JPH05147985A - Quick hardening cement composition - Google Patents
Quick hardening cement compositionInfo
- Publication number
- JPH05147985A JPH05147985A JP34028391A JP34028391A JPH05147985A JP H05147985 A JPH05147985 A JP H05147985A JP 34028391 A JP34028391 A JP 34028391A JP 34028391 A JP34028391 A JP 34028391A JP H05147985 A JPH05147985 A JP H05147985A
- Authority
- JP
- Japan
- Prior art keywords
- cement composition
- quick hardening
- hardening cement
- composition
- rapid
- 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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、急硬性、作業性、強度
発現性、及び長期安定性に優れた急硬性セメント組成物
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapid hardening cement composition which is excellent in rapid hardening property, workability, strength development and long-term stability.
【０００２】本発明の産業上の利用分野としては、土木
・建築分野を中心にコンクリ−ト二次製品、漏水箇所、
及び建築構造物等の補修、並びに、止水等が考えられ
る。The industrial fields of use of the present invention are mainly in the field of civil engineering and construction, secondary concrete products, water leakage points,
It is also possible to repair building structures and stop water.
【０００３】[0003]
【従来の技術とその課題】従来、急硬材は土木・建築分
野におけるセメントコンクリ−ト構造物の漏水箇所等の
補修材や止水材などとして使用されている。2. Description of the Related Art Conventionally, quick-hardening materials have been used as repairing materials for water leakage points of cement concrete structures and water-stopping materials in the field of civil engineering and construction.
【０００４】補修材としては、建築物の壁、床、及び屋
上等にポリマ−セメント系急硬性セメントが使用されて
いるが、硬化時間が長く、モルタルにクラックやひび割
れが入りやすいなどの課題があった(特公平2-10112号公
報、特公平1-39713号公報)。As a repair material, polymer-cement type rapid hardening cement is used for the walls, floors, roofs, etc. of buildings, but it has a long curing time and is apt to have cracks and cracks in the mortar. There was (Japanese Patent Publication No. 2-10112, Japanese Patent Publication No. 1-39713).
【０００５】また、止水用として使用される止水材は、
セメントコンクリ−ト構造物の漏水止水工事やトンネル
内の止水工事などに使用されている。The water-stopping material used for water-stopping is
It is used for water leakage stop work of cement concrete structures and water stop work in tunnels.
【０００６】しかしながら、市販されている急硬材は、
例えばポルトランドセメントを主体としているが、急硬
性や強度発現性が遅く、使用温度範囲が限定されるなど
の課題があった(特開昭52-97211号公報、特開昭52-9721
2号公報など)。However, the commercially available rapid hardening materials are
For example, although Portland cement is mainly used, there are problems such as rapid hardening and slow strength development, and limited use temperature range (JP-A-52-97211 and JP-A-52-9721).
No. 2 bulletin).
【０００７】さらに、止水材として、ポルトランドセメ
ント、塩化カルシウム、及びアルミン酸ナトリウム等か
らなるものがあるが、これらの止水材は凝結時間が長
く、急硬性が弱いために湧水箇所の施工等において課題
が多く、また、初期の強度発現性が悪い、長期的に強度
が伸びないなどの課題があった(特開昭56-160357号公
報、特開昭63-256559 号公報) 。[0007] Further, as the water blocking material, there are those made of portland cement, calcium chloride, sodium aluminate and the like. However, since these water blocking materials have a long setting time and weak rapid hardening, the construction of the spring location is carried out. However, there were many problems such as poor strength development in the initial stage, and the strength did not grow in the long term (JP-A-56-160357 and JP-A-63-256559).
【０００８】本発明者らは、従来の急硬材の有する前記
課題を解消し、凝結時間が速い。実用強度に短時間
で達する。コンクリ−トやモルタルに対して強い接着
力を持つ。長期的に安定で、鉄筋等の金属類を腐食す
る恐れがない。作業性が容易である。等、急硬材とし
て要求される性能を満足する急硬材を提供することを目
的とし、種々検討の結果、特定の材料を使用することに
よって、前記従来技術のもつ課題を克服し、急硬性、作
業性、及び強度発現性等に優れる急硬性セメント組成物
が得られる知見を得て本発明を完成するに至った。The inventors of the present invention have solved the above problems of conventional rapid hardening materials and have a fast setting time. The practical strength is reached in a short time. Has a strong adhesion to concrete and mortar. It is stable for a long period of time, and there is no risk of corroding metals such as reinforcing bars. Easy workability. For the purpose of providing a rapidly hardened material that satisfies the performance required as a rapidly hardened material, as a result of various studies, by using a specific material, the problems of the above-mentioned prior art are overcome and The present invention has been completed based on the finding that a rapid-hardening cement composition excellent in workability and strength development can be obtained.
【０００９】[0009]
【課題を解決するための手段】即ち、本発明は、CaOが2
0〜35％、Al2O3が30〜45％、及びSiO2が20〜35％の化学
組成と、2CaO・Al2O3・SiO2及び／又はCaO・Al2O3・2SiO2の
鉱物組成とを含有し、非晶化率が70％以上であることを
特徴とする急硬性セメント組成物であり、中心粒径が５
μm以下である該急硬性セメント組成物である。[Means for Solving the Problems] That is, according to the present invention, CaO
Chemical composition of 0-35%, Al 2 O 3 30-45%, and SiO 2 20-35%, and 2CaO · Al 2 O 3 · SiO 2 and / or CaO · Al 2 O 3 · 2SiO 2 A rapid hardening cement composition containing a mineral composition and having an amorphization ratio of 70% or more, and a central particle size of 5
The rapid-hardening cement composition having a size of not more than μm.
【００１０】以下、本発明を詳細に説明する。The present invention will be described in detail below.
【００１１】本発明に係る急硬性セメント組成物は、ア
ルミナ源としてボーキサイト、高アルミナ質、及び精製
アルミナ等を、カルシア源として石灰石や生石灰など
を、また、シリカ源としてシャモット、硅石、及び硅砂
等を使用し、電気炉、反射炉、平炉及びロータリーキル
ン等で、溶融又は焼成したセメントクリンカーを、粉砕
して製造することが可能である。The rapid hardening cement composition according to the present invention comprises bauxite, high-alumina and refined alumina as an alumina source, limestone and quicklime as a calcia source, and chamotte, silica and silica sand as a silica source. It is possible to produce by crushing the molten or fired cement clinker in an electric furnace, reverberatory furnace, open furnace, rotary kiln, etc.
【００１２】急硬性セメント組成物の主要化学組成は、
CaOが20〜35％、Al2O3が30〜45％、及びSiO2が20〜35％
であり、CaOが30〜45％、Al2O3が35〜40％、SiO2が20〜
35％の化学組成が好ましい。前記範囲外では急硬性が低
下する傾向がある。The main chemical composition of the rapid hardening cement composition is
CaO 20-35%, Al 2 O 3 30-45%, and SiO 2 20-35%
And CaO is 30-45%, Al 2 O 3 is 35-40%, and SiO 2 is 20-
A chemical composition of 35% is preferred. If the content is out of the above range, the rapid hardness tends to decrease.
【００１３】また、生成物中の主要鉱物組成は、2CaO・A
l2O3・SiO2及び／叉はCaO・Al2O3・2SiO2である。The main mineral composition of the product is 2CaO.A.
l 2 O 3 · SiO 2 and / or CaO · Al 2 O 3 · 2SiO 2 .
【００１４】さらに、急硬性セメント組成物の非晶化率
は70％以上であり、80％以上が好ましい。非晶化率が70
％未満では急硬性が低下する傾向がある。Further, the amorphization rate of the rapid hardening cement composition is 70% or more, preferably 80% or more. Amorphization rate is 70
If it is less than%, the rapid hardening tends to decrease.
【００１５】非晶化率の判断は、粉末Ｘ線回折法に基づ
く回折線消出により行うことが可能である。即ち、2CaO
・Al2O3・SiO2及びCaO・Al2O3・2SiO2となる原料配合を用い
製造したものの結晶質のピ−ク高さから、予め作成した
既知の割合のピ−ク高さの検量線を用いて決定するもの
で、非晶化率の割合は次式による。 非晶化率(％)＝100−(ピ−ク面積／全面積)×100The amorphization rate can be judged by the diffraction line extinction based on the powder X-ray diffraction method. That is, 2CaO
・ Al 2 O 3・ SiO 2 and CaO ・ Al 2 O 3・ 2SiO 2 are produced from the crystalline peak height of the product, and the peak height of a known ratio is prepared in advance. It is determined using a calibration curve, and the ratio of the amorphization rate is calculated by the following formula. Amorphization rate (%) = 100- (peak area / total area) x 100
【００１６】非晶化率を70％以上とする方法は、特に限
定されるものではないが、一般に溶解や焼成によって製
造したクリンカ−を水や空気などに接触させ急冷する方
法が用いられる。The method for making the amorphization rate at 70% or more is not particularly limited, but a method in which a clinker produced by melting or firing is brought into contact with water, air or the like and rapidly cooled is generally used.
【００１７】急硬性セメント組成物の粒度は、中心粒径
が５μm以下が好ましく、４μm以下がより好ましい。中
心粒径が５μmを越えると作業性が低下する傾向があ
る。急硬性セメント組成物の粉砕方法は特に限定される
ものではない。Regarding the particle size of the rapid hardening cement composition, the central particle size is preferably 5 μm or less, more preferably 4 μm or less. If the median particle size exceeds 5 μm, workability tends to decrease. The method for crushing the rapid hardening cement composition is not particularly limited.
