JPS586708B2 - Inorganic hardened body - Google Patents
Inorganic hardened bodyInfo
- Publication number
- JPS586708B2 JPS586708B2 JP4809178A JP4809178A JPS586708B2 JP S586708 B2 JPS586708 B2 JP S586708B2 JP 4809178 A JP4809178 A JP 4809178A JP 4809178 A JP4809178 A JP 4809178A JP S586708 B2 JPS586708 B2 JP S586708B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- water
- inorganic
- gypsum
- tsh
- 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
Links
- 239000002893 slag Substances 0.000 claims description 43
- 229910052602 gypsum Inorganic materials 0.000 claims description 16
- 239000010440 gypsum Substances 0.000 claims description 16
- 159000000007 calcium salts Chemical class 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 8
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 3
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000013078 crystal Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CJONZFZTOGYADY-UHFFFAOYSA-N O.OS(O)(=O)=O.OS(O)(=O)=O.OS(O)(=O)=O Chemical compound O.OS(O)(=O)=O.OS(O)(=O)=O.OS(O)(=O)=O CJONZFZTOGYADY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
この発明は建築用材料等に用いられるスラグ系の無機硬
化体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slag-based inorganic hardened body used for building materials and the like.
一般に、高炉スラグのような水硬性スラグを単独で用い
てスラグ系の無機硬化体を製造する場合、高炉スラグの
水利硬化が遅いため、スラグ系の無機硬化体の製造に長
時間を要し量産が困難であった。Generally, when hydraulic slag such as blast furnace slag is used alone to produce a slag-based inorganic hardened body, it takes a long time to produce the slag-based inorganic hardened body due to the slow water hardening of blast furnace slag. was difficult.
また、得られた無機硬化体が高密度化し、かつその強度
も小さかった。Furthermore, the obtained inorganic cured product had a high density and low strength.
一方、高炉スラグと石こうを併用してスラグ系の無機硬
化体を製造する場合にも、やはり高炉スラグの水利硬化
が遅いために無機硬化体の製造に長時間を要していた。On the other hand, even when blast furnace slag and gypsum are used together to produce a slag-based inorganic hardened body, it still takes a long time to produce the inorganic hardened body because the water-based hardening of blast furnace slag is slow.
ところが、この場合には、高炉スラグ単独の場合と異な
り、低密度のスラグ系の無機硬化体が得られ、かつ強度
もスラグ単独で製造したものよりも大きかった。However, in this case, unlike the case of using blast furnace slag alone, a low-density slag-based inorganic hardened body was obtained, and the strength was also greater than that produced using slag alone.
しかしながら、このようにして製造されたスラグ系の無
機硬化体中には、水に可溶な石こうが含有されているた
め、耐水性が著しく低いという問題があった。However, since the slag-based inorganic hardened body produced in this manner contains water-soluble gypsum, there was a problem in that the water resistance was extremely low.
そこで、この発明の目的は、量産性に富み、低密度で、
強度が大きく、しかも耐水性に富む無機硬化体を提供す
ることにある。Therefore, the purpose of this invention is to achieve high mass productivity, low density,
An object of the present invention is to provide an inorganic cured product having high strength and water resistance.
つぎに、この発明を詳しく説明する。Next, this invention will be explained in detail.
この発明者等は、高炉スラグのような水硬性スラグと石
こうを併用したスラグ系の無機硬化体の耐水性の向上に
ついて研究を重ねた結果、水硬性スラグと石こうを併用
した硬化体用組成物に、さらにカルシウムアルミネート
モノサルフエートハイドレート（３ＣａＯ−Ａｔ２０３
−ＣａＳＯ４・ｎＨ２０，ｎはおおむね１２の値をとる
、以下これをＭＳＨと略す）と水溶性カルシウム塩を配
合すると、水硬性スラグの水和硬化が促進されて硬化体
の製造速度が速くなり、かつ無機硬化体の耐水性が向上
することを見い出した。As a result of repeated research on improving the water resistance of slag-based inorganic hardened bodies that use a combination of hydraulic slag and gypsum such as blast furnace slag, the inventors developed a composition for hardened bodies that uses a combination of hydraulic slag and gypsum. Furthermore, calcium aluminate monosulfate hydrate (3CaO-At203
-CaSO4・nH20,n takes a value of approximately 12 (hereinafter abbreviated as MSH)) and a water-soluble calcium salt accelerates the hydration hardening of hydraulic slag and increases the production speed of the hardened product. It was also found that the water resistance of the inorganic cured product is improved.
