JP3253282B2 - Additive for hydraulic composition - Google Patents
Additive for hydraulic compositionInfo
- Publication number
- JP3253282B2 JP3253282B2 JP31916898A JP31916898A JP3253282B2 JP 3253282 B2 JP3253282 B2 JP 3253282B2 JP 31916898 A JP31916898 A JP 31916898A JP 31916898 A JP31916898 A JP 31916898A JP 3253282 B2 JP3253282 B2 JP 3253282B2
- Authority
- JP
- Japan
- Prior art keywords
- additive
- hydraulic composition
- acid
- cement
- viscosity
- 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
-
- 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
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0053—Water-soluble polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に排泥液を用い
る水硬性組成物用添加剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an additive for a hydraulic composition, particularly using a sludge liquid.
【０００２】[0002]
【従来の技術】排泥液を用いる水硬性組成物には、流動
効果のあるナフタレンスルホン酸ホルムアルデヒド縮合
物やポリアルキレングリコールモノエステル系単量体と
アクリル酸系単量体等との共重合体を必須成分とするポ
リエーテル系添加剤等が提案されている（特開平８−12
398号公報）。2. Description of the Related Art Hydraulic compositions using a sludge fluid include a copolymer of naphthalenesulfonic acid formaldehyde condensate or polyalkylene glycol monoester monomer and acrylic acid monomer having a flow effect. And polyether-based additives, etc., which are essential components (JP-A-8-12).
No. 398).
【０００３】しかしこれらの添加剤では、粘土質に対す
る減粘効果とその持続性が充分ではなく、排泥液の粘性
が下がらずに排出が困難になったり、配管が途中で閉塞
する場合がある。[0003] However, these additives do not have a sufficient viscosity-reducing effect on clay and its persistence, so that the viscosity of the sludge does not decrease and the drainage becomes difficult, or the piping may be clogged on the way. .
【０００４】[0004]
【発明が解決しようとする課題】粘土質に対する減粘性
とその持続性に優れ、基準強度（28日後の強度＝30kg／
cm2）を満足する水硬性組成物用添加剤を提供すること
である。The viscosity of clay is excellent and its durability is excellent. The standard strength (strength after 28 days = 30 kg /
It is an object of the present invention to provide an additive for hydraulic composition satisfying cm 2 ).
【０００５】[0005]
【課題を解決するための手段】本発明は、（イ）不飽和
モノカルボン酸及び不飽和ジカルボン酸からなる群より
選ばれる１種以上の単量体を重合して得られる重合体又
は共重合体の水溶性塩と、（ロ）オキシカルボン酸もし
くはその塩、糖及び糖アルコールからなる群より選ばれ
る１種以上の化合物とを重量比で（イ）／（ロ）＝97／
３〜20／80の割合で含有する水硬性組成物用添加剤であ
る。The present invention relates to a polymer or copolymer obtained by polymerizing one or more monomers selected from the group consisting of (a) unsaturated monocarboxylic acids and unsaturated dicarboxylic acids. The combined water-soluble salt and one or more compounds selected from the group consisting of (ii) oxycarboxylic acid or a salt thereof, sugar and sugar alcohol are expressed in a weight ratio of (ii) / (ii) = 97 /
It is an additive for hydraulic compositions contained in a ratio of 3 to 20/80.
【０００６】（イ）成分は粘土質に対する減粘性に優れ
るが、セメント等から溶出されるアルカリイオンが混在
するとその効果は低下する。しかし（ロ）成分を併用す
ると耐塩性が向上し、セメント／粘土質系の減粘性に極
めて優れる。[0006] The component (a) is excellent in reducing viscosity to clay, but its effect is reduced when alkali ions eluted from cement or the like are mixed. However, when the component (ii) is used in combination, the salt resistance is improved, and the viscosity of the cement / clay system is extremely excellent.
【０００７】[0007]
【発明の実施の形態】本発明の（イ）成分は、アクリル
酸、メタクリル酸等の不飽和モノカルボン酸、及びマレ
イン酸、フマル酸、イタコン酸等の不飽和ジカルボン酸
からなる群より選ばれる１種以上の単量体を重合して得
られる重合体又は共重合体の水溶性塩である。好ましく
はポリアクリル酸、ポリメタクリル酸、アクリル酸／マ
レイン酸共重合体のアルカリ金属塩、アルカリ土類金属
塩、アンモニウム塩、アルキルアンモニウム塩等であ
り、特にはポリアクリル酸のナトリウム塩、アンモニウ
ム塩が好ましい。これらは公知の方法で製造可能であ
り、また一部は市販されており入手可能である。DETAILED DESCRIPTION OF THE INVENTION The component (A) of the present invention is selected from the group consisting of unsaturated monocarboxylic acids such as acrylic acid and methacrylic acid, and unsaturated dicarboxylic acids such as maleic acid, fumaric acid and itaconic acid. A water-soluble salt of a polymer or copolymer obtained by polymerizing one or more monomers. Preferred are alkali metal salts, alkaline earth metal salts, ammonium salts, alkylammonium salts and the like of polyacrylic acid, polymethacrylic acid, acrylic acid / maleic acid copolymer, and particularly sodium salts and ammonium salts of polyacrylic acid. Is preferred. These can be produced by a known method, and some of them are commercially available.
【０００８】（イ）の重合体又は共重合体の重量平均分
子量は、減粘効果の点から1000〜20000の範囲が、特に
は5000〜10000の範囲が優れる。重量平均分子量はゲル
パーミエーションクロマトグラフィ法（標準物質ポリス
チレンスルホン酸ナトリウム換算／水系）による。The weight average molecular weight of the polymer or copolymer (a) is preferably in the range of 1,000 to 20,000, particularly preferably in the range of 5000 to 10,000, from the viewpoint of the viscosity reducing effect. The weight average molecular weight is determined by gel permeation chromatography (standard substance: sodium polystyrene sulfonate conversion / water system).
【０００９】本発明の（ロ）成分のオキシカルボン酸と
しては、好ましくは炭素数２〜10のもの、好ましい具体
例としてはグルコン酸、グルコヘプトン酸、アラボン
酸、リンゴ酸またはクエン酸が挙げられる。これらの塩
としてはナトリウム塩、カリウム塩、トリエタノールア
ミン塩等が挙げられる。The oxycarboxylic acid of the component (b) of the present invention preferably has 2 to 10 carbon atoms, and specific preferred examples include gluconic acid, glucoheptonic acid, arabonic acid, malic acid and citric acid. These salts include sodium salt, potassium salt, triethanolamine salt and the like.
【００１０】また糖としてはグルコース、フルクトー
ス、ガラクトース、マンノース等の単糖類、スクロース
等の二糖類、三糖類、オリゴ糖、デキストリン等の多糖
類、糖アルコールとしてはソルビトール等が挙げられ
る。Examples of the saccharide include monosaccharides such as glucose, fructose, galactose and mannose; disaccharides such as sucrose; polysaccharides such as trisaccharides, oligosaccharides and dextrins; and saccharides such as sorbitol.
【００１１】これらの中ではスクロース、グルコン酸ナ
トリウム、デキストリン、グルコースが特に好ましい。Of these, sucrose, sodium gluconate, dextrin and glucose are particularly preferred.
【００１２】重合体（イ）と（ロ）の重量比は、粘土質
を含む水硬性組成物の減粘性を向上させる観点から、
（イ）／（ロ）＝97／３〜20／80が良く、90／10〜50／
50が好ましく、80／20〜50／50が特に好ましい。The weight ratio of the polymers (a) and (b) is determined from the viewpoint of improving the viscosity reduction of the hydraulic composition containing clay.
(B) / (b) = 97/3 to 20/80 is good, and 90/10 to 50 /
50 is preferred, and 80/20 to 50/50 is particularly preferred.
【００１３】本発明の添加剤は、一般に（イ）と（ロ）
の合計がセメントに対して、固形分で0.1〜5.0重量％、
好ましくは、0.5〜2.0重量％となるように添加される。The additives of the present invention generally comprise (a) and (b)
The total of 0.1 to 5.0% by weight of solids based on cement,
Preferably, it is added so as to be 0.5 to 2.0% by weight.
【００１４】本発明の添加剤はセメント系の水硬性材料
に添加するのが好ましく、セメントとしては普通ポルト
ランドセメントの他、高炉セメント、フライアッシュセ
メント、早強セメント等がある。本発明の（イ）と
（ロ）は水硬性材料に対し、予め両者を配合してから添
加しても、別々に添加してもよい、また先に希釈してか
ら用いてもよい。[0014] The additive of the present invention is preferably added to a cement-based hydraulic material. Examples of the cement include ordinary portland cement, blast furnace cement, fly ash cement, and early-strength cement. The components (a) and (b) of the present invention may be added to the hydraulic material after blending them in advance, may be added separately, or may be used after being diluted first.
【００１５】本発明の水硬性組成物用添加剤は特に排泥
液を用いる工法、具体的にはグラウト工法又は流動化処
理土工法に適する。グラウト工法とは、地中に水硬性組
成物を高圧ジェット噴流体として送り、周囲の土砂を削
り取り、排泥液として地上に排出しながら、地中に柱体
や壁体を構築する軟弱地盤の改良工法である。また流動
化処理土工法とは建設や土木工事で排出される土をセメ
ント類と混合して埋め戻し、再利用する工法である。The additive for hydraulic composition of the present invention is particularly suitable for a construction method using a mud liquor, specifically, a grouting method or a fluidized earth method. The grout method is a method of sending hydraulic composition into the ground as a high-pressure jet jet, scraping the surrounding earth and sand, discharging it to the ground as mud, and constructing columns and walls in the ground. This is an improved construction method. The fluidized earth method is a method in which soil discharged during construction or civil engineering work is mixed with cement, backfilled, and reused.
【００１６】尚、本発明の水硬性組成物用添加剤は、更
に公知の添加剤（材）と併用することができる。例え
ば、ＡＥ剤、ＡＥ減水剤、流動化剤、遅延剤、早強剤、
促進剤、起泡剤、発泡剤、防水剤、珪砂、高炉スラグ、
フライアッシュ、シリカヒューム等が挙げられる。The additives for hydraulic compositions of the present invention can be used in combination with known additives (materials). For example, an AE agent, an AE water reducing agent, a fluidizing agent, a retarder, an early strength agent,
Accelerator, foaming agent, foaming agent, waterproofing agent, silica sand, blast furnace slag,
Fly ash, silica fume and the like.
【００１７】[0017]
【実施例】表１に示す（イ）と表２に示す（ロ）を表３
に示す重量比で混合してなる添加剤を用い、普通ポルト
ランドセメント500ｇ／ベントナイト100ｇ／水500ｇ／
添加剤５ｇ（セメントに対して固形分で１％添加）の割
合でモルタルミキサーで低速（63r/min）で90秒間混合
し、Ｂ型粘度計で混合直後と15分後の粘度を測定した。
結果を表３に併せて示す。Embodiments (a) shown in Table 1 and (b) shown in Table 2 are shown in Table 3
Using an additive mixed at the weight ratio shown in Table 5 below, 500 g of ordinary Portland cement / 100 g of bentonite / 500 g of water /
The mixture was mixed with a mortar mixer at a low speed (63 r / min) for 90 seconds at a rate of 5 g of the additive (1% solid content was added to the cement), and the viscosity was measured immediately after mixing and 15 minutes later with a B-type viscometer.
The results are shown in Table 3.
【００１８】本発明品は減粘性に優れ、15分経過後にお
いても増粘性は低い。また実施例のものの28日後の強度
はいずれも40〜70kg／cm2であり、基準強度を満足して
いた。The product of the present invention is excellent in thinning, and its viscosity is low even after 15 minutes. In addition, the strength of each of the examples after 28 days was 40 to 70 kg / cm 2 , satisfying the reference strength.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【発明の効果】本発明の水硬性組成物用添加剤は粘土質
に対する減粘性とその持続性に優れると共に、基準強度
を満足できる。The additive for a hydraulic composition of the present invention is excellent in viscosity-reducing viscosity with respect to clay and its persistence, and can satisfy standard strength.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０４Ｂ 111:70 Ｃ０４Ｂ 111:70 (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 24/06 C04B 24/10 C04B 24/26 C04B 28/02 - 28/08 ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 7 identification code FI C04B 111: 70 C04B 111: 70 (58) Field surveyed (Int.Cl. 7 , DB name) C04B 24/06 C04B 24/10 C04B 24/26 C04B 28/02-28/08
Claims (2)
（ロ）スクロースとを、重量比で（イ）／（ロ）＝90／
10〜30／70の割合で含有する水硬性組成物用添加剤。1. A water-soluble salt of polyacrylic acid,
(B) Sucrose and (b) / (b) = 90 /
An additive for a hydraulic composition, which is contained in a ratio of 10 to 30/70 .
処理土工法用セメント組成物である請求項１の水硬性組
成物用添加剤。2. The additive for a hydraulic composition according to claim 1, wherein the hydraulic composition is a cement composition for a grout method or a fluidized earth method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31916898A JP3253282B2 (en) | 1998-11-10 | 1998-11-10 | Additive for hydraulic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31916898A JP3253282B2 (en) | 1998-11-10 | 1998-11-10 | Additive for hydraulic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000143315A JP2000143315A (en) | 2000-05-23 |
| JP3253282B2 true JP3253282B2 (en) | 2002-02-04 |
Family
ID=18107198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31916898A Expired - Fee Related JP3253282B2 (en) | 1998-11-10 | 1998-11-10 | Additive for hydraulic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3253282B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002114550A (en) * | 2000-10-06 | 2002-04-16 | Terunaito:Kk | Admixing agent for soil cement fluid and method for controlling the fluid |
| JP4562954B2 (en) * | 2001-06-20 | 2010-10-13 | 花王株式会社 | Additive for grout |
| EP1277710A1 (en) * | 2001-07-20 | 2003-01-22 | Dow Corning Corporation | Process for preparing a flowable slurry |
| JP4908184B2 (en) * | 2006-12-25 | 2012-04-04 | 日本化学工業株式会社 | Ground injection grout material and ground injection method |
| JP5820195B2 (en) * | 2011-08-30 | 2015-11-24 | 株式会社熊谷組 | Cementitious composition |
| JP2012077307A (en) * | 2011-11-18 | 2012-04-19 | Nippon Chem Ind Co Ltd | Grouting material for grouting, and grouting method |
| JP6869927B2 (en) * | 2018-08-01 | 2021-05-12 | 花王株式会社 | Dispersant composition for hydraulic composition |
-
1998
- 1998-11-10 JP JP31916898A patent/JP3253282B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000143315A (en) | 2000-05-23 |
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