JPH11116316A - Grouting material - Google Patents

Grouting material

Info

Publication number
JPH11116316A
JPH11116316A JP27692897A JP27692897A JPH11116316A JP H11116316 A JPH11116316 A JP H11116316A JP 27692897 A JP27692897 A JP 27692897A JP 27692897 A JP27692897 A JP 27692897A JP H11116316 A JPH11116316 A JP H11116316A
Authority
JP
Japan
Prior art keywords
weight
parts
hydroxide
pts
slag powder
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
Application number
JP27692897A
Other languages
Japanese (ja)
Other versions
JP3856541B2 (en
Inventor
Hideo Ishida
秀朗 石田
Kenkichi Hirano
健吉 平野
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Priority to JP27692897A priority Critical patent/JP3856541B2/en
Publication of JPH11116316A publication Critical patent/JPH11116316A/en
Application granted granted Critical
Publication of JP3856541B2 publication Critical patent/JP3856541B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials

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)
  • Working Measures On Existing Buildindgs (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a grouting material having good workability, free from the coagulation and consolidation of material and exhibiting excellent injection property and durability by compounding slag powder having the maximum particle diameter smaller than a specific level, an alkali metal carbonate, an alkaline earth metal, hydroxide and a dispersing agent at specific ratios. SOLUTION: This material contains 100 pts.wt. of slag powder having a maximum particle diameter of <=10 μm, 0.1-10 pts.wt. of an alkali metal carbonate, 0.1-10 pts.wt. of an alkaline earth metal hydroxide, 0.1-5 pts.wt. of a dispersing agent and preferably <=10 pts.wt. of gypsum. The slag powder is produced by quenching, crushing and classifying molten slag obtained as a byproduct of blast furnace and has a basicity (CaO+Al2 O3 +MgO/SiO2 ) (a measure of latent hydraulicity) of preferably >=1.4, especially >=1.7. An example of the alkali metal carbonate is sodium carbonate. The alkaline earth metal hydroxide is e.g. calcium hydroxide and magnesium hydroxide. The dispersing agent is e.g. ligninsulfonic acid or polycarboxylic acid salt-based dispersing agent.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、地盤強化や止水、
あるいは既存のコンクリートに発生した亀裂の補修等に
使用される注入材に関する。TECHNICAL FIELD The present invention relates to a method for strengthening the ground, stopping water,
Alternatively, the present invention relates to an injection material used for repairing a crack generated in existing concrete.

【０００２】[0002]

【従来の技術とその課題】従来より、注入材としては水
ガラスや微粉末セメントが使用されている。水ガラス
は、ナトリウムやシリカなど、その成分が徐々に溶出す
るために環境や耐久性に課題があり、微粉末セメントに
代わりつつあるのが現状である。この微粉末セメント
は、ポルトランドセメントと水砕スラグの微粉末で構成
されており、微粒子化したポルトランドセメントは空気
中の水分あるいは炭酸ガスとの反応により、凝集あるい
は場合によっては固結してしまい、水と混合しても粒子
同志が分散せず、注入性や強度が低下することがある。
そこで、凝集あるいは固結の原因となるポルトランドセ
メントを含まない、水砕スラグ微粉末と、アルミン酸ナ
トリウムや珪酸ナトリウムなどのアルカリ刺激剤とを組
み合わせた注入材が提案されている（特開平 4−293995
公報、特開平 7− 11624号公報）。しかしながら、この
注入材はアルカリ刺激剤が強アルカリ性のために作業者
がかぶれたり、肌荒れを起こすなどの課題があった。2. Description of the Related Art Conventionally, water glass or fine powder cement has been used as an injection material. Water glass has problems in the environment and durability because its components such as sodium and silica are gradually eluted, and is currently replacing fine powder cement. This fine powder cement is composed of fine powder of Portland cement and granulated slag, and the finely divided Portland cement is coagulated or possibly solidified by the reaction with moisture or carbon dioxide gas in the air, Even when mixed with water, the particles do not disperse, and the injectability and strength may decrease.
In view of this, an injection material has been proposed in which a granulated slag fine powder, which does not contain Portland cement causing coagulation or consolidation, is combined with an alkali stimulant such as sodium aluminate or sodium silicate (Japanese Patent Application Laid-Open No. 4-104). 293995
Gazette, JP-A-7-11624). However, this injection material has problems such as worker rash and rough skin due to the strong alkali stimulant.

