JP2556538B2 - Hydraulic composition - Google Patents
Hydraulic compositionInfo
- Publication number
- JP2556538B2 JP2556538B2 JP62324146A JP32414687A JP2556538B2 JP 2556538 B2 JP2556538 B2 JP 2556538B2 JP 62324146 A JP62324146 A JP 62324146A JP 32414687 A JP32414687 A JP 32414687A JP 2556538 B2 JP2556538 B2 JP 2556538B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- hydraulic composition
- composition
- calcium aluminate
- 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 - Fee Related
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は土木・建築用に使用される水硬性組成物、詳
しくはカルシウムアルミネート、高炉水砕スラグ及び炭
酸カルシウムを主成分とする水硬性組成物に関するもの
で、作業性が良好で短期・長期材令で優れた強度発現と
耐ひびわれ性を有するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a hydraulic composition used for civil engineering and construction, specifically calcium aluminate, granulated blast furnace slag, and hydraulic composition containing calcium carbonate as a main component. The composition relates to a composition having good workability, excellent strength development in a short-term and long-term age, and crack resistance.
＜従来の技術とその問題点＞ 従来カルシウムアルミネートを主成分とするセメント
としてはアルミナセメントが知られているが、長期強度
の低下、ひび割れの発生等の物性上の問題点やコスト高
により土木・建築用にはほとんど使用されていない。近
年、粒状高炉スラグに12CaO・7Al2O3又は11CaO・7Al2O3
・CaX2（Ｘはハロゲン原子）を組み合せたセメント組成
物が提案されており、（特開昭60−180945号公報）コス
トダウンが図られているが長期強度の低下が見られ、物
性面で充分とは言えないものである。<Conventional technology and its problems> Alumina cement is conventionally known as a cement containing calcium aluminate as a main component, but due to problems in physical properties such as deterioration of long-term strength and occurrence of cracks and high cost, civil engineering -It is rarely used for construction. Recently, 12CaO · 7Al 2 O 3 or 11CaO · 7Al 2 O 3 in the granulated blast furnace slag
A cement composition in which CaX 2 (X is a halogen atom) is combined has been proposed. (Japanese Patent Application Laid-Open No. 60-180945) Cost reduction is attempted, but long-term strength deterioration is observed and physical properties are improved. It is not enough.
カルシウムアルミネートを主成分とするセメントの欠
点は、アルミナセメントに見られるように水和物の転移
反応により容積変化が生じ、機械的強度低下や寸法収縮
が起きることである。具体的にはアルミナセメントの水
和初期にはCaO・Al2O3・10H2Oや2CaO・Al2O3・8H2Oが生
成し、材令と共に3CaO・Al2O3・6H2Oに転化し水和物の
密度差により空隙が多くなることに起因する。The disadvantage of the cement containing calcium aluminate as a main component is that the volume change occurs due to the transition reaction of the hydrate as seen in the alumina cement, resulting in a decrease in mechanical strength and dimensional shrinkage. Specifically, CaO ・ Al 2 O 3・ 10H 2 O and 2CaO ・ Al 2 O 3・ 8H 2 O are formed in the early stage of hydration of alumina cement, and 3CaO ・ Al 2 O 3・ 6H 2 O It is due to the increase in voids due to the difference in the density of hydrates.
本発明はこのような問題点と解決する水硬性組成物に
関するものである。The present invention relates to a hydraulic composition that solves these problems.
＜問題点を解決するための手段＞ 即ち、本発明はカルシウムアルミネート100重量部
と、高炉水砕スラグ及び炭酸カルシウム５〜900重量部
を主成分とする水硬性組成物である。<Means for Solving Problems> That is, the present invention is a hydraulic composition containing 100 parts by weight of calcium aluminate, granulated blast furnace slag and 5-900 parts by weight of calcium carbonate as main components.
カルシウムアルミネートとしては、CaOをＣ、Al2O3を
Ａとすると、C3A、C12A7、CA、CA2及びCA6等と示される
鉱物が知られている。又、これら結晶性鉱物ではなく、
無定形化されたカルシウムアルミネートの利用も行われ
ており、CaOとAl2O3の組成比を連続的にとることができ
る。本発明ではCaOとAl2O3の組成比が重要であり、CaO
含有量が30〜50重量％のCA、C12A7を主成分とするカル
シウムアルミネートの使用が好ましい。As calcium aluminate, minerals known as C 3 A, C 12 A 7 , CA, CA 2 and CA 6 are known, where CaO is C and Al 2 O 3 is A. Also, not these crystalline minerals,
Amorphous calcium aluminate is also used, and the composition ratio of CaO and Al 2 O 3 can be continuously taken. In the present invention, the composition ratio of CaO and Al 2 O 3 is important.
It is preferable to use calcium aluminate containing 30 to 50% by weight of CA and C 12 A 7 as main components.
CaO含有量が50重量％を越えるとC3A組成に近づき、初
期の水硬性は高まるが長期材令での強度発現等安定性に
問題が残る。CaO含有量が30重量％未満であると水硬性
が低く強度発現が充分でなくなる。When the CaO content exceeds 50% by weight, the composition approaches the C 3 A composition and the initial hydraulic hardness increases, but stability such as strength development in the long-term age remains a problem. If the CaO content is less than 30% by weight, hydraulic properties are low and strength development becomes insufficient.
高炉水砕スラグは塩基度 ガラス化率50％以上、粉末度ブレーン比表面積で2,000c
m2/g以上のものが好ましい。Granulated blast furnace slag is basic Vitrification rate of 50% or more, fineness of Blaine specific surface area of 2,000c
It is preferably m 2 / g or more.
炭酸カルシウムの純度は高い方が好ましく、90％以上
は必要であり、粉末度はブレーン比表面積で1,000cm2/g
以上が好ましい。Higher purity of calcium carbonate is preferable, 90% or more is required, and the fineness of powder is Blaine specific surface area of 1,000 cm 2 / g.
The above is preferable.
高炉水砕スラグ及び炭酸カルシウムの使用量はカルシ
ウムアルミネート100重量部に対して、５〜900重量部で
ある。５重量部未満ではカルシウムアルミネートの長期
材令での水和物の転移が生じ、900重量部を越えると強
度発現効果が低くなる。好ましくはカルシウムアルミネ
ート100重量部に対し10〜100重量部である。The amount of granulated blast furnace slag and calcium carbonate used is 5 to 900 parts by weight based on 100 parts by weight of calcium aluminate. If it is less than 5 parts by weight, the transition of hydrate of calcium aluminate in the long-term age occurs, and if it exceeds 900 parts by weight, the effect of strength development becomes low. It is preferably 10 to 100 parts by weight with respect to 100 parts by weight of calcium aluminate.
高炉水砕スラグと炭酸カルシウムの割合は重量比で1:
0.1〜0.1:1が好ましい。この範囲外であると長期材令で
の強度低下防止がむずかしい。The weight ratio of granulated blast furnace slag and calcium carbonate is 1:
0.1-0.1: 1 is preferred. If it is out of this range, it is difficult to prevent the strength from being deteriorated in the long-term age.
またカルシウムアルミネートの粉末度は強度発現の点
からブレーン比表面積で2,000cm2/g以上、好ましくは3,
000cm2/g以上である。Further, the fineness of calcium aluminate is 2,000 cm 2 / g or more in terms of Blaine specific surface area from the viewpoint of strength development, preferably 3,
It is 000 cm 2 / g or more.
本発明においてはカルシウムアルミネートと高炉水砕
スラグ及び炭酸カルシウムからなる水硬性組成物に対し
CaO系、アウイン（C3A3C）系及びMgO系の膨張材や無
水石膏、半水石膏及び二水石膏などの石膏類を収縮低減
材として用いることができる。これら収縮低減材の添加
量は水硬性組成物100重量部に対し20重量部以下が好ま
しく、５〜15重量部が更に好ましい。In the present invention, for a hydraulic composition comprising calcium aluminate, granulated blast furnace slag and calcium carbonate
CaO-based, hain (C 3 A 3 C) -based and MgO-based expansive materials and gypsums such as anhydrous gypsum, hemihydrate gypsum and dihydrate gypsum can be used as shrinkage reducing materials. The addition amount of these shrinkage reducing agents is preferably 20 parts by weight or less, more preferably 5 to 15 parts by weight, based on 100 parts by weight of the hydraulic composition.
土木・建築分野で使用される水硬性組成物では初期の
作業性が重要である。一般には、減水剤又は流動化剤と
いつたものが使用される。例えば、リグニンスルホン酸
塩系、ナフタレンスルホン酸塩ホルマリン縮合物系、メ
ラミンスルホン酸塩ホルマリン縮合物系、オキシカルボ
ン酸塩系及びポリカルボン酸系などがあるが、本発明に
おいてはオキシカルボン酸又はその塩が有効である。添
加量は水硬性組成物100重量部に対し0.01〜５重量部で
ある。0.01重量部未満であると効果が充分でなく、５重
量部を越えると硬化不良等の問題が生じる。Initial workability is important for hydraulic compositions used in the field of civil engineering and construction. Generally, water reducing agents or superplasticizers are used. For example, there are lignin sulfonate, naphthalene sulfonate formalin condensate system, melamine sulfonate formalin condensate system, oxycarboxylic acid salt type and polycarboxylic acid type, but in the present invention, oxycarboxylic acid or its Salt is effective. The addition amount is 0.01 to 5 parts by weight with respect to 100 parts by weight of the hydraulic composition. If it is less than 0.01 part by weight, the effect is not sufficient, and if it exceeds 5 parts by weight, problems such as curing failure occur.
本発明の水硬性組成物は一般に普通ポルトランドセメ
ント、膨張セメント、超速硬セメント等の用途に適用さ
れるが、低アルカリセメントとして上・下水道管のライ
ニングやガラス繊維強化製品等に使用することができ
る。The hydraulic composition of the present invention is generally applied to applications such as ordinary Portland cement, expansive cement, and ultra-rapid cement, but can be used as a low-alkali cement for linings of water and sewer pipes and glass fiber reinforced products. .
＜実施例＞ 以下、実施例で本発明をさらに説明する。<Examples> Hereinafter, the present invention will be further described with reference to Examples.
実施例１ 表−１に示す水硬性組成物100重量部に対し細骨材200
重量部及び水50重量部を添加し、モルタルミキサーで混
練後、４×４×16cm型枠に流し込み成形した。この硬化
体を所定材令で圧縮強度測定を行つた。養生は20℃、80
％R.H.で行つた。Example 1 Fine aggregate 200 per 100 parts by weight of the hydraulic composition shown in Table 1
Parts by weight and 50 parts by weight of water were added, and the mixture was kneaded with a mortar mixer and cast into a 4 × 4 × 16 cm mold to mold. The compression strength of this cured product was measured according to a prescribed age. Curing is 20 ℃, 80
I went with% RH.
＜使用材料＞ （１）カルシウムアルミネート……アルミナセメント２
号：電気化学工業製。<Materials used> (1) Calcium aluminate ... Alumina cement 2
Issue: Made by Denki Kagaku Kogyo.
CaO含有量−35.0重量％、粉末度−31,00cm2/g 粉末度 4,200cm2/g、ガラス化率−95％ （３）炭酸カルシウム……関東化学（株）試薬一級 実施例２ 実験No.6の配合の水硬性組成物100重量部に対し表−
２に示す収縮低減材を添加したこと以外は実施例１と同
様の手順でモルタルを作製し養生をした。CaO content-35.0% by weight, fineness-31,00 cm 2 / g Fineness 4,200 cm 2 / g, vitrification rate −95% (3) Calcium carbonate …… Kanto Chemical Co., Ltd. first-grade reagent Example 2 A table was prepared for 100 parts by weight of the hydraulic composition having the composition of Experiment No. 6.
Mortar was prepared and cured by the same procedure as in Example 1 except that the shrinkage reducing material shown in 2 was added.
＜使用材料＞ （１）CaO系膨張材……小野田セメント、商品名「エク
スパン」 （２）アウイン系膨張材……電気化学、商品名「デンカ
CSA20＃」 （３）無水石膏……フツ酸発生石膏、ブレーン比表面積
6,000cm2/g 実施例３ 実験No.6の組成（100重量部）に対し表−３に示す添
加剤を作業性改善のため添加したこと以外は、実施例１
と同様の手順でモルタルを作製し養生を行つた。<Materials used> (1) CaO-based expansive material …… Onoda Cement, trade name “Expan” (2) Auine-based expansive material …… electrochemical, trade name “Denka”
CSA20 # ”(3) Anhydrous gypsum …… Fluic acid generating gypsum, Blaine specific surface area
6,000 cm 2 / g Example 3 Example 1 except that the additives shown in Table 3 were added to the composition of Experiment No. 6 (100 parts by weight) to improve workability.
Mortar was prepared and cured by the same procedure.
＜使用材料＞ クエン酸Na……試薬一級 流動化剤としてクエン酸Naを添加すると初期のフロー
値の向上、作業性の改善と長期材令で良好な強度の伸び
が期待できることが示された。<Materials used> Na citrate ... First-class reagent It was shown that the addition of Na citrate as a superplasticizer can improve the initial flow value, workability and long-term good strength elongation.
＜発明の効果＞ 本発明の水硬性組成物は初期強度発現に優れ、長期材
令においても強度低下が無く、ひび割れの少ないもので
ある。<Effects of the Invention> The hydraulic composition of the present invention is excellent in initial strength development, has no deterioration in strength even in long-term age, and has few cracks.
Claims (1)
炉水砕スラグ及び炭酸カルシウム５〜900重量部を主成
分とする水硬性組成物。1. A hydraulic composition comprising 100 parts by weight of calcium aluminate, granulated blast furnace slag and 5-900 parts by weight of calcium carbonate as main components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62324146A JP2556538B2 (en) | 1987-12-23 | 1987-12-23 | Hydraulic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62324146A JP2556538B2 (en) | 1987-12-23 | 1987-12-23 | Hydraulic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01167267A JPH01167267A (en) | 1989-06-30 |
| JP2556538B2 true JP2556538B2 (en) | 1996-11-20 |
Family
ID=18162645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62324146A Expired - Fee Related JP2556538B2 (en) | 1987-12-23 | 1987-12-23 | Hydraulic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2556538B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3993850B2 (en) * | 2003-11-04 | 2007-10-17 | 電気化学工業株式会社 | Cement composition |
| JP4708264B2 (en) * | 2006-06-06 | 2011-06-22 | よこはまティーエルオー株式会社 | Cement composition |
| JP5539673B2 (en) * | 2009-06-09 | 2014-07-02 | 株式会社竹中工務店 | Concrete composition using blast furnace slag composition |
| JP7447264B2 (en) * | 2020-06-18 | 2024-03-11 | 大成建設株式会社 | Hydraulic composition, hydraulic composition mixed material and cured product |
-
1987
- 1987-12-23 JP JP62324146A patent/JP2556538B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01167267A (en) | 1989-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |