JPS62246849A - Ceramic aggregate for road - Google Patents
Ceramic aggregate for roadInfo
- Publication number
- JPS62246849A JPS62246849A JP9188986A JP9188986A JPS62246849A JP S62246849 A JPS62246849 A JP S62246849A JP 9188986 A JP9188986 A JP 9188986A JP 9188986 A JP9188986 A JP 9188986A JP S62246849 A JPS62246849 A JP S62246849A
- Authority
- JP
- Japan
- Prior art keywords
- road
- silicon oxide
- boron oxide
- ceramic
- 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
Links
- 239000000919 ceramic Substances 0.000 title claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 28
- 229910052810 boron oxide Inorganic materials 0.000 claims description 26
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 26
- 238000010304 firing Methods 0.000 claims description 16
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 239000008188 pellet Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 description 15
- 239000004575 stone Substances 0.000 description 9
- 239000000155 melt Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000005388 borosilicate glass Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Paints Or Removers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、セラミック製の道路用骨材に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to ceramic road aggregate.
本発明の道路用骨材は、例えば舗装の際に用いる破砕石
材の代わりに使用することができ、あるいは横断歩道を
示す白線など、道路上の区画を示すためのものとして使
用することができる。The road aggregate of the present invention can be used, for example, in place of crushed stone used in paving, or can be used to indicate divisions on roads, such as white lines indicating crosswalks.
従来道路の舗装の際には、適当な大きさに破砕した石材
を用いて、これを例えばアスファルトなどに混ぜて使用
している。Conventionally, when paving roads, stones are crushed to an appropriate size and mixed with, for example, asphalt.
また横断歩道を示す場合など、道路上の区画を示すため
には、一般に白ペンキなどで路上に白線を描いている。Furthermore, to indicate sections on a road, such as when marking a crosswalk, white lines are generally drawn on the road using white paint.
上記従来技術の如く舗装用に破砕石材を用いた場合には
、道路の摩擦が激しいという問題がある。When crushed stone is used for paving as in the prior art described above, there is a problem in that the friction of the road is severe.
特に高速道路など車両の走行の激しい所にあっては、舗
装が短期間の間に摩擦してすり減ってしまい、その補修
に多大のコストや時間を要することになる。更に、降雪
地帯ではタイヤチェーンを巻いたり、あるいはスパイク
を打ったタイヤが用いられるが、このようなタイヤによ
り道路が削りとられ、これにより多量の塵埃が発生して
、新たな公害問題を生ぜしめている。特に自動車の轍の
部分の摩耗が極端で自動車走行方向に溝状となり、自動
車のハンドル操作に支障を来たし事故の原因となる。Particularly in areas where vehicles travel heavily, such as on expressways, the pavement is subject to friction and wear over a short period of time, requiring a great deal of cost and time to repair. Furthermore, in snowy regions, tires with tire chains or spikes are used, but these tires scrape up the road, which generates a large amount of dust, creating a new pollution problem. There is. Particularly, the wear of the ruts of a car is so extreme that it forms a groove in the direction of the car's travel, making it difficult to operate the car's steering wheel and causing an accident.
また白ペンキなどで横断歩道等を示す従来の技術では、
この塗装が剥がれ易く、これも短時間で繰り返し補修を
余儀なくされるという問題がある降雪地帯では、−冬が
過ぎると白線がすっかり消えてしまうことが通例であり
、再び白線を描き直さなければならない。In addition, conventional techniques for marking crosswalks with white paint, etc.
In snowy areas, where this paint peels off easily and requires repeated repairs in a short period of time, it is common for the white lines to completely disappear after winter, and they must be repainted again. .
本発明は、上記のような事情に鑑みてなされたもので、
舗装の際の道路用骨材として用いられる場合でも、ある
いは白線なとの代わりに区画を示すものとして用いられ
る場合でも、どのような場合であっても摩耗が小さく、
補修などの必要回数を低減することができる道路用骨材
を提供せんとするものである。The present invention was made in view of the above circumstances, and
Whether it is used as road aggregate for paving, or as a marker to mark divisions in place of white lines, it has minimal wear and tear in all cases.
