JPS5899147A - Hydraulic cement composition comprising blast furnace water-granulated slag and gypsum dihydrate principally - Google Patents
Hydraulic cement composition comprising blast furnace water-granulated slag and gypsum dihydrate principallyInfo
- Publication number
- JPS5899147A JPS5899147A JP19901081A JP19901081A JPS5899147A JP S5899147 A JPS5899147 A JP S5899147A JP 19901081 A JP19901081 A JP 19901081A JP 19901081 A JP19901081 A JP 19901081A JP S5899147 A JPS5899147 A JP S5899147A
- Authority
- JP
- Japan
- Prior art keywords
- blast furnace
- gypsum
- sulfate
- cement composition
- hydraulic cement
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は高炉水砕スラグと、三水石膏との微粉末原料′
混合物に粉末硬化促進剤を添加、混合して成る水硬性セ
メント組成物に関する。Detailed Description of the Invention The present invention provides a fine powder raw material of granulated blast furnace slag and trihydrate gypsum.
The present invention relates to a hydraulic cement composition obtained by adding and mixing a powder hardening accelerator to a mixture.
本発明の水硬性セメント組成物の１原料でちる禽炉水砕
スラグは製鉄用溶鉱炉の副産物としてのスラグ、すなわ
ち鉱さいｔ水で急冷して砂状ない焼戻ガス中の亜硫酸ガ
スを除去する排煙脱硫工程で得られるいわゆる排脱石膏
である。The granulated furnace slag, which is one of the raw materials for the hydraulic cement composition of the present invention, is slag as a by-product of blast furnaces for iron-making. This is the so-called removed gypsum obtained in the smoke desulfurization process.
一般に土木工事における掘削作業ではこれに伴う排泥水
の同化処理、ま几は鉱山精練工場から排出される有害廃
棄物の安全処理にはこれを固化して無害化する処理′ｃ
あり、その几めには従来、ボルトランドセメントまたは
高炉セメントな戸の水硬る生石灰などが使用されている
。In general, excavation work in civil engineering works involves assimilation of waste water, and safe treatment of hazardous waste discharged from mines and smelting plants involves solidifying it and making it harmless.
Conventionally, water-hardened quicklime, such as boltland cement or blast furnace cement, has been used for its preparation.
しかしこれらの材料はすべて高温焼成物でその生産には
高エネルギー金必碩とする。例えば、ポルトランドセメ
ントでは焼成に８００．０００ ＫｃａＶクリンカーｔ
ｏｎ ｅ動力原単位１２０ Ｋ−Ｗ、 Ｈ，にメント
ｔｏｎ ｆ要するなど高エネルギー消費型の材料全使用
せねばならないという欠点があつ几。However, all of these materials are fired at high temperatures, and their production requires high-energy metal. For example, Portland cement requires 800.000 KcaV clinker t for firing.
One disadvantage is that it requires the use of high energy consumption materials, such as the power consumption of 120 KW, H, and tonf.
ま几ポルトランドセメント、高炉セメントは、−周知の
ように水和性が敏感に過ぎて却てその使用を不便にテる
ような嫌らいかあった。またポルトランドセメントにつ
いては耐鍼性が弱く、これを用い次コンクリート構造物
では膨張亀裂上記すなどの欠点があり、フミン酸など金
含有する腐蝕上、され、強度の発現が阻害されていた。As is well known, Portland cement and blast furnace cement have a tendency to be too sensitive to hydration, making their use rather inconvenient. In addition, Portland cement has poor acupuncture resistance, and concrete structures using it have drawbacks such as expansion cracks, and corrosion due to gold-containing substances such as humic acid inhibits the development of strength.
