JPH06206745A - Improved portland cement and production of alc - Google Patents
Improved portland cement and production of alcInfo
- Publication number
- JPH06206745A JPH06206745A JP30416792A JP30416792A JPH06206745A JP H06206745 A JPH06206745 A JP H06206745A JP 30416792 A JP30416792 A JP 30416792A JP 30416792 A JP30416792 A JP 30416792A JP H06206745 A JPH06206745 A JP H06206745A
- Authority
- JP
- Japan
- Prior art keywords
- portland cement
- 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.)
- Granted
Links
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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
- C04B7/527—Grinding ; After-treatment of ground cement obtaining cements characterised by fineness, e.g. by multi-modal particle size distribution
Abstract
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
して微粉部分を減少させることにより、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。FIELD OF THE INVENTION The present invention relates to an improved Portland cement having an improved initial fluidity and an accelerated hardening by adjusting the particle size of cement to reduce the fine powder portion, and the production of ALC using the same. Regarding the method.
【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 aerated concrete)
In order to produce, a mixture of siliceous raw material powder such as silica stone and sand, calcareous raw material powder such as quicklime, and Portland cement is mixed with water, and then aluminum powder is added. A foaming agent is added to the slurry to prepare a slurry, which is then poured into a mold to foam, and when a plastic state has been reached for a predetermined time, the slurry is cut into a desired size with a piano wire, which is then cut. The method of putting into a autoclave and steam-curing at high temperature and high pressure to obtain a product is adopted.
【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。By the way, a preferable condition in such a manufacturing method is that the slurry obtained from the ALC manufacturing compound has a low viscosity until it is hardened after being poured into the mold, and has a hardness that allows cutting faster. As soon as it is reached, its hardness is maintained as long as possible. This is because if the slurry becomes highly viscous, foaming will be disturbed, the size of the bubbles will be non-uniform, and the distribution will be biased.
【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。On the other hand, if the time to reach the cuttable hardness becomes long, the time from the foaming process to the cutting process is extended and the productivity deteriorates, and if the cuttable time becomes short, the cutting workable time is limited. This is because the degree of freedom of work is rather reduced. Then, in order to satisfy the above-mentioned conditions, it is conceivable that, for example, the water ratio is increased in order to reduce the viscosity, or so-called early-strength cement is used in order to cure quickly.
【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下させれば硬
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、硬化速度が速すぎ、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 a cement composition, if the viscosity of the slurry is reduced, the curing time tends to be long, and if the slurry is rapidly cured, the time to maintain the cuttable hardness tends to be short. Therefore, even if the water ratio is increased in order to reduce the viscosity, it takes a long time to cure and the productivity deteriorates. Further, even if only the high-strength cement is used, the hardening speed is too fast, the time for maintaining the hardness at which cutting is possible is shortened, the cutting possible time is shortened, and the workability is deteriorated.
【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。The present invention has been made in view of the above circumstances, and an object of the present invention is to maintain a low viscosity until it hardens after pouring a slurry, and reaches a hardness at which cutting can be quickly performed, and the hardness becomes long. 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微粉部分が除去さ
れてな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、セメントの粒度調
整による微粉部分の除去が、粒径１μｍ〜１５μｍの範
囲の分級点で行われ、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。The improved Portland cement according to claim 1 of the present invention is a Portland cement having a 3CaO.SiO 2 content of 45% by weight to 70% by weight, and the cement particle size is adjusted to obtain fine powder. The removal of the portion was taken as a means for solving the above problems. In the improved portland cement according to claim 2, removal of the fines portion by the particle size adjustment of the cement takes place on the classification point in the range of particle sizes 1Myuemu～15myuemu, and 3000cm 2 / g~10000cm 2 fineness is in Blaine specific surface area / G is the means for solving the above-mentioned problems. In the method for producing an ALC according to claim 3, water is added to a mixture of the improved Portland cement, a siliceous raw material powder and a calcareous raw material powder to further add a foaming agent to prepare a slurry, and then the slurry is prepared. The means for solving the above-mentioned problems was to inject the slurry into a mold, foam it, cut it into a desired size in a semi-plastic state after a predetermined time, and then put it in an autoclave and steam-cure it at high temperature and high pressure.
【０００８】すなわち、本発明の改良ポルトランドセメ
ントは、ポルトランドセメントの粒度を調整し、微粉部
分を除去したことを特徴とするものであり、特に分級点
を粒径１μｍから１５μｍの範囲内とし、この分級点以
下の微粉部分を除去することを特徴とするものである。
なお、本発明において例えば分級点を粒径１μｍとした
場合の微粉部分の除去とは、分級点を１μｍにしてそれ
以下の微粉部分の少なくとも一部を分離除去するという
意味であり、必ずしも粒径１μｍ以下の粒子全部を除去
する必要はなく、従来のポルトランドセメントに比べ十
分に分級点以下の微粉部分が少なくなっていればよい。That is, the improved Portland cement of the present invention is characterized in that the particle size of the Portland cement is adjusted and the fine powder portion is removed. Particularly, the classification point is set within the range of 1 μm to 15 μm in particle size. The feature is that the fine powder portion below the classification point is removed.
In the present invention, for example, the removal of the fine powder portion when the classification point is set to 1 μm means that the classification point is set to 1 μm and at least a part of the fine powder portion below that is separated and removed. It is not necessary to remove all particles of 1 μm or less, as long as the fine powder portion below the classification point is sufficiently smaller than that of conventional Portland cement.
【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
ているのである。本発明者らの研究結果より、焼成クリ
ンカーが粉砕されて形成された微粉部分は水和反応が速
いばかりでなく、該微粉部分には活性な成分（カルシウ
ムアルミネート、硫酸アルカリ、遊離石灰、石膏など）
が凝集していることが明らかになっている。したがっ
て、従来のポルトランドセメントの微粉部分を除去して
製造した、本発明の改良ポルトランドセメントは、従来
のポルトランドセメントにおける、単に粉末度が粗いも
のとは組成の上から全く異なるものとなる。The conventional Portland cement is usually obtained by pulverizing a calcined clinker into a fine powder having a very wide variety of particle size distribution by a ball mill or a vertical mill. Thus, all commercially available Portland cements have a wide range of particle size distributions, specifically a submicron to about 100 micron continuous particle size distribution. According to the research results of the present inventors, the fine powder portion formed by crushing the calcined clinker not only has a fast hydration reaction, but also has an active component (calcium aluminate, alkali sulfate, free lime, gypsum) in the fine powder portion. Such)
Have been found to be aggregated. Therefore, the improved Portland cement of the present invention produced by removing the fine powder portion of the conventional Portland cement is completely different in composition from that of the conventional Portland cement, which is simply coarse.
【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、水和反応が速く活
性な微粉部分が除去されていることから、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・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、７０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 according to claim 1 of the present invention, the hydrated reaction is fast and the active fine powder portion is removed. Therefore, in the initial stage of the slurry containing the improved Portland cement. The viscosity is low, and both the short-term strength development and the long-term strength development are large. Since the content of 3CaO.SiO 2 is 45% by weight or more, sufficient hardness is reached early and Hardness is maintained for a long time. Regarding the content of 3CaO / SiO 2 , the higher the content, the better the strength development.
The degree is the production limit in cement production, and it is extremely difficult to add more than that at present.
【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る微粉部分の除去が
粒径１μｍ〜１５μｍを分級点として行われるので、例
えば粒径１〜５μｍ以下の微粒子を除去することによ
り、セメントペーストの軟度水量の低減および混和剤の
効果の向上が達成でき、また粒径５〜１５μｍ以下の微
粒子を除去することにより、水和発熱速度を著しく低下
させることが可能となる。また、粉末度がブレーン比表
面積で３０００ｃｍ2／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 described in claim 2, the fine powder portion is removed by adjusting the particle size of the cement by using the particle size of 1 μm to 15 μm as the classification point, so that the fine particles having the particle size of 1 to 5 μm or less are removed. As a result, the softening water content of the cement paste can be reduced and the effect of the admixture can be improved, and by removing fine particles having a particle size of 5 to 15 μm or less, the heat rate of hydration can be significantly reduced. . Further, since the fineness of powder is not less than 3000 cm 2 / g in terms of Blaine specific surface area, the slurry obtained from the improved Portland cement has a sufficiently high hardness after a lapse of a predetermined time after foaming, and the hardness is sufficient for a sufficient time. Maintained.
【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 described in claim 3, since the improved portland cement according to claim 1 or 2 is used for production, the initial viscosity of the obtained slurry is low, and the foaming of this slurry is performed. The hardness becomes sufficiently high after a predetermined time elapses thereafter, and the hardness is maintained for a sufficient time.
【００１３】[0013]
【実施例】３ＣａＯ・ＳｉＯ2 含有量が６１重量％、ブ
レーン比表面積が５１１０ｃｍ2／ｇのポルトランドセ
メントを、分級点１μｍ、３μｍでそれぞれ分級してそ
の微粉側を除去し、ブレーン比表面積が４５８０ｃｍ2
／ｇ（分級点１μｍ）、４２３０ｃｍ2／ｇ（分級点３
μｍ）の改良ポルトランドセメントを得た。これら改良
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。な
お、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２種は、共にほぼ同一の反応状態を示した
ことから、図１においては１本の線にまとめて記した。[Example] Portland cement having a 3CaO / SiO 2 content of 61% by weight and a Blaine specific surface area of 5110 cm 2 / g was classified at a classification point of 1 μm and 3 μm to remove the fine powder side, and the Blaine specific surface area was 4580 cm 2.
/ G (classification point 1 μm), 4230 cm 2 / g (classification point 3
μm) modified Portland cement was obtained. Using these modified Portland cement, commercially available ordinary Portland cement, and early-strength Portland cement, slurry was prepared with the same raw material composition and water ratio, and the reaction time and the cement reaction rate of these slurries at an environmental temperature of 50 ° C. The relationship was investigated and the results obtained are shown in FIG. The two slurries obtained from the improved Portland cement, which is a product of the present invention, both showed almost the same reaction state, so that they are collectively shown as one line 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, which is the product of the present invention, has a low reaction rate in the initial stage, and therefore has a low viscosity and therefore a good fluidity. Although it is slower than early-strength cement, it cures faster in the middle period than ordinary Portland cement, and therefore the time to reach the hardness of a semi-plastic material that 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、活性な微粉部
分が除去されたものであるから、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・ＳｉＯ
2 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る微粉部分の減少が粒径１μｍ以
下〜粒径１５μｍ以下の範囲内で行われるので、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。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
度が十分な時間維持され、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。As described above, since the improved Portland cement according to claim 1 of the present invention is one in which the active fine powder portion is removed, the viscosity of the slurry containing the improved Portland cement at the initial stage is increased. Is low, so that the moldability is improved and it is possible to mold into a complicated shape. In addition, 3CaO · SiO, which has both short-term strength development and long-term strength development
Since the content of 2 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, the fine powder portion is reduced by adjusting the particle size of the cement within a range of a particle size of 1 μm or less to a particle size of 15 μm or less. Therefore, the softening water content of the cement paste and the effect of the admixture are improved. Can be improved, or the rate of heat of hydration can be significantly reduced. Since the method for producing ALC according to claim 3 is produced by using the improved portland cement according to claim 1 or 2, the initial viscosity of the obtained slurry is low, and the slurry has a predetermined viscosity after foaming. The hardness after the lapse of time becomes sufficiently high, and the hardness is maintained for a sufficient time. Therefore, when pouring the slurry into the mold, the separation of water and the raw material is prevented, and the plasticity state is maintained. In addition to shortening the time until cutting with a piano wire becomes possible, the cutting time becomes longer, and therefore productivity and workability are excellent. In addition, since the time required to cut with a piano wire is particularly shortened, the time from pouring the slurry into the mold and then demolding it into the autoclave can be shortened. A lot of waiting formwork was placed side by side, but because the waiting time for cutting processing was reduced, it was possible to reduce the site for placing the formwork containing the slurry. Can be used effectively.
【図面の簡単な説明】[Brief description of drawings]
【図１】反応時間とセメント反応率との関係を示すグラ
フ。FIG. 1 is a graph showing the relationship between reaction time and cement reaction rate.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 22:04） 2102−4Ｇ (72)発明者 佐藤 雅男 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─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI technical display location C04B 22:04) 2102-4G (72) Inventor Masao Sato Sumitomo Semen 585, Tomimachi, Funabashi, Chiba Central Research Institute
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微粉部分が除去されてなる改良ポル
トランドセメント。1. The content of 3CaO.SiO 2 is 45% by weight.
An improved Portland cement having 70% by weight of Portland cement, in which the particle size of the cement is adjusted and the fine powder portion is removed.
トにおいて、セメントの粒度調整による微粉部分の除去
が、粒径１μｍ〜１５μｍの範囲の分級点で行われ、か
つ粉末度がブレーン比表面積で３０００ｃｍ2／ｇ〜１
００００ｃｍ2／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 fine powder portion is removed by adjusting the particle size of the cement at a classification point within a particle size range of 1 μm to 15 μm, and the fineness is 3000 cm 2 in terms of Blaine specific surface area. / G ~ 1
Modified Portland cement which is 0000 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. Water is added to a mixture comprising the improved Portland cement according to claim 1 and a siliceous raw material powder and a calcareous raw material powder to further add a foaming agent to prepare a slurry. A method for producing ALC, which comprises injecting a slurry into a mold, foaming it, cutting it into a desired size in a semi-plastic state after a lapse of a predetermined time, and then putting it in an autoclave and steam-curing at high temperature and high pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30416792A JP3183730B2 (en) | 1992-11-13 | 1992-11-13 | Improved Portland cement and method for producing ALC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30416792A JP3183730B2 (en) | 1992-11-13 | 1992-11-13 | Improved Portland cement and method for producing ALC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06206745A true JPH06206745A (en) | 1994-07-26 |
| JP3183730B2 JP3183730B2 (en) | 2001-07-09 |
Family
ID=17929856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30416792A Expired - Lifetime JP3183730B2 (en) | 1992-11-13 | 1992-11-13 | Improved Portland cement and method for producing ALC |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3183730B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024791A (en) * | 1993-03-25 | 2000-02-15 | Mitomo Shoji Kabushiki Kaisha | Molded bodies of cement type admixed and kneaded material having excellent bending strength and compression strength and a method of manufacturing the same |
| JP2000191349A (en) * | 1998-12-25 | 2000-07-11 | Sumitomo Metal Mining Co Ltd | Portland cement for production of alc and production of alc |
| JP2017039613A (en) * | 2015-08-17 | 2017-02-23 | 住友金属鉱山シポレックス株式会社 | Preparation method of autoclaved lightweight concrete slurry and manufacturing method of autoclaved lightweight concrete panel |
| JP2019119666A (en) * | 2018-01-11 | 2019-07-22 | デンカ株式会社 | High strength cement |
| WO2019142775A1 (en) * | 2018-01-16 | 2019-07-25 | デンカ株式会社 | High strength grout composition and high strength grout mortar using same |
-
1992
- 1992-11-13 JP JP30416792A patent/JP3183730B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024791A (en) * | 1993-03-25 | 2000-02-15 | Mitomo Shoji Kabushiki Kaisha | Molded bodies of cement type admixed and kneaded material having excellent bending strength and compression strength and a method of manufacturing the same |
| JP2000191349A (en) * | 1998-12-25 | 2000-07-11 | Sumitomo Metal Mining Co Ltd | Portland cement for production of alc and production of alc |
| JP2017039613A (en) * | 2015-08-17 | 2017-02-23 | 住友金属鉱山シポレックス株式会社 | Preparation method of autoclaved lightweight concrete slurry and manufacturing method of autoclaved lightweight concrete panel |
| JP2019119666A (en) * | 2018-01-11 | 2019-07-22 | デンカ株式会社 | High strength cement |
| WO2019142775A1 (en) * | 2018-01-16 | 2019-07-25 | デンカ株式会社 | High strength grout composition and high strength grout mortar using same |
| JPWO2019142775A1 (en) * | 2018-01-16 | 2021-01-14 | デンカ株式会社 | High-strength grout material composition and high-strength grout mortar using it |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3183730B2 (en) | 2001-07-09 |
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