JPH01111761A - Cement suspension composition - Google Patents
Cement suspension compositionInfo
- Publication number
- JPH01111761A JPH01111761A JP26995787A JP26995787A JPH01111761A JP H01111761 A JPH01111761 A JP H01111761A JP 26995787 A JP26995787 A JP 26995787A JP 26995787 A JP26995787 A JP 26995787A JP H01111761 A JPH01111761 A JP H01111761A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- alkali metal
- salt
- carboxylic acid
- suspension
- 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
- 239000004568 cement Substances 0.000 title claims abstract description 71
- 239000000725 suspension Substances 0.000 title claims abstract description 34
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- -1 alkali metal aluminate Chemical class 0.000 claims abstract description 21
- 150000003839 salts Chemical class 0.000 claims abstract description 18
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 17
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims abstract description 12
- 150000008041 alkali metal carbonates Chemical class 0.000 claims abstract description 12
- 239000010440 gypsum Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 12
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims abstract description 9
- 239000001509 sodium citrate Substances 0.000 claims abstract description 8
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims abstract description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 7
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 4
- 239000001508 potassium citrate Substances 0.000 claims description 3
- 229960002635 potassium citrate Drugs 0.000 claims description 3
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 3
- 235000011082 potassium citrates Nutrition 0.000 claims description 3
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 claims 1
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000176 sodium gluconate Substances 0.000 abstract description 5
- 235000012207 sodium gluconate Nutrition 0.000 abstract description 5
- 229940005574 sodium gluconate Drugs 0.000 abstract description 5
- 239000011398 Portland cement Substances 0.000 abstract description 3
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 238000011161 development Methods 0.000 description 13
- 230000029058 respiratory gaseous exchange Effects 0.000 description 11
- 150000001734 carboxylic acid salts Chemical class 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000004684 trihydrates Chemical class 0.000 description 3
- 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 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000001630 malic acid Substances 0.000 description 2
- 235000011090 malic acid Nutrition 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229960003975 potassium Drugs 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002562 thickening agent Substances 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
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- PXRKCOCTEMYUEG-UHFFFAOYSA-N 5-aminoisoindole-1,3-dione Chemical compound NC1=CC=C2C(=O)NC(=O)C2=C1 PXRKCOCTEMYUEG-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 229940050410 gluconate Drugs 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229960001078 lithium Drugs 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- C04B28/14—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 calcium sulfate 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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は地盤改良剤として地盤に注入されたり基礎構造
物材料として型枠中に打ち込まれたりするセメント懸濁
液組成物に間するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to cement suspension compositions that are injected into the ground as a soil conditioner or cast into formwork as a material for substructures. be.
［発明の背景〕
従来、このｆＩの地盤改良剤や基礎構造物材料としては
セメントを水に懸濁させたセメント懸濁）夜が用いられ
ている。しかし該セメント！？３． ｆＭ １（ｆｔは
凝結硬化速度が遅く、凝結硬化するまでに数時間を要す
るために凝結硬化前にセメント懸濁液中のセメントが沈
降分離してしまう。そのためにセメント懸濁液が不均一
になり注入されたセメント懸濁液の一部が凝結硬化する
だけで全体的に完全な凝結硬化が期待できない。そして
凝結硬化前にセメント懸濁液の一部が対象地盤から逸出
し、材料損失が大きくなるうえに環境が汚染されるとい
う問題も生ずる。[Background of the Invention] Conventionally, a cement suspension, in which cement is suspended in water, has been used as a ground improvement agent and a material for foundation structures. But the cement! ? 3. fM 1 (ft has a slow setting and hardening speed and takes several hours to set and harden, so the cement in the cement suspension settles and separates before setting and hardening. As a result, the cement suspension becomes non-uniform. However, complete setting and hardening cannot be expected as the injected cement suspension only partially sets and hardens.Also, some of the cement suspension escapes from the target ground before setting and hardening, resulting in material loss. In addition to growing in size, there is also the problem of environmental pollution.
［従来の技術］
このようなセメン） 悲’ｔＲ液の問題点を解消するた
めに従来、種々な改良組成が提供されている。[Prior Art] Various improved compositions have been proposed in the past in order to solve the problems of such cement liquids.
このような改良組成としてはセメント懸濁液に水ガラス
を併用するもの、セメントとして超早強セメントや急結
セメントを用いるもの、セメントの全部又は一部をアル
ミナセメントとし更に所望なれば炭酸カリウム、石膏、
石灰等を添加するもの、アルミン酸アルカリ金属塩をセ
メント懸濁液に添加するもの等がある。Such improved compositions include those that use water glass in combination with the cement suspension, those that use ultra-early strength cement or quick-set cement as the cement, those that use alumina cement for all or part of the cement, and if desired, potassium carbonate. plaster,
There are those that add lime, etc., and those that add alkali metal aluminate to the cement suspension.
［発明が解決しようとする問題点］
しかしながら水ガラスを併用すると凝結硬化物の強度お
よび耐久性が低下し、特に基礎構造物を才料として不適
となり、超早強セメントや急結セメントを用いると凝結
硬化時間が早くなり過ぎて組成物調整中あるいは注入途
中で硬化してしまうおそれがあり、アルミナセメントを
用い所望なれば炭酸カリウム等の添加剤を添加すると凝
結硬化時間は適度に短縮され得るが水／セメント比が非
常に大きく、水和生成物の転移等による強度低下あるい
は強度発ＪＲ不良が著しく、アルミン酸アルカリ金属塩
を添加するものはいまだ凝結硬化時間の短縮が不十分で
ある。[Problems to be solved by the invention] However, when water glass is used in combination, the strength and durability of the hardened product decreases, making it particularly unsuitable for use in foundation structures. There is a risk that the setting and hardening time will become too fast and the composition will harden during the preparation of the composition or during the injection process.However, if an alumina cement is used and if desired, an additive such as potassium carbonate is added, the setting and hardening time can be moderately shortened. The water/cement ratio is very high, and the strength decrease or JR failure due to the transfer of hydration products is significant, and the setting and hardening time of those to which alkali metal aluminates are added is still insufficient.
［問題点を解決する為の手段］
先に本発明者らは上記１に来の問題点を解決する゛手段
として、セメントを水に懸濁させたセメント懸濁？αと
アルミン酸アルカリ金属塩と、塩基性炭酸マグネシウム
および／またはアルカリ土類金属水酸化物とからなるセ
メント懸濁液組成物等を提供した（特願昭６１−３０４
４８８、特願昭６２−２０８５０５）、先に提案した方
法はセメントのゲルタイムを数秒から数分に設定するこ
とができ、地盤や型枠に注入する際に例えば７字管、２
重管等を用い注入直前にＡ）αとＢ液とを混合する二）
α型でもフて施工する。一方、主に作業性および経済的
な理由から一液型で注入可能な注入剤すなわちゲルタイ
ムが数十分程度に設定できる注入剤が必要とされる場合
がある。従来、かかる場合はセメントの急結剤と遅延剤
を組み合わせ、場合によってはセメントが凝結硬化する
前に沈降分離しないようベントナイト、ヒドロキシメチ
ルセルロース、ポリオキシエチレンなどの増粘剤が用い
られろ。し・かじながらセメントにこれらの増粘剤を混
入させると強度低下を引き起こすばかりでなく管軸送困
難な程増帖するので作業性が低下し増−帖を抑えると１
リ−ジング水が多くなるという欠点があった。また、単
にセメントの急結剤と遅延剤を組み合わせただけでは強
度低下することなくゲルタイムを数十分に設定したりブ
リージング水を少なくすることが困難てあフだ。[Means for Solving the Problems] First, the present inventors have developed a cement suspension system in which cement is suspended in water as a means for solving the problems mentioned in 1 above. The present invention provides a cement suspension composition, etc. consisting of α, an alkali metal aluminate, basic magnesium carbonate and/or an alkaline earth metal hydroxide (Patent Application No. 304/1986).
488, Japanese Patent Application No. 62-208505), the previously proposed method can set the gel time of cement from several seconds to several minutes, and when injecting into the ground or formwork, for example, a 7-shaped pipe, 2
A) Mix α and B solution immediately before injection using a heavy pipe etc. 2)
Even the α type can be constructed with a lid. On the other hand, there are cases where a one-component injection agent, that is, an injection agent whose gel time can be set to about several tens of minutes, is required mainly for reasons of workability and economy. Conventionally, in such cases, a cement quick setting agent and a retarder have been combined, and in some cases thickeners such as bentonite, hydroxymethyl cellulose, polyoxyethylene, etc. have been used to prevent sedimentation and separation before the cement has set and hardened. However, if these thickeners are mixed into cement, it not only causes a decrease in strength, but also increases the thickness to the extent that it is difficult to feed the tube, reducing workability.
There was a drawback that a large amount of leasing water was produced. In addition, it is difficult to set the gel time to several tens of minutes or reduce the amount of breathing water without reducing strength by simply combining a cement quick-setting agent and a retarder.
我々はかかる問題を解決すべく鋭意研究した結果本発明
に到達したものでこれは、セメントと（Ａ）有機カルボ
ン酸く塩）および石膏を水に溶解または懸濁させた１夜
にアルミン酸アルカリ金属塩と炭酸アルカリ金属塩およ
び／または（Ｂ）有機カルボン酸く塩）を溶解または懸
濁させて成ることを特徴とするセメント懸ｉｌｉ液組成
物を提供するものである。As a result of intensive research to solve this problem, we have arrived at the present invention. This is a process in which cement, (A) organic carboxylic acid salt), and gypsum are dissolved or suspended in water and an aluminate alkali is dissolved or suspended in water overnight. The present invention provides a cement suspension liquid composition characterized by dissolving or suspending a metal salt, an alkali metal carbonate, and/or (B) an organic carboxylic acid salt.
本発明に用いられろセメントとはポルトランドセメント
が主体であり、該ポルトランドには高炉セメント、シリ
カセメント、フライアッシュセメント等が混合されても
よい。The cement used in the present invention is mainly Portland cement, and blast furnace cement, silica cement, fly ash cement, etc. may be mixed with the Portland cement.
本発明に用いられるアルミン酸アルカリ金属塩とはアル
ミン酸のリチウム、カリウム、ナトリウム等のアルカリ
金属塩であり、通常入手容易な点からカリウム塩または
ナトリウム塩が用いられ、Ｍをアルカリ金属塩とすると
Ｍ２０／ＡＩ＝０３が０．８〜１．４程度である。通常
セメントに対して１〜２０重量％使用される。The alkali metal salt of aluminate used in the present invention is an alkali metal salt of aluminate such as lithium, potassium, sodium, etc. Potassium salt or sodium salt is usually used because it is easily available, and when M is an alkali metal salt, M20/AI=03 is about 0.8 to 1.4. It is usually used in an amount of 1 to 20% by weight based on cement.
本発明に用いられろ炭酸アルカリ金属塩とは炭酸のリチ
ウム、カリウム、ナトリウム等のアルカリ金属塩であり
、通常入手容易な点からカリウム塩またはナトリウム塩
が用いられ、セメントに対して１〜２０重量％使用され
る。The alkali metal carbonate used in the present invention is an alkali metal salt such as lithium, potassium, or sodium carbonate, and potassium salt or sodium salt is usually used because it is easily available. %used.
本発明に用いられる（Ａ）有機カルボン酸く塩）とはク
エン酸、クエン酸ナトリウム、クエン酸カリウムであり
これらの水和物であってもよい。通常セメントに刻して
０．１〜２重量％添加される。The (A) organic carboxylic acid salts used in the present invention are citric acid, sodium citrate, and potassium citrate, and may also be hydrates of these. It is usually chopped and added to cement in an amount of 0.1 to 2% by weight.
本発明に用いられる（Ｂ）有機カルボン酸く塩）とはグ
ルコン酸すトリウム、クエン酸、クエン酸ナトリウム、
クエン酸カリウムなどの公知の遅延剤が用いられる。通
常セメントに対してＯ〜０゜５重量％添加される。The (B) organic carboxylic acid salts used in the present invention include sodium gluconate, citric acid, sodium citrate,
Known retarders such as potassium citrate are used. It is usually added in an amount of 0 to 0.5% by weight based on cement.
本発明に用いられる石膏とは半水石膏、三水石膏である
が好ましくは半水石膏である。通常セメントに対して１
〜１０重量％重量％社用。The gypsum used in the present invention includes hemihydrate gypsum and trihydrate gypsum, but preferably hemihydrate gypsum. 1 for normal cement
~10wt%wt% company use.
本発明のセメント！８．濁液組成物において、セメン）
Ｑ濁液は通常重量比としてセメント：水の比率が２：１
〜０．６：１程度とされ、アルミン酸アルカリ金属塩と
炭酸アルカリ金属塩の重量比率はｌ：１〜１：Ｌ１程度
が好ましい。Cement of the invention! 8. In suspension compositions, cement)
The Q suspension usually has a cement:water ratio of 2:1 by weight.
The weight ratio of alkali metal aluminate to alkali metal carbonate is preferably about 1:1 to 1:L1.
本発明のセメント懸濁液組成物は通常は地盤や型枠に注
入する隙にセメントと（Ａ）有機カルボン酸（塩）およ
び石膏を水に溶解または懸濁させた１αにアルミン酸ア
ルカリ金属塩と炭酸アルカリ金属ｊ＝および／または（
Ｂ）有機カルボン酸く塩）を溶解または懸濁させてから
注入する。調整方法は撹拌機けき容器に水を入れ、充分
攪拌しながら（Ａ）有機カルボン酸く塩）と石膏を添加
し、続いてセメントを添加して充分！！！濁させた後に
アルミン酸アルカリ金属塩と炭酸アルカリ金属塩と（Ｂ
）有機カルボン酸（塩）を添加することが好ましい。The cement suspension composition of the present invention is usually prepared by dissolving or suspending cement, (A) an organic carboxylic acid (salt), and gypsum in water to form an alkali metal aluminate. and alkali metal carbonate j= and/or (
B) Dissolve or suspend the organic carboxylic acid salt) before injecting. The adjustment method is to put water in a stirrer container, add (A) organic carboxylic acid salt) and gypsum while stirring thoroughly, and then add cement. ! ! After making it cloudy, alkali metal aluminate and alkali metal carbonate (B
) It is preferable to add an organic carboxylic acid (salt).
［作 用コ
（Ａ）有機カルボン酸（塩）はセメントの水和゛初期に
アルミン酸アルカリ金属塩および炭酸アルカリ金属塩か
共存することによって極めて大さな凝結硬化促進作用を
示す一方、十数時間以後の強度発現を遅延させる。ここ
に適当量の（Ｂ）有機カルボン酸く塩）が共存すると初
期の凝結硬化促進作用を任意に遅延させて流動性を保つ
ものの更に強度発現を遅延させる。しかしながら更に石
膏が共存すると初期の凝結硬化促進作用を任意に遅延さ
せて数十分から２時間程度の流動性を保持する一方、（
Ａ）有機カルボン酸（塩）や（Ｂ）有機カルボン酸（塩
）の遅延作用を打ち消して強度発現を促進させるばかり
でなくブリージング水を減少させろ。これとは逆にセメ
ントの水和が始まった後に有機カルボン酸（塩）を添加
すると単に遅延作用を示すのみて凝結硬化促進作用が低
下し、したがって石膏による強度発現の促進効果が低下
する。[Action (A) Organic carboxylic acid (salt) exhibits an extremely large effect of accelerating setting and hardening when alkali metal aluminates and alkali metal carbonates coexist in the initial stage of cement hydration; Delays the development of strength over time. If an appropriate amount of (B) (organic carboxylic acid salt) coexists here, the initial setting and hardening accelerating action is arbitrarily delayed, maintaining fluidity, but further delaying strength development. However, when gypsum coexists, the initial setting and hardening promotion effect is arbitrarily delayed and fluidity is maintained for several tens of minutes to about 2 hours, while (
Not only should you cancel the retarding effects of A) organic carboxylic acid (salt) and (B) organic carboxylic acid (salt) to promote strength development, but also reduce breathing water. On the contrary, if an organic carboxylic acid (salt) is added after the hydration of cement has begun, it merely shows a retarding effect and the setting and hardening accelerating effect is reduced, and therefore the effect of promoting strength development by gypsum is reduced.
［発明の効果］
したがって本発明のセメント懸濁液組成物は調整中や地
盤や型枠に注入する途中では硬化せず、注入後はセメン
トが沈降分離する以前に硬化するように凝結硬化時間を
調整することが可能であり全体的に均一に硬化せしめて
極めて強度の大きな凝結硬化体を得ろことが出来る。[Effects of the Invention] Therefore, the cement suspension composition of the present invention does not harden during preparation or during injection into the ground or formwork, and after injection, the setting and hardening time is set so that it hardens before the cement settles and separates. It is possible to adjust the hardness, and it is possible to uniformly harden the entire body to obtain a hardened and hardened product with extremely high strength.
次ぎに実施例をもって本発明を説明する。Next, the present invention will be explained with reference to Examples.
実施例１゜
撹拌機付き容器に水を入れ、攪拌しながらクエン酸と半
水石膏を第１表に示すように添加した。Example 1 Water was placed in a container equipped with a stirrer, and while stirring, citric acid and gypsum hemihydrate were added as shown in Table 1.
次ぎにセメント８００ｇを添加した後にＡｌ２Ｏ３成分
が５２．９重量％、モル比Ｎａ２Ｏ／ＡＩ＞０３が１．
２のアルミン酸ナトリウムと炭酸ナトリウムとを２５ニ
ア５に混合したものを３０ｇとグルコン酸ナトリウム１
ｇｆｔ添加した。水は練り上がりセメント懸濁液がｌｆ
Ｌになるように調整した。Next, after adding 800 g of cement, the Al2O3 component was 52.9% by weight and the molar ratio Na2O/AI>03 was 1.
30g of a mixture of sodium aluminate and sodium carbonate (2) in 25 nia 5 and sodium gluconate 1
gft was added. The water is kneaded and the cement suspension is lf
I adjusted it to be L.
セメント懸濁液を作製してから５分後にフロー（Ｊロー
ト）を測定した。同時にブリージング水測定用のサンプ
リングをして２０時間後にブリージング水を測定した。Flow (J funnel) was measured 5 minutes after the cement suspension was prepared. At the same time, sampling was performed to measure breathing water, and the breathing water was measured 20 hours later.
ゲルタイムおよび一軸圧縮強度を測定した結果もまとめ
て第１表に示した。The results of measuring gel time and unconfined compressive strength are also summarized in Table 1.
第１表では適当量のクエン酸の存在によって強度発現が
促進され、適当量の半水石膏の共存によって更に強度発
現が促進されるばかりでなくゲルタイムが延長され、同
時にブリージング水が減少することがわかる。Table 1 shows that the presence of an appropriate amount of citric acid promotes strength development, and the coexistence of an appropriate amount of gypsum hemihydrate not only promotes strength development but also extends gel time, and at the same time reduces breathing water. Recognize.
実施例２゜
第２表に示した（Ａ）有園カルボン酸く塩）５ｇ、実施
例１で用いたアルミン酸ナトリウムと炭酸ナトリウムの
混合物７５ｇを使用した以外は実表１
験Ｎｏ２３と同様にセメント懸濁液を調整し、ゲルタイ
ム等を測定し、た。結果を第２表に示した。Example 2 Same as in Experiment No. 23 in Table 1 except that 5 g of (A) Arizono carboxylic acid salt shown in Table 2 and 75 g of the mixture of sodium aluminate and sodium carbonate used in Example 1 were used. A cement suspension was prepared and gel time etc. were measured. The results are shown in Table 2.
表２
＊は三水石膏を使用した
第２表では（Ａ）有機カルボン酸としてクエン酸（塩）
、リンゴ酸く塩）を使用すると強度発現を促進させろば
かりでなくブリージング水を減少させることもわかる。Table 2 *In Table 2 using gypsum trihydrate, (A) citric acid (salt) as organic carboxylic acid.
It can be seen that the use of malic acid salts) not only promotes strength development but also reduces breathing water.
実９ｊ Ｎ ｏ ２８．３０に示したように石膏として
三水石膏を使用すると半水石膏に比較して強度発現がや
や劣り、ブリージング水がやや多いことがわかる。一方
、クエン酸（塩〕はゲルタイムを延長させるがリンゴ酸
く塩）は延長させないことがわかる。As shown in Example 9j No. 28.30, when trihydrate gypsum is used as plaster, the strength development is slightly inferior to that of hemihydrate gypsum, and the amount of breathing water is slightly higher. On the other hand, it can be seen that citric acid (salt) extends the gel time, but malic acid (salt) does not.
実施例３゜
第３表に示すようにアルミン酸アルカリ金属塩と炭酸ア
ルカリ金属塩の比率を変えた混合物５０ｇを使用した以
外は実験Ｎｏ２９と同様にセメント懸濁液を調整し、ゲ
ルタイム等を測定した。結果を第３表に示した。Example 3 Cement suspension was prepared in the same manner as Experiment No. 29, except that 50 g of a mixture with different ratios of alkali metal aluminate and alkali metal carbonate as shown in Table 3 was used, and gel time etc. were measured. did. The results are shown in Table 3.
第３表ではアルミン酸アルカリ金属塩と炭酸アルカリ金
属塩の重量比率は強度発現の促進およびブリージング水
の減少の点からｌ：ｌ〜１：４程度が好ましいことがわ
かる。Table 3 shows that the weight ratio of alkali metal aluminate to alkali metal carbonate is preferably about 1:1 to 1:4 from the viewpoint of promoting strength development and reducing breathing water.
表３
実施例４゜
第４表に示すように（Ｂ）有機カルボン酸く塩）とセメ
ントを変量した以外は実験Ｎ０２９と同様にセメント懸
濁液
した。結果を第４表に示した。Table 3 Example 4 A cement suspension was prepared in the same manner as in Experiment No. 029, except that (B) (organic carboxylic acid salt) and cement were varied as shown in Table 4. The results are shown in Table 4.
表４
＊実％尖Ｎ０Ｇ５、Ｎ０６６は各々り°ｊ１コン酸ナト
リウムに代えてクエン酸、クエン酸ナトリウムを使用し
た第４表では（Ｂ）有機カルボン酸（塩）として適当１
のグルコン酸ナトリウムやクエン酸、クエン酸ナトリウ
ムなとの遅延剤を用いろことによって強度発現が低下す
ることなくゲルタイムを延長させろことがわかる。Table 4 *Actual % sharpness N0G5 and N066 are respectively °j1 In Table 4, citric acid and sodium citrate are used instead of sodium connate (B) Suitable as organic carboxylic acid (salt) 1
It can be seen that by using retardants such as sodium gluconate, citric acid, and sodium citrate, the gel time can be extended without decreasing the strength development.
比較例１゜
実験Ｎｏ６２において実験Ｎｏ（３２と同量のアルミン
酸ナトリウム、炭酸ナトリウム、クエン酸ナトリウム、
半水石膏、グルコン酸ナトリウムを一括混合し、該混合
物をセメントを添加した１麦に゛添加してセメント懸濁
液を調整した。Comparative Example 1゜In Experiment No. 62, the same amount of sodium aluminate, sodium carbonate, sodium citrate,
Gypsum hemihydrate and sodium gluconate were mixed together, and the mixture was added to wheat to which cement had been added to prepare a cement suspension.
該添加方法ではゲルタイムおよびブリージング水は実験
Ｎｏ６２と同程度であるが強度発現が低下することがわ
かる。It can be seen that with this addition method, the gel time and breathing water were at the same level as in Experiment No. 62, but the strength development was reduced.
比較６す２゜
実験Ｎｏ６２において比較例１て用いた添削の混合物を
セメントを添加する前に添加してセメント懸濁液を調整
した。Comparison 6-2 In Experiment No. 62, the correction mixture used in Comparative Example 1 was added before adding cement to prepare a cement suspension.
該添加方法ではゲルタイムは大幅に延長し、ブリージン
グ水は極端に多くなる。また強度発現も低下することが
わかる。With this addition method, the gel time is significantly extended and the amount of breathing water is extremely large. It can also be seen that the strength development also decreases.
比較例３゜
実験Ｎ０６２においてセメントを添加する前にグルコン
酸すトリウムをクエン酸ナトリウム、半水石膏と一緒に
添加してセメント懸濁液を調整した。Comparative Example 3 In Experiment No. 062, thorium gluconate was added together with sodium citrate and gypsum hemihydrate to prepare a cement suspension before adding cement.
該添加方法てはブリージング水および強度発現は実験Ｎ
ｏ６２と同程度であるがゲルタイムを延長させる効果が
小さいことがわかる。The addition method is breathing water and the strength development is Experiment N.
Although it is comparable to o62, it can be seen that the effect of extending gel time is small.
表５Table 5
Claims (5)
膏を水に溶解または懸濁させた液にアルミン酸アルカリ
金属塩と炭酸アルカリ金属塩および／または（Ｂ）有機
カルボン酸（塩）を溶解または懸濁させて成ることを特
徴とするセメント懸濁液組成物(1) Add an alkali metal aluminate, an alkali metal carbonate, and/or (B) an organic carboxylic acid (salt) to a solution in which cement, (A) an organic carboxylic acid (salt), and gypsum are dissolved or suspended in water. Cement suspension composition characterized by being formed by dissolving or suspending
ウムおよび／またはアルミン酸カリウムである「特許請
求の範囲第（１）項」に記載のセメント懸濁液組成物(2) The cement suspension composition according to claim (1), wherein the alkali metal aluminate is sodium aluminate and/or potassium aluminate.
または炭酸カリウムである「特許請求の範囲第（１）項
または第（２）項」に記載のセメント懸濁液組成物(3) The alkali metal carbonate is sodium carbonate and/or
or potassium carbonate, the cement suspension composition according to claim (1) or (2).
ン酸ナトリウム、クエン酸カリウムから選ばれた少なく
とも１種である「特許請求の範囲第（１）項または第（
２）項または第（３）項」に記載のセメント懸濁液組成
物(4) The organic carboxylic acid (salt) (A) is at least one selected from citric acid, sodium citrate, and potassium citrate.
Cement suspension composition according to item 2) or item 3)
）項または第（２）項または第（３）項または第（４）
項」に記載のセメント懸濁液組成物(5) “Claim No. 1 (1) in which the gypsum is hemihydrate gypsum”
) or (2) or (3) or (4)
Cement suspension composition described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26995787A JP2568223B2 (en) | 1987-10-26 | 1987-10-26 | Cement suspension composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26995787A JP2568223B2 (en) | 1987-10-26 | 1987-10-26 | Cement suspension composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01111761A true JPH01111761A (en) | 1989-04-28 |
| JP2568223B2 JP2568223B2 (en) | 1996-12-25 |
Family
ID=17479572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26995787A Expired - Fee Related JP2568223B2 (en) | 1987-10-26 | 1987-10-26 | Cement suspension composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2568223B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01133965A (en) * | 1987-11-18 | 1989-05-26 | Denki Kagaku Kogyo Kk | Material for cement milk construction method |
-
1987
- 1987-10-26 JP JP26995787A patent/JP2568223B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01133965A (en) * | 1987-11-18 | 1989-05-26 | Denki Kagaku Kogyo Kk | Material for cement milk construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2568223B2 (en) | 1996-12-25 |
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