JPH0242782B2 - - Google Patents
Info
- Publication number
- JPH0242782B2 JPH0242782B2 JP61245418A JP24541886A JPH0242782B2 JP H0242782 B2 JPH0242782 B2 JP H0242782B2 JP 61245418 A JP61245418 A JP 61245418A JP 24541886 A JP24541886 A JP 24541886A JP H0242782 B2 JPH0242782 B2 JP H0242782B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- plastering
- content
- fine
- less
- 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 - Lifetime
Links
- 239000004568 cement Substances 0.000 claims description 65
- 239000000843 powder Substances 0.000 claims description 38
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 24
- 239000004927 clay Substances 0.000 claims description 17
- 235000019738 Limestone Nutrition 0.000 claims description 12
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 12
- 239000006028 limestone Substances 0.000 claims description 12
- 239000002562 thickening agent Substances 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011400 blast furnace cement Substances 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006253 efflorescence Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011432 ordinary Portland cement mortar Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 206010037844 rash Diseases 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000004566 building material Substances 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
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011041 water permeability test Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
＜産業上の利用分野＞
本発明は、左官作業におけるセメント系混練物
のコテ塗り作業性および左官用セメントとしての
各種性能を、顕著に改善した左官用セメントに関
するものである。
＜従来の技術＞
左官作業におけるセメント系混練物のコテ塗り
作業性および左官用セメントとしての各種性能を
改善するための左官用セメントに関する研究は、
数多くなされている。即ち、例えば、普通ポルト
ランドセメントをベースとして、これに石灰石微
粉末、粘土微粉末、消石灰微粉末等の混和材を添
加混合して、セメント系混練物のコテ塗り作業性
および左官用セメントとしての各種性能を改善す
る試み、あるいは、このような左官用セメント
に、増粘剤、AE剤等の混和剤を添加混合して、
コテ塗り作業性および左官用セメントとしての各
種性能を改善する試みがなされている。
しかし、現状では、経済的で満足すべき性能を
有している左官用セメントが、市販されていない
ために、左官職人は、やむを得ず普通ポルトラン
ドセメントを使用してモルタル等のセメント系混
練物を混練する際に、必要に応じて、増粘剤、保
水剤等を添加して、左官作業におけるコテ塗り作
業性および左官用セメントとしての各種性能の改
善を行なつているのが現状で、この方法では、必
ずしも満足すべき性能を有したセメント系混練物
は、得られていないのが現状である。
＜発明が解決しようとする問題点＞
左官作業におけるセメント系混練物のコテ塗り
作業性および左官用セメントとしての各種性能を
改善するための左官用セメントに関する研究が、
数多くなされているにもかかわらずず、現在まで
に、必ずしも経済的で満足すべき性能を有してい
る左官用セメントは、市販されていない。
その理由の一つは、左官作業におけるセメント
系混練物のコテ塗り作業性および左官用セメント
としての各種性能を改善する有効な混和材を、安
価に生産する技術が確立されていないためであ
り、いくら高性能な左官用セメントであつても、
経済性を無視した高価なセメントであつては、建
築材料としては使用できない。
このような現状から、経済的で満足すべき性能
