JP3435122B2 - Plastic injection material - Google Patents
Plastic injection materialInfo
- Publication number
- JP3435122B2 JP3435122B2 JP2000159098A JP2000159098A JP3435122B2 JP 3435122 B2 JP3435122 B2 JP 3435122B2 JP 2000159098 A JP2000159098 A JP 2000159098A JP 2000159098 A JP2000159098 A JP 2000159098A JP 3435122 B2 JP3435122 B2 JP 3435122B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- injection material
- plastic injection
- plasticizing
- plasticizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
-
- 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
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
-
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、硬化液であるセメ
ントミルクと可塑化液とを混合することによって得られ
る可塑性注入材に係り、特に長距離圧送を行うことがで
きる可塑性注入材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic injection material obtained by mixing a hardening liquid, cement milk, and a plasticizing liquid, and more particularly to a plastic injection material capable of long-distance pumping.
【０００２】[0002]
【従来の技術】本出願の発明者等は、土木構造物の空洞
充填、軽量盛土、及び埋立等に使用する注入材として、
セメントミルク（硬化液：Ａ液）と、ベントナイトを水
に混濁したベントナイトミルク（可塑化液：Ｂ液）と、
を混合攪拌して得られる可塑性注入材を提案している
（特開平１１−３１０７７９号参照）。2. Description of the Related Art The inventors of the present application, as an injection material used for cavity filling of civil engineering structures, lightweight embankment, landfill, etc.
Cement milk (hardening liquid: liquid A), bentonite milk in which bentonite is turbid in water (plasticizing liquid: liquid B),
A plastic injection material obtained by mixing and stirring is proposed (see Japanese Patent Application Laid-Open No. 11-310779).
【０００３】また、本願出願人は可塑化液を調整するに
あたって、上記発明の可塑化材のベントナイトに換えて
メタカオリンやアタパルジャイトを使用することが有効
であることを見出し、提案している（特願平11−２２６
７５４号参照）。Further, the applicant of the present application has found and proposed that it is effective to use metakaolin or attapulgite in place of bentonite which is the plasticizing material of the present invention in adjusting the plasticizing liquid (Japanese Patent Application No. 2000-242242). Flat 11-226
754).
【０００４】いずれの発明においても、可塑性注入材の
可塑性を良好なものとするためには、高濃度の可塑化液
（Ｂ液）が必要となる。例えばアタパルジャイトを例に
すると、可塑化液の性状はフロー値約２００ｍｍ、粘度
９．０ｄＰａＳとなる。In any of the inventions, in order to improve the plasticity of the plastic injection material, a high-concentration plasticizing liquid (liquid B) is required. Taking attapulgite as an example, the plasticizing liquid has a flow value of about 200 mm and a viscosity of 9.0 dPaS.
【０００５】[0005]
【発明が解決しようとする課題】このように、従来の技
術における可塑化液は、粘性が高く、流動性に乏しいも
のとならざるをえない。この可塑化液を使用して通常の
設備で施工を行えば５００ｍが限度となる。即ち、長距
離の圧送には適さないという問題があった。これに対処
してポンプの能力を上げたり、中継ポンプを設けること
も考えられるが、ポンプの設置条件やコストを勘案する
と現実的ではない。As described above, the plasticizing liquid in the prior art is inevitably high in viscosity and poor in fluidity. If this plasticizing liquid is used to carry out construction in normal equipment, the maximum length is 500 m. That is, there is a problem that it is not suitable for long-distance pressure feeding. It is conceivable to increase the pump capacity or provide a relay pump in response to this, but it is not realistic considering the installation conditions and cost of the pump.
【０００６】また、所定距離までの圧送が可能な程度に
可塑化液の濃度を低下させると、硬化液（Ａ液）と混練
されたとき、可塑性注入材の可塑性状が著しく悪化する
他、可塑化液自体にブリーディングが生じるという問題
がある。Further, if the concentration of the plasticizing liquid is lowered to such an extent that it can be pumped to a predetermined distance, the plasticity of the plastic injection material is significantly deteriorated when it is kneaded with the hardening liquid (liquid A). There is a problem that bleeding occurs in the chemical liquid itself.
