100 parts by weight of the total amount of powder (total amount of cement and other powder materials). The amount is preferably 10 to 200 parts by mass, more preferably 20 to 180 parts by mass, and particularly preferably 25 to 160 parts by mass.
When the amount is 10 parts by mass or more, fluidity (flow value) is improved. When the amount is 200 parts by mass or less, the time required for curing can be made appropriate (without excessive delay), and cracks hardly occur.
本発明の組成物の好ましい物性は、以下のとおりである。
フロー値（流動性）は、本発明の組成物のコテによる施工作業の容易性、及び、補修の対象である凹部への充填性の観点から、「ＪＡＳＳ １５ Ｍ−１０３」に準拠して測定した値として、好ましくは８０ｍｍ以上、より好ましくは９０ｍｍ以上、特に好ましくは１００ｍｍ以上である。
圧縮強度は、車両の通行に対する耐久性の観点からは、好ましくは０．１Ｎ／ｍｍ２以上、より好ましくは０．５Ｎ／ｍｍ２以上、特に好ましくは１．０Ｎ／ｍｍ２以上である。
圧縮強度は、下地に対する追従性の観点からは、好ましくは２０Ｎ／ｍｍ２以下、より好ましくは１５Ｎ／ｍｍ２以下、さらに好ましくは１０Ｎ／ｍｍ２以下、特に好ましくは８Ｎ／ｍｍ２以下である。
ここで、圧縮強度の値は、「ＪＩＳ Ａ １１０８」に準拠して測定した値である。
摩耗減量（車両の通行等に対する耐摩耗性）は、「ＪＩＳ Ｋ ７２０４」に準拠して、荷重１，０００ｇｆ、１，０００回転の後の時点で測定した値として、好ましくは１．０ｇ以下、より好ましくは０．８ｇ以下、特に好ましくは０．６ｇ以下である。
Preferred physical properties of the composition of the present invention are as follows.
The flow value (fluidity) is measured in accordance with “JASS 15 M-103” from the viewpoint of ease of construction work with a trowel of the composition of the present invention and filling ability to a concave portion to be repaired. The value is preferably 80 mm or more, more preferably 90 mm or more, and particularly preferably 100 mm or more.
The compressive strength is preferably 0.1 N / mm 2 or more, more preferably 0.5 N / mm 2 or more, and particularly preferably 1.0 N / mm 2 or more from the viewpoint of durability against vehicle traffic.
Compressive strength, from the viewpoint of followability to the base, preferably 20 N / mm 2 or less, more preferably 15N / mm 2 or less, more preferably 10 N / mm 2, particularly preferably at most 8N / mm 2.
Here, the value of the compressive strength is a value measured according to “JIS A 1108”.
Abrasion weight loss (abrasion resistance against vehicle traffic etc.) is preferably 1.0 g or less as a value measured at a time point after a load of 1,000 gf and 1,000 revolutions according to “JIS K 7204”. More preferably, it is 0.8 g or less, Most preferably, it is 0.6 g or less.
本発明の組成物は、液状物と粉粒状物の組み合わせ（具体的には、液状物と粉粒状物を混合せずに、別々に調製したもの）からなる舗装路面形成用資材（以下、本発明の資材ともいう。）を用いて、調製することができる。
この場合、液状物として、上述のセメント混和用ポリマーエマルションからなるものを準備し、かつ、粉粒状物（粉体及び粒体）として、セメント、細骨材、及び必要に応じて配合可能な他の粉粒状の材料（例えば、炭酸カルシウム粉末）からなるものを準備し、これらの液状物と粉粒状物を別々の収容手段（例えば、コンテナー）に収容することによって、舗装路面形成用資材を調製することができる。
また、粉粒状物を収容手段に収容する形態は、粉粒状物を構成するすべての材料を、一つの収容手段に収容する形態（すべての粉粒状物を含むプレミックス品）でもよいし、あるいは、粉粒状物を構成する複数の種類の材料を、二つ以上の収容手段に分けて収容する形態（例えば、セメント及び他の粉末材料からなるプレミックス品である粉体と、細骨材からなる粒体とを分けて、二つの収容手段に収容したり、あるいは、３種類以上の材料を、種類毎に分けて、三つ以上の収容手段に収容する形態）でもよい。
The composition of the present invention is a paved road surface forming material (hereinafter referred to as the present material) comprising a combination of a liquid material and a granular material (specifically, prepared separately without mixing the liquid material and the granular material). It is also referred to as the material of the invention.).
In this case, a liquid material comprising the above-described cement-mixing polymer emulsion is prepared, and as a granular material (powder and granule), cement, fine aggregate, and others that can be blended as necessary The material for the pavement road surface is prepared by preparing the material consisting of the powdered material (for example, calcium carbonate powder) and storing these liquid material and powdered material in separate storage means (for example, containers) can do.
Moreover, the form which accommodates a granular material in an accommodation means may be the form (premix goods containing all the granular material) which accommodates all the materials which comprise a granular material in one accommodation means, or A form in which a plurality of types of materials constituting the powder and granular material are stored in two or more storage means (for example, a powder that is a premix product made of cement and other powder materials, and a fine aggregate The granular body may be divided and stored in two storage means, or three or more types of materials may be stored for each type and stored in three or more storage means).
上述の本発明の資材を用いることによって、舗装路面の補修を必要とする部分（例えば、轍、ポットホール、クラック等の凹部）を容易にかつ迅速に補修することができる。
具体的には、本発明の資材を用いた舗装路面の補修方法は、本発明の資材を構成する液状物と粉粒状物を、施工現場またはその近傍の場所で混合して、本発明の組成物（舗装路面形成用組成物）を調製する組成物調製工程、及び、この舗装路面形成用組成物を、舗装路面の補修を必要とする部分（轍、ポットホール、クラック等の凹部や、段差や、高架ジョイントの擦り付け等）に充填する充填工程を含む。
By using the material of the present invention described above, it is possible to easily and quickly repair a portion that requires repair of the paved road surface (for example, a recess such as a ridge, a pothole, or a crack).
Specifically, the method for repairing a paved road surface using the material of the present invention is the composition of the present invention, in which the liquid material and the granular material constituting the material of the present invention are mixed at the construction site or in the vicinity thereof. A composition preparation step for preparing a product (a composition for forming a paved road surface), and a portion of this composition for forming a paved road surface that requires repair of the paved road surface (concaves, potholes, cracks, etc. And a filling step for filling the elevated joint and the like.
以下、実施例によって本発明を説明する。本発明は、以下の実施例によって限定されるものではない
［使用材料］
以下に示す材料を使用した。
（ａ）セメント混和用ポリマーエマルション：アクリル系エマルション（アクリル酸エステルを重合してなるポリマー；固形分であるポリマーの含有率：４６質量％；ガラス転移温度（Ｔｇ）：−５２℃）
（ｂ）セメント：超速硬セメント（太平洋セメント社製）
（ｃ）細骨材：シリカサンド（粒径：０．１５〜１．５ｍｍ）
（ｄ）セメント以外の粉末：炭酸カルシウム粉末（ブレーン比表面積：３，０００ｃｍ２／ｇ）
なお、表１中、セメント混和用ポリマーエマルションは、「ポリマーエマルション」と略記している。炭酸カルシウム粉末は、「炭酸カルシウム」と略記している。
Hereinafter, the present invention will be described by way of examples. The present invention is not limited by the following Examples [Materials Used]
The following materials were used.
(A) Cement admixture polymer emulsion: Acrylic emulsion (polymer obtained by polymerizing acrylic ester; content of polymer as solid content: 46% by mass; glass transition temperature (Tg): −52 ° C.)
(B) Cement: Super fast cement (made by Taiheiyo Cement)
(C) Fine aggregate: silica sand (particle size: 0.15 to 1.5 mm)
(D) Powder other than cement: Calcium carbonate powder (Blaine specific surface area: 3,000 cm 2 / g)
In Table 1, the polymer emulsion for mixing with cement is abbreviated as “polymer emulsion”. The calcium carbonate powder is abbreviated as “calcium carbonate”.
［実施例１〜１２、比較例１〜４］
表１に示す配合量（質量部）の各材料を混練して、本発明の組成物（実施例１〜１２）、及び本発明に該当しない組成物（比較例１〜４）を調製した。
なお、実施例１〜３及び比較例１は、シリカサンドの量が５００質量部である場合において、シリカサンドの粒度分布を変えて実験したものである。
実施例４〜６及び比較例２は、シリカサンドの量が１０００質量部である場合において、シリカサンドの粒度分布を変えて実験したものである。
実施例７〜９及び比較例３〜４は、粉末の量（セメントと炭酸カルシウム粉末の合計量）が３００質量部である場合において、セメントと炭酸カルシウム粉末の配合割合を変えて実験したものである。
実施例１０〜１２は、シリカサンドの量を変えて実験したものである。
[Examples 1 to 12, Comparative Examples 1 to 4]
Each material of the compounding quantity (mass part) shown in Table 1 was knead | mixed, and the composition (Examples 1-12) of this invention and the composition (comparative examples 1-4) not corresponding to this invention were prepared.
In addition, Examples 1-3 and the comparative example 1 experimented by changing the particle size distribution of silica sand, when the amount of silica sand is 500 mass parts.
In Examples 4 to 6 and Comparative Example 2, the experiment was performed by changing the particle size distribution of the silica sand when the amount of the silica sand was 1000 parts by mass.
In Examples 7 to 9 and Comparative Examples 3 to 4, when the amount of powder (total amount of cement and calcium carbonate powder) was 300 parts by mass, the blending ratio of cement and calcium carbonate powder was changed and experimented. is there.
Examples 10 to 12 are experiments in which the amount of silica sand was changed.
表１中、「シリカサンドの粒径」の欄において、「０．１５〜０．６ｍｍ（質量％）」は、粒径が０．１５ｍｍを超え、０．６ｍｍ以下のシリカサンドの割合（目開き０．６ｍｍのふるいを通過し、かつ、目開き０．１５ｍｍのふるいを通過しないシリカサンドの割合）を表す。また、「０．６〜１．５ｍｍ（質量％）」は、粒径が０．６ｍｍを超え、１．５ｍｍ以下のシリカサンドの割合（目開き１．５ｍｍのふるいを通過し、かつ、目開き０．６ｍｍのふるいを通過しないシリカサンドの割合）を表す。
表１中、「ポリマーエマルション」の配合量である「１００質量部」は、固形分と、液分である水の合計量（固形分の量：４６質量部）を表す。
表１中、「追加の水」の配合量は、「ポリマーエマルション」に含まれる水以外の、追加で配合された水の量を表す。
In Table 1, in the column of “particle diameter of silica sand”, “0.15 to 0.6 mm (mass%)” is the ratio of silica sand having a particle diameter of more than 0.15 mm and not more than 0.6 mm (target It represents the ratio of silica sand that passes through a sieve having an aperture of 0.6 mm and does not pass through a sieve having an aperture of 0.15 mm. Further, “0.6 to 1.5 mm (mass%)” means a ratio of silica sand having a particle diameter of more than 0.6 mm and not more than 1.5 mm (passing through a sieve having an opening of 1.5 mm, and The ratio of silica sand that does not pass through a 0.6 mm sieve).
In Table 1, “100 parts by mass”, which is the blending amount of “polymer emulsion”, represents the total amount of solids and water as a liquid (amount of solids: 46 parts by mass).
In Table 1, the blending amount of “additional water” represents the amount of water blended in addition to the water contained in the “polymer emulsion”.
調製した各組成物（実施例１〜１４、比較例１〜２）について、以下の物性を以下のように評価した。
（１）フロー値
「ＪＡＳＳ １５ Ｍ−１０３」に準拠して、組成物のフロー値（単位：ｍｍ）を測定した。
（２）骨材分離
組成物の調製直後に、目視によって、骨材の分離の有無を調べた。具体的には、骨材の分離によって、組成物の表面にペースト分や樹脂が浮き上がっていたり、ブリーディングが発生しているか否かを調べた。表１中、骨材の分離が認められなかったものを「○」、骨材の分離が認められたものを「×」として評価した。
（３）圧縮強度
「ＪＩＳ Ａ １１０８」に準拠して、組成物の硬化体の圧縮強度を測定した。
（４）摩耗減量
「ＪＩＳ Ｋ ７２０４」（摩耗輪によるプラスチックの摩耗試験方法）に準拠して、テーバー式摩耗試験機を用いて、摩耗によって削られていく試験体（組成物の硬化体）の質量の減少量を測定した。この際に使用した摩耗輪は、「ＧＣ−１５０Ｈ」であった。また、荷重は１，０００ｇｆに定めた。測定の時点は、摩耗輪が１，０００回転した後の時点であった。
About each prepared composition (Examples 1-14, Comparative Examples 1-2), the following physical properties were evaluated as follows.
(1) Flow value Based on "JASS 15 M-103", the flow value (unit: mm) of the composition was measured.
(2) Aggregate separation Immediately after the preparation of the composition, the presence or absence of separation of the aggregate was visually examined. Specifically, it was examined whether or not a paste or a resin floated on the surface of the composition or bleeding occurred due to the separation of the aggregate. In Table 1, the case where the separation of the aggregate was not recognized was evaluated as “◯”, and the case where the separation of the aggregate was recognized was evaluated as “x”.
(3) Compressive strength Based on "JIS A 1108", the compressive strength of the cured body of the composition was measured.
(4) Wear reduction According to “JIS K 7204” (plastic wear test method using wear wheels), a specimen (cured body of the composition) that is scraped by wear using a Taber type wear tester. The amount of mass loss was measured. The wear wheel used at this time was “GC-150H”. The load was set at 1,000 gf. The time of measurement was the time after the wear wheel had rotated 1,000 times.
（５）表面クラック
アスファルト舗装体に１０ｍｍの厚みになるように組成物を塗り付けた場合における初期クラックの発生の有無を、目視によって調べた。表１中、初期クラックの発生が認められなかったものを「○」、初期クラックの発生が認められたものを「×」として評価した。
（６）タック
組成物の硬化体の表面のべたつき（タック）を、触手によって評価した。べたつきが認められなかったものを「○」、べたつきがわずかに認められたものを「△」、べたつきが大きな程度で認められたものを「×」として評価した。
（７）弾性
厚み１ｍｍのプラスチック板（下地）に、２ｍｍの厚みになるように組成物を塗り付けて硬化させた後、プラスチック板（下地）を９０度（直角）に折り曲げたときに、組成物の硬化体がプラスチック板（下地）から剥離せずに追従するか否かを、目視によって調べた。表１中、剥離が認められなかったものを「○」、剥離が認められたものを「×」として評価した。
以上の結果を表１に示す。
(5) Surface crack The presence or absence of the generation | occurrence | production of the initial stage crack when the composition was apply | coated so that it might become a thickness of 10 mm to asphalt pavement was investigated visually. In Table 1, the case where the initial crack was not observed was evaluated as “◯”, and the case where the initial crack was observed was evaluated as “x”.
(6) Tack The stickiness (tack) of the surface of the cured product of the composition was evaluated by a tentacle. Evaluation was made as “◯” when no stickiness was observed, “△” when the stickiness was slightly recognized, and “X” when the stickiness was recognized to a large extent.
(7) Elasticity When a plastic plate (base) having a thickness of 1 mm is coated with a composition so as to have a thickness of 2 mm and cured, then the plastic plate (base) is bent at 90 degrees (right angle). Whether or not the cured body of the object followed the plastic plate (underlying) without peeling off was examined visually. In Table 1, the case where peeling was not recognized was evaluated as “◯”, and the case where peeling was observed was evaluated as “x”.
The results are shown in Table 1.
表１から、本発明の組成物（実施例１〜１２）は、流動性（フロー値）、組成物の均一性（骨材分離がないこと）、機械的強度（圧縮強度）、耐久性（摩耗減量）、外観（表面クラック）、組成物の表面の性状（タック；べたつき）、及び、下地に対する追従性（弾性）のすべてにおいて、優れていることがわかる。
一方、本発明に該当しない組成物は、組成物の均一性（骨材分離がないこと）及び耐久性（摩耗減量）に劣る（比較例１〜２）、または、弾性に劣る（比較例３〜４）ことがわかる。
From Table 1, the compositions (Examples 1 to 12) of the present invention have fluidity (flow value), composition uniformity (no aggregate separation), mechanical strength (compressive strength), durability ( It can be seen that they are all excellent in terms of weight loss (wear loss), appearance (surface cracks), surface properties of the composition (tack; stickiness), and followability (elasticity) to the substrate.
On the other hand, a composition that does not fall under the present invention is inferior in uniformity (no aggregate separation) and durability (loss in wear) of the composition (Comparative Examples 1-2) or inferior in elasticity (Comparative Example 3). ~ 4)
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