【０００３】本発明は、作業性が良好で、材料の凝集や
固結が無く、注入性や耐久性に優れた注入材を提供する
ことを目的としている。[0003] An object of the present invention is to provide an injectable material which is excellent in workability, free of agglomeration and solidification of materials, and excellent in injectability and durability.

【０００４】[0004]

【課題を解決するための手段】即ち、本発明は、最大粒
径が10μｍ以下のスラグ粉末 100重量部、アルカリ金属
炭酸塩 0.1〜10重量部、アルカリ土類金属水酸化物 0.1
〜10重量部、及び分散剤 0.1〜５重量部を含有してなる
注入材であり、さらにこれらに、セッコウ10重量部以下
を含有してなる注入材である。That is, the present invention relates to a method for producing a slag powder having a maximum particle diameter of 10 μm or less, 100 parts by weight, an alkali metal carbonate 0.1 to 10 parts by weight, and an alkaline earth metal hydroxide 0.1.
注入 10 parts by weight and 0.1 to 5 parts by weight of a dispersing agent, and further contains 10 parts by weight or less of gypsum.

【０００５】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.

【０００６】本発明で使用するスラグ粉末とは、高炉か
ら副生する溶融スラグを急冷しガラス化したものを粉砕
又は粉砕・分級したものである。スラグ粉末の潜在水硬
性の度合いを表わす塩基度(CaO＋Al2O3 ＋MgO)／SiO
2は、本発明のスラグ粉末（以下本スラグ粉という）で
は、1.4 以上が好ましく、1.7 以上がより好ましい。ま
た、本スラグ粉のガラス化率は50％以上が好ましく、90
％以上がより好ましい。50％未満では硬化体の強度が極
めて小さくなる場合がある。本発明では、スラグ粉末の
最大粒径が10μｍ以下であることが必要である。本スラ
グ粉の粒径は、細かくかつ粒度分布の広がりが狭いもの
ほど注入性が優れており、６μｍ以下であることがより
好ましい。10μを越えると注入性が悪化し、所定の範囲
に注入施工ができないことがある。本スラグ粉の粒径
は、市販のレーザー回折式粒度分布計等で測定すること
ができる。The slag powder used in the present invention is obtained by rapidly cooling and vitrifying molten slag produced as a by-product from a blast furnace, or pulverizing or pulverizing and classifying. Basicity (CaO + Al 2 O 3 + MgO) / SiO indicating the degree of latent hydraulicity of slag powder
2 is preferably 1.4 or more, more preferably 1.7 or more, in the slag powder of the present invention (hereinafter referred to as the present slag powder). Further, the vitrification ratio of the present slag powder is preferably 50% or more, and 90% or more.
% Or more is more preferable. If it is less than 50%, the strength of the cured product may be extremely low. In the present invention, the maximum particle size of the slag powder needs to be 10 μm or less. Regarding the particle size of the present slag powder, the finer the particle size and the narrower the distribution of the particle size distribution, the better the injectability, and more preferably 6 μm or less. If it exceeds 10 μm, the injectability deteriorates, and it may not be possible to perform the injection in a predetermined range. The particle size of the present slag powder can be measured by a commercially available laser diffraction type particle size distribution meter or the like.

【０００７】本発明で使用するアルカリ金属炭酸塩（以
下アルカリ塩という）としては、炭酸ナトリウム、炭酸
カリウム、及び炭酸リチウム等が挙げられる。アルカリ
塩の使用量は、本スラグ粉 100重量部に対して、0.1 〜
10重量部が好ましく、１〜５重量部がより好ましい。0.
1 重量部未満では注入後の硬化体の強度が極めて小さく
なる場合があり、10重量部を越えると瞬結して作業性に
劣る場合がある。The alkali metal carbonate (hereinafter referred to as alkali salt) used in the present invention includes sodium carbonate, potassium carbonate, lithium carbonate and the like. The amount of the alkali salt used is 0.1 to 100 parts by weight of the slag powder.
10 parts by weight is preferable, and 1 to 5 parts by weight is more preferable. 0.
If the amount is less than 1 part by weight, the strength of the cured product after the injection may be extremely low, and if it exceeds 10 parts by weight, it may be instantaneously formed and the workability may be poor.

【０００８】本発明で使用するアルカリ土類金属水酸化
物（以下アルカリ水酸化物という）としては、水酸化カ
ルシウムや水酸化マグネシウムなどが挙げられるが、特
に強度特性から水酸化カルシウムの使用が好ましい。ア
ルカリ水酸化物の使用量は、本スラグ粉 100重量部に対
して、0.1 〜10重量部が好ましく、１〜５重量部がより
好ましい。0.1 重量部未満では注入後の硬化体の強度が
極めて小さくなる場合があり、10重量部を越えると瞬結
して作業性に劣る場合がある。[0008] Examples of the alkaline earth metal hydroxide (hereinafter referred to as "alkali hydroxide") used in the present invention include calcium hydroxide and magnesium hydroxide, and the use of calcium hydroxide is particularly preferred from the viewpoint of strength properties. . The amount of the alkali hydroxide used is preferably 0.1 to 10 parts by weight, more preferably 1 to 5 parts by weight, based on 100 parts by weight of the present slag powder. If the amount is less than 0.1 part by weight, the strength of the cured product after the injection may be extremely low, and if it exceeds 10 parts by weight, it may be instantaneously formed and the workability may be poor.

【０００９】これらのアルカリ塩やアルカリ水酸化物
は、各々一種又は二種以上を使用しても良く、それらの
最大粒径は10μｍ以下であることが好ましい。One or more of these alkali salts and alkali hydroxides may be used, respectively, and their maximum particle size is preferably 10 μm or less.

【００１０】本発明で使用する分散剤としては、例え
ば、リグニンスルホン酸塩系、β−ナフタレンスルホン
酸塩系、メラミンスルホン酸塩系、及びポリカルボン酸
塩系等が挙げられ、これらのうちの一種又は二種以上が
使用可能である。特に、ポリカルボン酸塩を主成分とす
る分散剤の使用が最も好ましい。分散剤の使用量は、本
スラグ粉 100重量部に対して、固形分として0.1 〜５重
量部が好ましく、0.5 〜３重量部がより好ましい。0.1
重量部未満では粘度が高く注入性に劣る場合があり、５
重量部を越えると凝結が遅れ強度が低下する場合があ
る。The dispersants used in the present invention include, for example, lignin sulfonate, β-naphthalene sulfonate, melamine sulfonate, polycarboxylate and the like. One or more can be used. In particular, it is most preferable to use a dispersant containing a polycarboxylate as a main component. The amount of the dispersant to be used is preferably 0.1 to 5 parts by weight, more preferably 0.5 to 3 parts by weight, as solids based on 100 parts by weight of the present slag powder. 0.1
If the amount is less than 5 parts by weight, the viscosity may be high and the injectability may be poor.
If the amount is more than the weight part, the setting may be delayed and the strength may be reduced.

【００１１】本発明で使用するセッコウとしては、二
水、半水、II型無水、及びIII 型無水セッコウが挙げら
れ、天然産のものや、リン酸やフッ酸セッコウなどの化
学セッコウ又はこれらを熱処理して得られたものなどが
使用可能であり、これらのうち、収縮低減性の面からII
型無水セッコウの使用が特に好ましい。セッコウの最大
粒径は10μｍ以下であることが好ましい。セッコウの使
用量は、本スラグ粉 100重量部に対して、10重量部以下
が好ましく、0.5 〜３重量部がより好ましい。セッコウ
を添加することにより水和による収縮量が減少するが、
10重量部を越えると材齢１日の強度が極端に低下する場
合がある。Examples of the gypsum used in the present invention include dihydrate, hemihydrate, type II anhydrous and type III anhydrous gypsum. Natural gypsum, chemical gypsum such as phosphoric acid and hydrofluoric acid gypsum, or a mixture thereof may be used. Those obtained by heat treatment can be used. Of these, from the viewpoint of shrinkage reduction II
The use of anhydrous gypsum is particularly preferred. The maximum particle size of the gypsum is preferably 10 μm or less. The amount of gypsum used is preferably 10 parts by weight or less, more preferably 0.5 to 3 parts by weight, based on 100 parts by weight of the present slag powder. The addition of gypsum reduces the amount of shrinkage due to hydration,
If it exceeds 10 parts by weight, the strength of one day of age may be extremely reduced.

