JPH0664951A - Production of cement having low separability and production of concrete having low separability - Google Patents

Production of cement having low separability and production of concrete having low separability

Info

Publication number
JPH0664951A
JPH0664951A JP22023692A JP22023692A JPH0664951A JP H0664951 A JPH0664951 A JP H0664951A JP 22023692 A JP22023692 A JP 22023692A JP 22023692 A JP22023692 A JP 22023692A JP H0664951 A JPH0664951 A JP H0664951A
Authority
JP
Japan
Prior art keywords
separation
reducing agent
cement
concrete
water
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.)
Withdrawn
Application number
JP22023692A
Other languages
Japanese (ja)
Inventor
Hirohide Chiba
博英 千葉
Taichi Imahashi
太一 今橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP22023692A priority Critical patent/JPH0664951A/en
Publication of JPH0664951A publication Critical patent/JPH0664951A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/36Manufacture of hydraulic cements in general
    • C04B7/48Clinker treatment
    • C04B7/52Grinding ; After-treatment of ground cement

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE:To reduce an amount of a separation-reducing agent used in obtaining a compaction-free concrete. CONSTITUTION:In a method for producing concrete by kneading cement, aggregate, water reducing agent and water, cement having low separability obtained by mixing a cement clinker with a separation-reducing agent and crushing the mixture is used as the cement. Thereby, the separation-reducing agent can more effectively be dispersed into the cement and sufficient separation reducing effect can be obtained in a small amount of the separation reducing agent used. Since an amount of the separation reducing agent used is reduced, catching of air in kneading is reduced and a defoaming agent is made unnecessary. The producing method is free from problems of lowering of strength due to air entrainment. Since the producing method need not the addition of many kinds of admixtures and additives, blending and concrete kneading operation are reduced and the production is made inexpensive. Poor execution, oscillation in forming, noise pollution and shortage of man power are solved by making compaction unnecessary.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は低分離性セメントの製造
方法及び低分離性コンクリートの製造方法に係り、特
に、締固め不要コンクリートの製造に好適な低分離性セ
メントの製造方法及び低分離性コンクリートの製造方法
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a low-separation cement and a method for producing a low-separation concrete, and particularly to a method for producing a low-separation cement and a low-separation method suitable for producing compaction-free concrete. The present invention relates to a method for manufacturing concrete.

【0002】[0002]

【従来の技術】従来、コンクリート製品は、一般に、ポ
ルトランドセメントを主成分とするセメント系粉体に、
水、骨材及び必要に応じて減水性を有する混和剤(減水
剤)等を適当量混練して比較的硬めのコンクリート混練
物を得、これを型枠に投入した後、或いは投入する際、
型枠中のコンクリート混練物が密実になるように振動等
の外力による締固めを十分に行ない製造されている。
2. Description of the Related Art Conventionally, concrete products are generally cement-based powders containing Portland cement as a main component.
Water, aggregate and, if necessary, an admixture having a water-reducing property (water-reducing agent), etc., is kneaded in an appropriate amount to obtain a relatively hard concrete kneaded product, which is put into a formwork, or when being put,
It is manufactured by sufficient compaction by external force such as vibration so that the concrete kneaded product in the formwork becomes solid.

【0003】[0003]

【発明が解決しようとする課題】上記従来のコンクリー
ト製品の製造方法においては、型枠に流し込んだコンク
リート混練物を密実にするために、振動等の外力により
締固めを行なっているが、この振動締固めが不十分であ
ると、十分な性能を有するコンクリートが得られないと
いう問題がある。このため締固めを行なわずに所望のコ
ンクリートを得たいとの要望がある。一方で、コンクリ
ート製品工場ではこの締固め時の振動による騒音公害も
問題となっている上に、コンクリート製品工場の人手不
足に対処するため、振動締固め工程を省きたいという要
望がある。
In the above-described conventional method for producing a concrete product, in order to make the concrete kneaded product poured into the mold compact, it is compacted by an external force such as vibration. If the compaction is insufficient, there is a problem that concrete having sufficient performance cannot be obtained. Therefore, there is a demand to obtain a desired concrete without compaction. On the other hand, in concrete product factories, noise pollution due to vibration at the time of compaction has become a problem, and there is a demand for omitting the vibration compaction process in order to cope with the shortage of manpower in concrete product factories.

【0004】締固め不要コンクリート混練物の製造に要
求される性状としては、型枠の隅々まで行き渡るような
高い流動性を有することと、更に、コンクリート混練物
中の各材料が分離しないような分離抵抗性を有すること
の2点である。
The properties required for the production of a compaction-free concrete kneaded product are that it has a high fluidity such that it spreads to every corner of the form, and that the materials in the concrete kneaded product do not separate. There are two points of having separation resistance.

【0005】そこで、締固め不要コンクリート混練物を
得るためには、減水効果を有する混和剤を添加して高い
流動性を確保すると共に、分離低減剤の添加により分離
抵抗性を確保することが考えられる。
Therefore, in order to obtain a compaction-free concrete kneaded product, it is considered to add an admixture having a water-reducing effect to ensure high fluidity and to add a separation reducing agent to ensure separation resistance. To be

【0006】しかしながら、分離低減剤を単に他の材料
と共に混練した場合、十分な分離抵抗性を得るには、分
離低減剤必要量が非常に多い。このため、 分離低減剤コストが高くつく。 分離低減剤をコンクリート混練物中に分散性良く混
練することが困難であり、混練に要する時間も長くな
る。 混練時の空気の巻き込みも多く、空気泡を取り除く
ための消泡剤を必要とする。 混練時の空気連行による製品強度の低下のおそれが
ある。 といった問題がある。因みに、分離低減剤をコンクリー
ト混練時に添加する場合、分離低減剤はコンクリート1
3 に対して1kg程度もの大量添加が必要とされる場
合もある。
However, when the separation reducing agent is simply kneaded with other materials, the necessary amount of the separation reducing agent is very large in order to obtain sufficient separation resistance. Therefore, the cost of the separation reducing agent is high. It is difficult to knead the separation reducing agent in the concrete kneaded product with good dispersibility, and the time required for kneading becomes long. Air is often entrained during kneading and requires an antifoaming agent to remove air bubbles. There is a risk that the product strength will decrease due to air entrainment during kneading. There is such a problem. By the way, when the separation reducing agent is added during concrete kneading, the separation reducing agent is concrete 1
In some cases, it is necessary to add as much as 1 kg to m 3 .

【0007】本発明は上記従来の問題点を解決し、分離
低減剤の使用量を大幅に低減することができる低分離性
セメントの製造方法及び低分離性コンクリートの製造方
法を提供することを目的とする。
An object of the present invention is to solve the above-mentioned conventional problems and to provide a method for producing a low-separation cement and a method for producing a low-separation concrete, which can significantly reduce the amount of the separation reducing agent used. And

【0008】[0008]

【課題を解決するための手段】請求項1の低分離性セメ
ントの製造方法は、セメントクリンカーを粉砕してセメ
ントを製造する方法において、粉砕されるセメントクリ
ンカーに分離低減剤を添加し、セメントクリンカーの粉
砕時に分離低減剤の混合を併せて行なうようにしたこと
を特徴とする。
A method for producing a low-separation cement according to claim 1 is a method for producing a cement by crushing cement clinker, in which a separation reducing agent is added to the crushed cement clinker to obtain a cement clinker. It is characterized in that the separation reducing agent is also mixed at the time of pulverizing.

【0009】請求項2の低分離性コンクリートの製造方
法は、セメント、骨材、減水剤及び水を混練してコンク
リートを製造する方法において、該セメントとして、請
求項1の方法により得られる低分離性セメントを用いる
ことを特徴とする。
The method for producing low-separation concrete according to claim 2 is a method for producing concrete by kneading cement, aggregate, water-reducing agent and water, and the low-separation obtained by the method according to claim 1 is used as the cement. It is characterized by using a sex cement.

【0010】以下に本発明を詳細に説明する。The present invention will be described in detail below.

【0011】本発明の低分離性セメントの製造方法は、
セメントクリンカーと分離低減剤とを混合粉砕するもの
であり、本発明の低分離性コンクリートの製造方法にお
いては、このような低分離性セメントを、骨材、減水剤
及び水と混練してコンクリートを製造する。
The method for producing a low-separation cement according to the present invention is
A cement clinker and a separation reducing agent are mixed and pulverized, and in the method for producing low-separation concrete of the present invention, such low-separation cement is kneaded with an aggregate, a water reducing agent and water to form concrete. To manufacture.

【0012】本発明において使用する分離低減剤として
は特に制限はなく、メチルセルロース系分離低減剤等の
半合成水溶性高分子やアクリル系高分子分離低減剤等の
合成水溶性高分子などの一般に使用されているものの
他、本発明においては、グアーガム等の種子多糖類を有
効に使用することができる。
The separation reducing agent used in the present invention is not particularly limited, and generally used such as a semi-synthetic water-soluble polymer such as a methylcellulose-based separation reducing agent or a synthetic water-soluble polymer such as an acrylic-based polymer separation reducing agent. In addition to those described above, seed polysaccharides such as guar gum can be effectively used in the present invention.

【0013】このような分離低減剤の使用量は、用いる
分離低減剤の種類や、減水剤使用量、得られるコンクリ
ート混練物の要求特性等によっても異なるが、通常の場
合、セメントクリンカーに対して0.01〜1重量%程
度とされる。分離低減剤の使用量がセメントクリンカー
に対して0.01重量%未満では十分な分離抵抗性が得
られず、1重量%を超えると流動性が損なわれる。
The amount of such a separation reducing agent used varies depending on the type of the separation reducing agent used, the amount of the water reducing agent used, the required characteristics of the concrete kneaded product to be obtained, etc. It is set to about 0.01 to 1% by weight. When the amount of the separation reducing agent used is less than 0.01% by weight with respect to the cement clinker, sufficient separation resistance cannot be obtained, and when it exceeds 1% by weight, fluidity is impaired.

【0014】本発明の方法において、分離低減剤は、用
いるセメントクリンカーの全量と共に混合粉砕しても良
く、その一部と混合粉砕しても良い。なお、クリンカー
の粉砕時に石膏を添加しても良い。
In the method of the present invention, the separation reducing agent may be mixed and ground together with the whole amount of the cement clinker used, or may be mixed and ground together with a part thereof. Note that gypsum may be added when the clinker is crushed.

【0015】本発明の方法においては、このように予め
セメントクリンカーを分離低減剤と共に混合粉砕して得
られる低分離性セメントと、骨材、減水剤及び水、更に
必要に応じて空気調整剤、その他の添加剤、場合によっ
て分離低減剤を含まない通常のセメント等を所定割合で
混練する。
In the method of the present invention, a low-separation cement obtained by previously mixing and crushing cement clinker with a separation reducing agent, an aggregate, a water reducing agent and water, and if necessary, an air conditioner, Other additives, and in some cases ordinary cement containing no separation reducing agent, are kneaded at a predetermined ratio.

【0016】ここで、減水剤の添加量は、少な過ぎると
流動性が不足し、多過ぎると分離抵抗性が損なわれる。
従って、減水剤は、セメントに対して0.1〜5重量%
とするのが好ましい。使用する減水剤としては、従来一
般的に用いられているものをいずれも好適に使用するこ
とができる。例えば、ナフタレンスルホン酸ホルマリン
高縮合物塩系の高性能減水剤、メラミンスルホン酸系の
高性能減水剤、ポリカルボン酸塩系高分子化合物系高性
能AE減水剤、リグニンスルホン酸塩系AE減水剤、オ
キシカルボン酸塩系AE減水剤などを用いることができ
る。
Here, if the amount of the water reducing agent added is too small, the fluidity is insufficient, and if it is too large, the separation resistance is impaired.
Therefore, the water reducing agent is 0.1 to 5% by weight with respect to the cement.
Is preferred. As the water-reducing agent to be used, any of those conventionally used generally can be preferably used. For example, naphthalene sulfonate formalin high-condensation salt-based high-performance water reducing agent, melamine sulfonic acid-based high-performance water reducing agent, polycarboxylic acid salt-based polymer compound high-performance AE water reducing agent, lignin sulfonate-based AE water reducing agent An oxycarboxylic acid salt type AE water reducing agent can be used.

【0017】なお、セメントに対する骨材や混練水の量
は、従来と同様の割合とすることができる。
The amounts of aggregate and kneading water with respect to the cement can be the same as in the conventional case.

【0018】このようにして調製されたコンクリート混
練物は、振動等の外力による締固めを行なうことなく、
型枠に流し込み成形することができる。
The concrete kneaded material thus prepared can be compacted by an external force such as vibration,
It can be cast into a mold.

【0019】なお、本発明において、セメントの種類に
は特に制限はなく、普通ポルトランドセメント、その他
各種のセメントを用いることができるが、特に早強ポル
トランドセメントを用いることにより、初期強度に優れ
る締固め不要コンクリートを得ることができ、極めて有
利である。更に、セメントの種類を変えることにより、
一般コンクリート用、低発熱用等の各用途に適用するこ
とができる。また、用途に応じては、フライアッシュや
高炉スラグ粉末等の混和材の併用も可能であることは言
うまでもない。
In the present invention, the type of cement is not particularly limited, and ordinary Portland cement and various other types of cement can be used. Particularly, by using early-strength Portland cement, compaction excellent in initial strength is achieved. Unnecessary concrete can be obtained, which is extremely advantageous. Furthermore, by changing the type of cement,
It can be applied to various uses such as general concrete and low heat generation. Needless to say, an admixture such as fly ash or blast furnace slag powder can be used in combination depending on the application.

【0020】[0020]

【作用】本発明に従って、分離低減剤を予めセメントク
リンカーと混合粉砕して添加することにより、分離低減
剤をより効果的にセメント中に分散させることができ、
少量の分離低減剤使用量にて十分な分離低減効果を得る
ことが可能とされる。
In accordance with the present invention, the separation reducing agent can be more effectively dispersed in the cement by mixing and pulverizing the cement reducing agent with the cement clinker in advance and adding the mixture.
It is possible to obtain a sufficient separation reducing effect with a small amount of the separation reducing agent used.

【0021】このため、材料コストの低廉化が図れる。
その上、コンクリート混練時の空気の巻き込みも少な
く、空気泡を取り除くための消泡剤の添加が不要とな
り、経済的かつ取り扱いが容易である。また、空気連行
による強度低下の問題もない。
Therefore, the material cost can be reduced.
In addition, there is little entrapment of air during concrete kneading, and there is no need to add an antifoaming agent to remove air bubbles, which is economical and easy to handle. Further, there is no problem of strength reduction due to air entrainment.

【0022】[0022]

【実施例】以下に実施例及び比較例を挙げて、本発明を
より具体的に説明する。
EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.

【0023】実施例1〜7 表1に示すセメントのセメントクリンカーと表1に示す
分離低減剤とを、表1に示す割合で予め混合粉砕して低
分離性セメントを得た。得られた低分離性セメントと、
混練水と、細骨材及び粗骨材と、減水剤と、場合によっ
て更に表1に示す混和材を表1に示す割合で混練した。
なお、細骨材率は表1に示す通りとした。
Examples 1 to 7 The cement clinker of the cement shown in Table 1 and the separation reducing agent shown in Table 1 were mixed and pulverized in advance at the ratio shown in Table 1 to obtain low-separation cement. The obtained low-separation cement,
The kneading water, the fine aggregate and the coarse aggregate, the water reducing agent, and optionally the admixture shown in Table 1 were kneaded in the proportions shown in Table 1.
The fine aggregate ratio was as shown in Table 1.

【0024】得られたコンクリート混練物のフレッシュ
性状(スランプフロー、空気量、分離抵抗性)を調べ、
結果を表1に示した。なお、材料の分離抵抗性を判断す
る指標としては、スランプフロー試験後のコンクリート
混練物の中心部と縁端部のそれぞれのコンクリート混練
物を1kgづつ採取し、それぞれを5mmふるい上で水
洗いし、ふるい上に残った粗骨材の重量を1kgで除し
た値を求め、中心部と縁端部との差が5%以下を○、5
〜10%を△、10%以上を×とした。
The fresh properties (slump flow, air amount, separation resistance) of the obtained concrete kneaded material were examined,
The results are shown in Table 1. As an index for judging the separation resistance of the material, 1 kg of each of the concrete kneaded material of the concrete kneaded material after the slump flow test and each of the concrete kneaded materials of the edge portions were sampled and washed with water on a 5 mm sieve, The weight of the coarse aggregate remaining on the sieve was divided by 1 kg to obtain a value, and if the difference between the central portion and the edge portion was 5% or less, ○, 5
10% was designated as Δ and 10% or more was designated as x.

【0025】また、このコンクリート混練物を、振動を
加えずに型枠に流し込み成形し、流し込んだ後も振動等
の外力による締固めを行なわず、以下の条件で蒸気養生
又は標準養生を行ない、流し込み成形後から17時間後
又は28日後の圧縮強度を測定し、結果を表1に示し
た。
Further, this concrete kneaded product is cast into a mold without vibration, and after being cast, steam curing or standard curing is performed under the following conditions without compaction by external force such as vibration. The compression strength was measured 17 hours or 28 days after the casting, and the results are shown in Table 1.

【0026】蒸気養生条件 前置き:20℃で3時間 昇温:毎時20℃ 保持:60℃で3時間 降温:毎時10℃標準養生条件 成形後36時間で脱型し、20℃の水中で所定材令まで
養生した。
Steam curing conditions Preliminary: 20 ° C. for 3 hours Temperature rising: 20 ° C./hour Holding: 60 ° C. for 3 hours Cooling: 10 ° C./hour Standard curing conditions Demolding 36 hours after molding, and predetermined material in 20 ° C. water I was cured until the order.

【0027】比較例1〜4 セメントクリンカーと分離低減剤とを予め混合粉砕する
ことなく、表1に示すセメントと表1に示す分離低減剤
とを、表1に示す割合で単に混合して得られた分離低減
剤含有セメントを用いたこと以外は実施例1と同様に行
なって、フレッシュ性状及び圧縮強度を調べ、結果を表
1に示した。
Comparative Examples 1 to 4 Obtained by simply mixing the cement shown in Table 1 and the separation reducing agent shown in Table 1 at a ratio shown in Table 1 without previously mixing and crushing the cement clinker and the separation reducing agent. The fresh property and the compressive strength were examined in the same manner as in Example 1 except that the obtained separation reducing agent-containing cement was used, and the results are shown in Table 1.

【0028】比較例5〜9 セメントクリンカーと分離低減剤とを予め混合粉砕する
ことなく、表1に示す割合でコンクリート混練時に分離
低減剤を添加したこと以外は実施例1と同様に行なっ
て、フレッシュ性状及び圧縮強度を調べ、結果を表1に
示した。
Comparative Examples 5 to 9 The procedure of Example 1 was repeated, except that the cement clinker and the separation reducing agent were not mixed and pulverized in advance, but the separation reducing agent was added at the ratio shown in Table 1 during concrete kneading. The fresh properties and compressive strength were examined, and the results are shown in Table 1.

【0029】[0029]

【表1】 [Table 1]

【0030】表1より明らかなように、本発明によれ
ば、少ない分離低減剤量により、材料分離抵抗性に優
れ、しかも、初期強度の高いコンクリート混練物を得る
ことができる。また、このように、締固め不要コンクリ
ートを得るために必要な分離低減剤量が極めて少なくて
済むことから、混練時の空気巻き込みも少なく、空気連
行による強度低下の問題もない。
As is clear from Table 1, according to the present invention, it is possible to obtain a concrete kneaded product having a high resistance to material separation and a high initial strength with a small amount of the separation reducing agent. Further, since the amount of the separation reducing agent required for obtaining the compaction-free concrete is extremely small in this way, air entrainment during kneading is small and there is no problem of strength reduction due to air entrainment.

【0031】[0031]

【発明の効果】以上詳述した通り、本発明の低分離性セ
メントの製造方法及び低分離性コンクリートの製造方法
によれば、少ない分離低減剤使用量にて十分な分離低減
効果を発揮する締固め不要コンクリートを得ることがで
きる。
As described in detail above, according to the method for producing a low-separation cement and the method for producing a low-separation concrete of the present invention, a cement which exhibits a sufficient separation reduction effect with a small amount of the separation reducing agent is used. It is possible to obtain concrete that does not require hardening.

【0032】このため、 分離低減剤使用量が低減される。 分離低減剤使用量が少ないことから、混練時の空気
巻き込みも少なく、消泡剤が不要となる。また、空気連
行による強度低下の問題もない。 多種類の混和材や添加剤を添加する必要がなく、配
合、コンクリート混練作業が軽減され、製造コストが安
価となる。 締固め不要により、施工不良、成形時の振動、騒音
公害や人手不足が解消される。 等の効果が奏され、容易かつ効率的に、しかも安価に、
高強度、高特性コンクリートを得ることが可能とされ
る。
Therefore, the amount of the separation reducing agent used is reduced. Since the amount of the separation reducing agent used is small, air entrainment during kneading is small and an antifoaming agent is not required. Further, there is no problem of strength reduction due to air entrainment. It is not necessary to add various kinds of admixtures and additives, the work of compounding and concrete kneading is reduced, and the manufacturing cost is reduced. Since compaction is not required, poor construction, vibration during molding, noise pollution and manpower shortage are eliminated. The effects such as the above are achieved, and it is easy and efficient, and at low cost,
It is possible to obtain high-strength, high-performance concrete.

───────────────────────────────────────────────────── 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 24:38 Z 2102−4G 24:26 D 2102−4G 24:22 C 2102−4G 24:30) D 2102−4G ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C04B 24:38 Z 2102-4G 24:26 D 2102-4G 24:22 C 2102-4G 24:30 ) D 2102-4G

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 セメントクリンカーを粉砕してセメント
を製造する方法において、粉砕されるセメントクリンカ
ーに分離低減剤を添加し、セメントクリンカーの粉砕時
に分離低減剤の混合を併せて行なうようにしたことを特
徴とする低分離性セメントの製造方法。
1. A method for producing cement by crushing cement clinker, wherein a separation reducing agent is added to the cement clinker to be crushed, and the separation reducing agent is mixed when crushing the cement clinker. A method for producing a low-separation cement, which is characterized.
【請求項2】 セメント、骨材、減水剤及び水を混練し
てコンクリートを製造する方法において、 該セメントとして、請求項1の方法により得られる低分
離性セメントを用いることを特徴とする低分離性コンク
リートの製造方法。
2. A method for producing concrete by kneading cement, aggregate, water-reducing agent and water, wherein the low-separation cement obtained by the method of claim 1 is used as the cement. Method for the production of water-resistant concrete.
JP22023692A 1992-08-19 1992-08-19 Production of cement having low separability and production of concrete having low separability Withdrawn JPH0664951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22023692A JPH0664951A (en) 1992-08-19 1992-08-19 Production of cement having low separability and production of concrete having low separability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22023692A JPH0664951A (en) 1992-08-19 1992-08-19 Production of cement having low separability and production of concrete having low separability

Publications (1)

Publication Number Publication Date
JPH0664951A true JPH0664951A (en) 1994-03-08

Family

ID=16748030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22023692A Withdrawn JPH0664951A (en) 1992-08-19 1992-08-19 Production of cement having low separability and production of concrete having low separability

Country Status (1)

Country Link
JP (1) JPH0664951A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07157347A (en) * 1993-12-01 1995-06-20 Sumitomo Osaka Cement Co Ltd Cement composition, production and hardened body thereof
JP2006111464A (en) * 2004-10-12 2006-04-27 Tokuyama Corp Cement composition and method for producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07157347A (en) * 1993-12-01 1995-06-20 Sumitomo Osaka Cement Co Ltd Cement composition, production and hardened body thereof
JP2006111464A (en) * 2004-10-12 2006-04-27 Tokuyama Corp Cement composition and method for producing the same

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