JP2846232B2 - Improved Portland cement and method for producing ALC - Google Patents
Improved Portland cement and method for producing ALCInfo
- Publication number
- JP2846232B2 JP2846232B2 JP5350347A JP35034793A JP2846232B2 JP 2846232 B2 JP2846232 B2 JP 2846232B2 JP 5350347 A JP5350347 A JP 5350347A JP 35034793 A JP35034793 A JP 35034793A JP 2846232 B2 JP2846232 B2 JP 2846232B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- portland cement
- slurry
- improved
- particle size
- 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
- 239000011398 Portland cement Substances 0.000 title claims description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000004568 cement Substances 0.000 claims description 33
- 239000002002 slurry Substances 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セメントの粒度を調整
してセメントのｎ値を増加させることにより、初期流動
性を高め、かつその硬化を早めた改良ポルトランドセメ
ントと、これを用いたＡＬＣの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved Portland cement in which the initial fluidity is increased and the setting thereof is accelerated by adjusting the particle size of the cement to increase the n value of the cement, and an ALC using the same. And a method for producing the same.
【０００２】[0002]
【従来の技術】一般にＡＬＣ（軽量気泡コンクリート）
を製造するには、まずケイ石、ケイ砂などのケイ酸質原
料粉末と生石灰などの石灰質原料粉末とポルトランドセ
メントとからなる配合物に水を加えて混合し、次にこれ
にアルミニウム粉末のような発泡剤を添加し調製してス
ラリーを作製し、次いでこのスラリーを型枠に注入して
発泡させ、さらに所定時間経過し可塑性状態となったと
きにピアノ線で所望寸法に切断し、その後これをオート
クレーブに入れて高温高圧で水蒸気養生して製品を得る
といった方法が採用されている。2. Description of the Related Art Generally, ALC (lightweight cellular concrete) is used.
First, water is added to a mixture of siliceous raw material powders such as silica stone and silica sand, calcareous raw material powders such as quicklime, and Portland cement, and then mixed. A slurry is prepared by adding and preparing a suitable foaming agent, and then the slurry is poured into a mold for foaming, and when a predetermined time has elapsed and the plastic state has been reached, the slurry is cut into a desired size with a piano wire, and thereafter, Is placed in an autoclave and steam cured at high temperature and high pressure to obtain a product.
【０００３】ところで、このような製造方法において好
ましい条件としては、ＡＬＣ製造用の配合物から得られ
るスラリーが型枠注入後硬化するまでは低い粘性を保
ち、かつ、これがより早く切断可能な硬度に達するとと
もにその硬度がなるべく長く維持されることである。な
ぜなら、スラリーが高粘性になると発泡が乱れ、気泡の
大きさが不均一になるとともに、その分布も片寄った状
態となってしまうからである。[0003] By the way, preferable conditions in such a production method are that a slurry obtained from a compound for ALC production keeps a low viscosity until it is hardened after injection into a mold, and the slurry has a hardness that can be cut more quickly. As soon as it reaches, its hardness is maintained as long as possible. This is because if the slurry becomes highly viscous, the foaming is disturbed, the size of the bubbles becomes non-uniform, and the distribution becomes uneven.
【０００４】一方、切断可能な硬度に達するまでの時間
が長くなると、発泡工程から切断工程までの間が延びて
生産性が悪くなり、また切断可能時間が短くなると、切
断作業可能な時間が限られてしまい、作業の自由度がか
えって低下するからである。そして、前述した条件を満
たすため、例えば粘度を低下させるためには水比を大き
くしたり、早く硬化させるためにはいわゆる早強セメン
トを使用するといったことが考えられる。[0004] On the other hand, if the time required to reach the cuttable hardness becomes longer, the time from the foaming step to the cutting step is extended, and the productivity is deteriorated. This is because the degree of freedom of work is rather reduced. In order to satisfy the above-mentioned conditions, for example, it is conceivable to increase the water ratio in order to reduce the viscosity, or to use a so-called early-strength cement in order to quickly cure.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、一般に
セメント配合物では、スラリーの粘度を低くさせれば硬
化時間が長くなり、早く硬化させれば切断可能な硬度を
持続する時間が短くなる傾向があることから、粘度を低
下させるため水比を大きくしても、硬化に長時間を要し
てしまい生産性が悪くなってしまう。また、単に早強性
セメントを使用しても、硬化速度が早すぎ、切断可能な
硬度を維持する時間も短くなって切断可能時間が短くな
り、作業性が低下してしまう。However, in general, in the case of a cement compound, if the viscosity of the slurry is lowered, the hardening time is prolonged, and if it is hardened quickly, the time for maintaining the cuttable hardness tends to be short. For this reason, even if the water ratio is increased to lower the viscosity, it takes a long time to cure and the productivity is deteriorated. Further, even if only the early-strength cement is used, the curing speed is too fast, the time for maintaining the cuttable hardness is shortened, the cuttable time is shortened, and the workability is reduced.
【０００６】本発明は前記事情に鑑みてなされたもの
で、その目的とするところは、スラリー注入後硬化する
までの間低粘性を保ち、かつ早く切断可能な硬度に達す
るとともに、その硬度を長く維持できる改良ポルトラン
ドセメントと、これを用いたＡＬＣの製造方法を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to maintain a low viscosity until it is hardened after the slurry is injected, to reach a hardness that can be cut quickly, and to increase the hardness. An object of the present invention is to provide an improved Portland cement that can be maintained and a method for producing ALC using the same.
【０００７】[0007]
【課題を解決するための手段】本発明の請求項１記載の
改良ポルトランドセメントでは、３ＣａＯ・ＳｉＯ2含
有量が４５重量％〜７０重量％のポルトランドセメント
であり、セメントの粒度が調整されてセメントのｎ値が
１．１００以上であることを前記課題の解決手段とし
た。請求項２記載の改良ポルトランドセメントでは、セ
メントのｎ値が１．１００以上〜１．５００以下であ
り、かつ粉末度がブレーン比表面積で３０００ｃｍ2／
ｇ〜１００００ｃｍ2／ｇであることを前記課題の解決
手段とした。請求項３記載のＡＬＣの製造方法では、前
記改良ポルトランドセメントと、ケイ酸質原料粉末およ
び石灰質原料粉末とからなる配合物に水を加え、さらに
発泡剤を添加してスラリーを作製し、次いでこのスラリ
ーを型枠に注入して発泡させ所定時間経過後に半可塑性
状態で所望寸法に切断し、その後オートクレーブに入れ
て高温高圧で水蒸気養生することを前記課題の解決手段
とした。In the improved portland cement according to claim 1, wherein the SUMMARY OF THE INVENTION The present invention is a Portland cement 3CaO · SiO 2 content of 45 wt% to 70 wt%, and the particle size of the cement is adjusted cement The solution of the above-mentioned problem is that the n value of is not less than 1.100. In the improved Portland cement according to claim 2, the n value of the cement is 1.100 or more and 1.500 or less, and the fineness is 3000 cm 2 / blaine specific surface area.
g to 10,000 cm 2 / g was set as a means for solving the above-mentioned problem. In the method for producing ALC according to claim 3, water is added to a composition comprising the improved Portland cement, a siliceous raw material powder and a calcareous raw material powder, and a foaming agent is further added to form a slurry. The solution to the above problem was to inject the slurry into a mold, foam it, cut it into desired dimensions in a semi-plastic state after a lapse of a predetermined time, and then put it in an autoclave and steam cure at high temperature and high pressure.
【０００８】ここで、本発明におけるセメントのｎ値
は、レーザー回折式粒度分布測定機（商品名：マイクロ
トラック）により測定した各ふるい残分（体積％）測定
値の中で、ふるい残分が１０体積％以上〜９０体積％以
下の範囲に含まれる測定期間を、Ｒｏｓｉｎ−Ｒａｍｍ
ｌｅｒ式によって補間して得られる粒度分布から算出さ
れるものとする。Here, the n value of the cement in the present invention is such that, among the measured values of the sieve residue (vol%) measured by a laser diffraction type particle size distribution analyzer (trade name: Microtrac), the sieve residue is The measurement period included in the range of 10% by volume or more and 90% by volume or less was determined by Rosin-Ramm.
It is calculated from the particle size distribution obtained by interpolation using the ler equation.
【０００９】[0009]
【作用】従来のポルトランドセメントは、通常、焼成ク
リンカーをボールミルや竪型ミルにより非常に多様な粒
度分布を有する微粉末に粉砕することによって得られ
る。よって、全ての市販のポルトランドセメントは、そ
の粒度分布が広い範囲にわたっており、具体的にはサブ
ミクロンから約１００ミクロンの連続的粒度分布を有し
ており、セメントのｎ値は低い値となり、１．１００未
満である。本発明者らの研究結果より、セメントのｎ値
が高く、特に、セメントのｎ値が１．１００以上〜１．
５００以下の範囲内であると、セメントスラリーの初期
における粘性が低いものとなり、かつ中期における硬化
速度が速くなることが明らかになっている。The conventional Portland cement is usually obtained by pulverizing a calcined clinker with a ball mill or a vertical mill into fine powder having a very diverse particle size distribution. Thus, all commercially available Portland cements have a wide range of particle size distributions, specifically, a continuous particle size distribution from sub-micron to about 100 microns, and the cement has a low n-value and 1 Less than 100. From the research results of the present inventors, the n value of cement is high, and particularly, the n value of cement is 1.100 or more to 1.
It is clear that when the content is within the range of 500 or less, the viscosity of the cement slurry in the initial stage is low, and the curing speed in the middle stage is high.
【００１０】すなわち、本発明における請求項１記載の
改良ポルトランドセメントによれば、セメントの粒度が
調整されてセメントのｎ値が１．１００以上であること
から、該改良ポルトランドセメントを含有してなるスラ
リーの初期における粘度が低いものとなるとともに、中
期における硬化速度が早くなり、かつ短期強度発現性お
よび長期強度発現性のいずれもが大である３ＣａＯ・Ｓ
ｉＯ2 の含有量が４５重量％以上であることから、早期
に十分な硬度に達するとともに、その硬度が長く維持さ
れる。なお、３ＣａＯ・ＳｉＯ2 の含有量については、
より多い方が強度発現性が大となり好ましいものの、７
０重量％程度がセメント製造上の製造限界であり、それ
以上含有させるのは現状では極めて困難である。That is, according to the improved Portland cement of the first aspect of the present invention, since the particle size of the cement is adjusted and the n value of the cement is 1.100 or more, the cement contains the improved Portland cement. 3CaO.S, in which the viscosity in the initial stage of the slurry is low, the curing speed in the middle stage is fast, and both the short-term strength development and the long-term strength development are large.
Since the content of iO 2 is 45% by weight or more, sufficient hardness is reached early and the hardness is maintained for a long time. In addition, regarding the content of 3CaO · SiO 2 ,
Although a larger amount is preferable because the strength development is large, 7 is preferable.
About 0% by weight is the production limit in cement production, and it is extremely difficult at present to contain more than 0% by weight.
【００１１】請求項２記載の改良ポルトランドセメント
によれば、セメントの粒度調整によりセメントのｎ値が
１．１００以上〜１．５００以下となるので、該改良ポ
ルトランドセメントから得られるスラリーの初期におけ
る粘度が低いものとなり、かつ中期における硬化速度が
早くなる。また、粉末度がブレーン比表面積で３０００
ｃｍ2／ｇ以上であるので、該改良ポルトランドセメン
トから得られるスラリーの、発泡後所定時間経過した後
の硬度が十分に高くなるとともに、その硬度が十分な時
間維持される。According to the improved Portland cement, the n value of the cement becomes 1.100 or more and 1.500 or less by adjusting the particle size of the cement. Therefore, the initial viscosity of the slurry obtained from the improved Portland cement is improved. And the curing speed in the middle stage is increased. The fineness is 3,000 in terms of Blaine specific surface area.
Since it is not less than cm 2 / g, the hardness of the slurry obtained from the modified Portland cement after a predetermined time has elapsed after foaming becomes sufficiently high, and the hardness is maintained for a sufficient time.
【００１２】請求項３記載のＡＬＣの製造方法によれ
ば、請求項１又は２記載の改良ポルトランドセメントを
用いて製造するので、得られたスラリーの初期の粘度が
低く、しかもこのスラリーの、発泡後所定時間経過した
後の硬度が十分に高くなるとともに、その硬度が十分な
時間維持される。According to the method for producing ALC according to the third aspect, since the production is carried out using the improved Portland cement according to the first or second aspect, the initial viscosity of the obtained slurry is low, and furthermore, the foaming of the slurry is carried out. After the elapse of a predetermined time, the hardness becomes sufficiently high, and the hardness is maintained for a sufficient time.
【００１３】[0013]
【実施例】ポルトランドセメントクリンカーに石膏を加
えて粉砕し、３ＣａＯ・ＳｉＯ2含有量が６１重量％、
セメントのＳＯ3量が３重量％、ブレーン比表面積が４
５２０ｃｍ2／ｇ、セメントのｎ値が１．１５８の改良
ポルトランドセメントを得た。この改良ポルトランドセ
メントと、市販の普通ポルトランドセメント、および早
強ポルトランドセメントをそれぞれ用い、同一の原料配
合、水比でスラリーを調製し、これらスラリーの環境温
度５０℃における反応時間とセメント反応率との関係を
調べ、得られた結果を図１に示す。EXAMPLE Gypsum was added to Portland cement clinker and pulverized to give a 3CaO.SiO 2 content of 61% by weight.
The SO 3 content of cement is 3% by weight, and the specific surface area of Blaine is 4
An improved Portland cement with 520 cm 2 / g and an cement n-value of 1.158 was obtained. Using this improved Portland cement, commercially available ordinary Portland cement, and early-strength Portland cement, respectively, a slurry was prepared with the same raw material blending and water ratio. The relationship was examined and the results obtained are shown in FIG.
【００１４】図１より、本発明品である改良ポルトラン
ドセメントから得られたスラリーは、その初期における
反応率が低いことから、低粘度でありしたがってその流
動性がよいことが推測される。また、早強セメントより
は遅いものの、普通ポルトランドセメントに比べると十
分に中期における硬化速度が早く、したがってピアノ線
で切断可能な半可塑性体の硬度に達する時間が、普通ポ
ルトランドセメントに比べ十分に早くなることが推測さ
れる。From FIG. 1, it is presumed that the slurry obtained from the improved Portland cement of the present invention has a low viscosity at the initial stage, and therefore has a low viscosity and therefore good fluidity. Also, although slower than the early strength cement, the curing speed in the middle stage is sufficiently faster than ordinary Portland cement, and the time to reach the hardness of the semi-plastic body which can be cut with a piano wire is sufficiently faster than ordinary Portland cement. It is supposed to be.
【００１５】[0015]
【発明の効果】以上説明したように本発明における請求
項１記載の改良ポルトランドセメントは、セメントの粒
度が調整されてセメントのｎ値が１．１００以上である
から、該改良ポルトランドセメントを含有してなるスラ
リーの初期における粘度が低いものとなり、よって成形
性が向上し、複雑な形状に成形することが可能になる。
また、短期強度発現性および長期強度発現性のいずれも
が大である３ＣａＯ・ＳｉＯ2 の含有量が４５重量％以
上であることから、早期に十分な硬度に達するととも
に、その硬度が長く維持され、したがってＡＬＣ製造用
のセメントとして極めて好適となる。請求項２記載の改
良ポルトランドセメントは、セメントの粒度調整により
セメントのｎ値が１．１００以上〜１．５００以下の範
囲内であるので、セメントペーストの軟度水量の低減お
よび混和剤の効果の向上を図ることができ、あるいは水
和発熱速度を著しく低下させることができる。As described above, the improved portland cement according to the first aspect of the present invention contains the improved portland cement because the particle size of the cement is adjusted and the n value of the cement is 1.100 or more. The initial viscosity of the resulting slurry is low, so that the moldability is improved and it is possible to mold into a complicated shape.
In addition, since the content of 3CaO.SiO 2 , which is high in both short-term strength development and long-term strength development, is 45% by weight or more, sufficient hardness is reached early and the hardness is maintained for a long time. Therefore, it is extremely suitable as a cement for ALC production. In the improved Portland cement according to claim 2, since the n value of the cement is in the range of 1.100 or more to 1.500 or less by adjusting the particle size of the cement, the cement paste has a reduced softening water amount and an effect of the admixture. It can be improved or the hydration heat generation rate can be significantly reduced.
【００１６】請求項３記載のＡＬＣの製造方法は、請求
項１又は２記載の改良ポルトランドセメントを用いて製
造するものであるから、得られたスラリーの初期の粘度
が低く、しかもこのスラリーの、発泡後所定時間経過し
た後の硬度が十分に高くなるとともに、その硬度が十分
維持され、よってスラリーを型枠内に注入する際には水
と原料との分離が生じることが防止され、かつ可塑性状
態となりピアノ線での切断が可能となるまでの時間が短
縮されるとともに、切断が可能な時間が長くなり、した
がって生産性、作業性に優れたものとなる。また、特に
ピアノ線での切断が可能になるまでの時間が短縮される
ことから、スラリーを型枠に注入した後、脱型してオー
トクレーブに入れるまでの時間が短縮でき、よって、従
来切断処理待ちの型枠を多く並べて置いていたのを、切
断処理待ちの時間が少なくなることからスラリーを入れ
た型枠を置くための敷地を少なくすることができ、これ
により工場等の敷地を今以上に有効に活用することがで
きる。In the method for producing ALC according to claim 3, since the production is performed using the improved portland cement according to claim 1 or 2, the initial viscosity of the obtained slurry is low, and The hardness after the elapse of a predetermined time after foaming becomes sufficiently high, and the hardness is sufficiently maintained. Therefore, when the slurry is injected into the mold, separation of water and raw materials is prevented, and plasticity is reduced. The time required for cutting into a state where cutting with a piano wire becomes possible is shortened, and the time during which cutting can be performed is lengthened, so that productivity and workability are improved. In addition, since the time until cutting with a piano wire becomes possible is particularly shortened, the time from when the slurry is poured into the mold to when it is released from the mold and put into the autoclave can be shortened. Although many waiting forms were placed side by side, the time required for cutting processing is reduced, so the site for placing the formwork containing slurry can be reduced, which makes the site of factories etc. more than now Can be used effectively.
【図１】反応時間とセメント反応率との関係を示すグラ
フである。FIG. 1 is a graph showing a relationship between a reaction time and a cement reaction rate.
フロントページの続き (72)発明者 佐々木 雅彦 千葉県船橋市豊富町585番地 住友セメ ント株式会社中央研究所内 (56)参考文献 特開 平６−206745（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C04B 7/02 - 7/04 C04B 7/13 C04B 38/02Continuation of front page (72) Inventor Masahiko Sasaki 585 Tomimachi, Funabashi-shi, Chiba Sumitomo Cement Co., Ltd. Central Research Laboratory (56) References JP-A-6-206745 (JP, A) (58) Fields investigated ( Int.Cl. 6 , DB name) C04B 7/02-7/04 C04B 7/13 C04B 38/02
Claims (3)
〜７０重量％のポルトランドセメントであり、セメント
の粒度が調整されてセメントのｎ値が１．１００以上で
ある改良ポルトランドセメント。1. The content of 3CaO.SiO 2 is 45% by weight.
70% by weight of Portland cement, wherein the particle size of the cement is adjusted and the n value of the cement is 1.100 or more.
トにおいて、セメントの粒度調整によるセメントのｎ値
が１．１００以上〜１．５００以下であり、かつ粉末度
がブレーン比表面積で３０００ｃｍ2／ｇ〜１００００
ｃｍ2／ｇである改良ポルトランドセメント。2. The improved Portland cement according to claim 1, wherein the n value of the cement by adjusting the particle size of the cement is 1.100 or more and 1.500 or less, and the fineness is 3000 cm 2 / g or more in terms of Blaine specific surface area. 10,000
An improved Portland cement of cm 2 / g.
セメントと、ケイ酸質原料粉末および石灰質原料粉末と
からなる配合物に水を加え、さらに発泡剤を添加してス
ラリーを作製し、次いでこのスラリーを型枠に注入して
発泡させ所定時間経過後に半可塑性状態で所望寸法に切
断し、その後オートクレーブに入れて高温高圧で水蒸気
養生することを特徴とするＡＬＣの製造方法。3. A mixture of the improved portland cement according to claim 1 and a mixture of a siliceous raw material powder and a calcareous raw material powder, water is added, and a foaming agent is further added to form a slurry. A method for producing ALC, comprising injecting a slurry into a mold, foaming the foam, cutting it into a desired size in a semi-plastic state after a lapse of a predetermined time, and then putting the slurry into an autoclave and performing steam curing at a high temperature and a high pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5350347A JP2846232B2 (en) | 1993-12-28 | 1993-12-28 | Improved Portland cement and method for producing ALC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5350347A JP2846232B2 (en) | 1993-12-28 | 1993-12-28 | Improved Portland cement and method for producing ALC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07196345A JPH07196345A (en) | 1995-08-01 |
| JP2846232B2 true JP2846232B2 (en) | 1999-01-13 |
Family
ID=18409877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5350347A Expired - Fee Related JP2846232B2 (en) | 1993-12-28 | 1993-12-28 | Improved Portland cement and method for producing ALC |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2846232B2 (en) |
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|---|---|---|---|---|
| KR101486651B1 (en) * | 2013-07-26 | 2015-01-29 | (주) 에스와이씨 | Method manufacturing for a mineral hydrate insulation panel |
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1993
- 1993-12-28 JP JP5350347A patent/JP2846232B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07196345A (en) | 1995-08-01 |
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