を有している左官用セメントの開発が、強く望ま
れていた。
＜問題点を解決するための手段＞
本発明者等は、左官作業におけるセメント系混
練物のコテ塗り作業性および左官用セメントとし
ての各種性能を改善する有効な混和材を広く検討
した結果、安価に、かつ、大量に入手する手段と
して、サスペンジヨンプレヒーター付きセメント
クリンカー焼成炉の排ガスを補集して得た微粉末
に着目して、鋭意研究した結果、サスペンジヨン
プレヒーター付セメントクリンカー焼成炉の排ガ
スを補集して得た微粉末の内、ブレーン粉末度が
8000cm2／ｇ以上、粘土微粉末含有率が20〜40％、
酸化アルカリ（R2O）含有率が１％以下、三酸
化硫黄（SO3）含有率が３％以下、遊離石灰
（CaO）含有率が１％以下である各条件を満足す
る粘土微粉末を含む石灰石微粉末が、左官作業に
おけるセメント系混練物のコテ塗り作業性および
左官用セメントとしての各種性能を改善する有効
な混和材であり、安価に、かつ、大量に入手でき
る混和材として最適であることを見い出した。
サスペンジヨンプレヒーター付きセメントクリ
ンカー焼成炉の排ガスを補集して得た微粉末の
内、前記の各条件を満足する粘土微粉末を含む石
灰石微粉末は、補集機のホツパーの選択により可
能である。
＜作用＞
本発明による左官用セメントは、ポルトランド
セメント、高炉セメント、シリカセメントあるい
はフライアツシユセメントをベースとして、これ
の100重量部に、サスペンジヨンプレヒーター付
きセメントクリンカー焼成炉の排ガスを補集して
得た微粉末の内で、ブレーン粉末度が8000cm2／ｇ
以上、粘土微粉末含有率が20〜40％、酸化アルカ
リ（R2O）の含有率が１％以下、三酸化硫黄
（SO3）の含有率が３％以下、遊離石灰（CaO）
の含有率が１％以下である各条件を満足する粘土
微粉末を含むむ石灰石微粉末を10〜100重量部、
および、増粘剤、保水剤、AE剤、減水剤等の内
の１種類以上をそれぞれ0.01〜１重量部添加混合
することを特徴とする左官用セメントである。
前記の粘土微粉末を含む石灰石微粉末の添加混
合割合を10重量部以下にすると、左官作業におけ
るセメント系混練物のコテ塗り作業性を改善する
効果が少なく、100重量部以上にすると、左官用
セメントの強度が低下する。
また、前記の粘土微粉末を含む石灰石微粉末の
粉末度は、8000cm2／ｇ以下であると、左官作業に
おけるセメント系混練物のコテ塗り作業性を改善
する効果が少なくなる。
また、前記の粘土微粉末を含む石灰石微粉末の
粘土微粉末含有率は、20〜40％が好ましく、20％
以下になると、左官作業におけるセメント系混練
物の保水性の改善効果が少なくなり、40％を越え
ると、コテ離れが悪くなると共に、左官仕上げを
行なつた壁面に、乾燥収縮による亀裂発生の危険
が大きくなる。
次に、酸化アルカリ（R2O）含有率が１％以
下の粘土微粉末を含む石灰石微粉末を選択する理
由は、左官仕上げを行なつた壁面に、アルカリ骨
材反応による異常膨張から起こる亀裂発生を防止
するためであり、三酸化硫黄（SO3）含有率が３
％以下、遊離石灰（CaO）含有率が１％以下の粘
土微粉末を含む石灰石微粉末を選択する理由は、
左官仕上げを行なつた壁面の異常膨張による亀裂
発生を防止するためである。
なお、左官仕上げを行なつた壁面に、エフロレ
ツセンスを発生させないためには、エフロレツセ
ンスの原因となる酸化アルカリ（R2O）、三酸化
硫黄（SO3）、遊離石灰（CaO）等の含有率を、
極力低く押えることが肝要である。
また、増粘剤等の添加量が0.01重量部以下にな
ると、左官作業におけるセメント系混練物のコテ
塗り作業性を改善する効果が少なく、１重量部以
上になると、硬化不良等の問題が生ずる。
＜実施例＞
各実施例において、比較対照用のセメントおよ
び本発明による左官用セメントのベースセメント
として普通ポルトランドセメント（以下単にセメ
ントと言う）を使用して実施した。
また、各実施例に使用した本発明による左官用
セメント用の混和材は、サスペンジヨンプレヒー
ター付セメントクリンカー焼成炉の排ガスを補集
して得た微粉末の内、ブレーン粉末度が8000cm2／
ｇ以上、粘土微粉末の含有率が20〜40％、酸化ア
ルカリ（R2O）の含有率が１％以下、三酸化硫
黄（SO3）の含有率が３％以下、遊離石灰
（CaO）の含有率が１％以下である各条件を満足
する粘土微粉末を含む石灰石微粉末（以下単に微
粉末と言う）を使用した。
実施例 １
本発明によ左官用セメントおよび対照用セメン
トの強度を、JIS Ｒ 5201によつて試験した。比
較試験結果を表−１に示す。
<Industrial Application Field> The present invention relates to a plastering cement that has significantly improved workability of troweling a cement-based mixture in plastering work and various performances as a plastering cement. <Prior art> Research on plastering cement has been conducted to improve the workability of troweling cement-based mixtures in plastering work and various performances as plastering cement.
Many have been done. That is, for example, using ordinary Portland cement as a base, admixtures such as fine limestone powder, fine clay powder, and fine slaked lime powder are added and mixed to improve the workability of troweling the cement-based mixture and various types of plastering cement. In an attempt to improve the performance, or by adding and mixing admixtures such as thickeners and AE agents to such plastering cement,
Attempts have been made to improve the workability of troweling and various performances as plastering cement. However, as there is currently no commercially available plastering cement that is economical and has satisfactory performance, plasterers have no choice but to use ordinary Portland cement to mix cement-based mixtures such as mortar. At present, thickeners, water retention agents, etc. are added as necessary to improve the workability of troweling during plastering work and various performances as plastering cement. However, at present, a cement-based kneaded material with necessarily satisfactory performance has not been obtained. <Problems to be Solved by the Invention> Research on plastering cement has been conducted to improve the workability of troweling cement-based mixtures in plastering work and various performances as plastering cement.
Although many efforts have been made, to date, no plastering cement that is necessarily economical and has satisfactory performance has been commercially available. One of the reasons for this is that no technology has been established to inexpensively produce an effective admixture that improves the troweling workability of cement-based mixtures in plastering work and various performances as plastering cement. No matter how high-performance plastering cement is,
Expensive cement that ignores economic efficiency cannot be used as a building material. Under these circumstances, there has been a strong desire to develop plastering cement that is economical and has satisfactory performance. <Means for Solving the Problems> As a result of extensive research into effective admixtures that improve the troweling workability of cement-based mixtures in plastering work and various performances as plastering cement, the present inventors found that As a means to obtain this in large quantities, we focused on fine powder obtained by collecting exhaust gas from cement clinker kilns with a suspension preheater, and as a result of intensive research, we developed a cement clinker kiln with a suspension preheater. Of the fine powder obtained by collecting exhaust gas, Blaine fineness is
8000cm 2 /g or more, clay fine powder content 20-40%,
Limestone powder containing fine clay powder that satisfies the following conditions: alkali oxide (R2O) content is 1% or less, sulfur trioxide (SO3) content is 3% or less, and free lime (CaO) content is 1% or less. The powder is an effective admixture that improves the troweling workability of cement-based mixtures in plastering work and various performances as plastering cement, and it is ideal as an admixture that can be obtained at low cost and in large quantities. I found it. Among the fine powder obtained by collecting exhaust gas from a cement clinker kiln with a suspension preheater, fine limestone powder containing fine clay powder that satisfies each of the above conditions can be obtained by selecting the hopper of the collector. be. <Function> The plastering cement according to the present invention is based on Portland cement, blast furnace cement, silica cement, or fly ash cement, and 100 parts by weight of this is mixed with exhaust gas from a cement clinker kiln equipped with a suspension preheater. Among the fine powders obtained, Blaine fineness is 8000cm 2 /g.
Above, clay fine powder content is 20-40%, alkali oxide (R2O) content is 1% or less, sulfur trioxide (SO3) content is 3% or less, free lime (CaO)
10 to 100 parts by weight of fine limestone powder containing fine clay powder that satisfies each condition that the content of
A cement for plastering is characterized in that 0.01 to 1 part by weight of one or more of a thickener, a water retention agent, an AE agent, a water reducer, etc. are added and mixed. If the mixing ratio of the fine limestone powder containing the above-mentioned clay fine powder is less than 10 parts by weight, it will have little effect on improving the workability of troweling cement-based mixtures in plastering work, and if it is more than 100 parts by weight, it will not be effective for plastering. The strength of cement decreases. Further, if the fineness of the limestone fine powder containing the above-mentioned clay fine powder is less than 8000 cm 2 /g, the effect of improving the workability of troweling the cement-based kneaded material in plastering work will be reduced. Further, the clay fine powder content of the limestone fine powder containing the clay fine powder is preferably 20 to 40%, and 20%
If it is less than 40%, the effect of improving the water retention property of the cement-based mixture during plastering work will be reduced, and if it exceeds 40%, it will be difficult to separate the trowel, and there is a risk of cracking on the plastered wall due to drying shrinkage. becomes larger. Next, the reason for selecting fine limestone powder containing fine clay powder with an alkali oxide (R2O) content of 1% or less is to prevent cracks from forming on plastered walls due to abnormal expansion due to alkali aggregate reaction. This is to prevent the sulfur trioxide (SO3) content from
The reason for selecting fine limestone powder containing clay fine powder with a free lime (CaO) content of less than 1% is as follows.
This is to prevent cracks from occurring due to abnormal expansion of the plastered wall surface. In order to prevent efflorescence from occurring on plastered walls, it is necessary to reduce the content of alkali oxide (R2O), sulfur trioxide (SO3), free lime (CaO), etc., which cause efflorescence. of,
It is important to keep it as low as possible. Furthermore, if the amount of the thickener added is less than 0.01 part by weight, it will have little effect in improving the workability of troweling the cement-based mixture during plastering work, and if it is more than 1 part by weight, problems such as poor curing will occur. . <Example> In each example, ordinary Portland cement (hereinafter simply referred to as cement) was used as a comparative cement and as a base cement for plastering cement according to the present invention. In addition, the admixture for plastering cement according to the present invention used in each example was a fine powder obtained by collecting exhaust gas from a cement clinker kiln with a suspension preheater, and had a Blaine fineness of 8000 cm 2 /
g or more, fine clay powder content 20-40%, alkali oxide (R2O) content 1% or less, sulfur trioxide (SO3) content 3% or less, free lime (CaO) content Limestone fine powder (hereinafter simply referred to as fine powder) containing fine clay powder that satisfies each condition of 1% or less was used. Example 1 The strength of a plastering cement according to the invention and a control cement was tested according to JIS R 5201. The comparative test results are shown in Table-1.
【表】
実施結果によると、左官用セメントのJIS強度
面から見た適切な粘土微粉末を含む石灰石微粉末
の配合量は、普通ポルトランドセメント100重量
部に対して、10〜100重量部であることが分る。
実施例 ２
本発明による左官用セメントおよび対照用セメ
ントを使用したモルタルのコテ塗り作業性等の評
価を、左官職人が比較試験した。
ラス下地に、６〜８mm厚みに金コテで塗布し
た。気温は、20〜22℃、湿度は、55〜65％であつ
た。各モルタルの調合割合を表−２に示す。[Table] According to the results, the appropriate blending amount of fine limestone powder including fine clay powder from the JIS strength perspective of cement for plastering is 10 to 100 parts by weight per 100 parts by weight of ordinary Portland cement. I understand. Example 2 Plasterers conducted a comparative test to evaluate the troweling workability of mortar using the plastering cement according to the present invention and the control cement. It was applied to the lath base to a thickness of 6 to 8 mm using a metal trowel. The temperature was 20-22°C and the humidity was 55-65%. Table 2 shows the mixing ratio of each mortar.
【表】
た。
各モルタルについて、左官職人が５点法で評価
した結果を表−３に示す。[Table]
Table 3 shows the results of each mortar evaluated by plasterers using a 5-point scale.
【表】【table】
【表】
実施結果によると、本発明による左官セメント
を使用したモルタルは、メチルセルロース等の増
粘剤を使用しなくとも、比較的照用の普通ポルト
ランドセメントモルタルに比較して、全ての点で
優れており、特に、コテ離れ、コテ伸びについて
は、格段に優れているとの評価を受けた。なお、
メチルセルロース等の増粘剤を使用すると、作業
性等は更に向上した。また、各モルタルとも亀裂
発生は、認められなかつた。
実施例 ３
本発明による左官用セメントおよび対照用セメ
ントを使用したモルタルの透水性、保水性、接着
性を比較試験した。
透水性試験は、JIS Ａ 1404に準じ、透水圧
は、１Kgｆ／cm2で試験した、保水性試験は、JIS
Ａ 6904に準じ、吸引時間10分間で試験した。接
着性試験は、コンクリート下地に各モルタルを塗
布し、材令21日で建研式引張試験機を使用して試
験した。各モルタルの調合割合を表−４に示し、
試験結果を表−５に示す。[Table] According to the results, the mortar using the plastering cement of the present invention is superior in all respects to the ordinary Portland cement mortar, which is comparatively used even without the use of thickeners such as methyl cellulose. In particular, it was evaluated as being extremely superior in terms of iron separation and iron extension. In addition,
Use of a thickener such as methylcellulose further improved workability. Furthermore, no cracks were observed in any of the mortars. Example 3 The water permeability, water retention, and adhesion of mortar using plastering cement according to the invention and a control cement were comparatively tested. The water permeability test was conducted in accordance with JIS A 1404, and the water permeation pressure was tested at 1Kgf/ cm2.The water retention test was conducted in accordance with JIS A 1404.
The test was conducted according to A 6904 with a suction time of 10 minutes. In the adhesion test, each mortar was applied to a concrete base and tested using a Kenken type tensile tester at 21 days old. Table 4 shows the mixing ratio of each mortar.
The test results are shown in Table-5.
【表】
た。
[Table]
【表】
実施結果によると、本発明による左官セメント
を使用したモルタルは、メチルセルロース等の増
粘剤を使用しなくとも、比較対照用の普通ポルト
ランドセメントモルタルに比較して、全ての性能
で優れていることが判明した。なお、メチルセル
ロース等の増粘剤を使用すると、透水性等は更に
向上した。
＜発明の効果＞
本発明により、左官作業におけるセメント系混
練物のコテ塗り作業性および左官用セメントとし
ての各種性能を改善する有効な混和材を、安価
に、かつ、大量に生産する手段を確立したことに
より、高性能な左官用セメントを経済的に生産す
る技術を確立した。[Table] According to the results, the mortar using the plastering cement according to the present invention is superior in all performances compared to the ordinary Portland cement mortar for comparison, even without the use of thickeners such as methyl cellulose. It turned out that there was. In addition, when a thickener such as methyl cellulose was used, water permeability etc. were further improved. <Effects of the Invention> The present invention establishes a means to inexpensively and in large quantities produce an effective admixture that improves the workability of troweling a cement-based mixture in plastering work and various performances as plastering cement. As a result, we established a technology to economically produce high-performance plastering cement.
Claims (1)
ヒータ付きセメントクリンカー焼成炉の排ガスを
補集して得た微粉末の内、ブレーン粉末度が8000
cm2／ｇ以上、粘土微粉末の含有率が20〜40％、酸
化アルカリ（R2O）の含有率が１％以下、三酸
化硫黄（SO3）の含有率が３％以下、遊離石灰
（CaO）の含有率が１％以下である各条件を満足
する粘土微粉末を含む石灰石微粉末10〜100重量
部、および増粘剤、保水剤、AE剤、減水剤等の
内の１種類以上をそれぞれ0.01〜１重量部添加混
合することを特徴とする左官用セメント。 ２ 前項のセメントは、ポルトランドセメント、
高炉セメント、シリカセメントおよびフライアツ
シユセメントであることを特徴とする特許請求の
範囲第１項記載の左官用セメント。[Scope of Claims] 1. 100 parts by weight of cement and a fine powder obtained by collecting exhaust gas from a cement clinker kiln with a suspension preheater, which has a Blaine fineness of 8000.
cm 2 /g or more, fine clay powder content 20-40%, alkali oxide (R2O) content 1% or less, sulfur trioxide (SO3) content 3% or less, free lime (CaO) 10 to 100 parts by weight of fine limestone powder, including fine clay powder that satisfies each condition with a content of 1% or less, and one or more of thickeners, water retention agents, AE agents, water reducing agents, etc. A cement for plastering characterized by adding and mixing 0.01 to 1 part by weight. 2 The cement mentioned in the preceding paragraph is Portland cement,
The plastering cement according to claim 1, which is a blast furnace cement, a silica cement, and a fly ash cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24541886A JPS63103848A (en) | 1986-10-17 | 1986-10-17 | Plaster cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24541886A JPS63103848A (en) | 1986-10-17 | 1986-10-17 | Plaster cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63103848A JPS63103848A (en) | 1988-05-09 |
| JPH0242782B2 true JPH0242782B2 (en) | 1990-09-26 |
Family
ID=17133358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24541886A Granted JPS63103848A (en) | 1986-10-17 | 1986-10-17 | Plaster cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63103848A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6068696A (en) * | 1998-07-20 | 2000-05-30 | Hercules Incorporated | Flexural bond strength/low air/workability additive for mortar cement |
| JP2006096631A (en) * | 2004-09-30 | 2006-04-13 | Sekisui Plastics Co Ltd | Mortar mixing agent for troweling and mortar composition therewith |
| JP4810914B2 (en) * | 2005-07-27 | 2011-11-09 | 宇部興産株式会社 | Fine powder for concrete composition, fresh concrete and method for improving fluidity thereof |
| WO2024142512A1 (en) * | 2022-12-28 | 2024-07-04 | デンカ株式会社 | Cement admixture and cement composition containing said cement admixture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121015A (en) * | 1974-08-12 | 1976-02-19 | Yamaha Motor Co Ltd | Nainenkikanno haikisainenshosochi |
| JPS6197154A (en) * | 1984-10-15 | 1986-05-15 | 第一セメント株式会社 | Low exothermic mixed cement composition |
-
1986
- 1986-10-17 JP JP24541886A patent/JPS63103848A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121015A (en) * | 1974-08-12 | 1976-02-19 | Yamaha Motor Co Ltd | Nainenkikanno haikisainenshosochi |
| JPS6197154A (en) * | 1984-10-15 | 1986-05-15 | 第一セメント株式会社 | Low exothermic mixed cement composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63103848A (en) | 1988-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20030011285A (en) | Non-efflorescing cementitious bodies | |
| JP2020055696A (en) | Geopolymer composition and mortar and concrete using the same | |
| EP0819660B1 (en) | Quick-setting cement containing clinker based on calcium fluoro-aluminate mixed with lime | |
| JPH066499B2 (en) | Quick setting agent for cement | |
| KR20230036643A (en) | Flowable concrete composition with excellent workability and resistance to material separation | |
| JPH0242782B2 (en) | ||
| JPH06100338A (en) | Highly fluid cement | |
| JPH01298050A (en) | Flash setting agent for cement | |
| JP2002068804A (en) | Concrete composition | |
| JP2024501295A (en) | Three-component hydraulic binder composition | |
| JP2000160057A (en) | Material for building and civil engineering work | |
| JPH0986989A (en) | Crystalline highly hydrated and activated material hardening accelerating material for cement and acceleration of setting and hardening of mortar or concrete | |
| JP4459379B2 (en) | Cement admixture and cement composition | |
| JP3818805B2 (en) | Cement admixture and cement composition | |
| JP4459380B2 (en) | Cement admixture and cement composition | |
| JP4335424B2 (en) | Cement admixture and cement composition | |
| JPH059051A (en) | Epoxy resin polymer cement composition, hardening epoxy resin polymer cement mortar composition and method thereof | |
| KR100191354B1 (en) | Cement mortar composition | |
| KR102589585B1 (en) | Concrete composition with excellent workability and resistance to material separation | |
| WO2005003060A1 (en) | Chemical admixture for cementitious compositions | |
| JP3883343B2 (en) | Cement admixture and cement composition | |
| RU2148044C1 (en) | Composition for manufacturing cellular material | |
| JPH03159941A (en) | Mortar and its use | |
| JP2002053352A (en) | Concrete structure hardly causing crack | |
| JPH1143360A (en) | Quick setting promoter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |