JP2002234758A - Cement admixture and cement composition - Google Patents
Cement admixture and cement compositionInfo
- Publication number
- JP2002234758A JP2002234758A JP2001030742A JP2001030742A JP2002234758A JP 2002234758 A JP2002234758 A JP 2002234758A JP 2001030742 A JP2001030742 A JP 2001030742A JP 2001030742 A JP2001030742 A JP 2001030742A JP 2002234758 A JP2002234758 A JP 2002234758A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- raw material
- cement admixture
- composition
- admixture
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00215—Mortar or concrete mixtures defined by their oxide composition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、土木・建築業界に
おいて使用されるセメント混和材及びセメント組成物に
関する。なお、本発明で使用する(部)や(％)は特に規定
のない限り質量基準である。[0001] The present invention relates to a cement admixture and a cement composition used in the civil engineering and construction industries. The terms “parts” and “%” used in the present invention are based on mass unless otherwise specified.
【０００２】[0002]
【従来の技術とその課題】これまでにセメント・コンク
リートの凝結を促進する化合物は数多く提案されてい
る。そのひとつに、セメント化学の分野ではC12A7と呼
ばれているCa12Al14O33で表される化合物（12CaO・7Al2O
3）が知られている（特開昭54-134735号公報）。C12A7
は、CaOとAl2O3の化合物であるカルシウムアルミネート
系化合物の中では比較的低い焼成温度で合成が可能で被
粉砕性も良好なため、キルンにより連続的に、かつ、多
量に合成できるばかりか、粉砕に費やす動力も少なくて
よいので経済性に優れるものである。しかしながら、C
12A7は水和反応速度が温度により大きく異なり、その凝
結促進効果も温度依存性が大きく、低温では充分な凝結
促進効果が得られないという課題を有するものであっ
た。2. Description of the Related Art Many compounds that promote the setting of cement and concrete have been proposed. One of them is a compound represented by Ca 12 Al 14 O 33 which is called C 12 A 7 in the field of cement chemistry (12CaO · 7Al 2 O
3 ) is known (JP-A-54-134735). C 12 A 7
Is a compound of CaO and Al 2 O 3 that can be synthesized at a relatively low firing temperature and has good crushability among calcium aluminate compounds, so it can be synthesized continuously and in large quantities by a kiln. Not only that, it requires less power for pulverization, so that it is economically excellent. However, C
The 12 A 7 varies greatly hydration reaction rate with temperature, the procoagulant effect temperature dependency is large and had a problem that can not be obtained sufficient setting accelerating effect at low temperatures.
【０００３】本発明者は、このような状況を鑑み、前記
課題を解消すべく種々検討した結果、C12A7にアルカリ
金属を固溶させることによって水和活性を大きくするこ
とに成功し、これをセメント混和材として使用すると、
低温での凝結促進効果が改善できることを知見し、本発
明を完成するに至った。[0003] In view of such a situation, the present inventor has conducted various studies to solve the above problems, and as a result, succeeded in increasing the hydration activity by dissolving an alkali metal in C 12 A 7 , If this is used as a cement admixture,
The inventors have found that the effect of accelerating the setting at low temperatures can be improved, and have completed the present invention.
【０００４】[0004]
【課題を解決するための手段】即ち、本発明は、CaO原
料、Al2O3原料、Na2O原料、及びハロゲン化合物を配合
して熱処理することによって得られるCa12-nAl14R2nO
33-yX2y（ただし、Rはアルカリ金属で、Xはハロゲンで
あり、0＜n≦1.0、0≦y≦1.0）の組成で示される物質を
含有してなるセメント混和材であり、Ca12-nAl14R2nO
33-yX2yのｎが0.1≦n≦1.0である該セメント混和材であ
り、Ca12-nAl14R2nO33-yX2yのｙが0.1≦y≦1.0である該
セメント混和材であり、セメントと該セメント混和材と
を含有してなるセメント組成物である。That is, the present invention relates to a Ca 12-n Al 14 R 2n obtained by blending a CaO raw material, an Al 2 O 3 raw material, a Na 2 O raw material, and a halogen compound, followed by heat treatment. O
33-y X 2y (where R is an alkali metal, X is a halogen, 0 <n ≦ 1.0, 0 ≦ y ≦ 1.0) is a cement admixture containing a substance represented by the composition, Ca 12-n Al 14 R 2n O
33-y X 2y is the cement admixture wherein n is 0.1 ≦ n ≦ 1.0, and Ca 12-n Al 14 R 2n O 33-y X 2y is the cement admixture wherein y is 0.1 ≦ y ≦ 1.0. Which is a cement composition containing cement and the cement admixture.
【０００５】[0005]
【発明の実施の形態】以下、本発明をさらに詳しく説明
する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.
【０００６】本発明のCa12-nAl14R2nO33-yX2y（ただ
し、Rはアルカリ金属で、Xはハロゲンであり、0＜n≦1.
0、0≦y≦1.0）で示される物質（以下、CARX物という）
は粉末Ｘ線回折法によると、12CaO・7Al2O3や11CaO・7Al2
O3・CaF2と同様の回折パターンを示す。具体的には、JCP
DSカードの登録番号で、12CaO・7Al2O3であるNo.9-413
や、11CaO・7Al2O3・CaF2であるNo.25-394と一致する回折
パターンを示す。アルカリ金属の具体例としては、例え
ば、リチウム(Li)、ナトリウム(Na)、及びカリウム(K)
などが挙げられ、特に限定されるものではないが、経済
性の面から、ナトリウムやカリウムを選択することが好
ましい。また、ハロゲンの具体例としては、フッ素
(F)、塩素(Cl)、及び臭素(Br)などが挙げられ、経済性
の面から、フッ素や塩素を選択することが好ましく、耐
久性の面からフッ素を選択することがより好ましい。CA
RX物のｎの値は、0＜ｎ≦1.0であり、0.1≦ｎ≦1.0が好
ましく、0.3≦ｎ≦1.0がより好ましい。ｎの値が0で
は、凝結促進効果、特に低温での凝結促進効果が充分で
なく、ｎが1.0を超えると物質中にRが固溶しなくなる場
合がある。また、ｙの値は、0≦y≦1.0であり、0.1≦y
≦1.0が好ましく、0.3≦y≦1.0がより好ましい。yの値
は０でもかまわないが、この場合にはCARX物の製造が困
難となる場合があり、yの値が1.0を超えると、物質中に
Xが固溶しなくなる場合がある。CARX物は、CaO原料、Al
2O3原料、Na2O原料、及びハロゲン化合物等を熱処理し
てなるものであり、それぞれの原料は、例えば、CaO原
料としては消石灰や石灰石粉末等が、Al2O3原料として
はボーキサイトやアルミ残灰等が、Na2O原料としては炭
酸ナトリウムや水酸化ナトリウムなどが、また、ハロゲ
ン化合物としてはホタル石、塩化カルシウム、フッ化ナ
トリウム、及び塩化ナトリウムなどがそれぞれ使用可能
である。熱処理方法は特に限定されるものではないが、
例えば、ロータリーキルンや電気炉等を使用する方法が
挙げられ、熱処理時間も特に限定されるものではない。
熱処理温度は特に限定されるものではないが、通常、1,
000〜1,500℃程度が好ましく、1,100〜1,400℃がより好
ましい。また、工業原料を用いてCARX物を製造する際に
は、例えば、MgO、TiO2、Fe2O3、B2O3、SiO2、P2O5、及
びSO3などの不純物の存在や混入が予想されるが特に限
定されるものではない。これらの存在は、熱処理時、CA
RX物の生成反応を促す効果を持つものや、CARX物の活性
を高める効果を持つものもあることから好ましい面もあ
り、本発明の目的を実質的に阻害しない範囲の量では問
題にならない。In the present invention, Ca 12-n Al 14 R 2n O 33-y X 2y (where R is an alkali metal, X is halogen, and 0 <n ≦ 1.