【０００７】そこで、本発明は、可塑性注入材の可塑性
状を低下させることなく、可塑化液の流動性を高い（粘
性を低い）ものとすることを目的とする。Therefore, an object of the present invention is to increase the fluidity (low viscosity) of the plasticizing liquid without lowering the plasticity of the plastic injection material.
【０００８】[0008]
【課題を解決するための手段】発明者は鋭意検討を行
い、リン酸塩を分散剤として微量でも添加すると可塑性
注入材の可塑性状を低下させることなく可塑化液（Ｂ
液）の流動性が劇的に向上することを見出した。Means for Solving the Problems The inventor has conducted diligent studies, and if a small amount of phosphate is added as a dispersant, the plasticizing liquid (B
It has been found that the fluidity of the liquid) is dramatically improved.
【０００９】請求項１に記載の発明は、アタパルジャイ
ト並びにメタカオリンから選ばれる1種以上の可塑化
材、リン酸塩系分散剤、及び水からなる可塑化液と、セ
メントミルクからなる硬化液とを攪拌混合して形成され
る可塑性注入材である。According to the first aspect of the invention, at least one plasticizer selected from attapulgite and metakaolin, a phosphate dispersant, and a plasticizer containing water, and a hardening liquid containing cement milk are used. It is a plastic injection material formed by stirring and mixing.
【００１０】請求項２に記載の発明は、請求項１に記載
の可塑性注入材において、前記可塑化材がアタパルジャ
イトであり、可塑化材１００重量部に対してリン酸塩系
分散剤が０．６〜１．２重量部である可塑性注入材であ
る。According to a second aspect of the invention, in the plastic injection material according to the first aspect, the plasticizer is attapulgite, and the phosphate dispersant is 0.1% by weight based on 100 parts by weight of the plasticizer. It is 6 to 1.2 parts by weight of a plastic injection material.
【００１１】請求項３に記載の発明は、請求項２に記載
の可塑性注入材において、前記硬化液と前記可塑化液と
の混合比が体積比で１：１〜1：８である可塑性注入材
である。According to a third aspect of the present invention, in the plastic injection material according to the second aspect, the mixing ratio of the hardening liquid and the plasticizing liquid is 1: 1 to 1: 8 by volume. It is a material.
【００１２】請求項４に記載の発明は、請求項１に記載
の可塑性注入材において、前記可塑化材がメタカオリン
であり、可塑化材１００重量部に対してリン酸塩系分散
剤が０．００５〜０．０３重量部である可塑性注入材で
ある。According to a fourth aspect of the present invention, in the plastic injection material according to the first aspect, the plasticizer is metakaolin, and the phosphate dispersant is 0.1% by weight based on 100 parts by weight of the plasticizer. It is a plastic injection material of 005 to 0.03 parts by weight.
【００１３】請求項５に記載の発明は、請求項４に記載
の可塑性注入材において、前記硬化液と前記可塑化液と
の混合比が体積比で１：１〜１：１１である可塑性注入
材である。According to a fifth aspect of the present invention, in the plastic injection material according to the fourth aspect, the mixing ratio of the hardening liquid and the plasticizing liquid is 1: 1 to 1:11 by volume. It is a material.
【００１４】本発明によれば、可塑化液に対してリン酸
塩を加えたことにより、可塑化液の流動性が極めて良好
になる。また、硬化液と混練されたときの注入材の可塑
性は、リン酸塩を加えたときに比べてほとんど変化しな
い。これらは、実験的に確かめられている。According to the present invention, the fluidity of the plasticizing liquid becomes extremely good by adding the phosphate to the plasticizing liquid. Further, the plasticity of the injection material when it is kneaded with the curing liquid is almost the same as when the phosphate is added. These have been confirmed experimentally.
【００１５】[0015]
【発明の実施の形態】本発明の可塑性注入材では、先ず
Ａ液としてセメントミルク（セメント、水、必要により
気泡、各種混和剤を配合）が調製され、これとは別にＢ
液として高濃度の懸濁液を（例えばアタパルジャイト、
水をフロー値約２００ｍｍ、粘度９．０ｄＰａＳとなる
ように）調整する。次にこのＢ液にリン酸塩類（ピロリ
ン酸ナトリウム、トリポリリン酸ナトリウム、テトラポ
リリン酸ナトリウム等）を可塑化材に対して１％(重量
％)添加する。これにより、Ｂ液の流動性は著しく向上
し、その圧送が容易となる(例えば５００ｍ以上)。また
Ａ液とＢ液とを混合したときの可塑性状は従来のものと
全く変わらない。BEST MODE FOR CARRYING OUT THE INVENTION In the plastic injecting material of the present invention, cement milk (cement, water, air bubbles, and various admixtures if necessary) is first prepared as a liquid A, and B is separately prepared.
As a liquid, a highly concentrated suspension (for example, attapulgite,
Adjust the water to a flow value of about 200 mm and a viscosity of 9.0 dPaS). Next, phosphates (sodium pyrophosphate, sodium tripolyphosphate, sodium tetrapolyphosphate, etc.) are added to this solution B in an amount of 1% (% by weight) with respect to the plasticizer. As a result, the fluidity of the liquid B is remarkably improved and the liquid is easily pumped (for example, 500 m or more). Further, the plasticity when the liquid A and the liquid B are mixed is no different from the conventional one.
【００１６】Ａ液に用いるセメントは、普通、早強、超
早強、白色、耐硫酸塩、中庸熱、低熱などの各種ポルト
ランドセメント、前記ポルトランドセメントの少なくと
も一種と高炉スラグ、フライアッシュなどの少なくとも
一種とを混合した混合セメント、ジェットセメント、ア
ルミナセメントなどの特殊セメント、及びセメント系固
化材から選ぶことができる。また、セメントミルクに対
して砂、レキ、発泡ビーズなどを混入して比重を調整す
るようにしてもよい。The cement used in the liquid A is usually various types of portland cement such as early strength, ultrafast strength, white color, sulfate resistance, moderate heat and low heat, at least one of the above portland cement and at least blast furnace slag and fly ash. It can be selected from mixed cement mixed with one kind, jet cement, special cement such as alumina cement, and cement-based solidifying material. Further, the specific gravity may be adjusted by mixing sand, rubs, foam beads or the like with the cement milk.
【００１７】セメントミルクは、必要に応じて起泡剤を
発泡処理した気泡を混合しセメントエアミルクとするこ
とができる。また、セメントミルクに砂、レキ、発泡ビ
ーズなどを混入して比重を調整するようにしてもよい。Cement milk can be made into cement air milk by mixing air bubbles obtained by foaming a foaming agent, if necessary. In addition, the specific gravity may be adjusted by mixing sand, gravel, foam beads and the like into the cement milk.
【００１８】Ａ液のセメントミルクには必要に応じて、
減水剤、遅延剤、分散剤などの混和剤を添加してもよ
く、混和剤の添加によっては練り上がり後の可塑性に影
響はない。また、減水剤の添加によりＡ液中の単位水量
を減らしたり、単位セメント量を増加することが可能な
ことより、高強度及び軽量化の配合設定の範囲拡大が可
能である。遅延剤の添加により輸送配管等の設備内部で
の硬化を防止して設備の洗浄を軽減することができる。
分散剤の添加によりＡ液の流動性が向上し、配管等によ
る輸送距離を延ばすことができる。If necessary, the liquid A cement milk contains
An admixture such as a water reducing agent, a retarder, or a dispersant may be added, and the addition of the admixture does not affect the plasticity after kneading. In addition, since it is possible to reduce the amount of unit water in the liquid A or increase the amount of unit cement in the liquid A by adding a water-reducing agent, it is possible to expand the range of formulation settings for high strength and light weight. By adding the retarder, it is possible to prevent the inside of the equipment such as the transportation pipe from being hardened and reduce the washing of the equipment.
By adding the dispersant, the fluidity of the liquid A is improved, and the transportation distance by piping or the like can be extended.
【００１９】本発明は、上記のように予め調製したＡ
液、Ｂ液をミルク状態として長距離をパイプで圧送して
瞬時に混合する。混合個所において、Ａ液のセメントミ
ルクは、水溶液がセメントから遊離されるカルシウムイ
オンで過飽和の懸濁状態であり、プラスのカルシウムイ
オンで満たされている。The present invention relates to A prepared in advance as described above.
