JPH04357182A - Production of light-weight cellular concrete - Google Patents
Production of light-weight cellular concreteInfo
- Publication number
- JPH04357182A JPH04357182A JP13105191A JP13105191A JPH04357182A JP H04357182 A JPH04357182 A JP H04357182A JP 13105191 A JP13105191 A JP 13105191A JP 13105191 A JP13105191 A JP 13105191A JP H04357182 A JPH04357182 A JP H04357182A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- alc
- production
- light
- alumite
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011381 foam concrete Substances 0.000 title 1
- 239000002994 raw material Substances 0.000 claims abstract description 19
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 229940037003 alum Drugs 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 24
- 239000000377 silicon dioxide Substances 0.000 abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000000292 calcium oxide Substances 0.000 abstract description 2
- 235000012255 calcium oxide Nutrition 0.000 abstract description 2
- 229910052934 alunite Inorganic materials 0.000 abstract 2
- 239000010424 alunite Substances 0.000 abstract 2
- 239000011435 rock Substances 0.000 abstract 2
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 abstract 2
- 239000004575 stone Substances 0.000 description 7
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000654 additive Substances 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 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010097 foam moulding Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910018404 Al2 O3 Inorganic materials 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 150000004760 silicates Chemical class 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は明礬石を含有する珪酸質
原料を用いて、軽量気泡コンクリート（以下ＡＬＣと略
す）を製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing lightweight aerated concrete (hereinafter abbreviated as ALC) using a siliceous raw material containing alum.
【０００２】0002
【従来の技術】ＡＬＣは、石灰及びセメント等の石灰質
原料粉末と珪砂、珪石等の珪酸質原料粉末とに水とアル
ミニウム粉末などの添加剤をくわえて、発泡成形し、こ
れを半硬化状態で切断し、次いでオートクレーブ中で高
温高圧水蒸気養生を行って製造されている。[Prior Art] ALC is made by adding water and additives such as aluminum powder to calcareous raw material powder such as lime and cement, and silicic raw material powder such as silica sand and silica stone, and foam-molding the mixture in a semi-hardened state. It is manufactured by cutting it and then curing it with high temperature and high pressure steam in an autoclave.
【０００３】ＡＬＣは建築材料として使用されるため、
その要求性能を長年にわたり維持するための耐久性が特
に重要である。そのためには充分な初期硬度が必要であ
ることは云うまでもないが長年月にわたる物性劣化を最
小限にするために製品中に安定鉱物であるトバモライト
結晶を多量に生成させることが重要である。このために
ＡＬＣの製造にあたっては使用する原料の品質が重要で
あり、特に天然原料をそのまま使用する珪酸質原料につ
いてはその選択が重要な問題であった。従来この珪酸質
原料としては一般的に高純度のものが使われている。た
とえば、アルカリについては０．５％以下のものを使用
する。又、明礬石については１．６％以下のものを使用
する（特開昭６２−１９１４８１）等が提案されている
。これら高純度の珪酸質原料を使用すれば、それなりの
効果は期待出来るが近年ＡＬＣ製造用に利用出来る高純
度珪石は日本では枯渇してきているのが現状である。[0003] Since ALC is used as a building material,
Durability is particularly important in order to maintain the required performance for many years. Needless to say, sufficient initial hardness is required for this purpose, but it is also important to generate a large amount of tobermorite crystals, which are stable minerals, in the product in order to minimize deterioration of physical properties over many years. For this reason, the quality of the raw materials used is important in the production of ALC, and in particular, the selection of silicic raw materials, which are natural raw materials used as they are, is an important issue. Conventionally, this silicate raw material has generally been of high purity. For example, as for alkali, 0.5% or less is used. Furthermore, it has been proposed to use alumite with a content of 1.6% or less (Japanese Patent Application Laid-open No. 191481-1981). If these high-purity siliceous raw materials are used, certain effects can be expected, but in recent years, high-purity silica stones that can be used for ALC production have been running out in Japan.
【０００４】0004
【発明が解決しようとする課題】本発明は、比較的多量
に存在する明礬石含有珪石を用いて高結晶度のＡＬＣを
効率よく製造する方法に関するものであり、不純物とし
ての明礬石中の悪影響成分（主としてＫ２ Ｏ）、好影
響成分（主としてＡｌ２ Ｏ３ ）と好悪両影響成分（
主としてＳＯ３ ）をコントロールすることにより達成
しようとするものである。[Problems to be Solved by the Invention] The present invention relates to a method for efficiently producing ALC with high crystallinity using alumite-containing silica stone, which is present in a relatively large amount. components (mainly K2O), components with positive effects (mainly Al2O3), and components with both positive and negative effects (mainly Al2O3).
This is mainly achieved by controlling SO3).
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
、本願発明者は鋭意研究の結果、ＡＬＣの製造に使用す
る珪酸質原料として明礬石を３．５〜８．０ｗｔ％好ま
しくは４．０〜７．０ｗｔ％含有するものを使用するこ
とにより明礬石を構成する成分中の好悪成分がバランス
し、効率よく高品質のＡＬＣが製造出来ることを見いだ
し本願発明に至ったものである。[Means for Solving the Problems] In order to solve the above problems, the inventors of the present application have conducted intensive research and found that alumite is preferably used in an amount of 3.5 to 8.0 wt% as a silicate raw material used in the production of ALC. It was discovered that by using alumite containing 0 to 7.0 wt%, the favorable and unfavorable components in the components constituting alumite are balanced, and high quality ALC can be efficiently produced, leading to the present invention.