0, 0 ≤ y ≤ 1.0) (hereinafter referred to as CARX)
According to the powder X-ray diffraction method, 12CaO.7Al 2 O 3 and 11CaO.7Al 2
It shows the same diffraction pattern as O 3 .CaF 2 . Specifically, JCP
In DS card registration number, which is 12CaO · 7Al 2 O 3 No.9-413
And shows a diffraction pattern consistent with 11CaO · 7Al 2 O 3 · CaF 2 and is Nanba25-394. Specific examples of the alkali metal, for example, lithium (Li), sodium (Na), and potassium (K)
Although not particularly limited, sodium and potassium are preferably selected from the viewpoint of economy. Examples of halogen include fluorine.
(F), chlorine (Cl), bromine (Br) and the like. It is preferable to select fluorine or chlorine from the viewpoint of economy, and it is more preferable to select fluorine from the viewpoint of durability. CA
The value of n of the RX product is 0 <n ≦ 1.0, preferably 0.1 ≦ n ≦ 1.0, more preferably 0.3 ≦ n ≦ 1.0. When the value of n is 0, the effect of accelerating the coagulation, particularly the effect of accelerating the coagulation at a low temperature, is not sufficient. The value of y is 0 ≦ y ≦ 1.0, and 0.1 ≦ y
≦ 1.0 is preferred, and 0.3 ≦ y ≦ 1.0 is more preferred. The value of y may be 0, but in this case, it may be difficult to manufacture a CARX product.
X may not be dissolved. CARX material is CaO raw material, Al
2 O 3 raw material, Na 2 O raw material, and a heat treatment of a halogen compound and the like, each raw material, for example, slaked lime or limestone powder as a CaO raw material, bauxite or Al 2 O 3 raw material Aluminum residual ash and the like, sodium carbonate and sodium hydroxide as the Na 2 O raw material, and fluorite, calcium chloride, sodium fluoride, sodium chloride and the like can be used as the halogen compounds. The heat treatment method is not particularly limited,
For example, a method using a rotary kiln, an electric furnace, or the like is used, and the heat treatment time is not particularly limited.
The heat treatment temperature is not particularly limited, but is usually 1,
The temperature is preferably about 000 to 1,500 ° C, more preferably 1,100 to 1,400 ° C. In addition, when manufacturing CARX products using industrial raw materials, for example, the presence of impurities such as MgO, TiO 2 , Fe 2 O 3 , B 2 O 3 , SiO 2 , P 2 O 5 , and SO 3 Mixing is expected, but not particularly limited. Their presence during heat treatment, CA
Some of them have the effect of promoting the reaction of generating RX substances and the other have the effect of increasing the activity of CARX substances, which is preferable in some respects, and does not pose a problem if the amount does not substantially inhibit the object of the present invention.
【０００７】本発明のセメント混和材は、CARX物を主成
分とするが、各原料の配合割合を調節することによっ
て、様々な化合物が副生する。その具体例としては、Ca
OをC、Al2O3をA、Fe2O3をF、R2O（Na2O、K2O、Li2O）を
Rとすると、C3Aやこれにアルカリ金属が固溶したC14R
A5、CAやC3R2A5、C4AF、C3A3・CaSO4、C2AS、C3SやC2Sな
どのカルシウムシリケート、遊離石灰、及びアルミン酸
アルカリなどが挙げられる。これらの存在は特に限定さ
れるものではなく、本発明の目的を実質的に阻害しない
範囲では問題にならない。本発明のセメント混和材の粒
度は特に限定されるものではないが、ブレーン比表面積
値（以下、ブレーン値という）で3,000〜9,000cm2/g程
度が好ましい。3,000cm2/g未満では充分な凝結促進効果
が得られない場合があり、9,000cm2/gを超えるように粉
砕してもさらなる効果の増進が期待できない。本発明の
セメント混和材の使用量は、セメントとセメント混和材
からなる結合材100部中、３〜20部が好ましく、５〜15
部がより好ましい。３部未満では充分な凝結促進効果が
得られない場合があり、20部を超えて使用してもさらな
る効果の増進が期待できない。[0007] The cement admixture of the present invention mainly contains a CARX material, but various compounds are produced as by-products by adjusting the mixing ratio of each raw material. Specific examples include Ca
O for C, Al 2 O 3 for A, Fe 2 O 3 for F, R 2 O (Na 2 O, K 2 O, Li 2 O)
Let R be C 3 A or C 14 R in which alkali metal is dissolved.
A 5, CA and C 3 R 2 A 5, C 4 AF, C 3 A 3 · CaSO 4, C 2 AS, calcium silicates, such as C 3 S and C 2 S, free lime, and the like alkali aluminate is Can be Their presence is not particularly limited, and does not matter as long as the object of the present invention is not substantially inhibited. The particle size of the cement admixture of the present invention is not particularly limited, but is preferably about 3,000 to 9,000 cm 2 / g in terms of Blaine specific surface area (hereinafter referred to as Blaine value). If it is less than 3,000 cm 2 / g, a sufficient effect of accelerating the setting may not be obtained, and even if it is crushed so as to exceed 9,000 cm 2 / g, further enhancement of the effect cannot be expected. The amount of the cement admixture of the present invention is preferably 3 to 20 parts in 100 parts of the binder composed of cement and the cement admixture, and 5 to 15 parts.
Parts are more preferred. If the amount is less than 3 parts, a sufficient setting promoting effect may not be obtained, and even if the amount exceeds 20 parts, further enhancement of the effect cannot be expected.
【０００８】ここでセメントとしては、普通、早強、超
早強、低熱、及び中庸熱等の各種ポルトランドセメン
ト、これらポルトランドセメントに、シリカや高炉スラ
グなどのポゾラン物質を混合した各種混合セメント、並
びに、アルミナセメントなどが挙げられる。[0008] Here, as the cement, various kinds of Portland cements, such as ordinary, early high strength, ultra-high strength, low heat and moderate heat, various mixed cements obtained by mixing these portland cements with pozzolanic substances such as silica and blast furnace slag; , Alumina cement and the like.
【０００９】水の使用量は特に限定されるものではな
く、通常の使用範囲が使用される。具体的には、水／セ
メント組成物比25〜100％が好ましく、30〜60％がより
好ましい。25％未満では充分な作業性が得られない場合
があり、100％を超えると充分な強度発現性が得られな
い場合がある。[0009] The amount of water used is not particularly limited, and a normal use range is used. Specifically, the water / cement composition ratio is preferably 25 to 100%, more preferably 30 to 60%. If it is less than 25%, sufficient workability may not be obtained, and if it exceeds 100%, sufficient strength development may not be obtained.
【００１０】本発明のセメント組成物を使用したセメン
ト混練物の養生方法は、特に限定されるものではなく、
一般に行われている養生方法が可能である。[0010] The curing method of the cement kneaded material using the cement composition of the present invention is not particularly limited.
General curing methods are possible.
【００１１】また、混練方法も、一般に用いられる方法
でよく、特に限定されるものではない。The kneading method may be a commonly used method, and is not particularly limited.
【００１２】本発明のセメント混和材又はセメント組成
物製造時に使用する混合装置としては、既存のいかなる
攪拌装置も使用可能であり、例えば、傾胴ミキサ、オム
ニミキサ、Ｖ型ミキサ、ヘンシェルミキサ、及びナウタ
ミキサなどが使用可能である。As the mixing device used in the production of the cement admixture or the cement composition of the present invention, any existing stirring device can be used. Etc. can be used.
【００１３】また、混合はそれぞれの材料を施工時に混
合してもよいし、あらかじめ一部を、あるいは全部を混
合しておいても差し支えない。The mixing may be carried out by mixing the respective materials at the time of construction or by mixing a part or all of them in advance.
【００１４】本発明では、セメントとセメント混和材の
他に、砂や砂利等の骨材、補強繊維材、減水剤、高性能
減水剤、高性能ＡＥ減水剤、増粘剤、セメント膨張材、
防錆剤、防凍剤、酸化カルシウムや水酸化カルシウムな
どのカルシウム化合物、ベントナイトやモンモリロナイ
トなどの粘土鉱物、並びに、ゼオライト、ハイドロタル
サイト、及びハイドロカルマイトなどのイオン交換体等
を本発明の目的を実質的に阻害しない範囲で併用するこ
とが可能である。In the present invention, in addition to cement and cement admixtures, aggregates such as sand and gravel, reinforcing fiber materials, water reducing agents, high performance water reducing agents, high performance AE water reducing agents, thickeners, cement expanding materials,
Antirust agents, antifreeze agents, calcium compounds such as calcium oxide and calcium hydroxide, clay minerals such as bentonite and montmorillonite, and ion exchangers such as zeolites, hydrotalcite, and hydrocalumite are the objects of the present invention. It is possible to use them together as long as they are not substantially inhibited.
【００１５】[0015]
【実施例】以下、実験例により本発明を詳細に説明す
る。Hereinafter, the present invention will be described in detail with reference to experimental examples.
【００１６】実験例１ CaO原料、Al2O3原料、R2O原料、及びハロゲン化合物を
配合し、混合・粉砕してCARX物原料を調製した。次い
で、電気炉を用いて1,200℃で２時間熱処理する工程を
生成物が単一相となるまで繰り返すことによってCARX物
を合成した。合成したCARX物の化学組成と鉱物組成を求
めた。その結果を表１に示す。EXPERIMENTAL EXAMPLE 1 A CaO raw material, an Al 2 O 3 raw material, an R 2 O raw material, and a halogen compound were blended, mixed and pulverized to prepare a CARX raw material. Then, a step of heat-treating at 1200 ° C. for 2 hours using an electric furnace was repeated until the product became a single phase, thereby synthesizing a CARX product. The chemical and mineral compositions of the synthesized CARX were determined. Table 1 shows the results.
【００１７】＜使用材料＞ CaO原料 ：炭酸カルシウム、試薬特級 Al2O3原料 ：酸化アルミニウム、試薬特級 R2O原料Ａ ：炭酸ナトリウム、試薬特級 R2O原料Ｂ ：炭酸カリウム、試薬特級 R2O原料Ｃ ：炭酸リチウム、試薬特級 ハロゲン化合物ａ：フッ化カルシウム、CaF2、試薬特級 ハロゲン化合物ｂ：塩化カルシウム、CaCl2、試薬特級 ハロゲン化合物ｃ：臭化カルシウム、CaBr2、試薬特級<Materials Used> CaO raw material: calcium carbonate, reagent grade Al 2 O 3 raw material: aluminum oxide, reagent grade R 2 O raw material A: sodium carbonate, reagent grade R 2 O raw material B: potassium carbonate, reagent grade R 2 O material C: lithium carbonate, special grade halogen compound a: calcium fluoride, CaF 2, special grade reagent halogen compound b: calcium chloride, CaCl 2, special grade reagent halogen compound c: calcium bromide, CaBr 2, reagent grade
【００１８】＜測定方法＞ 化学組成 ：JIS R 5202に準じて、化学分析 鉱物組成 ：粉末Ｘ線回折法（ＸＲＤ）によって同定<Measurement method> Chemical composition: Chemical analysis according to JIS R 5202 Mineral composition: Identified by powder X-ray diffraction (XRD)
【００１９】[0019]
【表１】 [Table 1]
【００２０】実験例２ 実験例１で合成した各種CARX物をブレーン値6,000±200
cm2/gに粉砕してセメント混和材とし、セメント組成物1
00部中、10部配合し、セメント組成物／砂比＝１／３、
水／セメント組成物比＝50％でモルタルを調製した。調
製したモルタルの凝結時間測定した。結果を表２に併記
する。EXPERIMENTAL EXAMPLE 2 The various CARX compounds synthesized in Experimental Example 1 were subjected to a Blaine value of 6,000 ± 200.
cm 2 / g to obtain a cement admixture, cement composition 1
In 00 parts, 10 parts were blended, and the cement composition / sand ratio = 1/3,
Mortar was prepared with a water / cement composition ratio = 50%. The setting time of the prepared mortar was measured. The results are also shown in Table 2.
【００２１】 ＜使用材料＞ セメント ：電気化学工業社製、普通ポルトランドセメント 砂 ：JIS標準砂、ISO 679準拠 水 ：水道水<Material> Cement: Made by Denki Kagaku Kogyo Co., Ltd., ordinary Portland cement Sand: JIS standard sand, ISO 679 compliant Water: Tap water
【００２２】＜測定方法＞ 凝結試験 ：ASTM C 403に準じて、プロクター貫入抵抗
試験により凝結の始発時間を測定<Measurement method> Coagulation test: The first time of coagulation is measured by a proctor penetration resistance test according to ASTM C403.