Liquid and liquid B are made into a milk state and pressure-fed over a long distance with a pipe, and mixed instantaneously. At the mixing point, the liquid A cement milk is in a suspension state in which the aqueous solution is supersaturated with calcium ions released from the cement, and is filled with positive calcium ions.
【００２０】一方、Ｂ液は、マイナスイオンに帯電して
おり、このようなミルク同士の混合によって、可塑化材
粒子表面のマイナス荷電をカルシウムプラスイオンが中
和することにより、可塑化材粒子の分子間引力による急
激な凝集反応が発生し、瞬時に可塑化させることができ
る。On the other hand, the liquid B is charged with negative ions, and the calcium positive ions neutralize the negative charges on the surface of the plasticizing material particles by mixing such milks. A rapid agglutination reaction occurs due to the intermolecular attractive force, and it can be instantly plasticized.
【００２１】なお、本発明におけるＡ液、Ｂ液の混合割
合は、使用目的に応じて適宜決定されるものであるが、
可塑化材としてアタパルジャイトを用いたときは、Ａ
液：Ｂ液＝１：１〜１：８（体積比）、可塑化材として
メタカオリンを用いたときは、Ａ液：Ｂ液＝１：１〜
１：１１（体積比）の範囲が好ましい。Ｂ液の割合が前
記の範囲より少ない場合、可塑化性能が低くなり好まし
くない。また、Ｂ液の割合が前記の範囲より多い場合、
Ａ液とＢ液を均一に混合することが困難となり好ましく
ない。また、相対的にＡ液の量が少ないため単位セメン
ト量が少なくなるので好ましくない。The mixing ratio of the liquids A and B in the present invention is appropriately determined according to the purpose of use.
When using attapulgite as the plasticizer, A
Liquid: B liquid = 1: 1 to 1: 8 (volume ratio), when metakaolin is used as a plasticizer, A liquid: B liquid = 1: 1 to 1
The range of 1:11 (volume ratio) is preferable. When the proportion of the liquid B is less than the above range, the plasticizing performance is lowered, which is not preferable. Further, when the ratio of the liquid B is higher than the above range,
It is not preferable because it is difficult to uniformly mix the liquid A and the liquid B. Moreover, since the amount of the liquid A is relatively small, the amount of unit cement is small, which is not preferable.
【００２２】また、調製された可塑性注入材のフロー値
は日本道路公団規格試験法であるシリンダー法で８０
（自立）〜１５０mmが好ましく、８０〜１２０mmがより
好ましい。８０〜１２０mmでは可塑性注入材として最適
であるうえ、水中打設又は流水のある場所でも材料分離
が極めて少なく利用可能である。また、１２０〜１５０
mmでは流水等の影響を受けない場合、十分に可塑性注入
材として使用可能であるが、水中打設に使用の場合、濁
りや材料に亀裂が生じる可能性がある。１５０mm以上の
ものは通常のエアモルタル、エアミルクの流動性の性状
に近く、限定注入等には適さない。The flow value of the prepared plastic injection material is 80 by the cylinder method, which is a standard test method of Japan Highway Public Corporation.
(Independent) -150 mm is preferable, and 80-120 mm is more preferable. When it is 80 to 120 mm, it is most suitable as a plastic injection material, and it can be used with very little material separation even in a place where water is poured or where running water is present. Also, 120 to 150
mm can be sufficiently used as a plastic injection material when it is not affected by running water, etc. However, when used for underwater casting, turbidity or material cracks may occur. Those with a diameter of 150 mm or more are close to the fluidity of ordinary air mortar and air milk and are not suitable for limited injection.
【００２３】[0023]
【実施例】本発明に係る可塑性注入材を実施例により更
に説明する。以下の実施例において、注入材の調製方
法、試験材料、及び試験方法は次の通りである。EXAMPLES The plastic injection material according to the present invention will be further described with reference to examples. In the following examples, the method for preparing the injectable material, the test material, and the test method are as follows.
【００２４】（調製方法）Ａ液は、セメント系固化材と
水をハンドミキサーで２分間混練して調製した。気泡を
混合する場合は、さらに、所定の混入量となるように気
泡（起泡剤を水で２５倍希釈後、２５倍発泡させたも
の）を投入し、ミキサーで３０秒混合した。(Preparation Method) Liquid A was prepared by kneading the cement-based solidifying material and water with a hand mixer for 2 minutes. When bubbles were mixed, bubbles (a foaming agent was diluted 25-fold with water and then foamed 25-fold) were added to the mixture so that a predetermined amount was mixed, and the mixture was mixed for 30 seconds with a mixer.