【００１８】本発明では、以上の材料の他に、本発明の
特性を失わない範囲において、例えば、ポルトランドセ
メント、骨材、顔料、分散剤、充填剤、消泡剤、及び繊
維等を適宜併用することも可能である。In the present invention, in addition to the above materials, for example, Portland cement, aggregates, pigments, dispersants, fillers, defoaming agents, fibers and the like are appropriately used in combination within the range in which the characteristics of the present invention are not lost. It is also possible to do so.
【００１９】以上の材料を用いて急硬材組成物を使用す
るには、通常、各粉未材料を混合し、必要に応じて水分
を加えて十分に混練する。混合方法や混練方法は特に限
定されるものではなく、一般に使用される方法が用いら
れる。To use the rapid-hardening material composition by using the above-mentioned materials, usually, each powdery material is mixed, and if necessary, water is added and sufficiently kneaded. The mixing method and kneading method are not particularly limited, and commonly used methods are used.
【００２０】[0020]
【実施例】以下、実施例に基づき本発明をさらに説明す
る。EXAMPLES The present invention will be further described below based on examples.
【００２１】実施例１ アルミナ源としてボ−キサイト、カルシア源として生石
灰、シリカ源としてシャモットを用いて生成物中のCa
O、Al2O3、及びSiO2が表１に示すような化学組成となる
ような急硬性セメント組成物を作成した。この急硬性セ
メント組成物を粉砕し５μm以下にしたものを100重量
部、砂200重量部、及び水65重量部を、20℃恒温室にて
混練して、セメントモルタルを調整し、その凝結時間、
貫入抵抗、及び強度を測定し、さらに、モルタル性状を
判定した。結果を表１に併記する。Example 1 Ca in the product was obtained by using bauxite as the alumina source, quick lime as the calcia source, and chamotte as the silica source.
A rapid-hardening cement composition was prepared in which O, Al 2 O 3 , and SiO 2 had the chemical compositions shown in Table 1. This rapid-hardening cement composition was pulverized to 5 μm or less, and 100 parts by weight, 200 parts by weight of sand, and 65 parts by weight of water were kneaded in a thermostatic chamber at 20 ° C. to prepare a cement mortar, and the setting time thereof ,
The penetration resistance and the strength were measured, and the mortar properties were determined. The results are also shown in Table 1.
【００２２】＜使用材料＞ 骨材 ：硅砂、JIS.７号 ポルトランドセメント：中央セメント社製普通ポルトラ
ンドセメント 超速硬セメント：小野田セメント社製商品名「ジェット
セメント」<Materials used> Aggregate: Silica sand, JIS No. 7 Portland cement: Normal Portland cement manufactured by Chuo Cement Co., Ltd. Super rapid hardening cement: Product name “Jet cement” manufactured by Onoda Cement Co.
【００２３】＜測定方法＞ 凝結時間：ビカ−針装置を用いて、標準セメントモルタ
ルを作成し、手早く容器の中に入れ、始発時間と終結時
間の測定を行った。 貫入抵抗：プロクタ−貫入抵抗器を用いてセメントモル
タルの10分での貫入抵抗を測定した。 作業性 ：作業性は、フロ−値で判定した。フロ−値
は、テ−ブル中央の所定の位置にフロ−コ−ンを置きそ
の中にモルタルを詰め表面を平滑にする。次ぎに、フロ
−コ−ンを上の方に取り去りモルタルのひろがりの直径
を測定しフロ−値とした。 性状判定：硬化体の収縮、付着性の性状を目視と触指に
より判定した。性状は、良は〇、不良は×、中間を△と
した。<Measurement method> Setting time: A standard cement mortar was prepared using a Beka-needle device, quickly put in a container, and the starting time and the ending time were measured. Penetration resistance: The penetration resistance of the cement mortar at 10 minutes was measured using a proctor-penetration resistor. Workability: Workability was determined by the flow value. The flow value is such that a flow cone is placed at a predetermined position in the center of the table and mortar is filled therein to make the surface smooth. Next, the flow cone was removed to the upper side, and the diameter of the spread of the mortar was measured to obtain the flow value. Property determination: The properties of shrinkage and adhesion of the cured product were evaluated visually and by touch. As for the property, the good condition was ◯, the bad condition was ×, and the middle condition was Δ.
【００２４】[0024]
【表１】 [Table 1]
【００２５】表１から明らかなように、本発明の急硬性
セメント組成物は、急硬性、作業性に優れ、収縮が少な
い。また、凝結時間が速く、強度も大きい。これに反
し、比較例は、凝結時間が遅く、強度が小さく、作業性
が悪く、収縮が大きくなりやすくなる。As is clear from Table 1, the rapid-hardening cement composition of the present invention has excellent rapid-hardening property, workability, and little shrinkage. It also has a fast setting time and high strength. On the other hand, in the comparative example, the setting time is slow, the strength is low, the workability is poor, and the shrinkage tends to be large.
【００２６】[0026]
【発明の効果】本発明の急硬性セメント組成物を使用す
ると、従来のものに比較して凝結時間が速く、急硬性、
作業性、強度発現性、及び長期安定性に優れ、収縮が少
なくなる。等の効果を奏する。従って、土木、建材分野
を中心に補修材、防食材、及び止水材等へ使用すること
が可能となる。EFFECTS OF THE INVENTION When the rapid hardening cement composition of the present invention is used, the setting time is faster than the conventional one, and the rapid hardening property is
Excellent workability, strength development and long-term stability, and less shrinkage. And other effects. Therefore, it can be used mainly in the field of civil engineering and building materials as a repair material, an anti-food material, and a waterproof material.
Claims (2)
SiO2が20〜35％の化学組成と、2CaO・Al2O3・SiO2及び／
又はCaO・Al2O3・2SiO2の鉱物組成とを含有し、非晶化率
が70％以上であることを特徴とする急硬性セメント組成
物。1. CaO is 20 to 35%, Al 2 O 3 is 30 to 45%, and
Chemical composition of 20 to 35% SiO 2 , 2CaO ・ Al 2 O 3・ SiO 2 and /
Alternatively, a rapid hardening cement composition containing a mineral composition of CaO.Al 2 O 3 .2SiO 2 and having an amorphization rate of 70% or more.
とする請求項１記載の急硬性セメント組成物。2. The rapid hardening cement composition according to claim 1, which has a central particle diameter of 5 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3340283A JP2996557B2 (en) | 1991-11-29 | 1991-11-29 | Rapid hardening cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3340283A JP2996557B2 (en) | 1991-11-29 | 1991-11-29 | Rapid hardening cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05147985A true JPH05147985A (en) | 1993-06-15 |
| JP2996557B2 JP2996557B2 (en) | 2000-01-11 |
Family
ID=18335460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3340283A Expired - Fee Related JP2996557B2 (en) | 1991-11-29 | 1991-11-29 | Rapid hardening cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2996557B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005089232A (en) * | 2002-12-25 | 2005-04-07 | Tokuyama Corp | Method of producing cement composition |
-
1991
- 1991-11-29 JP JP3340283A patent/JP2996557B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005089232A (en) * | 2002-12-25 | 2005-04-07 | Tokuyama Corp | Method of producing cement composition |
| JP4494743B2 (en) * | 2002-12-25 | 2010-06-30 | 株式会社トクヤマ | Method for producing cement composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2996557B2 (en) | 2000-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2777216T3 (en) | Composition for use as a two component filler grout comprising extracted silicate | |
| US9656918B2 (en) | Hydraulic binder based on ground granulated blast furnace slag having improved setting improved curing | |
| JP2951385B2 (en) | Polymer cement mortar composition | |
| US6231665B1 (en) | Efflorescence control in cementitious compositions and masonry units | |
| JP2000272943A (en) | Cement admixture, cement composition and grout material | |
| JP7037879B2 (en) | Early-strength admixture for secondary products and early-strength concrete for secondary products | |
| JP2013095624A (en) | Quick-hardening agent and quick-hardening cement composition | |
| JP7034573B2 (en) | Fast-curing polymer cement composition and fast-curing polymer cement mortar | |
| JP7085050B1 (en) | Cement admixture, hard mortar concrete material, hard mortar concrete composition, and hardened material | |
| JP2004210557A (en) | Grout composition | |
| JP3105603B2 (en) | Rapid hardening cement composition | |
| JP2710351B2 (en) | Rapidly setting polymer cement composition | |
| JPH082951A (en) | Cement composition | |
| JP2996557B2 (en) | Rapid hardening cement composition | |
| JP7083637B2 (en) | Concrete and its manufacturing method | |
| JPH0532436A (en) | Quick hardening cement composition | |
| JP3182156B2 (en) | Hydraulic material and hydraulic injection material | |
| JP2963156B2 (en) | Mortar composition | |
| JP2014129212A (en) | Quick-hardening additive and quick-hardening grout composition | |
| JP5132022B2 (en) | Cement admixture and cement composition | |
| JPH0776122B2 (en) | Alumina cement composition | |
| JPH04270158A (en) | Hydraulic grouting material | |
| JP7037877B2 (en) | Early-strength admixture for secondary products and early-strength concrete for secondary products | |
| JP7037878B2 (en) | Early-strength admixture for secondary products and early-strength concrete for secondary products | |
| JP2024501295A (en) | Three-component hydraulic binder composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 9 Free format text: PAYMENT UNTIL: 20081029 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081029 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091029 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |