JPH0748158A - Superretarder for cement-based grout material - Google Patents

Superretarder for cement-based grout material

Info

Publication number
JPH0748158A
JPH0748158A JP20718293A JP20718293A JPH0748158A JP H0748158 A JPH0748158 A JP H0748158A JP 20718293 A JP20718293 A JP 20718293A JP 20718293 A JP20718293 A JP 20718293A JP H0748158 A JPH0748158 A JP H0748158A
Authority
JP
Japan
Prior art keywords
cement
copolymer
monomer
superretarder
dicarboxylic acid
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.)
Pending
Application number
JP20718293A
Other languages
Japanese (ja)
Inventor
Tetsuo Hamaguchi
哲夫 浜口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zeon Corp
Original Assignee
Nippon Zeon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP20718293A priority Critical patent/JPH0748158A/en
Publication of JPH0748158A publication Critical patent/JPH0748158A/en
Pending legal-status Critical Current

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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2664—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
    • 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
    • C04B2103/20—Retarders
    • 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
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/308—Slump-loss preventing agents

Abstract

PURPOSE:To improve setting retardation by using a superretarder for cement- based grout material consisting essentially of a copolymer salt composed of an alpha,beta-unsaturated dicarboxylic acid-based monomer and an ethylenic unsaturated monomer in a specific molecular ratio. CONSTITUTION:(A) A 4-10C alpha,beta-unsaturated dicarboxylic acid-based monomer such as maleic anhydride is radical polymerized with (B) a 2-IOC ethylenic unsaturated monomer such as isoamylene to prepare a copolymer comprising 20-80mol% of the component A and 80-20mol% of the component B, having 500-50,000 number-average molecular weight. Then the copolymer is neutralized in the presence of a base such as an alkali metal to form a copolymer salt. Then, the copolymer salt is dissolved in water to give an aqueous solution having 10-50wt.% solid content concentration, which is optionally mixed with a dispersant, an anti-foaming agent, an air-entraining agent, etc., to give a superretarder for cement-based grout material. Retardation of a setting period of >= about 10 days can be attained by mixing 100 pts.wt. of cement with about 0.2-1.5 pt.wt. based on the solid content of the superretarder.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はセメント系グラウト材用
超遅延剤に関する。さらに詳しくはα，β−不飽和ジカ
ルボン酸系モノマーとエチレン系不飽和モノマーとの共
重合体塩を主成分とするセメント系グラウト材用超遅延
剤に関する。FIELD OF THE INVENTION The present invention relates to a super retarder for cement-based grout materials. More specifically, it relates to an ultra-retardant for cement-based grout materials containing a copolymer salt of an α, β-unsaturated dicarboxylic acid monomer and an ethylenically unsaturated monomer as a main component.

【０００２】[0002]

【従来の技術】軟弱地盤を改良するために、セメント系
グラウト材を硬化材として高圧噴射工法により地盤中に
噴射し、土と攪拌、混合して硬化させ、地盤を安定化さ
せる工法が行われているが（特開平４−３６７５４８号
等）、セメント系グラウト材には高流動性が必要なこと
からセメントと水とからなるセメントスラリーが用いら
れている。このような工法が行われる施工現場では、た
とえば、セメント硬化物の打継ぎが避けられない場合
や、あるいは、夜間の工事を回避したい時などには、セ
メントの凝結開始時期を数時間から数日間にわたって遅
延させる必要がしばしば生じる。従来、セメント硬化物
等の凝結時機を遅延させるものには、コンクリート用超
遅延剤として使用されているオキシカルボン酸塩等が知
られており（例えば、セメント・コンクリート第４７１
号、５月号、第３１〜３７頁など）、これらは一般にポ
リアルキルアリルスルホン酸等のセメント用減水剤が使
用されている場合に併用して添加されるものである。し
かし、オキシカルボン酸塩は、セメントの種類や添加時
期、添加量によってその効果が異なることから、セメン
ト用減水剤と併用する場合には添加の時期を決定するこ
とが重要であることの他、とりわけ、その添加量のわず
かな変動によってセメント硬化物の凝結時間が極端に長
くなることから、セメント系グラウト材による高圧噴射
工法の施工現場においては、添加量を管理するのが難し
いという問題がある。2. Description of the Related Art In order to improve soft ground, a method is used in which cement-based grout material is used as a hardening material and is injected into the ground by a high-pressure injection method, and is mixed and mixed with soil to harden and stabilize the ground. However, since a high fluidity is required for the cement-based grout material, a cement slurry composed of cement and water is used for the cement-based grout material. At the construction site where such a construction method is performed, for example, when jointing of hardened cement is unavoidable, or when it is desired to avoid construction at night, the setting start time of cement is set to several hours to several days. Often the need to delay over. Conventionally, oxycarboxylic acid salts and the like used as a super retarder for concrete are known to delay the setting time of hardened cement products (for example, Cement / Concrete No. 471).
No., May, pp. 31-37, etc.), which are generally added together when a water reducing agent for cement such as polyalkylallyl sulfonic acid is used. However, oxycarboxylates have different effects depending on the type of cement, the timing of addition, and the amount added, so it is important to determine the timing of addition when used in combination with a water reducing agent for cement. In particular, the setting time of the high-pressure injection method using cement-based grout material is difficult to control because the setting time of the hardened cement material becomes extremely long due to slight fluctuations in the addition amount. .

【０００３】[0003]

【発明が解決しようとする課題】本発明の目的は、セメ
ント用減水剤等と併用することなく、単独使用でセメン
ト系グラウトの流動性と凝結遅延性の両方に効果があ
り、また、添加量のわずかな変動に影響されることなく
安定した効果を有するセメント系グラウト材用超遅延剤
を提供することにある。本発明者等はかかる目的を達す
べく鋭意研究の結果、α，β−不飽和ジカルボン酸系モ
ノマーを用いた共重合体塩が有効であることを見出し、
この知見に基づいて本発明を完成するに到った。The object of the present invention is to have an effect on both the fluidity and the retardation of setting of cement grout when used alone without being used in combination with a water reducing agent for cement, etc. An object of the present invention is to provide an ultra-retardant for cement-based grout materials, which has a stable effect without being affected by a slight fluctuation of As a result of earnest research to achieve such an object, the present inventors have found that a copolymer salt using an α, β-unsaturated dicarboxylic acid type monomer is effective,
The present invention has been completed based on this finding.

【０００４】[0004]

【課題を解決するための手段】かくして本発明によれ
ば、以下（１）および（２）が提供される。 （１）α，β−不飽和ジカルボン酸系モノマーとエチレ
ン系不飽和モノマーとの共重合体塩を主成分とするセメ
ント系グラウト材用超遅延剤。 （２）炭素数４〜１０を有するα，β−不飽和ジカルボ
ン酸系モノマー２０〜８０モル％と炭素数２〜１０を有
するエチレン系不飽和モノマー８０〜２０モル％との共
重合体塩を主成分とする（１）のセメント系グラウト材
用超遅延剤。According to the present invention, therefore, the following (1) and (2) are provided. (1) A super retarder for cement-based grout materials, which comprises a copolymer salt of an α, β-unsaturated dicarboxylic acid monomer and an ethylenically unsaturated monomer as a main component. (2) A copolymer salt of 20 to 80 mol% of an α, β-unsaturated dicarboxylic acid monomer having 4 to 10 carbon atoms and 80 to 20 mol% of an ethylenically unsaturated monomer having 2 to 10 carbon atoms. (1) Super delay agent for cement-based grout material, which is the main component.

【０００５】本発明のセメント系グラウト材用超遅延剤
は、α，β−不飽和ジカルボン酸系モノマーとエチレン
系不飽和モノマーとの共重合体の分子中に存在するカル
ボキシル基または酸無水物基の少なくとも一部、好まし
くは５０モル％以上が塩を形成しているものを主成分と
するものであり、該共重合体は、通常、数平均分子量５
００〜５００００、好ましくは１０００〜２５０００、
さらに好ましくは３０００〜１００００を有するもので
ある。該共重合体の数平均分子量が過度に大きくなると
分散性が低下し、セメントスラリーを増粘、凝集させる
効果が生ずるため好ましくない。かかる塩の具体例とし
て、例えばナトリウム、カリウム、マグネシウム、カル
シウム、バリウムなどのごときアルカリ金属またはアル
カリ土類金属の塩、アンモニウム塩、アミン塩などが例
示され、なかでも経済性の面からナトリウム塩が好まし
い。The super retarder for cement-based grout materials of the present invention is a carboxyl group or acid anhydride group present in the molecule of a copolymer of an α, β-unsaturated dicarboxylic acid monomer and an ethylenically unsaturated monomer. Of which at least a part, preferably 50 mol% or more, form a salt as a main component, and the copolymer usually has a number average molecular weight of 5
00-50000, preferably 1000-25000,
More preferably, it has 3000-10000. If the number average molecular weight of the copolymer is excessively large, the dispersibility is lowered, and the effect of thickening and aggregating the cement slurry occurs, which is not preferable. Specific examples of such salts include salts of alkali metals or alkaline earth metals such as sodium, potassium, magnesium, calcium, barium, ammonium salts, amine salts, and the like. Among them, sodium salts are economically advantageous. preferable.

【０００６】本発明で使用するα，β−不飽和ジカルボ
ン酸系モノマーは、カルボキシル基または酸無水物基を
有する不飽和ジカルボン酸またはその無水物を指し、そ
の具体例としては、マレイン酸、フマル酸、イタコン
酸、無水マレイン酸、無水イタコン酸、無水シトラコン
酸などの炭素数４〜１０を有するものが例示され、なか
でも反応性、品質、経済性などの面から無水マレイン酸
が賞用される。The α, β-unsaturated dicarboxylic acid type monomer used in the present invention refers to an unsaturated dicarboxylic acid having a carboxyl group or an acid anhydride group or an anhydride thereof, and specific examples thereof include maleic acid and fumaric acid. Examples thereof include those having 4 to 10 carbon atoms such as acid, itaconic acid, maleic anhydride, itaconic anhydride, and citraconic anhydride. Among them, maleic anhydride is preferred from the aspects of reactivity, quality, economy and the like. It

【０００７】本発明で使用するエチレン系不飽和モノマ
ーは、前記α，β−不飽和ジカルボン酸系モノマーとラ
ジカル重合可能なものであればいずれでもよく、その具
体例として、例えばエチレン、プロピレン、ブテン、２
−メチル−ブテン−１、２−メチル−ブテン−２、ヘキ
セン、オクテン、イソアミレン、ジイソブチレン、デセ
ン、シクロペンテン、シクロヘキセン等のオレフイン；
スチレン、ビニルトルエン、α−メチルスチレン、クマ
ロン、インデン等の芳香族ビニル系モノマー；メチルビ
ニルエーテル等のビニルエーテル系モノマー；アクリル
酸エチル、メタアクリル酸メチル等のアクリル酸アルキ
ルエステル系モノマー；および酢酸ビニル等が挙げられ
る。なかでも炭素数２〜１０を有するオレフイン、とく
に炭素数４〜６を有するオレフインが賞用される。また
必要に応じて二種以上のエチレン系不飽和モノマーを併
用することができる。The ethylenically unsaturated monomer used in the present invention may be any one as long as it can be radically polymerized with the α, β-unsaturated dicarboxylic acid type monomer, and specific examples thereof include ethylene, propylene and butene. Two
Olefins such as -methyl-butene-1,2-methyl-butene-2, hexene, octene, isoamylene, diisobutylene, decene, cyclopentene, cyclohexene;
Aromatic vinyl monomers such as styrene, vinyltoluene, α-methylstyrene, coumarone, and indene; vinyl ether monomers such as methyl vinyl ether; alkyl acrylate monomers such as ethyl acrylate and methyl methacrylate; and vinyl acetate, etc. Is mentioned. Of these, olefins having 2 to 10 carbon atoms, especially olefins having 4 to 6 carbon atoms are used. If necessary, two or more kinds of ethylenically unsaturated monomers can be used in combination.

【０００８】該共重合体中のα，β−不飽和ジカルボン
酸系モノマーの比率は適宜選択しうるが、通常、２０モ
ル％以上８０モル％以下、好ましくは４０モル％以上６
０モル％以下、もっと好ましいのは５０モル％である。The ratio of the α, β-unsaturated dicarboxylic acid type monomer in the copolymer can be appropriately selected, but is usually 20 mol% or more and 80 mol% or less, preferably 40 mol% or more 6
It is 0 mol% or less, and more preferably 50 mol%.

【０００９】本発明で使用するα，β−不飽和ジカルボ
ン酸系モノマーとエチレン系不飽和モノマーとの共重合
体はその製法によって制限されるものではないが、通常
は常法に従ってラジカル重合により製造される。また、
該共重合体の塩の製法は格別制限されるものではなく、
モノマーを中和したのち重合する方法、重合体または共
重合体を合成した後に常法に従って塩基の存在下で中和
する方法のいずれを採用してもよい。The copolymer of the α, β-unsaturated dicarboxylic acid type monomer and the ethylenically unsaturated monomer used in the present invention is not limited by its production method, but it is usually produced by radical polymerization according to a conventional method. To be done. Also,
The method for producing the salt of the copolymer is not particularly limited,
Either a method of neutralizing a monomer and then polymerizing it, or a method of synthesizing a polymer or a copolymer and then neutralizing it in the presence of a base according to a conventional method may be used.

【００１０】本発明で使用するα，β−不飽和ジカルボ
ン酸系モノマーとエチレン系不飽和モノマーとの共重合
体の塩の形態は固形であっても水溶液であってもよい
が、通常は取り扱いの容易さを考えて固形分濃度１０〜
５０重量％の水溶液で使用される。この際、本発明の効
果を本質的に損わない範囲であれば減水剤、分散剤、空
気連行剤、消泡剤等の添加剤やその他の配合剤を適宜混
合することもできる。The salt form of the copolymer of the α, β-unsaturated dicarboxylic acid type monomer and the ethylenically unsaturated monomer used in the present invention may be solid or aqueous solution, but it is usually handled. Considering the ease of
Used in a 50% by weight aqueous solution. At this time, additives such as a water reducing agent, a dispersant, an air entraining agent, an antifoaming agent and the like and other compounding agents can be appropriately mixed as long as the effects of the present invention are not substantially impaired.

【００１１】本発明のセメント系グラウト材用超遅延剤
を使用してセメント系グラウト材の凝結を遅延させる方
法は、通常セメント配合物中のセメント１００重量部に
対してα，β−不飽和ジカルボン酸系モノマーとエチレ
ン系不飽和モノマーの共重合体塩の固形分基準で通常
０．２重量部〜１．５重量部を配合することによって行
なう。該配合量が０．２重量部未満ではセメント系グラ
ウト材の凝結を遅延させる効果が得られないので好まし
くない。また、１．５重量部を超えると凝結時間が１０
日以上まで極端に遅延し、実用的ではないので好ましく
ない。The method for delaying the setting of the cement-based grout material by using the super-retardant for cement-based grout material of the present invention is generally α, β-unsaturated dicarboxylic acid based on 100 parts by weight of the cement in the cement mixture. It is usually carried out by adding 0.2 to 1.5 parts by weight based on the solid content of the copolymer salt of the acid-based monomer and the ethylenically unsaturated monomer. If the amount is less than 0.2 parts by weight, the effect of delaying the setting of the cement-based grout material cannot be obtained, which is not preferable. If the amount exceeds 1.5 parts by weight, the setting time will be 10
It is extremely unfavorable because it is delayed for more than a day and is not practical.

【００１２】本発明で使用するセメント系グラウト材
は、高圧噴射工法によって地盤中に噴射することに適し
た、セメントと水とからなる高流動性のセメントスラリ
ーである。使用出来るセメントの種類はとくに限定され
ず、その具体例として、例えば普通ポルトランドセメン
ト、早強ポルトランドセメント、中庸熱ポルトランドセ
メント、アルミナセメント、フライアッシュセメント、
高炉セメント、シリカセメント、鉱滓セメント、各種混
合セメント等が挙げられる。The cement-based grout material used in the present invention is a highly fluid cement slurry composed of cement and water, which is suitable for being injected into the ground by the high-pressure injection method. The type of cement that can be used is not particularly limited, and specific examples thereof include ordinary Portland cement, early strength Portland cement, moderate heat Portland cement, alumina cement, fly ash cement,
Examples thereof include blast furnace cement, silica cement, slag cement, and various mixed cements.

【００１３】[0013]

【実施例】以下に実施例を挙げて本発明をさらに具体的
に説明する。なお、実施例、比較例及び参考例中の部及
び％はとくに断りのないかぎり重量基準である。 （試験方法） １．セメントスラリー ジェットグラウト用配合（以下、ＪＧ配合と記す）のセ
メントスラリーに砂質粘土（含水率１３．５％、砂／粘
土＝８／２）を配合し、地盤を想定したセメントスラリ
ーを調製した。使用した材料および配合は次のとおりで
ある。 セメント：普通ポルトランドセメント 水 ：水道水 砂 ：豊浦標準砂 粘土 ：カオリン（ＳＡＭクレー） なお配合を表１に示した。EXAMPLES The present invention will be described in more detail with reference to the following examples. In addition, parts and% in the examples, comparative examples and reference examples are based on weight unless otherwise specified. (Test method) 1. Cement Slurry A cement slurry having a composition for jet grouting (hereinafter, referred to as JG composition) was mixed with sandy clay (water content 13.5%, sand / clay = 8/2) to prepare a cement slurry assuming a ground. . The materials and formulations used are as follows. Cement: Ordinary Portland cement Water: Tap water Sand: Toyoura standard sand Clay: Kaolin (SAM clay) Table 1 shows the composition.

【００１４】[0014]

【表１】 [Table 1]

【００１５】２．流動性試験 日本土木学会基準（ＪＳＣＥ−１９８６）に従いＰロー
トによるセメントスラリーの流下時間を測定した（単
位：秒）。 ３．凝結時間 プロクター貫入抵抗、始発３５（ｋｇ／ｃｍ2 ）で測定
した（単位：時間）。 ４．圧縮強度 ＪＩＳ Ｒ−５２０１のセメント物理試験方法に準じ
て、供試体（直径５ｃｍ、高さ１０ｃｍの円筒）を作成
し、３日間気中養生後、水中養生を行い、７日後と２８
日後の圧縮強度を求めた（単位：ｋｇ／ｃｍ2 ）。2. Flowability test The flow time of the cement slurry in the P funnel was measured according to the Japan Society of Civil Engineers standard (JSCE-1986) (unit: second). 3. Caking time Proctor penetration resistance, initial 35 (kg / cm 2 ) was measured (unit: hour). 4. Compressive strength A specimen (cylinder having a diameter of 5 cm and a height of 10 cm) was prepared in accordance with the cement physical test method of JIS R-5201, and after air curing for 3 days, water curing was performed for 7 days and 28 days.
The compressive strength after day was determined (unit: kg / cm 2 ).

【００１６】実施例１〜８、比較例１〜６ ラジカル重合によって得られたイソアミレンと無水マレ
イン酸との等モル共重合体（重量平均分子量６０００）
のナトリウム塩（以下、ＩＡ／ＭＡ等モル共重合体Ｎａ
塩と記す）の４０％水溶液を調製して、表２に示す添加
量でセメントスラリーに添加して、流動性試験、凝結時
間および圧縮強度を測定した。また、比較のため、既存
のセメント用減水剤であるポリアルキルアリルスルホン
酸高縮合物（マイテイー１５０ 花王（株）社製 以
下、ＭＴ−１５０と記す）とグルコン酸のナトリウム塩
を所定量添加した場合についても同様に測定した。結果
を表２に示す。なお、添加量はセメント１００重量部に
対する重量部である。Examples 1-8, Comparative Examples 1-6 Equimolar copolymers of isoamylene and maleic anhydride obtained by radical polymerization (weight average molecular weight 6000)
Sodium salt (hereinafter referred to as IA / MA equimolar copolymer Na
A 40% aqueous solution of salt) was prepared and added to the cement slurry in the amounts shown in Table 2, and the fluidity test, setting time and compressive strength were measured. For comparison, a predetermined amount of a polycondensed allyl sulfonic acid high condensate (Mighty 150 Kao Co., Ltd., hereinafter referred to as MT-150) which is an existing cement water reducing agent and a sodium salt of gluconic acid were added. The same measurement was performed in each case. The results are shown in Table 2. The addition amount is parts by weight based on 100 parts by weight of cement.

【００１７】[0017]

【表２】 [Table 2]

【００１８】表２の結果から、本発明のセメント系グラ
ウト材用超遅延剤は、セメントスラリーの流動性と凝結
遅延性との両方に効果を示すことがわかる。また、本発
明の超遅延剤の凝結遅延効果は、添加量の変動に影響さ
れることなく安定した効果を有することがわかる。これ
に対して、従来使用されているグルコン酸の場合は、添
加量のわずかな変動が、セメントスラリーの凝結時間に
大きな影響を与えることがわかる。From the results shown in Table 2, it can be seen that the super retarder for cement-based grout materials of the present invention is effective in both the fluidity and the retardation of setting of the cement slurry. Further, it can be seen that the setting retarding effect of the super-retarding agent of the present invention has a stable effect without being influenced by the fluctuation of the addition amount. On the other hand, in the case of the conventionally used gluconic acid, it can be seen that a slight variation in the addition amount has a great influence on the setting time of the cement slurry.

【００１９】[0019]

【発明の効果】かくして本発明によれば、セメントスラ
リーの流動性と凝結遅延性の両者に効果を有し、また、
添加量のわずかな変動に影響されることなく、安定した
凝結遅延効果が得られるセメント系グラウト材用超遅延
剤が得られる。Thus, according to the present invention, it has an effect on both the fluidity and setting retardation of the cement slurry, and
A super retarder for cement-based grout materials that can obtain a stable setting retarding effect without being affected by slight fluctuations in the amount added.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 17/48 Ｐ 9451−4Ｈ //(Ｃ０４Ｂ 28/02 24:26） Ｈ 103:22 111:70 Ｃ０９Ｋ 103:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location C09K 17/48 P 9451-4H // (C04B 28/02 24:26) H 103: 22 111: 70 C09K 103: 00

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 α，β−不飽和ジカルボン酸系モノマー
とエチレン系不飽和モノマーとの共重合体塩を主成分と
するセメント系グラウト材用超遅延剤。1. A super retarder for cement-based grout materials, which comprises a copolymer salt of an α, β-unsaturated dicarboxylic acid monomer and an ethylenically unsaturated monomer as a main component. 【請求項２】 炭素数４〜１０を有するα，β−不飽和
ジカルボン酸系モノマー２０〜８０モル％と炭素数２〜
１０を有するエチレン系不飽和モノマー８０〜２０モル
％との共重合体塩を主成分とする請求項１のセメント系
グラウト材用超遅延剤。2. An α, β-unsaturated dicarboxylic acid-based monomer having 4 to 10 carbon atoms in an amount of 20 to 80 mol% and a carbon number of 2 to 2 inclusive.
The super retarder for cement-based grout material according to claim 1, which comprises a copolymer salt of 80 to 20 mol% of an ethylenically unsaturated monomer having 10 as a main component.
JP20718293A 1993-07-29 1993-07-29 Superretarder for cement-based grout material Pending JPH0748158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20718293A JPH0748158A (en) 1993-07-29 1993-07-29 Superretarder for cement-based grout material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20718293A JPH0748158A (en) 1993-07-29 1993-07-29 Superretarder for cement-based grout material

Publications (1)

Publication Number Publication Date
JPH0748158A true JPH0748158A (en) 1995-02-21

Family

ID=16535608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20718293A Pending JPH0748158A (en) 1993-07-29 1993-07-29 Superretarder for cement-based grout material

Country Status (1)

Country Link
JP (1) JPH0748158A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999048833A3 (en) * 1998-03-24 1999-11-11 Bpb Plc Ready made cementitious composition
JP2001279243A (en) * 2000-03-31 2001-10-10 Grace Chemicals Kk Method for fixing anchor
JP2001322112A (en) * 2000-05-18 2001-11-20 Kuraray Co Ltd Setting retarder for inorganic molding surface and method for manufacturing inorganic molding
JP2007063414A (en) * 2005-08-31 2007-03-15 Takemoto Oil & Fat Co Ltd Premixed powder cement composition for ground improvement
JP2007092016A (en) * 2005-08-31 2007-04-12 Tokuyama Corp Ground improving additive for jet grout method of construction and ground improving cement composition using the same
JP2008120847A (en) * 2006-11-08 2008-05-29 Denki Kagaku Kogyo Kk Admixture for stabilizing ground, ground stabilizing material and method for ground stabilizing construction using the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999048833A3 (en) * 1998-03-24 1999-11-11 Bpb Plc Ready made cementitious composition
JP2001279243A (en) * 2000-03-31 2001-10-10 Grace Chemicals Kk Method for fixing anchor
JP2001322112A (en) * 2000-05-18 2001-11-20 Kuraray Co Ltd Setting retarder for inorganic molding surface and method for manufacturing inorganic molding
JP4597314B2 (en) * 2000-05-18 2010-12-15 株式会社クラレ Setting retarder for surface of inorganic molded body and method for producing inorganic molded body
JP2007063414A (en) * 2005-08-31 2007-03-15 Takemoto Oil & Fat Co Ltd Premixed powder cement composition for ground improvement
JP2007092016A (en) * 2005-08-31 2007-04-12 Tokuyama Corp Ground improving additive for jet grout method of construction and ground improving cement composition using the same
JP2008120847A (en) * 2006-11-08 2008-05-29 Denki Kagaku Kogyo Kk Admixture for stabilizing ground, ground stabilizing material and method for ground stabilizing construction using the same

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