【００２３】[0023]
【表２】 [Table 2]
【００２４】実験例３ ＲがNaで、ｎが0.5、ＸがＦで、ｙが0.5のCARX物（セメ
ント混和材Ｊ）を使用し、表３に示す量のセメント混和
材を用いたこと以外は実験例２と同様に行った。結果を
表３に併記する。Experimental Example 3 Except that a CARX material (cement admixture J) in which R was Na, n was 0.5, X was F and y was 0.5 was used, and the amount of cement admixture shown in Table 3 was used. Was performed in the same manner as in Experimental Example 2. The results are also shown in Table 3.
【００２５】[0025]
【表３】 [Table 3]
【００２６】[0026]
【発明の効果】本発明のセメント混和材を使用すること
によって、セメント・コンクリートの凝結硬化を促進せ
しめることができ、特に低温での凝結促進効果に優れる
セメント組成物が得られるなどの効果を奏する。EFFECT OF THE INVENTION By using the cement admixture of the present invention, the setting and hardening of cement concrete can be promoted, and in particular, a cement composition having an excellent effect of promoting setting at low temperatures can be obtained. .
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 光男 新潟県西頚城郡青海町大字青海2209番地 電気化学工業株式会社青海工場内 Ｆターム(参考） 4G012 MA00 MB08 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Mitsuo Takahashi 2209 Aomi, Aomi-cho, Nishikubiki-gun, Niigata F-term in the Aomi Plant of Denki Kagaku Kogyo Co., Ltd. 4G012 MA00 MB08
Claims (4)
ロゲン化合物を配合して熱処理することによって得られ
る、Ca12-nAl14R2nO33-yX2y（ただし、Rはアルカリ金属
で、Xはハロゲンであり、0＜n≦1.0、0≦y≦1.0）の組
成で示される物質を含有してなるセメント混和材。1. A CaO material, Al 2 O 3 raw material, obtained by heat treatment by compounding Na 2 O material, and a halogen compound, Ca 12-n Al 14 R 2n O 33-y X 2y ( provided that R is an alkali metal, X is a halogen, and a cement admixture containing a substance represented by the composition of 0 <n ≦ 1.0, 0 ≦ y ≦ 1.0).
1.0であることを特徴とする請求項１記載のセメント混
和材。2. The n of Ca 12-n Al 14 R 2n O 33-y X 2y is 0.1 ≦ n ≦
2. The cement admixture according to claim 1, wherein the value is 1.0.
1.0であることを特徴とする請求項１又は２記載のセメ
ント混和材。(3) y of Ca 12-n Al 14 R 2n O 33-y X 2y is 0.1 ≦ y ≦
3. The cement admixture according to claim 1, wherein the cement admixture is 1.0.
記載のセメント混和材とを含有してなるセメント組成
物。4. A cement composition comprising a cement and the cement admixture according to claim 1.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524893A (en) * | 1991-07-16 | 1993-02-02 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JPH0891896A (en) * | 1994-09-19 | 1996-04-09 | Chichibu Onoda Cement Corp | High hydration active substance, cement curing accelerator and method for accelerating setting and hardening of concrete or mortar |
| JPH09249437A (en) * | 1996-03-13 | 1997-09-22 | Chichibu Onoda Cement Corp | Production of quick setting base material for hardening accelerator |
| JPH10101397A (en) * | 1996-09-30 | 1998-04-21 | Denki Kagaku Kogyo Kk | Spraying material and spraying method using the same |
-
2001
- 2001-02-07 JP JP2001030742A patent/JP4814431B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524893A (en) * | 1991-07-16 | 1993-02-02 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JPH0891896A (en) * | 1994-09-19 | 1996-04-09 | Chichibu Onoda Cement Corp | High hydration active substance, cement curing accelerator and method for accelerating setting and hardening of concrete or mortar |
| JPH09249437A (en) * | 1996-03-13 | 1997-09-22 | Chichibu Onoda Cement Corp | Production of quick setting base material for hardening accelerator |
| JPH10101397A (en) * | 1996-09-30 | 1998-04-21 | Denki Kagaku Kogyo Kk | Spraying material and spraying method using the same |
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