本発明の目的はこれらの欠点を悉く除去した、に影響を
受けない廃物利用による安価な排泥土、軟弱地盤の同化
、凝固剤を提供するに在り、この目的は、高炉水砕スラ
グと、三水石膏との微粉末原料混合物に硫酸アルミニウ
ム水酸化カルシウム、硫酸アルカリ塩の粉末混合物全硬
化促進剤として添加、混合して成る、本発明の水硬性セ
メント組成物によって達成される。The purpose of the present invention is to eliminate all of these drawbacks and to provide an inexpensive desilted soil, assimilation of soft ground, and a coagulant by using waste materials that are not affected by granulated blast furnace slag. This is achieved by the hydraulic cement composition of the present invention, which is formed by adding and mixing a powder mixture of aluminum sulfate calcium hydroxide and an alkali sulfate salt as a total hardening accelerator to a fine powder raw material mixture with water gypsum.
本発明組成物について説明すると、その主要原料である
高炉水砕スラグと、三水石膏とは前に説明したように製
鉄用溶鉱炉の副産物及び亜硫酸ガスからの廃物で、前者
それ自体には殆んど水との反応性はないが一種の潜在的
反応性を待つもののようで特に後者との配合において、
前記の硬化促進剤硫酸アルミニウム、水酸化カルシウム
及び硫酸カリま几は硫酸ナトリウムなどの硫酸アルカリ
塩の混合物を粉末として添加、混和することによって著
しく水利反応における硬化を促進する効果のあることが
今回発見されたものである。To explain the composition of the present invention, its main raw materials, granulated blast furnace slag and gypsum trihydrate, are by-products of iron-making blast furnaces and waste products from sulfur dioxide gas, and the former itself contains very little. Although it has no reactivity with water, it seems to have a kind of latent reactivity, especially in combination with the latter.
It has recently been discovered that the hardening accelerators aluminum sulfate, calcium hydroxide, and potassium sulfate have the effect of significantly accelerating hardening in water utilization reactions by adding and mixing a mixture of alkali sulfate salts such as sodium sulfate as a powder. It is what was done.
この水硬性促進の原因、機徊は現在十分に解明されてい
ないが、水和生成物として水利反応の初期から形成され
、硬化強度発揮の中枢をなすものはエトリンガイド（Ｅ
ｔｔｒｉｎｇｉｔｅ ） （３ＣａＯ−Ａ＆０３・３Ｃ
ａＳＯ４・３１〜３３Ｈ２０）ト推定される。すなわち
、この反応で潜在水硬性を有する水砕スラグは、上記の
硫酸アルミニウム、水酸化カルシウム及び硫酸苛性アル
カリ塩より成る硬化促進剤の作用によってその表面から
ＣａＯ、Ａ＆０３を溶出し、次で三水石膏（ＣａＳＯ４
・２Ｈ２０）と反応し、ニトリ／ガイドを形成して、略
７日後には短期強度全発見し、さらにスラグ中のＣａＯ
’ ＳｉＯ２・ｎＨ２Ｏの水和物を形成して、２８日後
には長期強度を発現するものと考えられる。The cause and mechanism of this promotion of hydraulic hardness are not fully understood at present, but ettrin guide (E
ttringite ) (3CaO-A&03・3C
aSO4・31-33H20) is estimated. That is, in this reaction, the granulated slag with latent hydraulic properties elutes CaO and A&03 from its surface by the action of the hardening accelerator consisting of aluminum sulfate, calcium hydroxide, and caustic sulfate, and then dissolves trihydric slag. Gypsum (CaSO4
・2H20) to form a nitride/guide, and after about 7 days, the short-term strength was fully discovered, and furthermore, CaO in the slag
' It is thought that a hydrate of SiO2.nH2O is formed and long-term strength is developed after 28 days.
次に本発明の水硬性セメント組成物の各成分の好ましい
配合死金実験の結果から求めると次のようになる。粉砕
して微粉末とした高炉水砕スラグと、三水石膏の混合比
は全体全１００重量部として高炉水砕スラグ：三水石膏
＝９５〜６５：５〜３５の重量比にあるのが好ましく、
硬化促進剤の添加比率は１〜６重敵部の範囲が望ましい
。Next, the following results are obtained from the results of experiments on preferred blending of each component of the hydraulic cement composition of the present invention. The mixing ratio of granulated blast furnace slag, which has been crushed into a fine powder, and trihydrate gypsum is preferably in a weight ratio of granulated blast furnace slag: trihydrate gypsum = 95 to 65:5 to 35, assuming a total of 100 parts by weight. ,
The addition ratio of the curing accelerator is preferably in the range of 1 to 6 times.
また硬化促進剤中の各成分比は次の重量比、硫酸アルミ
ニウム：水酸化カルシウム：硫酸アルカリ（硫酸カリ換
算）＝２５〜４０：５５〜３０：２０〜３０の範囲内に
在るのが好ましい。The ratio of each component in the curing accelerator is preferably within the following weight ratio: aluminum sulfate: calcium hydroxide: alkali sulfate (calculated as potassium sulfate) = 25-40:55-30:20-30. .
次に実施例上水す。Next, Example tap water.
微粉末水砕スラグ、７５重量部と、粉末工水石膏、２５
重量部を夫々採取し、さらに充分に混和する。この原料
に硫酸アルミニウム１．４９重級部、硫酸カリ１．５重
量部、水酸化カルシウム、１．５重量部の各粉末木硬化
促進剤金添加し、さらに粉砕混合して水硬性組成物をつ
くる。水１００に対し本発明の水硬性組成物を重量′″
ｒ：５０％、８０％、１００％、及び１５０％添加して
セメントモルタルをつくり、夫々について、７日及び２
８日委生後の圧縮強度（卆／ｒｒｎりを求めた結果を表
示すると次表のようになる。Finely powdered granulated slag, 75 parts by weight, powdered industrial gypsum, 25 parts by weight
Parts by weight are each taken and mixed thoroughly. To this raw material, 1.49 parts by weight of aluminum sulfate, 1.5 parts by weight of potassium sulfate, 1.5 parts by weight of calcium hydroxide, and 1.5 parts by weight of powdered wood hardening accelerator gold were added, and the mixture was ground and mixed to form a hydraulic composition. to make. The weight of the hydraulic composition of the present invention per 100 parts of water
Cement mortar was made by adding r: 50%, 80%, 100%, and 150%, respectively, for 7 days and 2 days.
The results of calculating the compressive strength (volume/rrn) after 8 days of aging are shown in the following table.
表−１
＝焚、：：ユニ：；。２．：：二、′２；具この実験結
果からみて本発明の高炉水砕スラグと工水石膏全原料と
し、硫漬アルミニウム、水酸化カルシウム、硫酸アルカ
リ塩の粉末混合物を硬化促進剤金する粉末水硬性セメン
ト組成物は十分に排泥水の固化処理、有害廃棄９勿の安
全化処理及び軟弱地盤及びヘドロ地盤の安定化に実質的
な硬化作用を有することが確認され几ものである。Table-1 =Taki, ::Uni:;. 2. ::2,'2; In view of the experimental results, it was found that the granulated blast furnace slag and industrial gypsum of the present invention were used as all raw materials, and the powdered water containing a powder mixture of sulfurized aluminum, calcium hydroxide, and alkali sulfate as a hardening accelerator was used. It has been confirmed that the hard cement composition has a substantial hardening effect for solidifying waste water, making hazardous waste safe, and stabilizing soft ground and sludge ground.
本発明によって廃物全利用し、エネルギーの消費金製せ
ず穏和で確実な水硬性全有するセメント組成物が得られ
たことになる。。According to the present invention, it is possible to obtain a cement composition that completely utilizes waste materials, consumes no energy, and has mild and reliable hydraulic properties. .
特許出願人 三井建設株式会社Patent applicant: Mitsui Construction Co., Ltd.
Claims (1)
硫「設アルミニウム、水酸化カルシウム、硫酸アルカリ
塩の粉末混合物を硬化促進剤として、添加、混合して成
る水硬性セメント組成物。 ２）前記高炉水砕スラブと、三水石膏との混合比がｔｊ
ｔによる高炉水砕スラグ：二水石←５〜６５：５〜３５
の比の範囲内にあるようにしり特許請求の範囲第１）項
に記載の組成物。 ３）前記硬化促進剤の組成が重量による硫酸アルミニウ
ム：水ば化カルシウム：硫酸アルカリ塩（硫酸カリ換算
）＝２５〜４０ ：５５〜３０：２０〜３０の範囲内に
あるようにした特許請求の範囲第１）項に記載の組成物
。 ４）前記微粉末原料混合物と、前記硬化促進存ｊとの比
が重量による１００対１〜６の範囲内にあるようにした
特許請求の範囲第１）項に記載の組成物、。[Claims] l) A powder mixture of sulfurized aluminum, calcium hydroxide, and an alkali sulfate salt is added and mixed as a hardening accelerator to a finely powdered raw material mixture of granulated blast furnace slag and gypsum trihydrate. Hydraulic cement composition. 2) The mixing ratio of the blast furnace granulated slab and trihydrate gypsum is tj
Granulated blast furnace slag by T: dihydrate ← 5-65: 5-35
The composition according to claim 1), wherein the ratio is within the range of . 3) The composition of the curing accelerator is within the range of aluminum sulfate:calcium hydrate:alkaline sulfate (calculated as potassium sulfate)=25-40:55-30:20-30 by weight. The composition according to scope 1). 4) The composition according to claim 1, wherein the ratio of the fine powder raw material mixture to the hardening accelerator j is 100 to 1 to 6 by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19901081A JPS5899147A (en) | 1981-12-10 | 1981-12-10 | Hydraulic cement composition comprising blast furnace water-granulated slag and gypsum dihydrate principally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19901081A JPS5899147A (en) | 1981-12-10 | 1981-12-10 | Hydraulic cement composition comprising blast furnace water-granulated slag and gypsum dihydrate principally |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5899147A true JPS5899147A (en) | 1983-06-13 |
Family
ID=16400602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19901081A Pending JPS5899147A (en) | 1981-12-10 | 1981-12-10 | Hydraulic cement composition comprising blast furnace water-granulated slag and gypsum dihydrate principally |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5899147A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875937A (en) * | 1987-10-29 | 1989-10-24 | Fosroc International Limited | Cementitious composition |
| WO1996035649A1 (en) * | 1995-05-11 | 1996-11-14 | Redco N.V. | Material with good fire-protecting properties and process for producing the same |
| WO2000078688A1 (en) | 1999-06-18 | 2000-12-28 | Mbt Holding Ag | Concrete admixture |
| KR100336919B1 (en) * | 1999-10-22 | 2002-05-15 | 황인태 | A compound for loess mortar or manufacturing method of compound for loess mortar |
| CN108658533A (en) * | 2017-03-28 | 2018-10-16 | 北京中实上庄混凝土有限责任公司 | Gunite concrete and preparation method thereof |
-
1981
- 1981-12-10 JP JP19901081A patent/JPS5899147A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875937A (en) * | 1987-10-29 | 1989-10-24 | Fosroc International Limited | Cementitious composition |
| WO1996035649A1 (en) * | 1995-05-11 | 1996-11-14 | Redco N.V. | Material with good fire-protecting properties and process for producing the same |
| WO2000078688A1 (en) | 1999-06-18 | 2000-12-28 | Mbt Holding Ag | Concrete admixture |
| KR100336919B1 (en) * | 1999-10-22 | 2002-05-15 | 황인태 | A compound for loess mortar or manufacturing method of compound for loess mortar |
| CN108658533A (en) * | 2017-03-28 | 2018-10-16 | 北京中实上庄混凝土有限责任公司 | Gunite concrete and preparation method thereof |
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