【０００６】本発明でいうＡＬＣとは前述の様に石灰及
びセメント等の石灰質原料粉末と、珪砂、珪石等の珪酸
質原料粉末とに水とアルミニウム粉末などの添加剤を加
えて、発泡成形し、これを半硬化状態で切断し次いでオ
ートクレーブ中で高温高圧水蒸気養生を行って製造され
たもののことをいう。珪酸質原料中の明礬石量が３．５
ｗｔ％以下ではＡＬＣの高温高圧水蒸気養生に対して好
影響を与えるＡｌ２ Ｏ３ 、ＳＯ３ が不足しトバモ
ライト結晶の成長速度及び量が不足し、又８．０ｗｔ％
以上になると悪影響を与えるＫ２ Ｏ，ＳＯ３ が過剰
になるため同様に良い品質のＡＬＣが得られない。従っ
て明礬石含有量を上記範囲にコントロールすることによ
り最も効率よく高品質のＡＬＣの製造が可能となる。[0006] As mentioned above, ALC in the present invention is formed by adding water and additives such as aluminum powder to calcareous raw material powder such as lime and cement, and silicic raw material powder such as silica sand and silica stone, and foam-molding the mixture. , which is manufactured by cutting it in a semi-hardened state and then curing it with high temperature and high pressure steam in an autoclave. The amount of alumite in the siliceous raw material is 3.5
If it is less than 8.0 wt%, Al2 O3 and SO3, which have a positive effect on the high temperature and high pressure steam curing of ALC, will be insufficient, and the growth rate and amount of tobermorite crystals will be insufficient.
If it exceeds the amount, K2 O and SO3, which have an adverse effect, become excessive, so that ALC of good quality cannot be obtained. Therefore, by controlling the alumite content within the above range, high quality ALC can be produced most efficiently.
【０００７】[0007]
【実施例】明礬石含有率が０．２、４．０、６．０、１
２．０ｗｔ％の珪石各々に表１に示すように生石灰及び
ポルトランドセメントの主要原料をＣ／Ｓ比が所定値と
なるように配合し、これらに二水石膏の所定量と水と少
量のアルミニウム粉末を添加し、以下常法に従ってＡＬ
Ｃを製造した。[Example] Alumite content is 0.2, 4.0, 6.0, 1
As shown in Table 1, 2.0 wt% of each silica stone is mixed with quicklime and the main raw materials of Portland cement so that the C/S ratio becomes a specified value, and to these are added a specified amount of dihydrate gypsum, water, and a small amount of aluminum. Add the powder and perform AL according to the following conventional method.
C was produced.
【０００８】圧縮強度はＪＩＳＡ−５４１６−７項によ
って測定した。又製品中のトバモライトの結晶度をＸ線
回析装置で測定した。その結果、明礬石６．０ｗｔ％を
含む珪石を使用したときが最も結晶化速度が速くかつ、
強度も上がった。上記の組成で成型したモルタルをマイ
クロボンベに入れ、１８５℃に保ったときの時間とトバ
モライト５強線の合計の関係を図１に示す。Compressive strength was measured according to JISA-5416-7. In addition, the crystallinity of tobermorite in the product was measured using an X-ray diffraction device. As a result, the crystallization rate was the fastest when using silica stone containing 6.0 wt% of alumite, and
The strength has also increased. FIG. 1 shows the relationship between time and the total of tobermorite 5 strong lines when a mortar molded with the above composition was placed in a micro cylinder and maintained at 185°C.
【０００９】トバモライトの同定はターゲットＣｕのＸ
線回折により測定した。Identification of tobermorite is based on the target Cu
Measured by line diffraction.
【００１０】0010
【表１】[Table 1]
【００１１】[0011]
【発明の効果】本発明によれば現在殆ど廃棄されている
明礬石混入珪石を有効に活用出来るばかりでなく、高結
晶度の耐久性の高いＡＬＣを効率よく製造することが出
来る。According to the present invention, not only can silica stone mixed with alumite, which is currently almost discarded, be effectively utilized, but also highly durable ALC with high crystallinity can be efficiently produced.
【図１】マイクロボンベ中で１８５℃に保ったときの時
間とトバモライト５強線の合計との関係を示す。FIG. 1 shows the relationship between time and the total of tobermorite 5 strong lines when kept at 185° C. in a micro bomb.
Claims (1)
する軽量気泡コンクリートの製造法において、明礬石を
３．５〜８．０ｗｔ％含有する珪酸質原料を使用するこ
とを特徴とする軽量気泡コンクリートの製造法。[Claim 1] A method for producing lightweight aerated concrete mainly composed of a silicate raw material and a calcareous raw material, characterized in that a silicate raw material containing 3.5 to 8.0 wt% of alum is used. Method of manufacturing aerated concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03131051A JP3121039B2 (en) | 1991-06-03 | 1991-06-03 | Manufacturing method of lightweight cellular concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03131051A JP3121039B2 (en) | 1991-06-03 | 1991-06-03 | Manufacturing method of lightweight cellular concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04357182A true JPH04357182A (en) | 1992-12-10 |
| JP3121039B2 JP3121039B2 (en) | 2000-12-25 |
Family
ID=15048867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03131051A Expired - Lifetime JP3121039B2 (en) | 1991-06-03 | 1991-06-03 | Manufacturing method of lightweight cellular concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3121039B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803484A1 (en) * | 1996-04-22 | 1997-10-29 | Ask Corporation | Calcium silicate board and method of manufacture therefor |
-
1991
- 1991-06-03 JP JP03131051A patent/JP3121039B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803484A1 (en) * | 1996-04-22 | 1997-10-29 | Ask Corporation | Calcium silicate board and method of manufacture therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3121039B2 (en) | 2000-12-25 |
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