JPH0497934A - Cement composed essentially of slag - Google Patents
Cement composed essentially of slagInfo
- Publication number
- JPH0497934A JPH0497934A JP21541690A JP21541690A JPH0497934A JP H0497934 A JPH0497934 A JP H0497934A JP 21541690 A JP21541690 A JP 21541690A JP 21541690 A JP21541690 A JP 21541690A JP H0497934 A JPH0497934 A JP H0497934A
- Authority
- JP
- Japan
- Prior art keywords
- blast furnace
- cement
- zeolite
- pulverized powder
- drying shrinkage
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 23
- 239000002893 slag Substances 0.000 title abstract 4
- 239000000843 powder Substances 0.000 claims abstract description 24
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 21
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010457 zeolite Substances 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005469 granulation Methods 0.000 claims description 14
- 230000003179 granulation Effects 0.000 claims description 14
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 12
- 230000006866 deterioration Effects 0.000 abstract description 7
- 239000007864 aqueous solution Substances 0.000 abstract description 5
- 239000011400 blast furnace cement Substances 0.000 abstract description 5
- 239000011734 sodium Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000001879 gelation Methods 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003823 mortar mixing Methods 0.000 description 2
- 235000019795 sodium metasilicate Nutrition 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- -1 silicate ions Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は高炉セメントの改良に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in blast furnace cement.
［従来の技術］
高炉水砕の微粉末に硅酸アルカリ水ｉ＠液を添加したも
のは超早強性、高強度発現性セメントとして既に公知の
ものであるが、以下のような欠点かある。[Prior art] A cement made by adding aqueous alkali silicate to fine powder of blast furnace granulation is already known as an ultra-early strength, high-strength cement, but it has the following drawbacks: .
（ａ）乾燥収縮率が大きい。(a) High drying shrinkage rate.
（ｂ）曲げ強度が経時劣化する。特に乾燥雰囲気では顕
著。(b) Bending strength deteriorates over time. This is especially noticeable in dry atmospheres.
［発明が解決しようとする課［１
これらの欠点の為に、上記のように魅力ある特性を持ち
ながら、中々実用化されていない。[Problem to be solved by the invention] [1] Due to these drawbacks, although it has the above-mentioned attractive characteristics, it has not been put into practical use.
これらの欠点が上記特性を喪失しないで是正できるなら
ば、短期間養生による高強度コンクリートが得られ、ひ
いては緊急コンクリート用のセメント等への利用等があ
り、新規なセメントとして位置付けられるであろう。本
発明者はこれらの欠点を是正する技術を提供するもので
ある。If these drawbacks can be corrected without losing the above properties, high-strength concrete can be obtained by curing for a short period of time, and it may be used as cement for emergency concrete, etc., and it will be positioned as a new cement. The present inventor provides a technique to correct these drawbacks.
［課題を解決するための手段コ
本発明は、高炉水砕の微粉末と硅酸アルカリとゼオライ
トからなるセメント、アルカリ高炉水砕の微粉末と硅酸
アルカリ、及び乾燥収縮低減剤を含浸させたゼオライト
からなるセメント、及び高炉水砕の微粉末と硅酸アルカ
リとゼオライドとメタカオリンからなるセメント、を含
む。[Means for Solving the Problems] The present invention provides cement made of fine powder of blast furnace granulation, alkali silicate, and zeolite, impregnated with fine powder of alkaline blast furnace granulation, alkali silicate, and a drying shrinkage reducing agent. Contains cement made of zeolite, and cement made of fine powder of blast furnace granulation, alkali silicate, zeolide, and metakaolin.
［作 用］
高炉水砕の微粉末と硅酸アルカリからなるセメントにゼ
オライトを一部代替使用することにより、上記欠点のう
ち（ｂｌ が解決されることを見出した。[Function] It has been found that (bl) among the above-mentioned drawbacks can be solved by partially substituting zeolite for cement made of fine powder of blast furnace granulation and alkali silicate.
又、高炉水砕の微粉末と硅酸アルカリからなるセメント
にメタカオリンを一部代替使用することにより、上記欠
点のうち（ａ）が解決されることを見出した。It has also been found that the above drawback (a) can be solved by partially substituting metakaolin for cement made of fine powder of blast furnace granulation and alkali silicate.
さらに、高炉水砕の微粉末と硅酸アルカリからなるセメ
ントにメタカオリン及びゼオライトを一部代替使用する
と上記欠点の双方が解決できることになり、待望の超早
強性、高強度発現性セメントが可能となる。Furthermore, if metakaolin and zeolite are partially substituted for cement made of fine powder of blast furnace granulated powder and alkali silicate, both of the above drawbacks can be solved, making it possible to create the long-awaited cement with ultra-early strength and high strength development. Become.
これらにより何故に上記欠点が解決できるのかを以下に
述べる。The reason why the above-mentioned drawbacks can be solved by these methods will be explained below.
高炉水砕の微粉末と硅酸アルカリからなるセメントの水
和反応は以下のようなものである。The hydration reaction of cement consisting of fine powder of blast furnace granulation and alkali silicate is as follows.
即ち、
Ｎａ、０−５ｉＯ，十高炉水砕の微粉末からのＣａＯｅ
３Ｃ−５−Ｈ＋ ＮａＯＨ・・・・（１）（１）式の通
りに水和反応が起これば問題はないが、高炉水砕の微粉
末からのＣａＯ量が少ない場合（往々にしてそのように
なるが）（１）式以外に以下のような水和反応が起こる
。That is, Na, 0-5iO, CaOe from fine powder of 10 blast furnace granules
3C-5-H+ NaOH... (1) There is no problem if the hydration reaction occurs according to equation (1), but if the amount of CaO from the fine powder of blast furnace granulation is small (often In addition to equation (1), the following hydration reactions occur.
Ｎａ、０−５ｉ０２＋高炉水砕の微粉末からの（６”
ｅ＝＞Ｓ−Ｈ＋Ｎａ０１（・・・・（２）
ここでＳ−Ｈはシリカゲルを意味している。Na, 0-5i02+ (6” from fine powder of blast furnace granulation
e=>SH+Na01 (...(2) Here, SH means silica gel.
即ち、（２）式の反応が起こるとシリカゲルが副生され
、それが乾燥収縮現象を引き起こすこととなる。従って
、乾燥収縮現象を抑制する為にはシリカゲルの副生を防
止する必要がある。That is, when the reaction of formula (2) occurs, silica gel is produced as a by-product, which causes a drying shrinkage phenomenon. Therefore, in order to suppress the drying shrinkage phenomenon, it is necessary to prevent the by-product of silica gel.
その手段としてメタカオリン（カオリナイトを８００〜
１０００℃で仮焼したもの）を一部代替すると、このメ
タカオリン中のＡ２２０３分がこのシリカゲルの副生を
防止する。即ちシリカゲルの代わりに＾１ｚｏｓ−５ｉ
Ｏｚゲルが副生され、この為に乾燥収縮現象を防止する
。As a means of achieving this, metakaolin (kaolinite) is
When the silica gel calcined at 1000°C is partially substituted, the A2203 content of this metakaolin prevents the by-product of this silica gel. That is, instead of silica gel, ^1zos-5i
Oz gel is produced as a by-product, which prevents the drying shrinkage phenomenon.
曲げ強度の経時劣化現象は以下のようなメカニズムで起
こっている。The phenomenon of deterioration of bending strength over time occurs through the following mechanism.
Ｎａ２Ｏ−３ｉＯ，水溶液はその硅酸イオンと比較して
、より陰性のイオンを含有するようになると直ちにゲル
化が起こり、その際に膨張現象を弓き起こす。この膨張
現象により曲げ強度の経時劣化現象が起こる。その際の
陰イオンとしては唾−、５０４’−、ＨＣＯ３−等があ
り、その反応式は以下のように表すことができる。When the Na2O-3iO aqueous solution begins to contain ions that are more negative than its silicate ions, gelation immediately occurs, causing an expansion phenomenon. This expansion phenomenon causes a phenomenon in which the bending strength deteriorates over time. Examples of anions in this case include spit-, 504'-, HCO3-, etc., and the reaction formula can be expressed as follows.
Ｎａｍｅ−ＳｉＯｔ ＋ ｘ−＋ Ｈ２ＯロＮａＸ ＋
Ｓ−Ｈ・・・・（３）このような反応が既に硬化した
コンクリート、或いはセメント中で起こると、その膨張
現象の為に組織中に微細クラックが発生し、曲げ強度の
経時劣化現象となると考えている。従って、硬化してし
まったコンクリート、或いはモルタル中で（３）式のよ
うな反応が起こるのを防止することが、コンクリートの
曲げ強度の経時劣化現象を防止するためには必要である
。その手段にゼオライトをその周辺に配置することが挙
げられる。Name-SiOt + x-+ H2OroNaX +
S-H... (3) When such a reaction occurs in concrete or cement that has already hardened, microcracks will occur in the structure due to the expansion phenomenon, resulting in deterioration of bending strength over time. thinking. Therefore, it is necessary to prevent the reaction expressed by equation (3) from occurring in hardened concrete or mortar in order to prevent the phenomenon of deterioration of the bending strength of concrete over time. One way to do this is to place zeolite around it.
ゼオライトは公知なように陽イオンを吸着する性能を有
している。このような陽イオン吸着性のある物質が共存
する場合には、（３）式は以下のように変化する。As is well known, zeolite has the ability to adsorb cations. When such a cation-adsorbing substance coexists, equation (3) changes as follows.
Ｎａ、０−５ｉＯ，＋Ｍ”＋Ｘ−＋Ｚｅｏ−Ｎａ ｃ
＝＞ Ｎａ２Ｏ−５ｉ０２＋ＮａＸ＊Ｚｅｏ−Ｍ ・
・・・（４）Ｈｅｏ−：ゼオライトを示す。Ｍ ；金属
、例えばＣａ）
即ち、ゼオライトが共存すると陰イオンによるＮａ２Ｏ
−５１０２のゲル化が阻止される。従って（３）式のよ
うなゲル化により惹起される曲げ強度の経時劣化現象は
ゼオライトをセメント中に添加することにより防止でき
る。Na, 0-5iO, +M"+X-+Zeo-Na c
=> Na2O-5i02+NaX*Zeo-M ・
...(4) Heo-: Indicates zeolite. M; Metal, e.g. Ca) That is, when zeolite coexists, Na2O due to anion
-5102 gelation is prevented. Therefore, the phenomenon of deterioration of bending strength over time caused by gelation as shown in equation (3) can be prevented by adding zeolite to cement.
［実 施 例］ 実施例１ （１）バインダー条件 （ａ）＝１００： ｏ ： 。[Example] Example 1 (1) Binder conditions (a) = 100: o o.
（ｂ）＝９５： ５ ： ０
（ｃ）＝９５： Ｏ： ５（ｄ）＝
９０： ５ ： ５メタカオリ
ンのブレーン指数３０００ｃｍ”７ｇゼオライトのブレ
ーン指数 ２０００ｃｍ２７ｇ（２）使用する硅酸アル
カリ水溶液
メタ硅酸ソーダ２００ｇ／Ｊ！
（３）モルタル配合条件
バインダー ： 標準砂 二 メタ硅酸ソーダ 水溶液
＝５２０ｇ： １０４０ｇ ： ２７０ｃｃ（４）
強度発現状況
第１表
第１表
（養生条件
２８日まで：
ビニール袋に密閉した状態
で養生
２８〜５６日まで一２０℃×６０％を層重で養生）
（５）考察
ゼオライト、メタ硅酸ソーダ添加で乾燥収縮現象、曲げ
強度の経時劣化現象が抑制された。(b)=95:5:0
(c)=95: O: 5(d)=
90: 5: 5 Blaine index of metakaolin 3000cm''7g Blaine index of zeolite 2000cm27g (2) Alkaline silicate aqueous solution used Sodium metasilicate 200g/J! (3) Mortar mixing conditions Binder: Standard sand 2 Sodium metasilicate aqueous solution =520g: 1040g: 270cc (4)
Strength development status Table 1 Table 1 (Curing conditions until 28th day: Cured in sealed plastic bag at -20℃ x 60% layer weight from 28th to 56th day) (5) Discussion Zeolite, metasilicic acid The addition of soda suppressed the phenomenon of drying shrinkage and deterioration of bending strength over time.
実施例２
（１）バインダー条件
高炉水砕の微粉末：乾燥収縮剤を含浸させたゼオライト
粉末
ａ −１００：Ｏ
ｂ −９５：５乾燥収縮低減剤含有率４１０９６Ｃ・９
５：５乾燥収縮低減剤含有率〜３０友ｄ −９５：５乾
燥収縮低減剤含有率〜５０９６ｅ）・９７：３乾燥収縮
低減剤含有率〜５０亀ｆ）−９９・２転燥収縮低減剤含
有率〜７Ｑ％ゼオライトのブレーン指数２ＱＱＯｃｍ”
７ｇ、吸油率〜９０％
乾燥収縮低減剤として日本セメント製のテトラガードを
使用した。Example 2 (1) Binder conditions Fine powder of blast furnace granulation: Zeolite powder impregnated with drying shrinkage agent a -100:O b -95:5 Drying shrinkage reducing agent content 41096C.9
5:5 Drying shrinkage reducing agent content ~ 30 friend d -95: 5 Drying shrinkage reducing agent content ~ 5096e) 97:3 Drying shrinkage reducing agent content ~ 50 kamef) -99.2 Drying shrinkage reducing agent Blaine index of content ~7Q% zeolite 2QQOcm”
7 g, oil absorption rate ~90% Tetraguard manufactured by Nippon Cement was used as a drying shrinkage reducing agent.
（２）使用する硅酸アルカリ木ｒ８液、モルタル配合条
件、養生条件等実施例１と同じ条件（４）強度発現状況
と硅酸アルカリからなるセメントにメタカオリン及びあ
るいはぜオライドを一部代替使用するので、上記セメン
トが保有している超早強性、高強度発現性を単独あるい
は合わせて特性が発現され、高炉セメントの特性向上と
なり、その経済的効果は大ミい。(2) Same conditions as Example 1, such as alkaline silicate wood R8 liquid, mortar mixing conditions, curing conditions, etc. (4) Strength development status and use of metakaolin and/or zeolide as a partial substitute for cement made of alkali silicate Therefore, the ultra-early strength and high-strength development properties possessed by the above-mentioned cement can be expressed either alone or in combination, resulting in improved properties of blast furnace cement, and the economic effects thereof are great.
（５）考察
乾燥収縮低減剤テトラガートは液状であるが、これを吸
油率＃９０％のゼオライトに含浸させると、固体状のも
のとなり、これをモルタル原料として添加した場合には
ゼオライトの曲げ強度の経時劣化減少防止機能、及び乾
燥収縮低減剤の乾燥収縮現象抑制機能の双方が発揮され
、優れたセメントとなる。(5) Discussion The drying shrinkage reducing agent Tetragart is liquid, but when it is impregnated into zeolite with an oil absorption rate of #90%, it becomes solid, and when it is added as a mortar raw material, the bending strength of the zeolite increases. It exhibits both the function of preventing deterioration over time and the function of suppressing the drying shrinkage phenomenon of the drying shrinkage reducing agent, resulting in an excellent cement.
［発明の効果］ 以上のように、本発明は、高炉水砕の微粉末他４名[Effect of the invention] As described above, the present invention is based on the fine powder of blast furnace granulation and four other materials.
Claims (1)
なるセメント。 ２ アルカリ高炉水砕の微粉末と硅酸アルカリ及び乾燥
収縮低減剤を含浸させたゼオライトからなるセメント。 ３ 高炉水砕の微粉末と硅酸アルカリとゼオライトとメ
タカオリンからなるセメント。[Claims] 1. A cement consisting of fine powder of blast furnace granulation, alkali silicate, and zeolite. 2. A cement made of zeolite impregnated with fine powder of alkaline blast furnace granulation, alkali silicate, and a drying shrinkage reducing agent. 3. A cement consisting of fine powder of blast furnace granulation, alkali silicate, zeolite, and metakaolin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21541690A JPH0497934A (en) | 1990-08-15 | 1990-08-15 | Cement composed essentially of slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21541690A JPH0497934A (en) | 1990-08-15 | 1990-08-15 | Cement composed essentially of slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0497934A true JPH0497934A (en) | 1992-03-30 |
Family
ID=16671974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21541690A Pending JPH0497934A (en) | 1990-08-15 | 1990-08-15 | Cement composed essentially of slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0497934A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0895971A1 (en) * | 1997-08-08 | 1999-02-10 | "HOLDERBANK" Financière Glarus AG | Alkaline sulfoaluminosilicate hydraulic cement and process for its manufacture |
| JP2011184236A (en) * | 2010-03-08 | 2011-09-22 | Adeka Corp | Powder shrinkage reducing agent for cement and cement composition containing the shrinkage reducing agent |
| JP2011527277A (en) * | 2008-05-30 | 2011-10-27 | コンストラクション リサーチ アンド テクノロジー ゲーエムベーハー | Mixtures containing slag sand, especially building material mixtures |
-
1990
- 1990-08-15 JP JP21541690A patent/JPH0497934A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0895971A1 (en) * | 1997-08-08 | 1999-02-10 | "HOLDERBANK" Financière Glarus AG | Alkaline sulfoaluminosilicate hydraulic cement and process for its manufacture |
| WO1999007650A1 (en) * | 1997-08-08 | 1999-02-18 | 'holderbank' Financiere Glarus Ag | Alkaline sulfoaluminosilicate hydraulic cement and process for its manufacture |
| JP2011527277A (en) * | 2008-05-30 | 2011-10-27 | コンストラクション リサーチ アンド テクノロジー ゲーエムベーハー | Mixtures containing slag sand, especially building material mixtures |
| JP2011184236A (en) * | 2010-03-08 | 2011-09-22 | Adeka Corp | Powder shrinkage reducing agent for cement and cement composition containing the shrinkage reducing agent |
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