【００２５】Ｂ液は、可塑化材と水を往復攪拌ミキサー
で５分間混練して調製した。Ａ液とＢ液の混合は、ハン
ドミキサーで１０〜１５秒程度混練して調製した。The liquid B was prepared by kneading the plasticizing material and water with a reciprocating stirring mixer for 5 minutes. The liquid A and the liquid B were mixed by kneading with a hand mixer for about 10 to 15 seconds.
【００２６】（試験材料）試験に使用した材料は以下の
通りである。
硬化材：住友大阪セメント（株）製セメント系固化材「タフロック」（商標）
可塑化材：アタパルジャイト
メタカオリン
（可塑化材は、いずれも２００メッシュふるい全通の粒径に調整したもの）
分散剤：ピロリン酸ナトリウム（１０水和物）等(Test Material) The materials used for the test are as follows. Hardening material: Sumitomo Osaka Cement Co., Ltd. cement-based solidifying material "Tough Rock" (trademark) Plasticizing material: attapulgite metakaolin (all plasticizing materials are adjusted to a 200 mesh sieve particle size) Dispersant: Sodium pyrophosphate (10 hydrate), etc.
【００２７】（試験方法）試験項目としてフロー値、２
４時間後のＢ液のブリーディング、粘度の測定を以下の
ような基準で行った。Ａ液とＢ液との混練後のフロー
値、これらに基づく総合的な判定(可塑性状)を行った。(Test method) Flow value as a test item, 2
After 4 hours, the bleeding of the liquid B and the measurement of the viscosity were performed according to the following criteria. The flow values after the kneading of the liquids A and B and the comprehensive judgment (plasticity) based on these were performed.
【００２８】フロー値は日本道路公団規格「エアモルタ
ル及びエアミルクの試験方法（ＪＨＳＡ３１３−１９９
２）」のコンシステンシー試験方法のシリンダー法によ
った。内径８cm高さ８cmのシリンダーに試料を入れ、引
き抜き後の試料の底面の直径を測定した。The flow value is based on the standard of Japan Highway Public Corporation "Test method for air mortar and air milk (JHSA313-199).
2) ”by the cylinder method of the consistency test method. The sample was placed in a cylinder having an inner diameter of 8 cm and a height of 8 cm, and the diameter of the bottom surface of the sample after withdrawal was measured.
【００２９】ブリーディングの測定は土木学会「プレパ
ックドコンクリートの注入モルタルのブリーディング率
および膨張率試験方法」（ＪＳＣＥ−Ｆ５２２−１９９
４）によった。粘度の測定はリネン社製ビスコテスター
（ＶＴ−０４）を用いて行った。The bleeding was measured by the Japan Society of Civil Engineers, "Bleeding rate and expansion rate test method for injected mortar of prepacked concrete" (JSCE-F522-199).
According to 4). The viscosity was measured using a Visco Tester (VT-04) manufactured by Linen.
【００３０】〔実施例１〕本例は、アタパルジャイトを
可塑化材として使用した場合を想定して行ったものであ
る。それぞれの配合及び試験結果を表１〜表５に示す。[Example 1] This example is performed assuming that attapulgite is used as a plasticizing material. The respective formulations and test results are shown in Tables 1 to 5.
【００３１】表１には、同一のＡ液（セメント系固化材
量３００ｋｇ/ｍ３、Ｗ/Ｃ＝０．５）に分散剤を添加し
ないで、アタパルジャイトミルク(Ｂ液)のフロー値をそ
れぞれ約２００、４００，６００ｍｍとなるように調整
して、２４時間後のＢ液のブリーディング及びＡ液と混
合した時の注入材（Ａ液＋Ｂ液）のフロー値を示してい
る。Table 1 shows the flow values of attapulgite milk (liquid B) without adding a dispersant to the same liquid A (cement solidifying material amount 300 kg / m 3 , W / C = 0.5). The flow values of the injection material (solution A + solution B) after bleeding of solution B after 24 hours and mixing with solution A are shown after adjusting to about 200, 400, and 600 mm.
