JP2003221263A - Ceramic aggregate - Google Patents

Ceramic aggregate

Info

Publication number
JP2003221263A
JP2003221263A JP2002021730A JP2002021730A JP2003221263A JP 2003221263 A JP2003221263 A JP 2003221263A JP 2002021730 A JP2002021730 A JP 2002021730A JP 2002021730 A JP2002021730 A JP 2002021730A JP 2003221263 A JP2003221263 A JP 2003221263A
Authority
JP
Japan
Prior art keywords
asphalt
aggregate
porcelain
acid
porcelain aggregate
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.)
Pending
Application number
JP2002021730A
Other languages
Japanese (ja)
Inventor
Ikuo Watanabe
郁夫 渡邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Electric Power Co Inc
Original Assignee
Kansai Electric Power Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kansai Electric Power Co Inc filed Critical Kansai Electric Power Co Inc
Priority to JP2002021730A priority Critical patent/JP2003221263A/en
Publication of JP2003221263A publication Critical patent/JP2003221263A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Road Paving Structures (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceramic aggregate improved in separation resistance when used as an aggregate for asphalt pavement bodies, etc. <P>SOLUTION: This ceramic aggregate is characterized in that it is surface treated with an acid then surface treated with asphalt coating. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、アスファルト舗装
体等の骨材成分として使用する磁器骨材に関し、詳しく
は剥離抵抗性の向上した磁器骨材に関する。TECHNICAL FIELD The present invention relates to a porcelain aggregate used as an aggregate component of an asphalt pavement or the like, and more particularly to a porcelain aggregate having improved peel resistance.

【０００２】[0002]

【従来の技術】道路用などのアスファルト舗装体は、骨
材とアスファルトで主要部を構成している。従来、骨材
成分としては石粉、砂、砂利、砕石などが多く使用され
ていた。2. Description of the Related Art An asphalt pavement for roads and the like mainly comprises aggregate and asphalt. Heretofore, stone powder, sand, gravel, crushed stone, and the like have been widely used as aggregate components.

【０００３】アスファルト舗装体は、使用されるに従っ
て磨耗する。特に、冬季にはタイヤチェーンなどによる
擦り減りによりわだち掘れが生じ、また、夏季には舗装
表面温度が６０℃程度まで上昇してアスファルト舗装体
が軟化することによりわだち掘れが生じ、大がりな補修
工事が必要となる。Asphalt pavements wear out as they are used. Especially in the winter, rutting occurs due to abrasion by tire chains, etc., and in the summer, the asphalt pavement softens as the pavement surface temperature rises up to about 60 ° C, resulting in large rutting, which requires extensive repairs. Construction is required.

【０００４】アスファルト舗装体の耐磨耗性を向上する
ために、骨材成分として磁器骨材を使用したアスファル
ト舗装体が提供されている。磁器骨材は、高い硬度と耐
磨耗性を有するため、骨材として使用するとアスファル
ト舗装体の耐磨耗性が向上する。特に、使用済みの電力
用碍子を粉砕するなどしてリサイクルした磁器骨材は、
電力用碍子がシリカ、アルミナを主成分とし、高温で焼
き上げた磁器であるため、高い硬度と耐磨耗性を有す
る。また、電力用碍子などの白色の磁器は、アスファル
トの表面に露出すると、アスファルト舗装体が白色を帯
びた明色となる。このため、例えば、夏季の炎天下での
日射を反射して、舗装体表面温度の上昇を抑制し、アス
ファルト舗装体の軟化によるわだち掘れを防止し、ま
た、トンネル内などで安全性を高める目的で使用するの
にも適している。さらに、磁器骨材は、電力碍子など本
来の用途で使用済みのものをリサイクルできるため、廃
棄性やコスト性に優れて、省資源かつ経済的であり、環
境問題の面からも好ましく使用される。In order to improve the wear resistance of the asphalt pavement, there is provided an asphalt pavement using porcelain aggregate as an aggregate component. Since porcelain aggregate has high hardness and abrasion resistance, the abrasion resistance of the asphalt pavement is improved when it is used as an aggregate. In particular, porcelain aggregate recycled by crushing used power insulators
The power insulator has silica and alumina as the main components and is a porcelain fired at high temperature, so it has high hardness and wear resistance. Further, when a white porcelain such as an insulator for electric power is exposed on the surface of the asphalt, the asphalt pavement becomes a white and bright color. Therefore, for example, in order to reflect the sunlight in the hot summer in the summer, suppress the rise in the surface temperature of the pavement, prevent rutting due to softening of the asphalt pavement, and also to improve safety in tunnels, etc. Also suitable for use. Further, since the porcelain aggregate can be recycled after it has been used for its original purpose such as a power insulator, it is excellent in disposability and cost, is resource-saving and economical, and is preferably used also in terms of environmental problems. .

【０００５】しかしながら、磁器骨材は、アスファルト
が剥離しやすく、すなわち、剥離抵抗性に劣るという問
題点がある。従って、単独では道路舗装用の剥離基準を
満たせず、接着力の強い高粘度バインダーをアスファル
ト舗装体に混合させたり、接着力の強い人造セラミック
骨材を混合して剥離を抑えている。しかし、これらは、
通常の舗装用原料より高価であることから、コストの点
で問題がある。However, the porcelain aggregate has a problem that asphalt is easily peeled off, that is, it is inferior in peeling resistance. Therefore, by itself, the peeling standard for road pavement is not satisfied, and a high-viscosity binder having a strong adhesive force is mixed with the asphalt pavement or an artificial ceramic aggregate having a strong adhesive force is mixed to suppress the peeling. But these are
Since it is more expensive than ordinary pavement materials, there is a problem in terms of cost.

【０００６】上記目的を達成するため、磁器骨材を酸で
処理することにより、剥離抵抗性が向上することを見出
し、本発明者らは、先に提案した。In order to achieve the above object, it was found that by treating the porcelain aggregate with an acid, the peeling resistance is improved, and the present inventors have previously proposed.

【０００７】本発明者らは、上記目的に加え、長期の耐
候性（長期間の剥離抵抗性）が向上をも達成するため鋭
意検討した結果、酸で表面処理した後、さらにアスファ
ルトで表面をコーティング処理したことにより、長期の
耐候性（長期間の剥離抵抗性）が向上することを見出
し、本発明を完成した。In addition to the above-mentioned objects, the inventors of the present invention have conducted extensive studies in order to achieve improvement in long-term weather resistance (long-term peeling resistance). As a result, after surface treatment with acid, the surface was further treated with asphalt. It has been found that the coating treatment improves long-term weather resistance (long-term peel resistance), and completed the present invention.

【０００８】すなわち、本発明は、酸で表面処理した
後、さらにアスファルトで表面をコーティング処理して
なることを特徴とする磁器骨材である。That is, the present invention is a porcelain aggregate characterized by being surface-treated with an acid and further coated with asphalt.

【０００９】[0009]

【発明の実施の形態】本発明において、磁器骨材とは、
磁器製品の粉砕物であり、使用済みの電力用碍子、るつ
ぼなどの磁器製品を粉砕するなどして用いることがで
き、また、食器、タイル、便器、舗装用骨材などのセラ
ミック製品、シリカおよび／またはアルミナを主成分と
する磁器骨材も含まれる。好ましくは、高い硬度と耐磨
耗性を有するものがよい。特に好ましくは電力用碍子の
粉砕物、シリカおよび／またはアルミナを主成分とする
磁器骨材から選ばれる磁器骨材が好ましい。特に使用済
みの電力用碍子を用いることにより、碍子の廃棄および
骨材の原料調達の必要がなくなり、コスト性や環境性の
点からも好ましい。なお、電力用碍子以外の磁器製品か
らなる磁器骨材を含有させることはもちろん可能であ
る。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, porcelain aggregate means
It is a crushed product of porcelain products, which can be used by crushing used porcelain products such as used power insulators and crucibles, and ceramic products such as tableware, tiles, toilet bowls, paving aggregates, silica and Also included are porcelain aggregates containing alumina as a main component. Preferably, it has high hardness and abrasion resistance. Particularly preferred is a pulverized product of an insulator for electric power, and a porcelain aggregate selected from porcelain aggregates containing silica and / or alumina as a main component. In particular, by using the used power insulator, it is not necessary to dispose the insulator and to procure the raw material for the aggregate, which is preferable in terms of cost and environment. Incidentally, it is of course possible to contain a porcelain aggregate made of a porcelain product other than the power insulator.

【００１０】本発明の磁器骨材は、まず酸で表面処理さ
れる。The porcelain aggregate of the present invention is first surface-treated with acid.

【００１１】本発明に用いられる酸としては、例えば、
ギ酸、酢酸、トリフルオロ酢酸、マレイン酸、酒石酸、
メタンスルホン酸、ベンゼンスルホン酸、トルエンスル
ホン酸などの有機酸、塩酸、臭化水素酸、ヨウ化水素
酸、フッ化水素酸、硝酸、硫酸、リン酸などの無機酸な
どが挙げられる。これらの中でも、塩酸、硝酸、酢酸お
よび硫酸が好ましく、特に硫酸が好ましい。Examples of the acid used in the present invention include:
Formic acid, acetic acid, trifluoroacetic acid, maleic acid, tartaric acid,
Examples thereof include organic acids such as methanesulfonic acid, benzenesulfonic acid and toluenesulfonic acid, and inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, hydrofluoric acid, nitric acid, sulfuric acid and phosphoric acid. Among these, hydrochloric acid, nitric acid, acetic acid and sulfuric acid are preferable, and sulfuric acid is particularly preferable.

【００１２】酸は水溶液の状態で用いられる。酸の水溶
液の温度は、好ましくは、５〜４０℃、さらに好ましく
は、５〜２５℃とするのがよい。酸の水溶液の温度が上
記範囲外であると、酸で処理した磁器骨材の剥離抵抗性
向上が十分でない。The acid is used in the form of an aqueous solution. The temperature of the acid aqueous solution is preferably 5 to 40 ° C., and more preferably 5 to 25 ° C. If the temperature of the acid aqueous solution is out of the above range, the peel resistance of the acid-treated porcelain aggregate is not sufficiently improved.

【００１３】酸の水溶液の濃度は、好ましくは、１〜３
０重量％、さらに好ましくは、５〜２０重量％とするの
がよい。酸の水溶液の濃度が上記範囲外であると、酸で
処理した磁器骨材の剥離抵抗性向上が得られ難い。The concentration of the aqueous acid solution is preferably 1 to 3.
The amount is preferably 0% by weight, more preferably 5 to 20% by weight. If the concentration of the acid aqueous solution is out of the above range, it is difficult to improve the peel resistance of the acid-treated porcelain aggregate.

【００１４】本発明において、酸による表面処理は、酸
の水溶液中に、表面処理対象の磁器骨材を浸漬し、必要
に応じて攪拌後、乾燥する。なお、酸による表面処理
は、後述の実施例に準ずる方法で実施できる。攪拌は通
常の攪拌装置によって行うことができる。攪拌条件は、
磁器骨材が破損しない程度であれば特に限定されない。In the present invention, in the surface treatment with an acid, the porcelain aggregate to be surface-treated is immersed in an aqueous solution of an acid, and if necessary, stirred and dried. The surface treatment with acid can be carried out by a method according to the examples described later. Stirring can be performed by an ordinary stirring device. The stirring conditions are
There is no particular limitation as long as the porcelain aggregate is not damaged.

【００１５】酸の水溶液中において攪拌する時間は、好
ましくは、１０〜１６８時間、さらに好ましくは、２４
〜７２時間とするのがよい。The stirring time in the aqueous acid solution is preferably 10 to 168 hours, more preferably 24 hours.
~ 72 hours is recommended.

【００１６】酸の水溶液の量は、磁器骨材が浸漬され、
磁器骨材を酸で処理するのに十分な量であり、例えば、
磁器骨材１．０重量部に対して、好ましくは、酸の水溶
液０．５〜２０重量部、さらに好ましくは、１〜１５重
量部とするのがよい。酸の水溶液の量が多すぎると、効
率や経済性が低下しやすく、少なすぎると均一な処理が
しにくい。表面処理対象の磁器骨材は酸の水溶液に浸漬
後、酸の水溶液から引き上げ、あるいは酸の水溶液を除
去し、必要に応じて水により洗浄して磁器骨材表面に付
着した過剰な酸の水溶液を除去する。その後、乾燥機等
を用いるなどして乾燥し、表面処理が完了する。洗浄や
乾燥の条件（温度、時間など）は、特に限定されない。The amount of the aqueous acid solution is such that the porcelain aggregate is dipped,
An amount sufficient to treat the porcelain aggregate with acid, for example,
The amount of the porcelain aggregate is 1.0 to 20 parts by weight, preferably 0.5 to 20 parts by weight, more preferably 1 to 15 parts by weight. If the amount of the acid aqueous solution is too large, the efficiency and economical efficiency are likely to decrease, and if it is too small, uniform treatment is difficult. The porcelain aggregate to be surface-treated is immersed in an aqueous acid solution, then pulled up from the aqueous acid solution, or the aqueous acid solution is removed, and if necessary, washed with water to remove the excess aqueous acid solution adhered to the porcelain aggregate surface. To remove. Then, the surface treatment is completed by drying using a dryer or the like. Washing and drying conditions (temperature, time, etc.) are not particularly limited.

【００１７】本発明において、磁器骨材は、酸で表面処
理した後、さらにアスファルトで表面をコーティング処
理される。In the present invention, the porcelain aggregate is surface-treated with an acid and then further coated with asphalt.

【００１８】アスファルトの種類は特に限定されず、ス
トレートアスファルト、改質アスファルトＩＩ型、高粘
度改質アスファルトなど挙げられる。The type of asphalt is not particularly limited, and examples thereof include straight asphalt, modified asphalt type II, and high-viscosity modified asphalt.

【００１９】アスファルトによる磁器骨材のコーティン
グ処理は、有機溶剤でアスファルトを希釈した溶液に磁
器骨材を噴霧、塗布又は浸漬することにより行い、好ま
しくは噴霧するのがよい。The coating treatment of the porcelain aggregate with asphalt is carried out by spraying, coating or immersing the porcelain aggregate in a solution prepared by diluting the asphalt with an organic solvent, preferably spraying.

【００２０】有機溶剤としては、ベンゼン、トルエン等
の溶媒や、灯油や重油のような混合溶媒が用いられる。
好ましくは品質のバラツキを避けるために、灯油や重油
のような混合溶媒ではなく、ベンゼン、トルエン等の溶
媒を用いるのが好ましく、ベンゼンを用いるのがさらに
好ましい。As the organic solvent, a solvent such as benzene or toluene, or a mixed solvent such as kerosene or heavy oil is used.
In order to avoid quality variations, it is preferable to use a solvent such as benzene or toluene instead of a mixed solvent such as kerosene or heavy oil, and it is more preferable to use benzene.

【００２１】有機溶剤でアスファルトを希釈した溶液の
温度は、好ましくは６０〜８０℃、さらに好ましくは７
０℃とするのがよい。有機溶剤でアスファルトを希釈し
た溶液の温度が上記範囲外であると、有機溶剤でアスフ
ァルトを希釈した溶液で処理した磁器骨材の剥離抵抗性
向上が十分でない。The temperature of the solution of asphalt diluted with an organic solvent is preferably 60 to 80 ° C., more preferably 7
It is good to set it to 0 ° C. If the temperature of the solution in which the asphalt is diluted with the organic solvent is out of the above range, the peel resistance of the porcelain aggregate treated with the solution in which the asphalt is diluted with the organic solvent is not sufficiently improved.

【００２２】有機溶剤でアスファルトを希釈した溶液の
濃度は、好ましくは２０〜３０重量％、さらに好ましく
は３０重量％とするのがよい。有機溶剤でアスファルト
を希釈した溶液の濃度が上記範囲外であると、有機溶剤
でアスファルトを希釈した溶液で処理した磁器骨材の剥
離抵抗性向上が十分でない。The concentration of the solution of asphalt diluted with an organic solvent is preferably 20 to 30% by weight, more preferably 30% by weight. If the concentration of the solution in which asphalt is diluted with an organic solvent is out of the above range, the peel resistance of the porcelain aggregate treated with the solution in which asphalt is diluted with an organic solvent is not sufficiently improved.