It is an object of the present invention to provide a road aggregate that can reduce the number of necessary repairs.
本発明の道路用骨材は、酸化ケイ素と酸化ホウ素とを含
有する成形物を焼成して得たセラミック製のものであっ
て、このような本発明の道路用骨材を用いることにより
上記問題点を解決することができる。The road aggregate of the present invention is made of ceramic obtained by firing a molded product containing silicon oxide and boron oxide, and by using the road aggregate of the present invention, the above problems can be solved. points can be resolved.
上記本発明の道路用骨材は、きわめて緻密かつ機械的強
度がおおきく、従って摩耗のきわめて少ない道路用材と
して用いることができる。The road aggregate of the present invention is extremely dense and has high mechanical strength, and therefore can be used as a road material with extremely low wear.
例えば舗装用の石材の代わりに、本発明の道路用骨材を
適宜の大きさ、例えばペレット状にして使用すると、き
わめて道路の摩擦の少ない舗装が達成される。また、白
色乃至はその他適宜の色を施すなどして、道路区画用（
例えば横断歩道の明示用）に用いることができ、これは
白ペンキなどと異なり、摩耗してすぐ消えてしまうなど
ということがなく、有利である。道路に埋めこんで使用
すれば、非常な長期間にわたって使用できる。For example, when the road aggregate of the present invention is used in an appropriate size, for example, in the form of pellets, instead of paving stones, pavement with extremely low friction can be achieved. In addition, by applying white or other appropriate colors, road sections (
For example, it can be used to mark pedestrian crossings), and unlike white paint, it does not wear out and disappear quickly, which is advantageous. If it is buried in the road, it can be used for a very long time.
本発明の道路用骨材が緻密かつ強固であるのは、成分で
ある酸化ケイ素に融剤として酸化ホウ素またはホウ酸を
混入し成形、焼成すると、ある温度で酸化ホウ素が溶融
し、酸化ケイ素の表面と融合して酸化ケイ素間にホウケ
イ酸ガラスが形成され、緻密性、強固性がもたらされる
ことによる。The reason why the road aggregate of the present invention is dense and strong is that when the component silicon oxide is mixed with boron oxide or boric acid as a fluxing agent, molded and fired, the boron oxide melts at a certain temperature and the silicon oxide This is because borosilicate glass is formed between silicon oxides by fusing with the surface, resulting in denseness and firmness.
以下、本発明の実施例について説明する。なお当然のこ
とではあるが、本発明は以下述べる実施例により限定さ
れるものではない。Examples of the present invention will be described below. It should be noted that, as a matter of course, the present invention is not limited to the examples described below.
実施例−１
本実施例においては、本発明の道路用骨材を、舗装用の
石材の代用として用いる場合に具体化した。Example 1 In this example, the road aggregate of the present invention was used as a substitute for paving stones.
本実施例においは、酸化ケイ素（ＳｉＯｚ）の粉末と酸
化ホウ素（ＢｚＣｈ）の粉末を１０：１の割合で混合し
たものに必要に応じバインダー、水、助剤、安定剤など
を加えて成る混合物を混練して、これをペレット状に成
型する。成型は、例えば押し出し成型によることができ
る。あるいはロール成型によることができる。この成形
物を耐火粒子を薄く敷いた上に載置し焼成炉で焼成する
ことによって、破砕した石材の代わりに用いることがで
きるセラミック製道路用骨材が得られる。In this example, a mixture was prepared by mixing silicon oxide (SiOz) powder and boron oxide (BzCh) powder at a ratio of 10:1, and adding a binder, water, auxiliary agent, stabilizer, etc. as necessary. The mixture is kneaded and formed into pellets. Molding can be performed, for example, by extrusion molding. Alternatively, it can be formed by roll molding. By placing this molded product on a thin layer of refractory particles and firing it in a kiln, a ceramic road aggregate that can be used in place of crushed stone can be obtained.
本実施例での酸化ケイ素の原料としては、珪石、長石、
その他酸化ケイ素含有の鉱石を用いることができ、好ま
しくは酸化ケイ素以外の成分の含有率の小さいものを用
いる。いわゆる蛙目粘土（ガイロメ粘土）を用いること
も、コストの点から有利である。In this example, the raw materials for silicon oxide include silica, feldspar,
Other ores containing silicon oxide can be used, and those containing a small content of components other than silicon oxide are preferably used. The use of so-called frog's eye clay (Gailome clay) is also advantageous from the point of view of cost.
上記では、ペレット状に成形した後焼成したが、混合物
をプレス成形などを用い、例えば１０ｋｇ／−以上の圧
力でプレス成形して、これをペレット状に砕き、その後
焼成して道路用骨材を得るのでもよい。In the above, the mixture was formed into pellets and then fired, but the mixture was press-formed using a press molding method, for example, at a pressure of 10 kg/- or more, crushed into pellets, and then fired to produce road aggregate. It's okay to get it.
本実施例で得られた道路用骨材は、舗装用の破砕石材の
代わりとして、例えばアスファルト中に混合して用いる
ことによって、摩耗の小さい道路とすることができる。The road aggregate obtained in this example can be used as a substitute for crushed stone for paving, for example by mixing it into asphalt, thereby making it possible to create roads with less wear.
なお上記混合物には、助剤として味方など、あるいは融
点調節のためのアルミナ（Ａ Ｉｌ ｚ Ｏｉ ）を併
用でき、必要に応じて着色用の金属酸化物を含有させて
もよい。In addition, the above-mentioned mixture may contain an ally or alumina (A Il z Oi ) for adjusting the melting point as an auxiliary agent, and may contain a metal oxide for coloring if necessary.
酸化ホウ素の代わりに、ホウ酸を使用することができる
。酸化ホウ素は水の存在下でホウ酸となるので、ホウ酸
は酸化ホウ素と同等の作用を示すからである。本発明の
「酸化ホウ素またはホウ酸」には、このように酸化ホウ
素と同等の作用を示すものを全て含む。ホウ酸等を用い
る場合は、上記酸化ホウ素と対応する量に換算して混合
すればよい。 本実施例における焼成炉での焼成温度は
、約１ 、０００℃〜１ 、２００℃とする。これは、
酸化ケイ素の融点と酸化ホウ素の融点との間の温度に該
当する。この温度範囲で加熱焼成すると、緻密で強固な
焼成物が得られる。Boric acid can be used instead of boron oxide. This is because boron oxide turns into boric acid in the presence of water, so boric acid exhibits the same effect as boron oxide. The term "boron oxide or boric acid" used in the present invention includes all compounds that exhibit the same effect as boron oxide. If boric acid or the like is used, it may be mixed in an amount corresponding to the boron oxide described above. The firing temperature in the firing furnace in this example is approximately 1,000°C to 1,200°C. this is,
It corresponds to a temperature between the melting point of silicon oxide and that of boron oxide. When heated and fired in this temperature range, a dense and strong fired product can be obtained.
これは、焼成時に以下のような作用がもたらされること
に起因すると考えられる。即ち酸化ケイ素の粉末と酸化
ホウ素の粉末を混合して形成したものを高温で加熱する
と、酸化ケイ素の融点１，７００℃に対し酸化ホウ素の
融点が５７７℃であるため、加熱温度１ 、０００℃〜
１．２００℃の時、成形物の内部においては酸化ケイ素
は粉末のままであるが、酸−化ホウ素は溶融して流体と
なり、酸化ケイ素の粉末粒子と粒子の隙間及び周囲に浸
透し、更に酸化ケイ素の表面を溶融させる。この結果酸
化ケイ素の粒子と粒子とを強く引きつけるような作用を
示すとともに、酸化ケイ素の表面が溶融して酸化ホウ素
と融解し、ホウケイ酸ガラスが形成されることになる。This is thought to be due to the following effects brought about during firing. That is, when a mixture of silicon oxide powder and boron oxide powder is heated at a high temperature, the melting point of silicon oxide is 1,700°C, while the melting point of boron oxide is 577°C, so the heating temperature is 1,000°C. ~
1. At 200°C, silicon oxide remains as a powder inside the molded product, but boron oxide melts and becomes a fluid, penetrating into the spaces between and around the silicon oxide powder particles, and further Melts the surface of silicon oxide. As a result, the silicon oxide particles strongly attract each other, and the surface of the silicon oxide melts and melts with the boron oxide, forming borosilicate glass.
このように、酸化ケイ素に酸化ホウ素またはホウ酸を混
入し、成形、焼成することによって酸化ホウ素が融剤と
なって固体状の酸化ケイ素と固体状の酸化ケイ素との間
でホウケイ酸ガラスとなり、強固な物質が得られるもの
である。このため焼成物の構造は緻密な状態に近づく。In this way, by mixing boron oxide or boric acid with silicon oxide, molding and firing, the boron oxide acts as a flux and forms borosilicate glass between solid silicon oxide and solid silicon oxide. A strong substance can be obtained. Therefore, the structure of the fired product approaches a dense state.
これを焼成時の状態を模式的に示す第１図を用いて説明
すると、次の通りである。まず焼成前酸化ケイ素の粉末
ｌと酸化ホウ素の粉末２を混合した成形物Ｉを、各々融
点の間の温度にて加熱・焼成すると、第１図で■に示す
如く、酸化ホウ素の粉末２が融解して符号３のようにな
り、これがホウケイ酸ガラスとして酸化ケイ素の粉末１
中の空間を埋めると共に該粉末１同士を強固に結合させ
、網目状の如き構造をもたらす。この状態の時より冷却
すると、酸化ホウ素、ホウケイ酸ガラスは凝固し強固な
焼成物が得られる。なお第１図は説明のための略図であ
って、必ずしも実際の微細構造を示すものではなく、例
えば酸化ケイ素の粉末１は実際はもっと密になっている
が、説明上の明瞭さを保つため図の如くしたものである
。This will be explained using FIG. 1, which schematically shows the state during firing, as follows. First, when a molded product I, which is a mixture of unfired silicon oxide powder 1 and boron oxide powder 2, is heated and fired at a temperature between the respective melting points, boron oxide powder 2 is formed as shown by ■ in Figure 1. It melts and becomes like 3, and this becomes silicon oxide powder 1 as borosilicate glass.
It fills the space inside and firmly binds the powders 1 together, resulting in a network-like structure. When cooled from this state, the boron oxide and borosilicate glass solidify and a strong fired product is obtained. Note that FIG. 1 is a schematic diagram for explanation and does not necessarily show the actual microstructure. For example, silicon oxide powder 1 is actually more dense, but the diagram is shown for clarity of explanation. It is as follows.
上記本実施例の製造方法を用いると、昇温時間と冷却時
間が短くてすみ、量産が可能である。When the manufacturing method of this embodiment is used, the heating time and cooling time are short, and mass production is possible.
なお本実施例では酸化ケイ素の粉末と酸化ホウ素の粉末
とを１０：１の割合で混合したが、ホウ素成分を多くし
て例えば１０：３程度にすると硬くもろくなく傾向が出
ることがあり、逆にホウ素成分が少なすぎると上記した
酸化ホウ素の溶融による網目状構造に至らず、弱くなる
ことがあるので、本実施例では上述の割合を選定したの
である。In this example, silicon oxide powder and boron oxide powder were mixed at a ratio of 10:1, but if the boron content is increased to, for example, 10:3, it may tend to be hard and not brittle; If the boron component is too small, the above-mentioned network structure due to melting of boron oxide may not be achieved and the structure may become weak, so in this example, the above-mentioned ratio was selected.
上記製造方法によれば、酸化ホウ素が溶融し流体となっ
た時、焼成物はホウケイ酸ガラスとして酸化ケイ素の粒
子同士を強く引きつけ収縮すると同時に可塑状態となり
、緻密かつ強固なセラミック製道路用骨材が得られる。According to the above manufacturing method, when the boron oxide melts and becomes a fluid, the fired product strongly attracts the silicon oxide particles as borosilicate glass and contracts, simultaneously becoming a plastic state and producing a dense and strong ceramic road aggregate. is obtained.
本実施例のセラミック製の道路用骨材は、次のようにし
て、舗装用材として用いられる。The ceramic road aggregate of this example is used as a paving material in the following manner.
即ち、アスファルトなどに混合して、これを路上に敷設
し、通例の如くローラーで加圧して固める。本例の道路
用材は従来より用いられている破砕石材と全く同様に用
いることができるが、石材に比して緻密であり、機械的
強度が格段に大きいので、これを用いた舗装道路は摩耗
が少な（、長時間の使用に耐えられる。That is, it is mixed with asphalt or the like, laid on the road, and compacted by pressing with rollers as usual. The road material of this example can be used in exactly the same way as conventionally used crushed stone, but it is denser and has much greater mechanical strength than stone, so paved roads made of it will wear out. (can withstand long-term use.
本実施例で得られたセラミック材の強度その他の物性試
験の結果を、次の表に示す。The results of strength and other physical property tests of the ceramic material obtained in this example are shown in the following table.
なお試験における踵〜荷量方向慰第２図に示すとおりで
ある。The heel-to-load direction in the test is as shown in Figure 2.
表より、本発明の道路用骨材がきわめて強度が高く、摩
耗等に対してすぐれていることが理解されよう。耐火性
も良好であり、タイヤなどとの摩擦による熱（１２００
℃程度）にも充分余裕をもって耐えられる。From the table, it will be understood that the road aggregate of the present invention has extremely high strength and is excellent against wear and the like. It also has good fire resistance, and is resistant to heat caused by friction with tires etc.
℃ degree) with sufficient margin.
実施例−２
本実施例においては、本発明のセラミック製の道路用材
を、横断歩道を示す白線の代わりに用いた。即ち、大板
のセラミック板として形成し、これは必要に応じて白色
顔料等を加えて所望の色とし、これを道路に埋め込んで
、その表面を外に見せることにより、道路上の区画を明
示させるのである。Example 2 In this example, the ceramic road material of the present invention was used in place of a white line indicating a crosswalk. In other words, it is formed as a large ceramic plate, and if necessary, white pigment is added to this plate to give it the desired color.It is embedded in the road and its surface is exposed to the outside to clearly mark the divisions on the road. Let it happen.
本実施例では、比較的大板のセラミック板として形成す
るので、本例では前記実施例−１で用いた如き混合物を
１０ｋｇ／ｃ＋Ｊ程度、あるいはそれ以上の圧力でプレ
ス成形して成形物を作り、この成形物を耐火物粒子を薄
く敷いた上に載置し焼成炉で焼成することによって、セ
ラミック甲板を得る。In this example, since a relatively large ceramic plate is formed, the molded product is made by press-forming the mixture used in Example-1 at a pressure of about 10 kg/c+J or more. A ceramic deck is obtained by placing this molded product on a thin layer of refractory particles and firing it in a firing furnace.
焼成炉での焼成温度は実施例−１と同じとし、原料の混
合割合も同程度とした。The firing temperature in the firing furnace was the same as in Example-1, and the mixing ratio of the raw materials was also approximately the same.
なお本実施例によれば、従来より大型のセラミック板を
得ることができるので、横断歩道を示す道路用骨材の如
く、幅広でかつ長い材料が望ましい場合において、きわ
めて好適である。According to this embodiment, it is possible to obtain a larger ceramic plate than in the past, so it is extremely suitable in cases where wide and long materials are desired, such as road aggregates used for crosswalks.
即ち本実施例では前記の如く、酸化ホウ素が溶融し流体
となった時、焼成別は酸化ケイ素の粒子同士を強く引き
つけ収縮すると同時に可塑状態となり、反り及び、ひび
割れを発生することなく緻密になっていって、大板が得
られる。ここでは焼成前の成形時においてさほどの高圧
を必要とせず、上述した如き１０ｋｇ／ｃｍ以上の圧力
程度でよく、プレス機も小型ですみ、設備的・コスト的
に有利である。That is, in this example, as described above, when boron oxide melts and becomes a fluid, the silicon oxide particles strongly attract each other and contract, and at the same time become plastic, becoming dense without warping or cracking. You can get a large board. Here, a very high pressure is not required during the molding before firing, and the above-mentioned pressure of 10 kg/cm or more is sufficient, and the press machine can be small, which is advantageous in terms of equipment and cost.
また上記のように、焼成時にはある程度の流動性をもっ
た可塑状態の如くなるので、焼き固めている間に反りや
歪みが生じても、成形物が載置されている焼成台になじ
んで、反りや歪みが解消される。即ち下の焼成台に合っ
て、平坦になり、良好な製品が得られる。In addition, as mentioned above, during firing, the molded product becomes a plastic state with a certain degree of fluidity, so even if warping or distortion occurs during firing, the molded product will adapt to the firing table on which it is placed. Warpage and distortion are eliminated. In other words, it fits the baking table below and becomes flat, resulting in a good product.
〔発明の効果）
上述の如く本発明のセラミック製の道路用骨材は、摩耗
が小さく、従って各種の道路用の用途に用いた場合、使
用できる期間が長く、補修などの必要回数を低減できる
ものである。[Effects of the Invention] As mentioned above, the ceramic road aggregate of the present invention has low wear and therefore, when used for various road applications, can be used for a long time and can reduce the number of times required for repairs. It is something.
第１図は本発明の実施例の作用を説明するための略示図
である。第２図は本実施例を試験する際の衝撃荷重方向
を示す図である。
１・・・酸化ケイ素の粉末粒子、２・・・酸化ホウ素、
３・・・ホウケイ酸ガラス。FIG. 1 is a schematic diagram for explaining the operation of an embodiment of the present invention. FIG. 2 is a diagram showing the direction of impact load when testing this example. 1... Silicon oxide powder particles, 2... Boron oxide,
3...borosilicate glass.
Claims (1)
る成形物を焼成して得たセラミック製の道路用骨材。 ２、上記成形物がペレット状に成形されたものである、
特許請求の範囲第１項記載のセラミック製の道路用骨材
。 ３、上記道路用骨材が、道路上の区画を示すために用い
られるものである、特許請求の範囲第１項記載のセラミ
ック製の道路用骨材。[Claims] 1. A ceramic road aggregate obtained by firing a molded product containing silicon oxide and boron oxide or boric acid. 2. The above-mentioned molded product is molded into a pellet shape,
A ceramic road aggregate according to claim 1. 3. The ceramic road aggregate according to claim 1, wherein the road aggregate is used to mark a section on a road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9188986A JPS62246849A (en) | 1986-04-21 | 1986-04-21 | Ceramic aggregate for road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9188986A JPS62246849A (en) | 1986-04-21 | 1986-04-21 | Ceramic aggregate for road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62246849A true JPS62246849A (en) | 1987-10-28 |
Family
ID=14039122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9188986A Pending JPS62246849A (en) | 1986-04-21 | 1986-04-21 | Ceramic aggregate for road |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62246849A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186610B1 (en) * | 2012-05-23 | 2013-04-17 | 太平洋セメント株式会社 | Fired product |
-
1986
- 1986-04-21 JP JP9188986A patent/JPS62246849A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186610B1 (en) * | 2012-05-23 | 2013-04-17 | 太平洋セメント株式会社 | Fired product |
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