【００３２】[0032]
【表１】 [Table 1]
【００３３】表１から、Ｂ液の濃度が低下するに従っ
て、ブリーディングが大きくなり注入材（Ａ液＋Ｂ液）
の可塑性状が低下する事が分かる。尚、可塑性状の判定
はＡ液とＢ液との混練後のフロー値が１２０ｍｍ以下の
ものを○とし、１２０ｍｍを超えるものを×としてい
る。From Table 1, the bleeding increases as the concentration of solution B decreases, and the injection material (solution A + solution B) increases.
It can be seen that the plasticity of is decreased. In addition, the plasticity is judged as ◯ when the flow value of the liquid A and liquid B after kneading is 120 mm or less, and as x when the flow value exceeds 120 mm.
【００３４】表２はアタパルジャイトミルク（分散剤未
添加時のフロー値２００ｍｍ）に分散剤（ピロリン酸ナ
トリウム（１０水和物））を添加するのに、その順序と
して、
水にまずアタパルジャイトを混入してから分散剤を添
加して混練する。
予め水に分散剤を混入して、この水にアタパルジャイ
トを添加して混練する。
という場合に注入材のフロー値に変化が生じるかを検証
したものである。Table 2 shows that the dispersant (sodium pyrophosphate (10 hydrate)) was added to attapulgite milk (flow value 200 mm when the dispersant was not added). Then add the dispersant and knead. A dispersant is mixed in water in advance, and attapulgite is added to this water and kneaded. In this case, it is verified whether the flow value of the injection material changes.
【００３５】[0035]
【表２】 [Table 2]
【００３６】表２より、水への分散剤の添加は、可塑化
材(アタパルジャイト)の添加の前後を問わず同程度と判
断される。そこで、以降の試験は水に予め分散剤を添加
して行うこととした。From Table 2, it is judged that the addition of the dispersant to water is almost the same before and after the addition of the plasticizer (attapulgite). Therefore, the subsequent tests were carried out by adding a dispersant to water in advance.
【００３７】表３は可塑化材であるアタパルジャイトの
量を一定とし、これに対して、分散剤（ピロリン酸ナト
リウム（１０水和物））の添加量を変化させた場合のＢ
液の粘度及びブリーディング率を判定したものである。Table 3 shows that when the amount of attapulgite, which is a plasticizer, is fixed, the amount of dispersant (sodium pyrophosphate (10 hydrate)) added is changed.
The viscosity of the liquid and the bleeding rate were evaluated.
【００３８】[0038]
【表３】 [Table 3]
【００３９】表３より、アタパルジャイトを可塑化材と
したときに、ピロリン酸ナトリウム(１０水和物)の添加
量は、可塑化材１００重量部に対して０．６〜１．２重
量部が適当であることが分かる。０．６重量部以下であ
れば、良好な流動性は得られないし、1．２重量部を超
えると沈降分離を生じる。From Table 3, when attapulgite is used as the plasticizer, the amount of sodium pyrophosphate (10 hydrate) added is 0.6 to 1.2 parts by weight per 100 parts by weight of the plasticizer. It turns out to be suitable. If it is 0.6 parts by weight or less, good fluidity cannot be obtained, and if it exceeds 1.2 parts by weight, sedimentation occurs.
【００４０】表４は、Ａ液とＢ液との配合比率を変化さ
せたときの可塑性注入材の判定を行ったものである。本
例ではＡ液とＢ液とを体積比で1：9から1：0．5まで変
化させている。Table 4 shows the determination of the plastic injection material when the mixing ratio of the liquid A and the liquid B was changed. In this example, the liquid A and the liquid B are changed in volume ratio from 1: 9 to 1: 0.5.
【００４１】[0041]
【表４】 [Table 4]
【００４２】表４よりＡ液とＢ液との配合比率は体積比
で１：１〜１：８の範囲が適当であることが分かる。Ｂ
液の割合が０．５以下であれば良好な可塑化性能が得ら
れず、９以上であればＡ液とＢ液を均一に混合すること
が困難である。From Table 4, it is understood that the mixing ratio of the liquid A and the liquid B is appropriately in the range of 1: 1 to 1: 8 by volume ratio. B
If the ratio of the liquid is 0.5 or less, good plasticizing performance cannot be obtained, and if it is 9 or more, it is difficult to uniformly mix the liquid A and the liquid B.