【００２３】本発明において、有機溶剤でアスファルト
を希釈した溶液によるコーティング処理は、有機溶剤で
アスファルトを希釈した溶液中に、コーティング処理対
象の磁器骨材を噴霧、塗布又は浸漬し、必要に応じて攪
拌後、乾燥する。なお、有機溶剤でアスファルトを希釈
した溶液によるコーティング処理は、後述の実施例に準
ずる方法で実施できる。攪拌は通常の攪拌装置によって
行うことができる。攪拌条件は、磁器骨材が破損しない
程度であれば特に限定されない。In the present invention, the coating treatment with a solution in which asphalt is diluted with an organic solvent is carried out by spraying, coating or immersing the porcelain aggregate to be coated in a solution in which the asphalt is diluted with an organic solvent. After stirring, it is dried. The coating treatment with a solution obtained by diluting asphalt with an organic solvent can be carried out by a method according to the examples described later. Stirring can be performed by an ordinary stirring device. The stirring conditions are not particularly limited as long as the porcelain aggregate is not damaged.

【００２４】アスファルトによる磁器骨材のコーティン
グ処理を浸漬により行う場合、有機溶剤でアスファルト
を希釈した溶液中において攪拌する時間は、好ましく
は、ベンゼンを使用する場合１〜２時間、灯油の場合４
〜５時間、重油の場合６〜７時間、さらに好ましくは、
ベンゼンで１時間とするのがよい。有機溶剤でアスファ
ルトを希釈した溶液の量は、磁器骨材が浸漬され、磁器
骨材を酸で処理するのに十分な量である。アスファルト
を希釈した溶液の量が多すぎると、効率や経済性が低下
しやすく、少なすぎると均一な処理がしにくい。コーテ
ィング処理対象の磁器骨材は有機溶剤でアスファルトを
希釈した溶液に浸漬後、有機溶剤でアスファルトを希釈
した溶液から引き上げる。その後、乾燥機等を用いるな
どして乾燥し、コーティング処理が完了する。乾燥の条
件（温度、時間など）は、特に限定されない。When the coating treatment of the porcelain aggregate with asphalt is carried out by immersion, the stirring time in a solution in which the asphalt is diluted with an organic solvent is preferably 1 to 2 hours when benzene is used and 4 hours when kerosene is used.
~ 5 hours, for heavy oil 6-7 hours, more preferably
It is recommended to use benzene for 1 hour. The amount of the solution obtained by diluting asphalt with an organic solvent is an amount sufficient for immersing the porcelain aggregate and treating the porcelain aggregate with an acid. If the amount of the asphalt-diluted solution is too large, the efficiency and economical efficiency are likely to decrease, and if it is too small, uniform treatment is difficult. The porcelain aggregate to be coated is immersed in a solution of asphalt diluted with an organic solvent, and then pulled up from the solution of asphalt diluted with an organic solvent. Then, it is dried by using a dryer or the like to complete the coating process. The drying conditions (temperature, time, etc.) are not particularly limited.

【００２５】本発明の磁器骨材は、剥離抵抗性に優れる
ため、骨材とアスファルトで主要部を構成してなるアス
ファルト舗装体の骨材成分として、好適に使用でき、本
発明の磁器骨材を使用したアスファルト舗装体は、耐摩
耗性などの耐久性に優れる。Since the porcelain aggregate of the present invention is excellent in peeling resistance, it can be suitably used as an aggregate component of an asphalt pavement having a main part composed of the aggregate and asphalt. The asphalt pavement using is excellent in durability such as abrasion resistance.

【００２６】上記アスファルト舗装体を構成するアスフ
ァルトの種類は特に限定されず、ストレートアスファル
ト、改質アスファルトＩＩ型、高粘度改質アスファルト
など挙げられるが、本発明の磁器骨材は剥離抵抗性に優
れ、特に剥離しやすいストレートアスファルトを用いた
場合でも、カットバックアスファルトでコーティング処
理をすることにより、剥離が軽減し、耐久性が向上する
ため、耐久性とコスト性のいずれも向上させることがで
きる。The type of asphalt that constitutes the above-mentioned asphalt pavement is not particularly limited, and examples thereof include straight asphalt, modified asphalt type II, and high-viscosity modified asphalt. The porcelain aggregate of the present invention is excellent in peel resistance. Even when a straight asphalt that is particularly easy to peel off is used, the coating treatment with the cutback asphalt reduces peeling and improves durability, so that both durability and cost can be improved.

【００２７】上記アスファルト舗装体を構成するアスフ
ァルトと表面のコーティング処理に用いるアスファルト
は、ストレートアスファルトが良いが、異なっていても
よい。The asphalt constituting the above-mentioned asphalt pavement and the asphalt used for the surface coating treatment are preferably straight asphalt, but may be different.

【００２８】なお、上記アスファルト舗装体には、本発
明の磁器骨材以外に、石粉、砂、砂利、砕石などの通常
用いられる骨材を所定割合で含有させてもよく、さらに
本発明の作用を阻害しない範囲で他の成分を含有させて
もよい。In addition to the porcelain aggregate of the present invention, the above-mentioned asphalt pavement may contain a commonly used aggregate such as stone powder, sand, gravel, and crushed stone in a predetermined ratio. Other components may be contained within a range that does not inhibit the above.

【００２９】次に、試験例および実施例を用いて本発明
を更に詳細に説明するが、本発明はこれらに限定される
ものではない。 試験例 １．試験方法 （１）剥離抵抗性 舗装試験法便覧（社団法人日本道路協会 昭和６３年１
１月）の粗骨材の剥離抵抗性試験方法（ＪＰＩ−５Ｓ−
２７準拠）に準じて、下記の方法で行った。金属製ビー
カーに、溶融した舗装用石油アスファルト（日本道路協
会規格 針入度６０〜８０）（５．５ｇ）を投入し、温
度１５０℃とした。次いで、実施例１及び比較例１の磁
器骨材（１００ｇ）を投入し、へらで１．５分間混合
し、磁器骨材を完全にアスファルトで被覆した。アスフ
ァルトで被覆した磁器骨材のうち２０個を、へらで取り
出し、ガラス板上に重ならないように置き、室温まで放
冷した。恒温水槽に、水を投入し、温度８０℃とした。
次いで、水の中へ、上記で得られたアスファルトで被覆
した磁器骨材を載せたガラス板を浸漬し、３０分間保持
した後、このガラス板を水中から取り出し、室温の水が
入った平らな容器に移した。平らな容器に移したガラス
板上のアスファルトで被覆した磁器骨材について、水面
上から観察し、表面のアスファルトの剥離している面積
を目視で評価し、全表面積に対する割合を剥離面積率
（％）として、平均値を算出した（ｎ＝２０）。Next, the present invention will be described in more detail with reference to test examples and examples, but the present invention is not limited thereto. Test Example 1. Test method (1) Peeling resistance pavement test method handbook (Japan Road Association, 1988 1
January) Peeling resistance test method of coarse aggregate (JPI-5S-
According to No. 27), the following method was used. Melted petroleum asphalt for paving (Japan Road Association standard penetration 60 to 80) (5.5 g) was put into a metal beaker, and the temperature was set to 150 ° C. Then, the porcelain aggregates of Example 1 and Comparative Example 1 (100 g) were charged and mixed with a spatula for 1.5 minutes to completely cover the porcelain aggregate with asphalt. Twenty of the asphalt-coated porcelain aggregates were taken out with a spatula, placed on a glass plate so as not to overlap, and allowed to cool to room temperature. Water was added to a constant temperature water tank to a temperature of 80 ° C.
Then, the glass plate on which the porcelain aggregate coated with the asphalt obtained above was placed was immersed in water and held for 30 minutes, and then the glass plate was taken out of water and flattened with water at room temperature. Transferred to container. For asphalt-coated porcelain aggregate on a glass plate that was transferred to a flat container, observe it from the water surface, visually evaluate the area where the asphalt is peeling off, and evaluate the ratio to the total surface area as the peeling area ratio (% ), The average value was calculated (n = 20).

【００３０】（２）耐候性 実施例２の磁器骨材について、ＪＩＳ Ｄ０２０５ １
９８７ 自動車部品の耐候性試験方法の５．４ 促進耐
候性試験（ＷＡＮ−１Ｓ）に準拠して、耐候性試験を、
スガ試験機製のサンシャインカーボンアーク灯式耐候性
試験機を用いて行った。アスファルトで処理の直後、上
記耐候性試験の経過が３ヶ月後、および６ヶ月後のサン
プルについて剥離抵抗性を上記試験（１）と同様にして
評価した。(2) Weather resistance Regarding the porcelain aggregate of Example 2, JIS D02051
987 A weather resistance test is conducted according to the 5.4 accelerated weather resistance test (WAN-1S) of the weather resistance test method for automobile parts.
The test was performed using a sunshine carbon arc lamp type weather resistance tester manufactured by Suga Test Machine. Immediately after the treatment with asphalt, the samples after 3 months and 6 months of the above weather resistance test were evaluated for peel resistance in the same manner as in the above test (1).

【００３１】上記試験結果を表１、２に示す。表１、２
より明らかなように、実施例では、剥離抵抗性及びその
耐候性が大きく向上していることが解る。The test results are shown in Tables 1 and 2. Tables 1 and 2
As is clearer, in the examples, it is understood that the peel resistance and the weather resistance thereof are greatly improved.

【００３２】[0032]

【実施例】実施例１ 使用済みの電力用碍子を粉砕機によって粉砕し、篩にか
けて、篩の目開きで１３〜２０ｍｍの大きさのものを
得、下記に示す硫酸処理及びアスファルト処理を行った
後、剥離抵抗性を上記の方法で試験し、結果を表１に示
した。 硫酸処理 攪拌器を取り付けた容量５００ｍｌのビーカーに、蒸留
水２００ｍｌを入れた後、濃硫酸２０ｍｌを投入し、温
度１０℃とした。次いで、上記で得られた篩の目開きで
１３〜５ｍｍの大きさの粉砕した使用済みの電力用碍子
（１４５ｇ）を投入し、温度１０℃で４８時間攪拌した
後、硫酸水溶液を流出により除去した。次いで、水（２
００ｇ）を投入し、室温で５分間攪拌した後、粉砕した
使用済みの電力用碍子を取り出し、得られた粉砕した使
用済みの電力用碍子について、２つに分け、３日間風乾
した。 硫酸処理後のアスファルト処理 攪拌機を有する溶解槽（鉄又はステンレス製）で、スト
レートアスファルト６０／８０（コスモ石油社製）を全
体量の３０重量％のベンゼンで希釈し、該希釈液を上記
で得られた碍子片に噴霧する。次いで、アスファルトの
液滴が落ちなくなってから、広げて水で冷却し、送風機
により４８時間風乾して磁器骨材とした。なお、温度は
１５〜１７℃となるようにした。Example 1 A used power insulator was crushed by a crusher and sieved to obtain a sieve having a size of 13 to 20 mm, and the sulfuric acid treatment and the asphalt treatment shown below were performed. Thereafter, the peel resistance was tested by the above method, and the results are shown in Table 1. A beaker with a capacity of 500 ml equipped with a sulfuric acid treatment stirrer was charged with 200 ml of distilled water and then with 20 ml of concentrated sulfuric acid to a temperature of 10 ° C. Then, after crushing the used power insulator (145 g) having a size of 13 to 5 mm by the opening of the sieve obtained above and stirring the mixture at a temperature of 10 ° C. for 48 hours, the sulfuric acid aqueous solution was removed by outflow. did. Then water (2
00 g) was added and the mixture was stirred at room temperature for 5 minutes, then the crushed used power insulator was taken out, and the obtained crushed used power insulator was divided into two and air-dried for 3 days. In a dissolution tank (made of iron or stainless steel) having an asphalt treatment stirrer after sulfuric acid treatment, straight asphalt 60/80 (manufactured by Cosmo Oil Co., Ltd.) was diluted with 30% by weight of the total amount of benzene to obtain the diluted solution as described above. Spray on the insulator pieces. Then, after the asphalt droplets stopped falling, the liquid was spread, cooled with water, and air-dried for 48 hours by a blower to obtain a porcelain aggregate. The temperature was set to 15 to 17 ° C.

【００３３】比較例１ アスファルト処理を行わずに、硫酸処理のみとする以外
は、実施例１と同様にして得られた磁器骨材の剥離抵抗
性を上記の方法で試験し、結果を表１に示した。Comparative Example 1 A porcelain aggregate obtained in the same manner as in Example 1 was tested for peeling resistance by the above-mentioned method except that asphalt treatment was not performed and only sulfuric acid treatment was performed. The results are shown in Table 1. It was shown to.

【００３４】[0034]

【発明の効果】本発明によれば、剥離抵抗性およびその
耐久性に優れた磁器骨材が得られ、単独でのアスファル
ト舗装体への使用が可能となり、コスト性が向上する。
特に、本発明は、磁器骨材表面を空気や紫外線から遮断
して酸処理効果（磁器骨材を酸で処理することにより、
向上した剥離抵抗性）を持続させるとともに、アスファ
ルトとの接着性が向上する。また、磁器骨材の表面をア
スファルトでコーティングすることにより、空気や紫外
線を遮断でき、長期間暴露しても劣化は認められない。EFFECTS OF THE INVENTION According to the present invention, a porcelain aggregate having excellent peeling resistance and durability can be obtained, which can be used alone in an asphalt pavement, and the cost efficiency is improved.
In particular, the present invention shields the surface of the porcelain aggregate from the air and ultraviolet rays to effect an acid treatment (by treating the porcelain aggregate with an acid,
Improved peel resistance) and the adhesion to asphalt is improved. Further, by coating the surface of the porcelain aggregate with asphalt, it is possible to block air and ultraviolet rays, and no deterioration is observed even after long-term exposure.

【表１】 [Table 1]

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 酸で表面処理した後、さらにアスファル
トで表面をコーティング処理してなることを特徴とする
磁器骨材。1. A porcelain aggregate which is obtained by surface-treating with an acid and then coating the surface with asphalt. 【請求項２】 アスファルトによる磁器骨材の前記コー
ティング処理は、磁器骨材に、有機溶剤でアスファルト
を希釈した溶液を噴霧すること又は該溶液に浸漬するこ
とにより行うことを特徴とする請求項１記載の磁器骨
材。2. The coating treatment of the porcelain aggregate with asphalt is performed by spraying or dipping the porcelain aggregate with a solution prepared by diluting asphalt with an organic solvent. Porcelain aggregate described. 【請求項３】 表面処理前の磁器骨材が、使用済みの電
力用碍子の粉砕物、シリカおよび／またはアルミナを主
成分とする磁器骨材から選ばれることを特徴とする請求
項１または２記載の磁器骨材。3. The porcelain aggregate before surface treatment is selected from a pulverized product of used power insulators and a porcelain aggregate mainly containing silica and / or alumina. Porcelain aggregate described. 【請求項４】 骨材成分とアスファルトで主要部を構成
したアスファルト舗装体の骨材成分であることを請求項
１乃至３のいずれか一項に記載の磁器骨材。4. The porcelain aggregate according to any one of claims 1 to 3, wherein the porcelain aggregate is an aggregate component of an asphalt pavement having a main portion composed of the aggregate component and asphalt. 【請求項５】 有機溶剤でアスファルトを希釈した溶液
のアスファルト濃度を、２０〜３０重量％とすることを
特徴とする請求項４に記載の磁器骨材。5. The porcelain aggregate according to claim 4, wherein the asphalt concentration of the solution obtained by diluting asphalt with an organic solvent is 20 to 30% by weight.
JP2002021730A 2002-01-30 2002-01-30 Ceramic aggregate Pending JP2003221263A (en)

Priority Applications (1)

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100831074B1 (en) * 2007-10-04 2008-05-22 (주)한동알앤씨 Suction of water rate reform recycling aggregate creative apparatus
KR20200028204A (en) * 2018-09-06 2020-03-16 안정호 Heat-shield road and paving method of the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100831074B1 (en) * 2007-10-04 2008-05-22 (주)한동알앤씨 Suction of water rate reform recycling aggregate creative apparatus
KR20200028204A (en) * 2018-09-06 2020-03-16 안정호 Heat-shield road and paving method of the same
KR102147901B1 (en) * 2018-09-06 2020-08-25 안정호 Heat-shield road and paving method of the same

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