すなわち、水硬性スラグと石こうを併用した硬化体用組
成物に、ＭＳＨと水溶性カルシウム塩を配合することに
より、石こうとＭＳＨが水の存在下において反応してカ
ルシウムアルミネートトリサルフエートハイドレート（
３ＣａＯ・Ａ１２０３・３Ｃａ８０４／ｎＨ２０，ｎは
おおむね３１〜３２の値をとる、以下これをＴＳＨと略
す）の針状結晶になって水に不溶となり、さらに水溶性
カルシウム塩が水硬性スラグの水和硬化を促進する。That is, by blending MSH and a water-soluble calcium salt into a composition for a cured body that uses both hydraulic slag and gypsum, the gypsum and MSH react in the presence of water to form calcium aluminate trisulfate hydrate (
3CaO・A1203・3Ca804/nH20, n takes a value of approximately 31 to 32 (hereinafter abbreviated as TSH) becomes insoluble in water, and water-soluble calcium salts further hydrate hydraulic slag. Accelerates hardening.
その結果、耐水性に富む無機硬化体が短時間で得られる
。As a result, an inorganic cured product with high water resistance can be obtained in a short time.
この無機硬化体は、図面に示すように、大きな塊状のス
ラグ水和硬化体１にＴＳＨの針状結晶２が付着し、この
ような形状のものが他のものと相互にＴＳＨ針状結晶２
のからみ合いで連結して構成されている。As shown in the drawing, in this inorganic hardened body, TSH needle crystals 2 are attached to a large block of slag hydrated hardened body 1, and the TSH needle crystals 2 are attached to each other.
It is constructed by connecting and intertwining each other.
したがって、ＴＳＨ針状結晶２のからみ合いによる補強
効果によって高強度になるとともに、その結晶によって
空隙が大きくなり低密度になっている。Therefore, the reinforcing effect due to the entanglement of the TSH needle crystals 2 provides high strength, and the crystals increase the voids, resulting in a low density.
この発明で用いる水硬性スラグさしては、例えば高炉ス
ラグがあげられる。The hydraulic slag used in the present invention includes, for example, blast furnace slag.
しかしながら、これに限定されるものではなく、水硬性
を有するスラグであればどのようなものを用いてもよい
。However, the slag is not limited to this, and any hydraulic slag may be used.
ＭＳＨとしては、通常の方法、例えばＣａＯ成分原料と
、Ａ１２０３成分原料と、ＣａＳＯ４成分原料とをほぼ
３：１：１のモル比で配合し、湿熱合成して得られたも
のが用いられる。MSH is obtained by a conventional method, for example, by blending a CaO component raw material, an A1203 component raw material, and a CaSO4 component raw material in a molar ratio of about 3:1:1, and performing wet heat synthesis.
石こうとしては、主に２水石こうが用いられるが半水石
こうでも無水石こうでも用いることができる。As the gypsum, dihydrate gypsum is mainly used, but hemihydrate gypsum or anhydrous gypsum can also be used.
これらの３成分は、その使用量を、無機硬化体中におい
て水硬性スラグ（Ｓ）とＴＳＨ（Ｔ）が重量比でＳ／Ｔ
＝０．１／１〜４／１になるように選んで硬化体用組成
物中に含有させることが好ましい。The amounts of these three components used are determined by the weight ratio of hydraulic slag (S) and TSH (T) in the inorganic cured body.
It is preferable to select a ratio of 0.1/1 to 4/1 and include it in the composition for a cured product.
ＴＳＨに対する水硬性スラグの割合が、前述の範囲を下
まわるとスラグによる耐水性の付与が不十分となり、Ｔ
ＳＨのみからなる無機硬化体に比較して強度が小さくな
る。If the ratio of hydraulic slag to TSH is below the above-mentioned range, the water resistance provided by the slag will be insufficient, and T
The strength is lower than that of an inorganic cured body consisting only of SH.
この場合には、スラグが単なる充填剤として作用するも
のと考えられる。In this case, it is thought that the slag acts simply as a filler.
逆に、ＴＳＨに対する水硬性スラグの割合が４／１より
小さくても、１．２／１以上になると、ＴＳＨによる強
度補強効果が不十分となるため、無機硬化体の強度が低
下するとともに、低密度のものが得られにくくなる。On the other hand, even if the ratio of hydraulic slag to TSH is less than 4/1, if it becomes more than 1.2/1, the strength reinforcing effect of TSH will be insufficient, and the strength of the inorganic cured body will decrease. It becomes difficult to obtain low-density products.
また、ＭＳＨと石こうの配合割合等が不適正であってＴ
ＳＨ化が完全に行われないで、いずれかが残存すると無
機硬化体の強度発現が不十分になる。In addition, the mixing ratio of MSH and gypsum is inappropriate and T
If SH conversion is not completed and any of them remains, the strength of the inorganic cured product will be insufficient.
特に石こうが残存すると強度が著しく低下する。In particular, if gypsum remains, the strength will drop significantly.
したがってそれらを完全に反応させることが好ましい。Therefore, it is preferable to allow them to react completely.
また、スラグの水利硬化が不十分な場合には、無機硬化
体の耐水性がやや悪くなる。Furthermore, if the water-based hardening of the slag is insufficient, the water resistance of the inorganic hardened product will be somewhat poor.
これはスラグが耐水性にも寄与することを示す。This indicates that slag also contributes to water resistance.
水溶性カルシウム塩としては、例えばＣａＣｌ２，（Ｃ
Ｈ３ＣＯＯ）２ｃａ，（ＨＣＯＯ）２Ｃａがあげられる
。Examples of water-soluble calcium salts include CaCl2, (C
Examples include H3COO)2ca and (HCOO)2Ca.
このような水溶性カルシウム塩は、硬化体用組成物中に
０．１〜５．０重量係（以下係と略す）含有されるよう
に配合することが好ましい。Such a water-soluble calcium salt is preferably blended in the composition for a cured body in an amount of 0.1 to 5.0 weight percent (hereinafter abbreviated as weight percent).
水溶性カルシウム塩の含有量が、その範囲を下まわると
スラグに対する水利硬化促進作用が小さくなり、逆にそ
の範囲を上まわってもスラグに対する水和硬化促進作用
がまた小さくなる。If the content of the water-soluble calcium salt is below this range, the hydration hardening promoting effect on the slag will be reduced, and if it exceeds this range, the hydration hardening promoting effect on the slag will also be reduced.
水溶性カルシウム塩のうち、ＣａＣ１２ｔ（ＨＣＯＯ）
２ＣａはＴＳＨ化反応に関与しないが、（ＣＨｓＣＯＯ
）２ＣａはＴＳＨ化反応に関与し、その反応を阻害する
。Among water-soluble calcium salts, CaC12t (HCOO)
2Ca does not participate in the TSH conversion reaction, but (CHsCOO
)2Ca participates in the TSH conversion reaction and inhibits the reaction.
したがって、（ＣＨ３Ｃ００）２Ｃａを用いる場合には
他の水溶性カルシウム塩を用いる場合に比べてＴＳＨ化
反応の反応速度が遅延するが、それによってＴＳＨの生
成結晶が一層微細な針状結晶となり、結晶相互のからみ
合いの程度が強くなり強度発現に有効に作用する。Therefore, when (CH3C00)2Ca is used, the reaction rate of the TSH formation reaction is delayed compared to when other water-soluble calcium salts are used, but as a result, the TSH produced crystals become even finer needle-like crystals, and The degree of mutual entanglement becomes stronger, which effectively affects strength development.
しかしながら、このようなＴＳＨ化阻害作用を有する水
溶性カルシウム塩を用いる場合には、硬化体用組成物中
の含有量が２係以下になるように配合することが好まし
い。However, when such a water-soluble calcium salt having a TSH formation inhibiting effect is used, it is preferable to mix it so that the content in the composition for a cured product is 2 or less.
含有量が２係を超えると、硬化体製造の際に６０〜８０
℃において数時間養生しても完全にはＴＳＨ化が完了し
なくなる。If the content exceeds 2%, 60 to 80
Even after curing for several hours at ℃, TSH conversion is not completely completed.
つぎに、無機硬化体の製法の一例について説明すると、
水硬性スラグ、ＭＳＨ，石こうおよび水溶性カルシウム
塩を所定で割合で配合し、これに水を加えて混練してス
ラリ状にし、これを型枠中に流し込む。Next, an example of a method for producing an inorganic cured product will be explained.
Hydraulic slag, MSH, gypsum and water-soluble calcium salt are blended in a predetermined ratio, water is added and kneaded to form a slurry, and this is poured into a mold.
スラリ中にアスベスト、ガラス繊維等の補強材を混入す
る場合にはスラリを抄造する。When a reinforcing material such as asbestos or glass fiber is mixed into the slurry, the slurry is made into paper.
ついで、それを養生する。Then, cultivate it.
この場合、水硬性スラグの硬化速度およびＴＳＨの生成
速度を考慮すると、養生は、温度６０〜８０℃の湿空中
で数時間行うことが好ましい。In this case, in consideration of the hardening speed of the hydraulic slag and the production speed of TSH, it is preferable that curing be performed in a humid atmosphere at a temperature of 60 to 80° C. for several hours.
温度が６０℃未満ではスラグの硬化が不充分となり、８
０℃を超えるとＴＳＨ化反応が起りにくくなる傾向がみ
られる。If the temperature is less than 60°C, the slag will not be sufficiently hardened, and 8
When the temperature exceeds 0°C, there is a tendency that the TSH conversion reaction becomes difficult to occur.
このようにして、低密度で、強度が大きく、耐水性に富
む無機硬化体を短時間で得ることができる。In this way, an inorganic cured product with low density, high strength, and high water resistance can be obtained in a short time.
つぎに、実施例について比較例と合わせて説明する。Next, examples will be described together with comparative examples.
実施例１〜１６，比較例１，２ 原料として下記のものを用いた。Examples 1 to 16, Comparative Examples 1 and 2 The following materials were used as raw materials.
水硬性スラグ：高炉スラグ粉砕品（商品名：エスメント
，新日本製鉄化学社製，ブ
レーン値３５００ｃｍ２／ｇ〜４０００
ｃｒｔ／ｉ）
ＭＳＨ：オートクレープ中においてスラリ法で合成した
もの
石こう＝２水石こう（試薬１級）
アルカリ性化合物：ＮａＯＨ，ＫＯＨ，Ｃａ（ＯＨ）２
ｔ（添加剤）ＮａＣＯ３いずれも試薬１級）上記の原料
をつぎのように配合した。Hydraulic slag: pulverized blast furnace slag (trade name: Esment, manufactured by Nippon Steel Chemical Co., Ltd., Blaine value 3500 cm2/g - 4000 crt/i) MSH: Synthesized by slurry method in an autoclave Gypsum = Dihydric gypsum ( Reagent 1st grade) Alkaline compounds: NaOH, KOH, Ca(OH)2
t (additive) NaCO3 (all reagents 1st grade) The above raw materials were blended as follows.
すなわち、水硬性スラグをその配合量が配合固形分全量
に対して後記の表に示す割合になるように選んで配合す
るとともに、水溶性カルシウム塩を、その配合量が配合
固形分全量に対して後記の表に示す割合になるように配
合した。In other words, the hydraulic slag is selected and blended in such a way that its blending amount is in proportion to the total blended solid content as shown in the table below, and the water-soluble calcium salt is selected and blended in such a way that its blending amount is based on the blended total solid content. The ingredients were blended in the proportions shown in the table below.
そして、ＭＳＨと石こうを、ＴＳＨ合成の理論比率（Ｍ
ＳＨ）／（石こう）＝０．６４／０．３６になるように
選んで配合した。Then, the theoretical ratio of MSH and gypsum for TSH synthesis (M
SH)/(gypsum) = 0.64/0.36.
つぎに、この配合物に、水を後記の表の混水比（配合固
形分に対する配合水量一水重量／全固形分重量）になる
ように加えて二−ダで攪拌混合することによりスラリを
つくった。Next, water is added to this mixture at a water mixing ratio shown in the table below (amount of water mixed to solid content - weight of water/weight of total solid content), and the mixture is stirred and mixed in a seconder to form a slurry. I made it.
この場合、添加剤の作用によりスラリの流動性が向上し
混合が容易であった。In this case, the fluidity of the slurry was improved by the action of the additive, and mixing was easy.
つぎに、これを型枠中に流し込んで同表に示す温度で同
表に示す時間湿空養生した。Next, this was poured into a mold and cured in a humid air at the temperature shown in the same table for the time shown in the same table.
つぎに、それを型から外して４０℃で乾燥し、無機硬化
体を得た。Next, it was removed from the mold and dried at 40°C to obtain an inorganic cured product.
以上の実施例および比較例におけるスラリの状態および
得られた無機硬化体の性能試験の結果を次の表に示す。The conditions of the slurry in the above Examples and Comparative Examples and the results of performance tests of the obtained inorganic cured bodies are shown in the following table.
表から明らかなように、実施例の無機硬化体は、ＭＳＨ
およびアルカリ性化合物の添加により、吸水低下率が小
さく、低密度で、しかも短期間に高強度が発現すること
がわかる。As is clear from the table, the inorganic cured body of the example was MSH
It can be seen that by adding an alkaline compound, the rate of decrease in water absorption is small, the density is low, and high strength is developed in a short period of time.
そして、スラグ量が多くなるに従ってその強度が向上し
ている。As the amount of slag increases, its strength improves.
しかしながら、水溶性カルシウム塩の添加量が多くなっ
たり、養生が不充分でＴＳＨ化が不完全であると、硬化
体の強度発現が不充分になっている。However, if the amount of water-soluble calcium salt added is too large or if curing is insufficient and TSH conversion is incomplete, the strength of the cured product is insufficient.
図面はこの発明の無機硬化体の硬化組織を説明する説明
図である。
１・・・・・・スラグ水和硬化体、２・・・・・・ＴＳ
Ｈの針状結晶。The drawings are explanatory diagrams for explaining the hardened structure of the inorganic hardened body of the present invention. 1...Slag hydrated hardened body, 2...TS
Needle crystals of H.
Claims (1)
エートハイドレートと石こうと水溶性カルシウム塩を主
要成分とする硬化体用組成物を硬化してなる無機硬化体
。 ２ 前記水溶性カルシウム塩が、ＣａＣ１２，（ＣＨ３
Ｃ００）２Ｃａ，（ＨＣＯＯ）２Ｃａからなる群から選
ばれた少なくとも１つの水溶性カルシウム塩である特許
請求の範囲第１項記載の無機硬化体．[Scope of Claims] 1. An inorganic cured product obtained by curing a composition for a cured product whose main components are hydraulic slag, calcium aluminate monosulfate hydrate, gypsum, and a water-soluble calcium salt. 2 The water-soluble calcium salt is CaC12, (CH3
The inorganic hardened body according to claim 1, which is at least one water-soluble calcium salt selected from the group consisting of C00)2Ca and (HCOO)2Ca.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4809178A JPS586708B2 (en) | 1978-04-21 | 1978-04-21 | Inorganic hardened body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4809178A JPS586708B2 (en) | 1978-04-21 | 1978-04-21 | Inorganic hardened body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54139631A JPS54139631A (en) | 1979-10-30 |
| JPS586708B2 true JPS586708B2 (en) | 1983-02-05 |
Family
ID=12793640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4809178A Expired JPS586708B2 (en) | 1978-04-21 | 1978-04-21 | Inorganic hardened body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586708B2 (en) |
-
1978
- 1978-04-21 JP JP4809178A patent/JPS586708B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54139631A (en) | 1979-10-30 |
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