【００４３】表５は様々な有機酸が分散剤として機能す
るかを調べたものである。リン酸塩類以外については有
効ではない。Table 5 shows whether various organic acids function as dispersants. It is not effective except for phosphates.
【００４４】[0044]
【表５】 [Table 5]
【００４５】〔実施例２〕本例は、メタカオリンを可塑
化材として使用した場合を想定して行ったものである。
それぞれの配合及び試験結果を表６〜表８に示す。[Example 2] This example is carried out on the assumption that metakaolin is used as a plasticizer.
The respective formulations and test results are shown in Tables 6 to 8.
【００４６】表６は可塑化材であるメタカオリンの量を
一定とし、これに対して、分散剤（ピロリン酸ナトリウ
ム（１０水和物））の添加量を変化させた場合のＢ液の
粘度及びブリーディング率を判定したものである。In Table 6, the amount of metakaolin as a plasticizing agent was kept constant and the viscosity of solution B when the amount of dispersant (sodium pyrophosphate (10 hydrate)) was changed and The bleeding rate is determined.
【００４７】[0047]
【表６】 [Table 6]
【００４８】表６より、メタカオリンを可塑化材とした
ときに、ピロリン酸ナトリウム(１０水和物)の添加量
は、可塑化材１００重量部に対して、０．００５〜０．
０３重量部が適当であることが分かる。０．００５重量
部以下であれば、良好な流動性は得られないし、０．０
３重量部を超えると沈降分離を生じる。From Table 6, when metakaolin is used as the plasticizer, the addition amount of sodium pyrophosphate (10 hydrate) is 0.005 to 0.
It turns out that 03 parts by weight are suitable. If it is 0.005 parts by weight or less, good fluidity cannot be obtained, and 0.0
If it exceeds 3 parts by weight, settling separation occurs.
【００４９】表７は、Ａ液とＢ液との配合比率を変化さ
せたときの可塑性注入材の判定を行ったものである。本
例ではＡ液とＢ液とを体積比で1：１２から1：0．5まで
変化させている。Table 7 shows the determination of the plastic injection material when the mixing ratio of the liquid A and the liquid B was changed. In this example, the A liquid and the B liquid are changed in volume ratio from 1:12 to 1: 0.5.
【００５０】[0050]
【表７】 [Table 7]
【００５１】表７よりＡ液とＢ液の配合比率は体積比で
１：１〜１：１１の範囲が適当であることが分かる。Ｂ
液の割合が０．５以下であれば良好な可塑化性能が得ら
れない。Ｂ液の割合が１２の場合は注入材の可塑性状は
良好であるものの、セメント系固化材の量が１００ｋｇ
/ｍ３未満となり硬化体の強度を考慮した場合に実用的
でない。From Table 7, it is understood that the mixing ratio of the liquid A and the liquid B is appropriately in the range of 1: 1 to 1:11 by volume. B
If the ratio of the liquid is 0.5 or less, good plasticizing performance cannot be obtained. When the ratio of liquid B is 12, the plasticity of the injection material is good, but the amount of cement-based solidifying material is 100 kg.
It becomes less than / m 3 and is not practical when the strength of the cured product is taken into consideration.
【００５２】表８は様々な有機酸が、メタカオリンに対
して分散剤として機能するかを調べたものである。リン
酸塩類以外については有効ではない。Table 8 examines whether various organic acids function as dispersants for metakaolin. It is not effective except for phosphates.
【００５３】[0053]
【表８】 [Table 8]
【００５４】[0054]
【発明の効果】以上述べたように、本発明によれば、可
塑性注入材の可塑性状を低下させることなく、可塑化液
の流動性を高い（粘性を低い）ものとすることができ、
長距離の搬送を実施することができるという効果を奏す
る。As described above, according to the present invention, the fluidity of the plasticizing liquid can be made high (the viscosity is low) without deteriorating the plasticity of the plastic injection material,
This has the effect of being able to carry a long distance.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｅ２１Ｄ 11/00 Ｅ２１Ｄ 11/00 Ａ //(Ｃ０４Ｂ 28/02 Ｃ０４Ｂ 14:10 Ｂ 14:10 Ｚ 22:16 Ｚ 22:16） 111:70 111:70 Ｃ０９Ｋ 103:00 Ｃ０９Ｋ 103:00 (56)参考文献 特開 平11−310779（ＪＰ，Ａ) 特開 平７−247543（ＪＰ，Ａ) 特開 昭64−80620（ＪＰ，Ａ) 特開 平11−35361（ＪＰ，Ａ) 特開 昭62−91453（ＪＰ，Ａ) 特開 平10−95976（ＪＰ，Ａ) 特開 平５−43875（ＪＰ，Ａ) 国際公開98／057905（ＷＯ，Ａ１) (58)調査した分野(Int.Cl.7，ＤＢ名) C09K 17/00 - 17/52 B28C 1/00 - 9/04 E02D 3/12 E02D 5/00 - 5/20 E02D 17/00 - 17/20 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI E21D 11/00 E21D 11/00 A // (C04B 28/02 C04B 14:10 B 14:10 Z 22:16 Z 22:16 ) 111: 70 111: 70 C09K 103: 00 C09K 103: 00 (56) Reference JP-A-11-310779 (JP, A) JP-A-7-247543 (JP, A) JP-A 64-80620 (JP , A) JP-A-11-35361 (JP, A) JP-A-62-91453 (JP, A) JP-A-10-95976 (JP, A) JP-A-5-43875 (JP, A) International Publication 98 / 057905 (WO, A1) (58) Fields investigated (Int.Cl. 7 , DB name) C09K 17/00-17/52 B28C 1/00-9/04 E02D 3/12 E02D 5/00-5 / 20 E02D 17/00-17/20
Claims (5)
ら選ばれる1種以上の可塑化材、リン酸塩系分散剤、及
び水からなる可塑化液と、セメントミルクからなる硬化
液とを攪拌混合して形成される可塑性注入材。1. A plasticizing liquid containing at least one plasticizer selected from attapulgite and metakaolin, a phosphate dispersant, and water, and a hardening liquid containing cement milk are mixed with stirring. Plastic injection material.
り、可塑化材１００重量部に対してリン酸塩系分散剤が
０．６〜１．２重量部である請求項1に記載の可塑性注
入材。2. The plastic injection material according to claim 1, wherein the plasticizer is attapulgite, and the phosphate dispersant is 0.6 to 1.2 parts by weight with respect to 100 parts by weight of the plasticizer. .
体積比で１：１〜1：８である請求項２に記載の可塑性
注入材。3. The plastic injection material according to claim 2, wherein the mixing ratio of the hardening liquid and the plasticizing liquid is 1: 1 to 1: 8 by volume.
塑化材１００重量部に対してリン酸塩系分散剤が０．０
０５〜０．０３重量部である請求項１に記載の可塑性注
入材。4. The plasticizer is metakaolin, and the phosphate dispersant is 0.0 with respect to 100 parts by weight of the plasticizer.
The plastic injection material according to claim 1, which is from 05 to 0.03 parts by weight.
体積比で１：１〜１：１１である請求項４に記載の可塑
性注入材。5. The plastic injection material according to claim 4, wherein a mixing ratio of the hardening liquid and the plasticizing liquid is 1: 1 to 1:11 by volume ratio.
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|---|---|---|---|
| JP2000159098A JP3435122B2 (en) | 2000-05-29 | 2000-05-29 | Plastic injection material |
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| JP2009132557A (en) * | 2007-11-30 | 2009-06-18 | Taiheiyo Material Kk | Admixture for polymer cement grout |
| JP5354373B2 (en) * | 2009-09-30 | 2013-11-27 | 住友大阪セメント株式会社 | Grout material and grout injection method |
| JP5796764B2 (en) * | 2011-03-08 | 2015-10-21 | 住友大阪セメント株式会社 | Grout, method for producing grout, method for placing plasticized grout, and method for producing plasticized grout |
| JP7256990B2 (en) * | 2019-05-29 | 2023-04-13 | 住友大阪セメント株式会社 | Hydraulic composition, one-component plastic injection material, and filling method for one-component plastic injection material |
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