JPH0341420B2 - - Google Patents
Info
- Publication number
- JPH0341420B2 JPH0341420B2 JP58213128A JP21312883A JPH0341420B2 JP H0341420 B2 JPH0341420 B2 JP H0341420B2 JP 58213128 A JP58213128 A JP 58213128A JP 21312883 A JP21312883 A JP 21312883A JP H0341420 B2 JPH0341420 B2 JP H0341420B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- strength
- hardening
- cement
- 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 - Lifetime
Links
- 239000004568 cement Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 12
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 9
- 150000007513 acids Chemical class 0.000 claims description 9
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 9
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 9
- 229910052806 inorganic carbonate Inorganic materials 0.000 claims description 8
- 229910052920 inorganic sulfate Inorganic materials 0.000 claims description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000015165 citric acid Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 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 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- KVBGVZZKJNLNJU-UHFFFAOYSA-M naphthalene-2-sulfonate Chemical compound C1=CC=CC2=CC(S(=O)(=O)[O-])=CC=C21 KVBGVZZKJNLNJU-UHFFFAOYSA-M 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229960003975 potassium Drugs 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
Description
本発明は、カルシウムアルミネートと無機硫酸
塩を急硬成分とし、他に3CaO・SiO2、2CaO・
SiO2、及び4CaO・Al2O3・Fe2O3等のセメント鉱
物を含有してなる急硬セメントに、アルミン酸
塩、無機炭酸塩、及びオキシカルボン酸類の規定
量を含有させることにより、注水後、少なくとも
20分以上の硬化時間を保持し、かつ、１時間の圧
縮強度が１：２モルタルで200kgf／cm2以上を発
現するような水和速度が極めて速い超速硬セメン
ト組成物に関する。
従来より種々の急硬セメント組成物が提案され
ているが、施工に必要な作業時間を20分以上とす
ると、いづれも、１時間後の圧縮強度は50〜100
Kgｆ／cm2程度となり、200Kgｆ／cm2程度の強度を
発現するには２時間以上が必要であつた。一方、
急硬セメントに対するユーザーの要求はますます
高度化し、例えば、市街地における道路工事や鉄
道関係の補修工事などのように、長時間にわたつ
て交通をしや断することができない所において
は、なるべく速い時間に高強度を発現するような
コンクリートが要求されている。
また、アルミン酸塩はセメントの急結剤として
広く知られているが、カルシウムアルミネートと
併用すると、どのような凝結調節剤を用いても施
工に必要な20分程度以上の作業時間を確保するこ
とができないので、20分程度以上の作業時間が必
要でない特殊用途、例えば、吹付工事などにしか
使用されることがなかつた。
本発明者等は、カルシウムアルミネートと無機
硫酸塩を急硬成分とする急硬セメントに、アルミ
ン酸塩を添加すると急結するが、注水後１〜２時
間の圧縮強度が著しく高められ、かつ、長期強度
の低下もない非常に優れた超速硬セメントが得ら
れる知見をもとにさらに鋭意研究をつみ重ねた結
果、アルミン酸ナトリウム、無機炭酸塩、及びオ
キシカルボン酸類の特定量を併用すると、各材料
の相剰効果の下に、施工に必要な20分以上の硬化
時間を保有し、かつ、１：２モルタルで１時間後
200Kgｆ／cm2を超える強度を発現する超速硬セメ
ント組成物が得られることを見い出し本発明を完
成した。
即ち、本発明は、カルシウムアルミネート対無
機硫酸塩の重量比が１対0.5〜３からなる急硬成
分を15〜35重量％含有してなる急硬セメントを主
成分とし、内割重量で、アルミン酸ナトリウム
0.2〜５％、無機炭酸塩0.2〜５％、及びオキシカ
ルボン酸類0.1〜２％を含有してなる超速硬セメ
ント組成物である。
以下、さらに詳しく本発明を説明する。
本発明に係るカルシウムアルミネートとは、単
独使用では、１〜５分程度の強度発現は大である
が、その後の強度の伸びが悪く、硬化時間を20分
程度まで延ばすことができず、無機硫酸塩と併用
することにより始めて効果を奏するものであり、
具体的には、12CaO・7Al2O3、3CaO・Al2O3、
CaO・Al2O3、11CaO・7Al2O3・CaX2（Ｘはハロ
ゲン）などの無定形又は結晶形が用いられる。
また、本発明に係る無機硫酸塩としては、各種
セツコウ類や硫酸ナトリウムなどが使用される。
そのうち、12CaO・7Al2O3又は12CaO・
7Al2O3とCaO・Al2O3の混合物と型無水セツコ
ウの組合わせが好ましく、最も高強度を発現す
る。
カルシウムアルミネート対無機硫酸塩の重量比
は１対0.5〜３であり、１〜1.5が好ましい。これ
以外の割合では、20分以上の作業時間を確保でき
ないか又は１時間で200Kgｆ／cm2以上の強度は得
られない。
カルシウムアルミネートと無機硫酸塩からなる
急硬成分の粉末度はブレーン値で3000cm2／ｇもあ
れば十分であり、4000〜8000cm2／ｇが好ましい。
急硬成分の使用量は、セメントに対し15〜35重
量部％であり、25〜30重量％が好ましい。これ以
外の使用量では、作業時間がとれないか又は高強
度が得られない。
アルミン酸ナトリウムは、本発明の目的を達成
するための重要成分であり、急硬成分を配合して
なる急硬セメントの水和反応を著しく高め、１時
間で200Kgｆ／cm2以上の強度を発現させるために
必要なものである。本発明の配合において、アル
ミン酸ナトリウムは、急結剤でありながら逆に硬
化時間を延ばすという特異な作用を示し、長期強
度を低下させることもない。
急硬セメントに対するアルミン酸ナトリウムの
配合量は、内割重量で0.2〜５％であり、0.5〜２
％が好ましい。0.2％未満では所定の強度に達せ
ず、また、５％をこえると凝結調節剤を用いても
作業時間を確保することができず、さらには長期
耐久性に問題がある。
本発明に係る無機炭酸塩としては、炭酸ナトリ
ウム、炭酸カリウム、炭酸水素ナトリウム、及び
炭酸水素カリウム等が挙げられる。
また、本発明に係るオキシカルボン酸類として
は、クエン酸、グルコン酸、酒石酸、及びリンゴ
酸又はそれらの酸のナトリウム、カリウム、及び
カルシウム等の水溶性塩が使用される。
本発明において、無機炭酸塩とオキシカルボン
酸類は、強度増進と凝結遅延の機能を有する。こ
れらは単独で使用しても若干硬化時間がのびるの
みであり、20分以上の作業時間を確保するには両
者を併用する必要がある。
また、使用量も重要であつて、急硬セメントに
対し内割重量で、無機炭酸塩は0.2〜５％であり、
0.5〜２％が好ましく、オキシカルボン酸類は0.1
〜２％であり、0.2〜１％が好ましい。これ以外
の使用量では、瞬結して施工に必要な作業時間が
とれないか又は高強度が得られない。
以上、本発明の超速硬セメント組成物を使用す
れば、20分以上の作業時間において、従来は３〜
６時間を要した強度をわずか１時間で発現させる
ことができ、その後の強度も順調に伸び、長期耐
久性に優れ、しかも、硬化体には斑点化現象を起
こさない等の効果を発揮するものである。
以下、実施例をあげてさらに具体的に説明す
る。
実施例 １
12CaO・7Al2O3とCaO・Al2O3を主成分とする
ブレーン値4800cm2／ｇのカルシウムアルミネート
粉末（CaO分44.5％）100重量部に型無水セツ
コウ（ブレーン値６，500cm2／ｇ）150重量部を配
合して得られた急硬成分を市販早強ポルトランド
セメントに内割で10〜40重量％配合し、さらに内
割重量でアルミン酸ナトリウムと炭酸カリウムを
それぞれ１％、クエン酸を0.4％添加して超速硬
セメント組成物を調合した。
このセメント組成物100重量部、川砂
（FM2.60）200重量部、水36重量部をモルミキサ
ーで練り混ぜ、20℃恒温室にて硬化時間
（ASTM C403−65Tに準じる）と１時間圧縮強
度を測定した。その結果を第１表に示す。
The present invention uses calcium aluminate and inorganic sulfate as rapid hardening components, and also contains 3CaO・SiO 2 , 2CaO・
By incorporating specified amounts of aluminate, inorganic carbonate, and oxycarboxylic acids into a rapidly hardening cement containing cement minerals such as SiO 2 and 4CaO・Al 2 O 3・Fe 2 O 3 , After watering, at least
The present invention relates to an ultra-rapid hardening cement composition that has an extremely fast hydration rate that maintains a hardening time of 20 minutes or more and exhibits a 1-hour compressive strength of 200 kgf/cm 2 or more in a 1:2 mortar. Various quick-hardening cement compositions have been proposed in the past, but if the work time required for construction is 20 minutes or more, the compressive strength after 1 hour is 50 to 100.
The strength was approximately Kgf/cm 2 , and more than 2 hours were required to develop a strength of approximately 200 Kgf/cm 2 . on the other hand,
User demands for rapid hardening cement are becoming more and more sophisticated, and for example, in areas where traffic cannot be interrupted for long periods of time, such as road construction in urban areas and railway-related repair work, it is necessary to use quick-hardening cement as quickly as possible. There is a need for concrete that develops high strength over time. In addition, aluminate is widely known as a quick setting agent for cement, but when used in combination with calcium aluminate, it will ensure the working time of about 20 minutes or more required for construction no matter what setting regulator is used. Therefore, it was only used for special purposes that did not require a working time of about 20 minutes or more, such as spraying work. The present inventors have discovered that when an aluminate is added to a quick-hardening cement containing calcium aluminate and an inorganic sulfate as quick-hardening components, it sets quickly, but the compressive strength is significantly increased for 1 to 2 hours after water injection, and Based on the knowledge that an extremely fast-hardening cement with no loss of long-term strength can be obtained, further intensive research has revealed that when specific amounts of sodium aluminate, inorganic carbonates, and oxycarboxylic acids are used in combination, Under the mutual effect of each material, it has a curing time of more than 20 minutes required for construction, and after 1 hour with 1:2 mortar
The present invention was completed by discovering that an ultra-fast hardening cement composition that exhibits a strength exceeding 200 kgf/cm 2 can be obtained. That is, the present invention has as its main component a rapid hardening cement containing 15 to 35% by weight of a rapid hardening component having a weight ratio of calcium aluminate to inorganic sulfate of 1:0.5 to 3; sodium aluminate
0.2-5%, inorganic carbonate 0.2-5%, and oxycarboxylic acids 0.1-2%. The present invention will be explained in more detail below. Calcium aluminate according to the present invention has a high strength development for about 1 to 5 minutes when used alone, but the strength does not increase after that, and the curing time cannot be extended to about 20 minutes. It only becomes effective when used in combination with sulfate,
Specifically, 12CaO・7Al 2 O 3 , 3CaO・Al 2 O 3 ,
Amorphous or crystalline forms such as CaO.Al 2 O 3 and 11CaO.7Al 2 O 3.CaX 2 (X is halogen) are used . Further, as the inorganic sulfate according to the present invention, various kinds of slags, sodium sulfate, etc. are used. Among them, 12CaO・7Al 2 O 3 or 12CaO・
A combination of a mixture of 7Al 2 O 3 and CaO.Al 2 O 3 and anhydrous molding is preferred and exhibits the highest strength. The weight ratio of calcium aluminate to inorganic sulfate is 1:0.5 to 3, preferably 1 to 1.5. If the ratio is other than this, it will not be possible to secure a working time of 20 minutes or more, or it will not be possible to obtain a strength of 200 kgf/cm 2 or more in 1 hour. It is sufficient that the rapid hardening component consisting of calcium aluminate and inorganic sulfate has a Blaine value of 3000 cm 2 /g, and preferably 4000 to 8000 cm 2 /g. The amount of the rapid hardening component used is 15 to 35 parts by weight, preferably 25 to 30 parts by weight, based on the cement. If the amount used is other than this, the working time will not be available or high strength will not be obtained. Sodium aluminate is an important component for achieving the purpose of the present invention, and it significantly enhances the hydration reaction of the quick-setting cement made with the quick-setting component, and develops a strength of 200 kgf/cm 2 or more in 1 hour. It is necessary to make this happen. In the formulation of the present invention, sodium aluminate exhibits a unique action of prolonging the curing time even though it is an accelerating agent, and does not reduce long-term strength. The amount of sodium aluminate added to the rapid hardening cement is 0.2 to 5% by weight, and 0.5 to 2% by weight.
% is preferred. If it is less than 0.2%, it will not reach the specified strength, and if it exceeds 5%, it will not be possible to secure enough working time even if a setting regulator is used, and furthermore, there will be problems with long-term durability. Examples of the inorganic carbonate according to the present invention include sodium carbonate, potassium carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate. Further, as the oxycarboxylic acids according to the present invention, citric acid, gluconic acid, tartaric acid, malic acid, or water-soluble salts of these acids such as sodium, potassium, and calcium are used. In the present invention, the inorganic carbonates and oxycarboxylic acids have the functions of increasing strength and retarding setting. Even if these are used alone, the curing time will only be slightly longer, so it is necessary to use both in combination to ensure a working time of 20 minutes or more. In addition, the amount used is also important; inorganic carbonate is 0.2 to 5% by weight relative to rapid hardening cement.
0.5 to 2% is preferable, and oxycarboxylic acids are 0.1%.
-2%, preferably 0.2-1%. If the amount used is other than this, it will cause instant bonding and the work time required for construction will not be taken or high strength will not be obtained. As mentioned above, if the ultra-fast hardening cement composition of the present invention is used, in a working time of 20 minutes or more, the conventional
The strength that required 6 hours can be developed in just 1 hour, the strength increases steadily after that, and it has excellent long-term durability, and also exhibits effects such as not causing spotting on the cured product. It is. Hereinafter, the present invention will be described in more detail with reference to Examples. Example 1 100 parts by weight of calcium aluminate powder (CaO content 44.5%) containing 12CaO・7Al 2 O 3 and CaO・Al 2 O 3 as main components and having a Blaine value of 4800 cm 2 /g was added with mold anhydrous powder (Brain value 6, 500cm 2 /g) 150 parts by weight of the quick-hardening component was blended into commercially available early-strength Portland cement in an amount of 10 to 40% by weight, and further added 1% each of sodium aluminate and potassium carbonate. %, and an ultra-fast hardening cement composition was prepared by adding 0.4% citric acid. 100 parts by weight of this cement composition, 200 parts by weight of river sand (FM2.60), and 36 parts by weight of water were mixed in a molar mixer, and the hardening time (according to ASTM C403-65T) and 1 hour compressive strength were determined in a constant temperature room at 20°C. was measured. The results are shown in Table 1.
【表】
実施例 ２
急硬成分の配合量を25重量％とし、急硬成分の
カルシウムアルミネートと型無水セツコウの割
合を変化させたこと以外は実施例１と同様に行つ
た。結果を第２表に示す。[Table] Example 2 The same procedure as in Example 1 was carried out, except that the blending amount of the quick-hardening component was 25% by weight, and the ratio of the quick-hardening component, calcium aluminate, and mold anhydride was varied. The results are shown in Table 2.
【表】
カルシウムアルミネートとセツコウの比
は重量比
実施例 ３
急硬成分の配合量を25重量％とし、アルミン酸
ソーダの内割添加量を変化させたこと以外は実施
例１と同様に行つた。結果を第３表に示す。[Table] Ratio of calcium aluminate and sessile is weight ratio Example 3 The same procedure as Example 1 was carried out except that the amount of the quick hardening component was 25% by weight and the amount of sodium aluminate added was changed. Ivy. The results are shown in Table 3.
【表】
実施例 ４
急硬成分の配合量を25重量％とし、無機炭酸塩
の種類と添加量（内割）を変化させたこと以外は
実施例１と同様に行つた。結果を第４表に示す。[Table] Example 4 The same procedure as in Example 1 was carried out, except that the amount of the rapid hardening component was 25% by weight, and the type and amount (internal division) of the inorganic carbonate were changed. The results are shown in Table 4.
【表】
実施例 ５
急硬成分の配合量を25重量％とし、オキシカル
ボン酸類の種類と添加量（内割）を変化させたこ
と以外は実施例１と同様に行つた。結果を第５表
に示す。[Table] Example 5 The same procedure as in Example 1 was carried out, except that the amount of the rapid hardening component was 25% by weight, and the type and amount (internal division) of the oxycarboxylic acids were varied. The results are shown in Table 5.
【表】
実施例 ６
急硬成分の配合量を25重量％とした実施例１の
超速硬セメント組成物に対し、外割で、β−ナフ
タレンスルホン酸塩ホルマリン縮合物塩を主成分
とする市販の高性能減水剤商品名「マイテイ−
100」を固形分で１％添加し、セメント量400Kg／
m3、水セメント比32％、細骨材率34％、スランプ
８cmの配合でコンクリートを練り混ぜ、硬化時間
と圧縮強度（φ10×20cm）を測定した。比較例と
して、前記配合からアルミン酸ナトリウムを抜い
て試験した。結果第６表に示す。[Table] Example 6 Compared to the ultra-fast hardening cement composition of Example 1 in which the rapid hardening component was 25% by weight, commercially available cement composition containing β-naphthalene sulfonate formalin condensate salt as the main component High performance water reducer product name “Mighty”
100" was added at 1% solid content, cement amount 400Kg/
m 3 , a water-cement ratio of 32%, a fine aggregate ratio of 34%, and a slump of 8 cm. Concrete was mixed and the hardening time and compressive strength (φ10×20 cm) were measured. As a comparative example, sodium aluminate was omitted from the formulation and tested. The results are shown in Table 6.
Claims (1)
比が１対0.5〜３からなる急硬成分を15〜35重量
％含有してなる急硬セメントを主成分とし、内割
重量で、アルミン酸ナトリウム0.2〜５％、無機
炭酸塩0.2〜５％、及びオキシカルボン酸類0.1〜
２％を含有してなる超速硬セメント組成物。1 The main component is a rapid hardening cement containing 15 to 35% by weight of a rapid hardening component with a weight ratio of calcium aluminate to inorganic sulfate of 1 to 0.5 to 3, and sodium aluminate 0.2 to 3 by weight. 5%, inorganic carbonates 0.2~5%, and oxycarboxylic acids 0.1~
An ultra-fast hardening cement composition containing 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21312883A JPS60108352A (en) | 1983-11-12 | 1983-11-12 | Super quick settable cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21312883A JPS60108352A (en) | 1983-11-12 | 1983-11-12 | Super quick settable cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60108352A JPS60108352A (en) | 1985-06-13 |
| JPH0341420B2 true JPH0341420B2 (en) | 1991-06-24 |
Family
ID=16634037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21312883A Granted JPS60108352A (en) | 1983-11-12 | 1983-11-12 | Super quick settable cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60108352A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008274580A (en) * | 2007-04-26 | 2008-11-13 | Mitsubishi Materials Corp | Filling material for pavement body, and paving method using the same |
| JP4626541B2 (en) * | 2006-03-02 | 2011-02-09 | 三菱マテリアル株式会社 | Ultra-fast hardening grout composition |
| WO2015098353A1 (en) | 2013-12-26 | 2015-07-02 | オリンパス株式会社 | Method for measuring distance using endoscope, and endoscope system |
| US10800701B2 (en) | 2016-03-31 | 2020-10-13 | Mitsubishi Materials Corporation | Rapid-hardening cement composition |
| US10829416B2 (en) | 2016-03-31 | 2020-11-10 | Mitsubishi Materials Corporation | Rapid-hardening admixture and method for producing same |
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|---|---|---|---|---|
| US5629048A (en) * | 1994-09-20 | 1997-05-13 | Sandoz Ltd. | Rapid setting cementitious compositions and method |
| US5591259A (en) * | 1994-09-20 | 1997-01-07 | Sandoz Ltd. | Rapid setting cementitious compositions and method |
| JP4497776B2 (en) * | 2001-11-29 | 2010-07-07 | 電気化学工業株式会社 | Cement admixture, cement composition, and mortar or concrete using the same |
| JP2007137744A (en) * | 2005-11-22 | 2007-06-07 | Taiheiyo Material Kk | Quick hardening material and grout |
| JP2007137745A (en) * | 2005-11-22 | 2007-06-07 | Taiheiyo Material Kk | Quick hardening material and high-penetrating grout |
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| JP4860279B2 (en) * | 2006-01-27 | 2012-01-25 | 電気化学工業株式会社 | Ultra-fast-hardening / high-fluidity cement composition and mortar or concrete using the same |
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| JP2007297250A (en) * | 2006-05-02 | 2007-11-15 | Denki Kagaku Kogyo Kk | Ultrarapid hardening cement composition, ultrarapid hardening mortar composition and ultrarapid hardening grout mortar |
| CN101918474B (en) | 2007-11-15 | 2013-11-13 | 蒙大拿大学 | Hydroxypolyamide gel forming agents |
| WO2014085262A1 (en) | 2012-11-28 | 2014-06-05 | Rivertop Renewables | Corrosion inhibiting, freezing point lowering compositions |
| BR112015022284A2 (en) | 2013-03-13 | 2017-07-18 | Rivertop Renewables Inc | improved nitric acid oxidation processes |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134735A (en) * | 1978-04-12 | 1979-10-19 | Denki Kagaku Kogyo Kk | Quick hardener for dry spray process |
| JPS56145146A (en) * | 1980-04-09 | 1981-11-11 | Denki Kagaku Kogyo Kk | Manufacture of glass fiber reinforced cement board |
-
1983
- 1983-11-12 JP JP21312883A patent/JPS60108352A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134735A (en) * | 1978-04-12 | 1979-10-19 | Denki Kagaku Kogyo Kk | Quick hardener for dry spray process |
| JPS56145146A (en) * | 1980-04-09 | 1981-11-11 | Denki Kagaku Kogyo Kk | Manufacture of glass fiber reinforced cement board |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4626541B2 (en) * | 2006-03-02 | 2011-02-09 | 三菱マテリアル株式会社 | Ultra-fast hardening grout composition |
| JP2008274580A (en) * | 2007-04-26 | 2008-11-13 | Mitsubishi Materials Corp | Filling material for pavement body, and paving method using the same |
| WO2015098353A1 (en) | 2013-12-26 | 2015-07-02 | オリンパス株式会社 | Method for measuring distance using endoscope, and endoscope system |
| US10800701B2 (en) | 2016-03-31 | 2020-10-13 | Mitsubishi Materials Corporation | Rapid-hardening cement composition |
| US10829416B2 (en) | 2016-03-31 | 2020-11-10 | Mitsubishi Materials Corporation | Rapid-hardening admixture and method for producing same |
| US11117833B2 (en) | 2016-03-31 | 2021-09-14 | Mitsubishi Materials Corporation | Rapid-hardening mortar composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60108352A (en) | 1985-06-13 |
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