【００１２】本発明のアルカリ塩、アルカリ水酸化物、
及び分散剤は、液状又は粉状どちらでも使用可能であ
り、これらの併用も可能である。An alkali salt, an alkali hydroxide,
The dispersant and the dispersant can be used either in liquid or powder form, and these can be used in combination.

【００１３】これらの混合方法としては、1)あらかじめ
粉体で混合する方法、2)使用時に粉体で混合する方法、
3)アルカリ塩、アルカリ水酸化物、セッコウ、及び分散
剤をあらかじめ水に溶解又は分散しておいて使用時に本
スラグ粉と混合する方法、4)アルカリ塩、アルカリ水酸
化物、セッコウ、及び分散剤をあらかじめ水に溶解又は
分散しておいて、さらに本スラグ粉を水に分散して使用
時に両者を混合する方法、並びに、5)溶解度の高いアル
カリ塩や分散剤を水溶液とし、使用時に本スラグ粉、ア
ルカリ水酸化物、及びセッコウを混合する方法等、いず
れでもよい。These mixing methods include: 1) a method of previously mixing with powder, 2) a method of mixing with powder at the time of use,
3) a method of dissolving or dispersing an alkali salt, an alkali hydroxide, gypsum, and a dispersant in water in advance and mixing with the slag powder at the time of use, 4) an alkali salt, an alkali hydroxide, gypsum, and dispersion Dissolving or dispersing the slag powder in water beforehand, and further dispersing the slag powder in water to mix both at the time of use, and 5) preparing an aqueous solution of a highly soluble alkali salt or dispersant, Any method, such as a method of mixing slag powder, alkali hydroxide, and gypsum, may be used.

【００１４】本発明の注入材を水と混練するに当たって
は、通常のモルタルミキサー、グラウトミキサー、及び
２段式ミキサー等を用いて、注入材と水とを混練した
後、ピストンポンプやスクイズポンプなどのグラウトポ
ンプ等により注入する。水の使用量は、注入材 100重量
部に対して、50〜1,000 重量部が好ましい。50重量部未
満では粘度が高く、注入性に劣り、1,000 重量部を越え
ると強度が低下する場合がある。In kneading the injection material of the present invention with water, the injection material and water are kneaded using a conventional mortar mixer, grout mixer, two-stage mixer, or the like, and then a piston pump or a squeeze pump is used. Using a grout pump or the like. The amount of water used is preferably 50 to 1,000 parts by weight based on 100 parts by weight of the injection material. If the amount is less than 50 parts by weight, the viscosity is high and the injectability is poor. If the amount exceeds 1,000 parts by weight, the strength may be reduced.

【００１５】さらに、必要に応じて、例えば、アルミ粉
等の発泡剤、例えば、界面活性剤系、樹脂石鹸系、及び
たんぱく系等の気泡剤、例えば、生石灰系、カルシウム
サルホアルミネート系、及びマグネシア系等の膨張材、
例えば、ベントナイト等のブリージング低減剤、並び
に、例えば、セルロース系やアクリル系などの増粘剤等
を配合することも可能である。Further, if necessary, a foaming agent such as aluminum powder, for example, a foaming agent such as a surfactant, a resin soap, and a protein, such as quicklime, calcium sulfoaluminate, and the like. Magnesia-based expansion materials,
For example, a breathing reducing agent such as bentonite and a thickening agent such as a cellulose-based or acrylic-based agent can be added.

【００１６】[0016]

【実施例】以下、本発明の実施例を示し、本発明をさら
に説明するが、本発明はこれらに限定されるものではな
い。The present invention will be further described below with reference to examples of the present invention, but the present invention is not limited to these examples.

【００１７】実施例１ 高炉水砕スラグをボールミルで粉砕し、その粉砕品を細
川ミクロン社製スーパーミクロン分級機により分級し、
粒度の異なるスラグ粉末を得た。このスラグ粉末 100重
量部、アルカリ塩Ａ２重量部、アルカリ水酸化物ａ２重
量部、及び分散剤イ１重量部を混合して注入材を得た。
地盤工学会基準(JGS T 831-1990)に準じた注入試験装置
を作製し、φ５cm×20cmのモールドに透水係数＝1.1 ×
10-3cm/secの新潟県姫川産砂を突き固め、下部より徐々
に水を注入し、砂の空隙部分を水で充填した。注入材 1
00重量部と水 200重量部とを混合して、注入材スラリー
を得て、モールド下部より注入圧1.0kgf/cm2で注入し
た。注入材スラリーの置換時間、材齢１、28日の硬化体
の圧縮強度を測定した。結果を表１に示す。なお、セッ
コウを配合して同様に実験を行った。結果を表１に併記
する。Example 1 Granulated blast furnace slag was ground with a ball mill, and the ground product was classified with a Supermicron classifier manufactured by Hosokawa Micron Co., Ltd.
Slag powders with different particle sizes were obtained. 100 parts by weight of this slag powder, 2 parts by weight of alkali salt A, 2 parts by weight of alkali hydroxide a, and 1 part by weight of dispersant a were mixed to obtain an injection material.
Injection test equipment based on the Japanese Geotechnical Society standard (JGS T831-1990) was prepared, and the permeability coefficient was 1.1 × in a mold of φ5cm × 20cm.
Sand from Himekawa, Niigata prefecture, at 10 -3 cm / sec was compacted, water was slowly injected from the lower part, and the voids of the sand were filled with water. Injection material 1
00 parts by weight and 200 parts by weight of water were mixed to obtain an injection material slurry, which was injected from the lower part of the mold at an injection pressure of 1.0 kgf / cm 2 . The replacement time of the injection material slurry and the compressive strength of the cured product at the material ages of 1 and 28 days were measured. Table 1 shows the results. In addition, it experimented similarly by mix | blending gypsum. The results are also shown in Table 1.

【００１８】＜使用材料＞ 高炉水砕スラグ：川崎製鉄社製、塩基度2.03、ガラス化
率96％ アルカリ塩Ａ：炭酸ナトリウム、試薬１級品 アルカリ水酸化物ａ：消石灰、試薬１級品の最大粒径10
μｍ以下粉砕分級品 セッコウα：II型無水セッコウ、トーケム社の最大粒径
10μｍ以下粉砕分級品 分散剤イ ：ポリカルボン酸塩系分散剤、粉末<Materials> Granulated blast furnace slag: manufactured by Kawasaki Steel Corporation, basicity: 2.03, vitrification rate: 96% Alkaline salt A: sodium carbonate, first grade reagent Alkali hydroxide a: slaked lime, first grade reagent Maximum particle size 10
Pulverized and classified products of μm or less Gypsum α: Type II anhydrous gypsum, Tochem's maximum particle size
10 μm or less pulverized and classified product Dispersant A: Polycarboxylate-based dispersant, powder

【００１９】＜測定方法＞ 最大粒径 ：島津製作所社製レーザー回折粒度分布計
「SALD−1100」で測定 置換時間 ：突き固めた砂の層の空隙容積分の水が全て
注入材スラリーで置換するのに要する時間。注入材スラ
リーを注入し始めてから砂の層から注入材スラリーが流
出し始めるまでの時間 圧縮強度 ：モールド上部からφ５cm×10cmの供試体を
切り出してJGS T 831-1990に準じて養生し、JIS R 1108
に準じて圧縮強度を測定した。<Measurement method> Maximum particle size: Measured with a laser diffraction particle size distribution analyzer “SALD-1100” manufactured by Shimadzu Corporation Replacement time: All water in the void volume of the compacted sand layer is replaced with the filler slurry. Time it takes. The time from the start of the injection of the injection material slurry to the start of the flow of the injection material slurry from the sand layer. Compressive strength: A specimen of φ5 cm × 10 cm is cut out from the upper part of the mold and cured according to JGS T831-1990. 1108
The compressive strength was measured according to the above.

【００２０】[0020]

【表１】 [Table 1]

【００２１】実施例２ 最大粒径６μｍの本スラグ粉 100重量部、表２に示すア
ルカリ塩２重量部、アルカリ水酸化物２重量部、セッコ
ウ１重量部、及び分散剤１重量部を添加混合して注入材
を調製し、この注入材 100重量部と水 200重量部とを混
合して、注入材スラリーを得た。この注入材スラリーを
用いた硬化体の材齢１と28日の硬化体の圧縮強度を測定
した。結果を表２に示す。 ＜使用材料＞ アルカリ塩Ｂ：炭酸カリウム、試薬１級品の最大粒径10
μｍ以下粉砕分級品 アルカリ水酸化物ｂ：水酸化マグネシウム、試薬１級品
の最大粒径10μｍ以下粉砕分級品 セッコウβ：二水セッコウ、試薬１級品の最大粒径10μ
ｍ以下粉砕分級品 分散剤 ロ：メラミンスルホン酸塩系分散剤、粉末Example 2 100 parts by weight of the present slag powder having a maximum particle size of 6 μm, 2 parts by weight of an alkali salt shown in Table 2, 2 parts by weight of an alkali hydroxide, 1 part by weight of gypsum, and 1 part by weight of a dispersant were added and mixed. Thus, an injection material was prepared, and 100 parts by weight of the injection material and 200 parts by weight of water were mixed to obtain an injection material slurry. The compressive strength of the cured bodies of the cured bodies using the injection material slurry of 1 and 28 days of age was measured. Table 2 shows the results. <Materials> Alkaline salt B: Potassium carbonate, maximum particle size of first grade reagent 10
Alkali hydroxide b: Magnesium hydroxide, maximum particle size of reagent 1st grade 10μm or less Gypsum β: Gypsum dihydrate, maximum particle size 10μ of reagent 1st grade
m or less crushed and classified product Dispersant b: Melamine sulfonate-based dispersant, powder

【００２２】＜測定方法＞ 圧縮強度 ：４×４×16cmのモールドに注入材スラリー
を流し込み、１日後に脱型し、JIS R 5201に準じて材齢
１日の圧縮強度を、また、脱型後の供試体を20℃水中養
生し、供試体作製から28日後に測定した。<Measurement Method> Compressive strength: The injection material slurry was poured into a mold of 4 × 4 × 16 cm, and the mold was released after one day. The compressive strength of one day of age was determined according to JIS R 5201. The test specimen was cured in water at 20 ° C. and measured 28 days after the preparation of the test specimen.

【００２３】[0023]

【表２】 [Table 2]

【００２４】実施例３ 最大粒径６μｍのスラグ粉末 100重量部、表３に示すア
ルカリ塩Ａとアルカリ水酸化物ａ、セッコウα１重量
部、及び分散剤イ１重量部を混合して、注入材を調製
し、この注入材 100重量部に対して、水を 300重量部を
混合して、注入材スラリーを得た。この注入材スラリー
を用いた硬化体の材齢１、28日の硬化体の圧縮強度を実
施例２と同様の方法で測定した。結果を表３に示す。Example 3 100 parts by weight of a slag powder having a maximum particle size of 6 μm, an alkali salt A and an alkali hydroxide a shown in Table 3, 1 part by weight of gypsum α, and 1 part by weight of a dispersant a were mixed. Was prepared, and 300 parts by weight of water was mixed with 100 parts by weight of the injection material to obtain an injection material slurry. The compressive strength of the cured material of the cured material using the injection material slurry of 1, 28 days old was measured in the same manner as in Example 2. Table 3 shows the results.

【００２５】[0025]

【表３】 [Table 3]

【００２６】実施例４ 最大粒径６μｍのスラグ粉末 100重量部、アルカリ塩Ａ
２重量部、アルカリ水酸化物ａ２重量部、表４に示すセ
ッコウα、及び分散剤イ１重量部を混合し注入材を調製
し、この注入材 100重量部に対して、水を 200重量部を
混合して、注入材スラリーを得た。この注入材スラリー
を用いた硬化体の材齢１、28日の硬化体の圧縮強度およ
びクラックの発生状況を測定した。結果を表４に併記す
る。 ＜測定方法＞ クラック発生の有無：材齢28日経過後の供試体を、温度
20℃、湿度60％RH下で、乾燥させ、７日後の供試体のク
ラック発生状況を目視にて確認した。Example 4 100 parts by weight of slag powder having a maximum particle size of 6 μm, alkali salt A
2 parts by weight of alkali hydroxide a, 2 parts by weight of alkali hydroxide a, gypsum α shown in Table 4 and 1 part by weight of dispersant a were mixed to prepare an injection material, and 200 parts by weight of water was added to 100 parts by weight of the injection material. Was mixed to obtain an injection material slurry. The compressive strength and the state of occurrence of cracks of the cured body of the cured body using the injection material slurry of 1, 28 days old were measured. The results are also shown in Table 4. <Measurement method> Presence or absence of cracks: The specimens after 28 days of age were subjected to temperature
The sample was dried at 20 ° C. and a humidity of 60% RH, and the state of occurrence of cracks in the test sample after 7 days was visually checked.

【００２７】[0027]

【表４】 [Table 4]

【００２８】実施例５ 最大粒径３μｍのスラグ粉末 100重量部、アルカリ塩Ａ
２重量部、アルカリ水酸化物ａ２重量部、セッコウα１
重量部、及び表５に示す分散剤イを混合し注入材を作製
し、この注入材 100重量部に対し、表５に示す水を混合
し、注入材スラリーを得た。この注入材スラリーの置換
時間と材齢１、28日の硬化体の圧縮強度を測定した。結
果を表５に併記する。Example 5 100 parts by weight of slag powder having a maximum particle size of 3 μm, alkali salt A
2 parts by weight, alkali hydroxide a2 parts by weight, gypsum α1
Parts by weight and a dispersant a shown in Table 5 were mixed to prepare an injection material, and water shown in Table 5 was mixed with 100 parts by weight of the injection material to obtain an injection material slurry. The replacement time of the injection material slurry and the compressive strength of the cured product at the material ages of 1 and 28 days were measured. The results are also shown in Table 5.

【００２９】[0029]

【表５】 [Table 5]

【００３０】[0030]

【発明の効果】本発明の注入材は、作業性がよい、
浸透性がよい、圧縮強度が高い、及び収縮によるク
ラックの発生がないので、従来の注入材と同様に、地盤
強化や止水、あるいは既存のコンクリートに発生した亀
裂の補修等に使用することができるうえ、従来の注入材
とは異なり、酸性の強い土壌や構造物、温泉水にさらさ
れる箇所、並びに、高温蒸気にさらされる箇所等に注入
しても、長期にわたり高い耐久性が保たれる。また、人
体や環境に対する有害成分を含まないため安全性が高い
などの効果を奏する。The injection material of the present invention has good workability.
Since it has good permeability, high compressive strength, and no cracks due to shrinkage, it can be used for strengthening the ground, stopping water, or repairing cracks that have occurred in existing concrete, as with conventional injection materials. In addition, unlike conventional injection materials, high durability is maintained for a long time even when injected into highly acidic soils and structures, locations exposed to hot spring water, and locations exposed to high-temperature steam. . In addition, since it does not contain harmful components to the human body and the environment, it has effects such as high safety.

フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０４Ｂ 22:06 22:10） 111:70 Ｃ０９Ｋ 103:00 Continued on the front page (51) Int.Cl. 6 Identification code FI C04B 22:06 22:10) 111: 70 C09K 103: 00

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 最大粒径が10μｍ以下のスラグ粉末 100
重量部、アルカリ金属炭酸塩 0.1〜10重量部、アルカリ
土類金属水酸化物 0.1〜10重量部、及び分散剤 0.1〜５
重量部を含有してなる注入材。1. A slag powder having a maximum particle size of 10 μm or less.
Parts by weight, alkali metal carbonate 0.1 to 10 parts by weight, alkaline earth metal hydroxide 0.1 to 10 parts by weight, and dispersant 0.1 to 5
Injectable material containing parts by weight. 【請求項２】 最大粒径が10μｍ以下のスラグ粉末 100
重量部、アルカリ金属炭酸塩 0.1〜10重量部、アルカリ
土類金属水酸化物 0.1〜10重量部、分散剤 0.1〜５重量
部、及びセッコウ10重量部以下を含有してなる注入材。2. A slag powder having a maximum particle size of 10 μm or less.
Injectable material containing 0.1 parts by weight of alkali metal carbonate, 0.1 to 10 parts by weight of alkaline earth metal hydroxide, 0.1 to 5 parts by weight of dispersant, and 10 parts by weight or less of gypsum.
JP27692897A 1997-10-09 1997-10-09 Injection material Expired - Fee Related JP3856541B2 (en)

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JPH11116316A true JPH11116316A (en) 1999-04-27
JP3856541B2 JP3856541B2 (en) 2006-12-13

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001302324A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plastic grout
JP2005097413A (en) * 2003-09-25 2005-04-14 Mitsui Kagaku Sanshi Kk Method for preparing suspension type soil stabilizer
JP2005281586A (en) * 2004-03-30 2005-10-13 Sumitomo Osaka Cement Co Ltd Two-part injection material and method for manufacturing the same
JP2005344078A (en) * 2004-06-07 2005-12-15 Mitsui Kagaku Sanshi Kk Suspension type soil stabilizer and method for producing the same
KR100702417B1 (en) 2006-03-31 2007-04-02 전북대학교산학협력단 Composition of inorganic binder for grouting materials and manufacturing method thereby
JP2008255360A (en) * 2008-05-20 2008-10-23 Chiyoda Ute Co Ltd Soil modifying material and soil improving method
US7717998B2 (en) 2006-02-07 2010-05-18 Nittetsu Cement Co., Ltd. Ultrafine particle grouting composition
JP2010215865A (en) * 2009-03-18 2010-09-30 Denki Kagaku Kogyo Kk Injection material and injection method
JP2013517202A (en) * 2010-01-13 2013-05-16 インダストリー ファウンデーション オブ チョンナム ナショナル ユニバーシティ Cement-free alkali-active binder containing composite alkali activator, mortar or concrete using the same
JP5398096B1 (en) * 2013-05-29 2014-01-29 有限会社シモダ技術研究所 Permeable fine grain grout material
US20210340065A1 (en) * 2018-10-02 2021-11-04 Sika Technology Ag Activation of ground granulated blast furnace slag

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001302324A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plastic grout
JP2005097413A (en) * 2003-09-25 2005-04-14 Mitsui Kagaku Sanshi Kk Method for preparing suspension type soil stabilizer
JP2005281586A (en) * 2004-03-30 2005-10-13 Sumitomo Osaka Cement Co Ltd Two-part injection material and method for manufacturing the same
JP2005344078A (en) * 2004-06-07 2005-12-15 Mitsui Kagaku Sanshi Kk Suspension type soil stabilizer and method for producing the same
JP4627153B2 (en) * 2004-06-07 2011-02-09 三井化学産資株式会社 Suspension type ground improvement material and manufacturing method thereof
US7717998B2 (en) 2006-02-07 2010-05-18 Nittetsu Cement Co., Ltd. Ultrafine particle grouting composition
KR100702417B1 (en) 2006-03-31 2007-04-02 전북대학교산학협력단 Composition of inorganic binder for grouting materials and manufacturing method thereby
JP2008255360A (en) * 2008-05-20 2008-10-23 Chiyoda Ute Co Ltd Soil modifying material and soil improving method
JP2010215865A (en) * 2009-03-18 2010-09-30 Denki Kagaku Kogyo Kk Injection material and injection method
JP2013517202A (en) * 2010-01-13 2013-05-16 インダストリー ファウンデーション オブ チョンナム ナショナル ユニバーシティ Cement-free alkali-active binder containing composite alkali activator, mortar or concrete using the same
JP5398096B1 (en) * 2013-05-29 2014-01-29 有限会社シモダ技術研究所 Permeable fine grain grout material
US20210340065A1 (en) * 2018-10-02 2021-11-04 Sika Technology Ag Activation of ground granulated blast furnace slag

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