JP3490918B2 - Preparation of asphalt mixture for road pavement - Google Patents
Preparation of asphalt mixture for road pavementInfo
- Publication number
- JP3490918B2 JP3490918B2 JP33875998A JP33875998A JP3490918B2 JP 3490918 B2 JP3490918 B2 JP 3490918B2 JP 33875998 A JP33875998 A JP 33875998A JP 33875998 A JP33875998 A JP 33875998A JP 3490918 B2 JP3490918 B2 JP 3490918B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- particles
- asphalt mixture
- dolomite
- road surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アスファルト混合
物、特に耐流動性及び耐磨耗性に優れた道路舗装用アス
ファルト混合物の製法に属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an asphalt mixture, particularly an asphalt mixture for road paving having excellent fluidity resistance and abrasion resistance.
【０００２】[0002]
【従来の技術】例えば、特公平５−８５５９１号公報に
示されるように、ドロマイトを含みかつ食塩より優れた
凍結防止効果を有する凍結防止剤は公知である。この凍
結防止剤は、ドロマイトに燐酸と有機カルボン酸を加え
て混合し、反応させて得た反応生成物を有効成分とす
る。この道路凍結防止剤は、道路表面となるアスファル
ト混合物に添加され、氷又は雪の道路表面への付着を防
止する作用がある。また、特開平５−９８１６５号公報
には、路面の機械的強度を向上するため、ポリオレフィ
ン系繊維を混合した舗装用組成物が開示されている。こ
の舗装用組成物は、基材に軟化形又は融解形に加熱する
前又は同時に使用するのに適したアスファルトタイプの
材料基質成分及びポリオレフィンからなる強化繊維並び
に任意に増粘剤及び硬化剤及び凝結物を含有する繊維強
化アスファルトタイプの舗装用組成物である。この組成
物は、強化繊維がポリオレフィン湿潤性強化成分及びポ
リオレフィン湿潤性強化成分と結合したポリオレフィン
含有結合成分からなる二成分の繊維であり、結合成分は
強化成分よりも低い軟化点及び融点を有し、舗装用組成
物が結合成分の軟化点と強化成分の融点との間に存在す
る温度範囲内で使用稠度を有する点に特徴がある。繊維
強化アスファルトタイプの舗装用組成物は例えば基材上
に均一に広がり、圧縮及び冷却後に相互に結合する強化
繊維を含有する熱融解舗装混合物として使用することが
できる。2. Description of the Related Art For example, as shown in Japanese Patent Publication No. 5-85591, an antifreezing agent containing dolomite and having an antifreezing effect superior to that of sodium chloride is known. This antifreezing agent contains a reaction product obtained by adding phosphoric acid and an organic carboxylic acid to dolomite and mixing them to obtain an active ingredient. This road deicing agent is added to the asphalt mixture that forms the road surface and has the function of preventing ice or snow from adhering to the road surface. Further, Japanese Patent Laid-Open No. 5-98165 discloses a paving composition containing a polyolefin fiber in order to improve the mechanical strength of the road surface. This paving composition comprises a reinforcing fiber consisting of an asphalt-type material matrix component and a polyolefin suitable for use prior to or simultaneously with heating to a softened or melted form on a substrate and optionally a thickener and hardener and setting agent. It is a fiber-reinforced asphalt type paving composition containing a product. The composition is a bicomponent fiber in which the reinforcing fibers consist of a polyolefin wettability-enhancing component and a polyolefin-containing binding component combined with a polyolefin wettability-enhancing component, the binding component having a lower softening point and melting point than the reinforcing component. The paving composition is characterized in that it has a use consistency within a temperature range existing between the softening point of the binding component and the melting point of the reinforcing component. Fiber-reinforced asphalt-type paving compositions can be used, for example, as hot-melt paving mixtures containing reinforcing fibers that spread evenly over a substrate and bond to one another after compression and cooling.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、特公平
５−８５５９１号公報に示される道路凍結防止剤は、反
応生成物、親水性粒子、疎水性多孔質粒子等を混合して
構成されるので、アスファルト混合物の耐流動性及び耐
磨耗性が低下する難点がある。また、特開平５−９８１
６５号公報の舗装用組成物は、アスファルト混合物中で
ポリオレフィン系繊維が均一に分散しないため、耐流動
性及び耐磨耗性に劣る欠点がある。本発明は、耐流動
性、耐磨耗性に優れ、氷、雪が表面に付着しない道路舗
装用アスファルト混合物の製法を提供することを目的と
する。However, since the road deicing agent disclosed in Japanese Patent Publication No. 5-85591 is constituted by mixing reaction products, hydrophilic particles, hydrophobic porous particles and the like, There is a drawback that the flow resistance and abrasion resistance of the asphalt mixture are lowered. In addition, JP-A-5-981
The paving composition of Japanese Patent No. 65 has a drawback that it has poor flow resistance and abrasion resistance because the polyolefin fibers are not uniformly dispersed in the asphalt mixture. It is an object of the present invention to provide a method for producing an asphalt mixture for road paving, which has excellent fluidity resistance and abrasion resistance, and does not have ice or snow on its surface.
【０００４】[0004]
【課題を解決するための手段】本発明による道路舗装用
アスファルト混合物の製法は、ドロマイトと、燐酸と、
有機カルボン酸とを反応させてドロマイト反応生成物を
得る工程と、ドロマイト反応生成物と、竹のセルロース
繊維とを混合して路面凍結防止剤を得る工程と、路面凍
結防止剤と、アスファルトと、骨材とを混合して、竹の
セルロース繊維を０.０５〜１.０%含有するアスファル
ト混合物を得る工程とを含む。本発明者の長期間の研究
の結果、ドロマイトに燐酸と有機カルボン酸を加えて、
反応させて得たドロマイト反応生成物に、竹のセルロー
ス繊維を混合すると、耐流動性、耐磨耗性に優れ、氷、
雪が路面表面に付着しない路面凍結防止剤を得られるこ
とが判明した。A method for producing an asphalt mixture for road paving according to the present invention comprises dolomite, phosphoric acid and
A step of reacting with an organic carboxylic acid to obtain a dolomite reaction product, a step of mixing a dolomite reaction product and bamboo cellulose fiber to obtain a road surface antifreezing agent, a road surface antifreezing agent, and asphalt, Mixing with an aggregate to obtain an asphalt mixture containing 0.05 to 1.0% of bamboo cellulose fibers. As a result of the present inventor's long-term research, by adding phosphoric acid and an organic carboxylic acid to dolomite,
When the cellulose fiber of bamboo is mixed with the dolomite reaction product obtained by the reaction, it has excellent fluidity and abrasion resistance, and ice,
It was found that a road surface antifreezing agent can be obtained in which snow does not adhere to the road surface.
【０００５】[0005]
【発明の実施の形態】本発明による耐流動性及び耐磨耗
性に優れた道路舗装用アスファルト混合物の製法の実施
の形態を説明する。本発明に使用するドロマイトは、下
式で表されるカルシウム・マグネシウムの炭酸塩鉱物：
ＣａＣＯ3・ＭｇＣＯ3又はＣａ・Ｍｇ(ＣＯ3)2
であり、ドロマイト反応生成物は、ドロマイトに燐酸と
有機カルボン酸を加えて混合反応させて得ることができ
る。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for producing an asphalt mixture for road paving having excellent fluidity and abrasion resistance according to the present invention will be described. The dolomite used in the present invention is a calcium / magnesium carbonate mineral represented by the following formula: CaCO 3 .MgCO 3 or Ca.Mg (CO 3 ) 2. The dolomite reaction product is dolomite containing phosphoric acid and an organic compound. It can be obtained by adding a carboxylic acid and carrying out a mixed reaction.
【０００６】竹はイネ科中のタケ亜科に属する植物の総
称である。弾力性に富み、割裂きしやすく細割りに適す
る。マダケ、モウソウチク、ハチク等の日本産竹材又は
中国産若しくは外国産竹材を使用することができる。竹
繊維はその形態がエスパルト繊維に似ており、加熱され
たアスファルトを吸着して路面材料としてアスファルト
と馴染みがよい。また、適度な弾性及び防滑性を生ず
る。Bamboo is a general term for plants belonging to the subfamily Bamboo subfamily of the family Gramineae. Rich in elasticity, easy to split and suitable for subdivision. Bamboo wood from Japan such as bamboo shoots, bamboo shoots, and beech, or bamboo wood from China or foreign countries can be used. Bamboo fiber is similar in shape to esparto fiber, and absorbs heated asphalt and is well-suited to asphalt as a road surface material. In addition, it produces appropriate elasticity and slip resistance.
【０００７】[0007]
【表１】 [Table 1]
【０００８】ドロマイトは天然に産するが、純正なもの
はなく、ＣａＣＯ3・ＭａＣＯ3又はＣａ・Ｍｇ(ＣＯ3)2
の形で表される複塩を主成分とする。加熱下で燐酸（Ｈ
3ＰＯ4）と酢酸（ＣＨ3ＣＯＯＨ）の混酸を反応させる
と、一般的に下記組成の化合物が得られる。
ＭｇＨＰＯ4・Ｍｇ(ＣＨ3ＣＯＯ)2、及びＣａＨＰＯ4・
Ｃａ(ＣＨ3ＣＯＯ)2
（小量はＭｇ3(ＰＯ4)2、Ｃａ3(ＰＯ4)2となる。）Dolomite naturally occurs, but it is genuine
Not CaCO3・ MaCO3Or Ca / Mg (CO3)2
The main component is a double salt represented by the form. Phosphoric acid (H
3POFour) And acetic acid (CH3React with mixed acid (COOH)
In general, a compound having the following composition is obtained.
MgHPOFour・ Mg (CH3COO)2, And CaHPOFour・
Ca (CH3COO)2
(Small amount is Mg3(POFour)2, Ca3(POFour)2Becomes )
【０００９】このドロマイト反応生成物を氷点降下剤と
して加えた微粒子混合物を舗装層に添加すると、路面温
度−９℃で凍結防止効果を発揮し、食塩の−３℃を遙か
に上回る優れた効果を奏する。しかも、保管、製造上及
び舗装作業上の取扱の容易で、舗装層の強度劣化を招来
しない。前記ドロマイト反応生成物は、実際には燐酸イ
オン（ＰＯ4 3-）とカルボキシルイオン（ＣＯＯ-）とが
共存する状態で反応した場合は、「錯塩」を形成し、そ
れが風雪と接してイオン化すると、錯イオン：
例（１） [Ｍ(ＣＨ3ＣＯＯ)3]-
（ＭはＣａ、Ｍｇ）
例（２）This dolomite reaction product was used as a freezing point depressant.
If the fine particle mixture added in step 1 is added to the pavement layer, the road surface temperature
Demonstrate anti-freezing effect at -9 ℃
It has an excellent effect that exceeds. Moreover, storage and manufacturing
Easy to handle during paving work, resulting in deterioration of pavement layer strength
do not do. The dolomite reaction product is actually a phosphoric acid salt.
ON (POFour 3-) And carboxyl ion (COO-) And
When they react in the coexisting state, they form a “complex salt” and
When it comes into contact with wind and snow and is ionized, complex ions:
Example (1) [M (CH3COO)3]-
(M is Ca, Mg)
Example (2)
【００１０】[0010]
【化１】 [Chemical 1]
【００１１】などを形成すると考えられ、単純な酸イオ
ン：ＰＯ4 3-、ＨＰＯ4 2-、ＣＯＯ-にイオン化しない。
ドロマイトの酸化による錯塩、錯イオンの形を完全に学
問的に特定することは困難であるが、常に反復再現性の
ある結果が得られるため、特にドロマイトを混酸と反応
させた場合、反応生成物が錯塩を作りかつ錯イオン化す
ることが大幅な氷点降下作用に重要に関与するものと考
えられる。有機カルボン酸は、蟻酸、酢酸、プロピオン
酸、安息香酸を使用できるが、酢酸が好ましい。燐酸と
有機カルボン酸の使用割合は、燐酸１に対し１〜１０が
好ましい。It is considered that the above -mentioned substances are formed and does not ionize into simple acid ions: PO 4 3− , HPO 4 2− , COO − .
It is difficult to completely academically identify the complex salt and complex ion forms due to the oxidation of dolomite, but it is always possible to obtain reproducible results, so especially when dolomite is reacted with a mixed acid, the reaction product It is considered that the formation of complex salts and their complex ionization are important factors in the significant freezing point depressing action. As the organic carboxylic acid, formic acid, acetic acid, propionic acid and benzoic acid can be used, but acetic acid is preferable. The use ratio of phosphoric acid and organic carboxylic acid is preferably 1 to 10 per 1 of phosphoric acid.
【００１２】ドロマイト反応生成物に竹のセルロース繊
維及び必要に応じて親水性粒子、疎水性多孔質粒子を混
合して路面凍結防止剤として使用する。環境に無害の竹
のセルロース繊維は、例えばエムアンドイー株式会社製
商品名「テクノセル１００４」である。この繊維は、ア
スファルト混合物のアスファルト中に均一に分散するた
め、アスファルト混合物の耐流動性、耐磨耗性を改善す
ることができる。竹のセルロース繊維の性状は、灰色の
外観を有し、繊維の長さ３２〜８００μm、水分約６
％、ｐＨ７.０（５％水溶液）であり、アスファルト混
合物に加える濃度は０.０５〜１.０％であり、好ましく
は０.１〜０.４％である。０.０５％以下であると耐流
動性、耐磨耗性の効果が出ず、１.０％以上であると効
果は同等になる。本明細書では百分率は重量基準であ
る。Bamboo cellulose fibers and, if necessary, hydrophilic particles and hydrophobic porous particles are mixed with the dolomite reaction product and used as a road surface antifreezing agent. An environmentally harmless bamboo cellulose fiber is, for example, "Technocell 1004" manufactured by M & E Co., Ltd. Since this fiber is uniformly dispersed in the asphalt of the asphalt mixture, the flow resistance and abrasion resistance of the asphalt mixture can be improved. The properties of bamboo cellulose fibers have a gray appearance, the length of the fibers is 32-800 μm, and the water content is about 6
%, PH 7.0 (5% aqueous solution), and the concentration added to the asphalt mixture is 0.05 to 1.0%, preferably 0.1 to 0.4%. If it is 0.05% or less, the effects of fluidity and wear resistance are not exhibited, and if it is 1.0% or more, the effects are equal. As used herein, percentages are by weight.
【００１３】本発明の実施の形態では、石英粉末、溶岩
粉末、軽石粉末、発泡硝子粉末から選択された１種又は
２種以上の混合物である親水性粒子、焼成疎水性パーラ
イト粒子、膨張雲母粒子、シラスバルーン粒子、合成樹
脂多孔粒子から選択された１種又は２種以上の混合物で
ある疎水性多孔質粒子又はこれらの親水性粒子と疎水性
多孔質粒子を更に混合してもよい。疎水性多孔質粒子に
ドロマイト反応生成物を含有させてもよい。セメント又
はカーボン粉末から選択された１種又は２種以上の混合
物を混合してもよい。疎水性多孔質粒子の使用量は、ド
ロマイト反応生成物と親水性粒子１００重量部に対し
て、５〜７５重量部であり、５重量部に満たないと疎水
性が不足し、ドロマイト反応生成物の溶出が早くなり、
７５重量部を超えるとドロマイト反応生成物の溶出が困
難となる。In the embodiment of the present invention, hydrophilic particles, calcined hydrophobic perlite particles, expanded mica particles, which are one kind or a mixture of two or more kinds selected from quartz powder, lava powder, pumice powder, and foamed glass powder. The hydrophobic porous particles, which are one kind or a mixture of two or more kinds selected from Shirasu balloon particles and synthetic resin porous particles, or the hydrophilic particles and the hydrophobic porous particles may be further mixed. The hydrophobic porous particles may contain a dolomite reaction product. You may mix 1 type, or 2 or more types of mixture selected from cement or carbon powder. The amount of the hydrophobic porous particles used is 5 to 75 parts by weight based on 100 parts by weight of the dolomite reaction product and the hydrophilic particles. If the amount is less than 5 parts by weight, the hydrophobicity is insufficient, and the dolomite reaction product is obtained. Elutes faster,
If it exceeds 75 parts by weight, it becomes difficult to elute the dolomite reaction product.
【００１４】ドロマイト反応生成物に竹のセルロース繊
維、親水性粒子、疎水性多孔質粒子を混合した路面凍結
防止剤に、セメント、カーボン粉末から選択した１種又
は２種以上を混合して使用することもできる。路面凍結
防止剤の平均粒径は、０.２mm以下、好ましくは０.１mm
以下である。路面凍結防止剤をアスファルト混合物に混
合する場合、竹のセルロース繊維のため、均一化が容易
であり、空気の巻き込みもなく、舗装層の強度低下等を
招来しない。塩化ナトリウム、塩化カルシウム、酢酸カ
ルシウム、酢酸マグネシウム等を１種又は２種以上を前
記路面凍結防止剤に混合して使用することもできる。A road surface antifreezing agent obtained by mixing bamboo cellulose fibers, hydrophilic particles, and hydrophobic porous particles with the dolomite reaction product is used in admixture of one or more selected from cement and carbon powder. You can also The average particle size of the road surface antifreezing agent is 0.2 mm or less, preferably 0.1 mm
It is the following. When the road surface anti-freezing agent is mixed with the asphalt mixture, it is easy to make uniform because of the cellulose fibers of bamboo, there is no entrapment of air, and the strength of the pavement layer is not reduced. It is also possible to use one kind or two or more kinds of sodium chloride, calcium chloride, calcium acetate, magnesium acetate, etc. mixed with the road surface antifreezing agent.
【００１５】アスファルト混合物のアスファルトは、ス
トレートアスファルトを使用し、配合する骨材としては
特に制限はなく、砕石、砂、石粉等の通常のアスファル
ト舗装用に用いられる骨材を適用する事ができる。路面
凍結防止剤のアスファルト混合物への使用量は６〜８％
であり、竹のセルロース繊維のアスファルト混合物に加
える濃度は、０.０５〜１.０％であるから、アスファル
ト混合物への添加量は０.００３〜０.０８％である。ま
た、竹のセルロース繊維をアスファルト混合物に加える
と、アスファルトの使用量を１〜２％増加させる事がで
き、路面舗装用のアスファルト混合物の性能を向上させ
る事もできる。As the asphalt of the asphalt mixture, straight asphalt is used, and the aggregate to be mixed is not particularly limited, and aggregates used for ordinary asphalt pavement such as crushed stone, sand and stone powder can be applied. The amount of road surface antifreeze used in the asphalt mixture is 6-8%
Since the concentration of bamboo cellulose fiber added to the asphalt mixture is 0.05 to 1.0%, the addition amount to the asphalt mixture is 0.003 to 0.08%. Further, when the cellulose fiber of bamboo is added to the asphalt mixture, the amount of asphalt used can be increased by 1 to 2%, and the performance of the asphalt mixture for road paving can be improved.
【００１６】[0016]
【実施例】以下本発明の実施例について説明する。下記
の部は重量基準である。
［例１］平均粒径１０〜１５mmのドロマイト粒子１００
０部に１５％燐酸７０部と１０％酢酸４００部を徐々に
加えながら十分に混合し、１１０〜１５０℃の温度で３
０〜４０分間撹拌しながら反応させ、ドロマイト９５部
と燐酸１部・酢酸４部のドロマイト反応生成物を得た。
次に、得られたドロマイト反応生成物６０部、エムアン
ドイー株式会社製商品名「テクノセル１００４」と称す
る竹のセルロース繊維３部、溶岩粉末２０部、石英粉末
３部、焼成疎水性パーライト粒子２部、発泡ポリウレタ
ン粒子１５部を混合し、平均粒径０.１mmの路面凍結防
止剤を得た。その後、骨材８２.６部、石粉２.７部、路
面凍結防止剤８.０部、ストレートアスファルト６.７部
の配合割合で原料を混合しながら、加熱して、路面舗装
用アスファルト混合物の試験片を例１として作成した。EXAMPLES Examples of the present invention will be described below. The following parts are based on weight. [Example 1] 100 dolomite particles having an average particle size of 10 to 15 mm
To 0 part, 70 parts of 15% phosphoric acid and 400 parts of 10% acetic acid were gradually added and mixed well, and the mixture was mixed at a temperature of 110 to 150 ° C.
The reaction was carried out for 0 to 40 minutes while stirring to obtain a dolomite reaction product of 95 parts of dolomite and 1 part of phosphoric acid / 4 parts of acetic acid.
Next, 60 parts of the obtained dolomite reaction product, 3 parts of bamboo cellulose fiber called "Technocell 1004" manufactured by M & E Co., Ltd., 20 parts of lava powder, 3 parts of quartz powder, and calcined hydrophobic perlite particles 2 Parts and 15 parts of expanded polyurethane particles were mixed to obtain a road surface antifreezing agent having an average particle size of 0.1 mm. After that, while mixing the raw materials in a mixing ratio of 82.6 parts of aggregate, 2.7 parts of stone powder, 8.0 parts of road surface antifreezing agent and 6.7 parts of straight asphalt, the mixture is heated to prepare an asphalt mixture for road paving. A test piece was prepared as Example 1.
【００１７】［例２］平均粒径１０〜１５mmのドロマイ
ト粒子１０００部に１５％燐酸７０部と１０％プロピオ
ン酸４００部を徐々に加えながらよく混合し、１１０〜
１５０℃で３０〜４０分間撹拌しながら反応させ、ドロ
マイト９５部と燐酸１部・プロピオン酸４部のドロマイ
ト反応生成物を得た。次に、ドロマイト反応生成物６０
部、エムアンドイー株式会社製商品名「テクノセル１０
０４」と称する竹のセルロース繊維２部、溶岩粉末２０
部、石英粉末３部、焼成疎水性パーライト粒子２部、発
泡ポリウレタン粒子１５部からなる原料を混合し、平均
粒径０.１mmの路面凍結防止剤を得た。その後、骨材８
２.６部、石粉２.７部、路面凍結防止剤８.０部、スト
レートアスファルト６.７部を配合して、路面舗装用ア
スファルト混合物を例２として作成した。Example 2 To 1000 parts of dolomite particles having an average particle size of 10 to 15 mm, 70 parts of 15% phosphoric acid and 400 parts of 10% propionic acid were gradually added and mixed well.
The reaction was carried out at 150 ° C. for 30 to 40 minutes while stirring to obtain a dolomite reaction product containing 95 parts of dolomite, 1 part of phosphoric acid and 4 parts of propionic acid. Next, dolomite reaction product 60
Department, product name by M & E Co., Ltd. "Technocell 10
04 "bamboo cellulosic fiber 2 parts, lava powder 20
Parts, 3 parts of quartz powder, 2 parts of calcined hydrophobic perlite particles, and 15 parts of expanded polyurethane particles were mixed to obtain a road surface antifreezing agent having an average particle size of 0.1 mm. Then aggregate 8
An asphalt mixture for road paving was prepared as Example 2 by mixing 2.6 parts, stone powder 2.7 parts, road antifreeze 8.0 parts and straight asphalt 6.7 parts.
【００１８】［例３］平均粒径１０〜１５mmのドロマイ
ト粒子１０００部に１５％燐酸７０部と１０％酢酸４０
０部を徐々に加えながらよく混合し、１１０〜１５０℃
で３０〜４０分間撹拌しながら反応させ、ドロマイト９
５部と燐酸１部・酢酸４部のドロマイト反応生成物を得
た。次に、ドロマイト反応生成物６０部、溶岩粉末２０
部、石英粉末３部、焼成疎水性パーライト粒子２部、発
泡ポリウレタン粒子１５部を混合し、平均粒径０.１mm
の路面凍結防止剤を得た。その後、骨材８２.６部、石
粉２.７部、路面凍結防止剤８.０部、ストレートアスフ
ァルト６.７部を配合し、路面舗装用アスファルト混合
物を例３として作成した。[Example 3] 70 parts of 15% phosphoric acid and 40% of 10% acetic acid were added to 1000 parts of dolomite particles having an average particle size of 10 to 15 mm.
Mix well while gradually adding 0 part, 110 to 150 ° C
React for 30 to 40 minutes with stirring, and dolomite 9
A dolomite reaction product of 5 parts of phosphoric acid and 1 part of acetic acid was obtained. Next, 60 parts of dolomite reaction product and 20 lava powders
Parts, 3 parts of quartz powder, 2 parts of calcined hydrophobic perlite particles, 15 parts of expanded polyurethane particles, and an average particle size of 0.1 mm
To obtain a road surface antifreezing agent. Then, 82.6 parts of aggregate, 2.7 parts of stone powder, 8.0 parts of road surface antifreezing agent, and 6.7 parts of straight asphalt were mixed to prepare an asphalt mixture for road paving as Example 3.
【００１９】［例４］平均粒径１０〜１５mmのドロマイ
ト粒子１０００部に１５％燐酸７０部と１０％プロピオ
ン酸４００部を徐々に加えながらよく混合し、１１０〜
１５０℃で３０〜４０分間撹拌しながら反応させ、ドロ
マイト９５部と燐酸１部・プロピオン酸４部のドロマイ
ト反応生成物を得た。次に、ドロマイト反応生成物６０
部、溶岩粉末２０部、石英粉末３部、焼成疎水性パーラ
イト粒子２部、発泡ポリウレタン粒子１５部からなる原
料を配合して混合し、平均粒径０.１mmの路面凍結防止
剤を得た。その後、骨材８２.６部、石粉２.７部、路面
凍結防止剤８.０部、ストレートアスファルト６.７部を
配合して、路面舗装用アスファルト混合物を例４として
作成した。Example 4 To 1000 parts of dolomite particles having an average particle diameter of 10 to 15 mm, 70 parts of 15% phosphoric acid and 400 parts of 10% propionic acid were gradually added and mixed well, and 110-
The reaction was carried out at 150 ° C. for 30 to 40 minutes while stirring to obtain a dolomite reaction product containing 95 parts of dolomite, 1 part of phosphoric acid and 4 parts of propionic acid. Next, dolomite reaction product 60
Parts, 20 parts lava powder, 3 parts quartz powder, 2 parts calcined hydrophobic pearlite particles, and 15 parts expanded polyurethane particles were mixed and mixed to obtain a road surface antifreezing agent having an average particle size of 0.1 mm. Thereafter, 82.6 parts of aggregate, 2.7 parts of stone powder, 8.0 parts of a road surface antifreezing agent and 6.7 parts of straight asphalt were blended to prepare an asphalt mixture for road paving as Example 4.
【００２０】［例５］骨材８２.６部、石粉１０.７部、
ストレートアスファルト６.７部を配合して、路面舗装
用アスファルト混合物を作成した後、混合物を加熱、混
合し、路面舗装用アスファルト混合物の試験片を例５と
して作成した。[Example 5] 82.6 parts of aggregate, 10.7 parts of stone powder,
After mixing 6.7 parts of straight asphalt to prepare an asphalt mixture for road paving, the mixture was heated and mixed to prepare a test piece of the asphalt mixture for road paving as Example 5.
【００２１】［試験例］得られた例１〜例５の試験片に
ついて、マーシャル安定度試験、動的安定度試験、磨耗
（耐磨耗性、往復チェーンラベリング）試験、凍結防止
能試験を行った結果を表２に示す。動的安定度試験は、
ホイールトラッキングにより耐流動性を調査し、磨耗試
験は、往復チェーンラベリングにより耐磨耗性を調査す
るものである。凍結防止能試験は、英国製揺動装置によ
るスキッド抵抗テスター（ＳＲＴ）であり、抵抗値が大
きいほど凍結防止能が優れていることを示す。凍結防止
能試験では、−１５℃の温度下で水を噴霧し凍結、溶解
して表面状態を形成した後、凍結、溶解を４８回、９０
回、１３２回反復して、繰り返し回数３回の平均値でＳ
ＲＴ値を測定した。[Test Example] The obtained test pieces of Examples 1 to 5 were subjected to a Marshall stability test, a dynamic stability test, a wear (wear resistance, reciprocal chain labeling) test, and an antifreezing test. The results are shown in Table 2. The dynamic stability test
The fluid resistance is investigated by wheel tracking, and the abrasion test is conducted by reciprocating chain labeling. The antifreeze test is a skid resistance tester (SRT) using a swing device made in the UK, and the larger the resistance value, the better the antifreeze performance. In the antifreezing ability test, water was sprayed at a temperature of −15 ° C. to freeze and melt to form a surface state, followed by freezing and melting 48 times and 90 times.
, 132 times, and the average value of 3 times
The RT value was measured.
【００２２】[0022]
【表２】 [Table 2]
【００２３】例１及び例２では、それぞれマーシャル安
定度（kgf）１３４０及び１３２０で高く良く、動的安
定度（回/mm）２９９及び２９８で高く良く、磨耗量（c
m2）０.８０及び０.８５で低く良く、ＳＲＴ値７６.５
及び７５.５で高く良かった。例３及び例４では、それ
ぞれマーシャル安定度（kgf）１３５０及び１３１０で
高く良く、動的安定度（回/mm）２６０及び２６５で低
く悪く、磨耗量（cm2）１.２３及び１.２０で高く悪
く、ＳＲＴ値７６.３及び７５.０で高く良かった。例５
はマーシャル安定度（kgf）１１８０で低く普通、動的
安定度（回/mm）２９７で高く普通、磨耗量（cm2）０.
８８で低く普通、ＳＲＴ値１９.０で低く普通であっ
た。In Examples 1 and 2, the Marshall stability (kgf) 1340 and 1320 is high and the dynamic stability (times / mm) 299 and 298 is high, and the wear amount (c
m 2 ) Low and good at 0.80 and 0.85, SRT value 76.5
And 75.5 were high and good. In Examples 3 and 4, the Marshall stability (kgf) of 1350 and 1310 is high and the dynamic stability (times / mm) of 260 and 265 is low and poor, and the wear amount (cm 2 ) is 1.23 and 1.20. The SRT value was 76.3 and 75.0, and the value was good. Example 5
Is low at Marshall stability (kgf) 1180, normal at high dynamic stability (times / mm) 297, wear amount (cm 2 ) is 0.
It was 88 and low, and SRT value was 19.0 and low and normal.
【００２４】[0024]
【発明の効果】本発明は、ドロマイトと燐酸と有機カル
ボン酸とのドロマイト反応生成物に竹のセルロース繊維
を加えることにより、耐流動性及び耐磨耗性に優れ、
氷、雪が路面表面に付着させない路面舗装用アスファル
ト混合物を得ることができ、特公平５−８５５９１号公
報に開示された路面凍結防止剤を改良することができ
る。INDUSTRIAL APPLICABILITY The present invention has excellent fluidity resistance and abrasion resistance by adding bamboo cellulose fiber to the dolomite reaction product of dolomite, phosphoric acid and organic carboxylic acid.
It is possible to obtain an asphalt mixture for road pavement in which ice and snow do not adhere to the road surface, and the road surface antifreezing agent disclosed in Japanese Patent Publication No. 5-85591 can be improved.
フロントページの続き (56)参考文献 特開 平２−283782（ＪＰ，Ａ) 特開 平５−112724（ＪＰ，Ａ) 特開 昭49−48718（ＪＰ，Ａ) 特開 平８−134430（ＪＰ，Ａ) 特開 昭59−196369（ＪＰ，Ａ) 特開 平７−314417（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 95/00 C09K 3/00 102 C09K 3/18 Continuation of front page (56) Reference JP-A-2-283782 (JP, A) JP-A-5-112724 (JP, A) JP-A-49-48718 (JP, A) JP-A-8-134430 (JP , A) JP 59-196369 (JP, A) JP 7-314417 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) C08L 95/00 C09K 3/00 102 C09K 3/18
Claims (5)
とを反応させてドロマイト反応生成物を得る工程と、 ドロマイト反応生成物と、竹のセルロース繊維とを混合
して路面凍結防止剤を得る工程と、 路面凍結防止剤と、アスファルトと、骨材とを混合し
て、竹のセルロース繊維を０.０５〜１.０%含有するア
スファルト混合物を得る工程とを含むことを特徴とする
道路舗装用アスファルト混合物の製法。1. A step of reacting dolomite, phosphoric acid, and an organic carboxylic acid to obtain a dolomite reaction product, and a step of mixing the dolomite reaction product and bamboo cellulose fiber to obtain a road surface antifreezing agent And a road surface anti-freezing agent, asphalt, and an aggregate to obtain an asphalt mixture containing 0.05 to 1.0% of bamboo cellulosic fibers. Asphalt mixture manufacturing method.
末、溶岩粉末、軽石粉末、発泡硝子粉末から選択された
１種又は２種以上の混合物である親水性粒子を混合する
工程を含む請求項１に記載の道路舗装用アスファルト混
合物の製法。2. The step of obtaining a road surface antifreezing agent includes a step of mixing hydrophilic particles which are one kind or a mixture of two or more kinds selected from quartz powder, lava powder, pumice powder and foam glass powder. Item 1. A method for producing an asphalt mixture for road paving according to Item 1.
性パーライト粒子、膨張雲母粒子、シラスバルーン粒
子、合成樹脂多孔粒子から選択された１種又は２種以上
の混合物である疎水性多孔質粒子を混合する工程を含む
請求項１に記載の道路舗装用アスファルト混合物の製
法。3. The step of obtaining a road surface antifreezing agent is a hydrophobic porous material which is one kind or a mixture of two or more kinds selected from calcined hydrophobic perlite particles, expanded mica particles, shirasu balloon particles and synthetic resin porous particles. The method for producing an asphalt mixture for road paving according to claim 1, comprising a step of mixing particles.
物を含有させる工程を含む請求項３に記載の道路舗装用
アスファルト混合物の製法。4. The method for producing an asphalt mixture for road paving according to claim 3, which comprises a step of incorporating a dolomite reaction product into the hydrophobic porous particles.
粉末から選択した１種又は２種以上を混合する工程を含
む請求項１に記載の道路舗装用アスファルト混合物の製
法。5. The method for producing an asphalt mixture for road paving according to claim 1, comprising a step of mixing one or more selected from cement and carbon powder with the road surface antifreezing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33875998A JP3490918B2 (en) | 1998-11-30 | 1998-11-30 | Preparation of asphalt mixture for road pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33875998A JP3490918B2 (en) | 1998-11-30 | 1998-11-30 | Preparation of asphalt mixture for road pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000160144A JP2000160144A (en) | 2000-06-13 |
| JP3490918B2 true JP3490918B2 (en) | 2004-01-26 |
Family
ID=18321198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33875998A Expired - Fee Related JP3490918B2 (en) | 1998-11-30 | 1998-11-30 | Preparation of asphalt mixture for road pavement |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010045942A1 (en) * | 2010-09-21 | 2011-12-15 | J. Rettenmaier & Söhne Gmbh + Co. Kg | Scattering- and deicing-agents comprise at least partially cellulose-containing materials and additional components comprising salt or other chemicals including e.g. sodium chloride, potassium chloride, ethylene glycol or sodium formate |
| CN105086943B (en) * | 2015-09-29 | 2017-12-12 | 邳州高新区生物医药研究院有限公司 | A kind of preparation method of bamboo-carbon fibre Snow Agent |
| JP6373917B2 (en) * | 2016-09-01 | 2018-08-15 | 第一工業製薬株式会社 | Freezing inhibitor |
-
1998
- 1998-11-30 JP JP33875998A patent/JP3490918B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2000160144A (en) | 2000-06-13 |
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