JP4636970B2 - Grout method - Google Patents

Grout method Download PDF

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JP4636970B2
JP4636970B2 JP2005231104A JP2005231104A JP4636970B2 JP 4636970 B2 JP4636970 B2 JP 4636970B2 JP 2005231104 A JP2005231104 A JP 2005231104A JP 2005231104 A JP2005231104 A JP 2005231104A JP 4636970 B2 JP4636970 B2 JP 4636970B2
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grout
gypsum
cement
water
retarder
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JP2007045657A (en
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正博 吉原
雅彦 吉田
賢司 宮脇
浩三 石川
伸幸 田中
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Sumitomo Osaka Cement Co Ltd
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Sumitomo Osaka Cement Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Description

本発明は、土木構造物の空洞充填、軽量盛土、及び埋立て等に利用できるグラウト材及びグラウト工法、特に潜在性水硬性材料を使用した可塑性グラウト材及びグラウト工法に関する。   The present invention relates to a grouting material and a grouting method that can be used for cavity filling of civil engineering structures, lightweight embankment, and landfilling, and more particularly to a plastic grouting material and a grouting method using a latent hydraulic material.

地盤、土木構造物の空洞や隙間を充填等に利用するグラウト材において、目的の空洞充填部に効率的に確実に注入し、周辺の隙間等への漏れがないようにするため、あるいは、注入材が地下水や流水に希釈されるのを防止するため、注入材にゲル状の凝集体としての性状があることが望ましい場合が少なくない。そして、かかる注入材は、ポンプで圧送するのに十分な流動性を保つ必要があり、また、グラウト材としての性能を発揮するために充填部において確実に硬化するものである必要がある。
このような性状、機能を有する可塑性注入材(可塑性グラウト材)が従来より提案され、実用に供されている。
たとえば、セメントミルクと、ベントナイトミルクとを混合攪拌して得られる空洞充填、軽量盛土、及び埋立用の可塑性注入材が提案されており(特許文献1参照)、流動性モルタルに、モンモリロナイト粘土鉱物を混入した流動性の膨潤液を加えることにより非流動性の可塑状のグラウト材を得ることが提案されている(特許文献2参照)。
For grout materials that use cavities and gaps in the ground and civil engineering structures for filling, etc., in order to inject efficiently and surely into the target cavity filling part, and to prevent leakage into surrounding gaps, etc. In order to prevent the material from being diluted with ground water or running water, it is often desirable that the injected material has properties as a gel-like aggregate. And such an injection material needs to maintain fluidity | liquidity sufficient for pumping with a pump, and needs to harden | cure reliably in a filling part, in order to exhibit the performance as a grout material.
A plastic injection material (plastic grout material) having such properties and functions has been proposed and put into practical use.
For example, a plastic filling material for cavity filling, lightweight embankment, and landfill obtained by mixing and stirring cement milk and bentonite milk has been proposed (see Patent Document 1), and montmorillonite clay mineral is added to the flowable mortar. It has been proposed to obtain a non-flowable plastic grout material by adding a mixed fluid swelling liquid (see Patent Document 2).

しかしながら、これらの可塑性注入材にあっては、硬化助材としてセメントミルクや流動性モルタルを使用しているため、セメントミルク等自体が、その流動性が低下したり、所定時間経過後に硬化することとなる。
このため、従来、可塑性グラウト材の硬化を遅延させるには、コンクリートなどで使用されている遅延剤が用いられ、所定の遅延効果を得るには遅延剤量を調整することによって対応していた。この場合、室内試験では所定の遅延効果が発揮できるが、実施工においては現場の状況(温度、水中・気中の養生条件、負荷圧の有無)によって、遅延剤の効果が予定通り発揮できないことが多く、粘土の凝集を利用した可塑性グラウト材の場合、粘土が遅延剤を吸着することから、通常の添加量より、多量に添加しなければならない等、遅延剤による硬化時間の調整は極めて煩雑である。また、日々の施工終了時や製造プラントのトラブルなどにより、数時間から数日間注入が中断する場合など、遅延剤の効果が期待できない場合があり、毎回ホース内を洗浄してセメントミルクを取り出す必要がある。その上、洗浄した廃水の処理も必要となり手間がかかってしまう。
However, in these plastic injection materials, cement milk or fluid mortar is used as a curing aid, so that the cement milk itself itself is reduced in fluidity or cured after a predetermined time. It becomes.
For this reason, conventionally, a retarder used in concrete or the like is used to delay the hardening of the plastic grout material, and a predetermined retarding effect is obtained by adjusting the amount of the retarder. In this case, the predetermined delay effect can be exhibited in the laboratory test, but the effect of the retarder cannot be exhibited as planned depending on the situation at the site (temperature, underwater / air curing conditions, presence / absence of load pressure). In the case of plastic grout materials using clay agglomeration, clay adsorbs the retarder, so adjustment of the curing time with the retarder is extremely complicated because it must be added in a larger amount than the usual addition amount. It is. In addition, there may be cases where the effect of the retarder cannot be expected, such as when injection is interrupted for several hours to several days due to problems such as the completion of daily construction or a manufacturing plant. There is. In addition, the waste water that has been washed is also required to be processed.

特許文献3では、遅延剤等を添加することがなくとも使用する液材が短時日のうちに硬化したり、流動性の低下が発生することがない遅延型の可塑性注入材として、セメント水和物などの硬化助材を混合したアルカリ性の液材(刺激液)と、高炉スラグなどの潜在水硬性物質とベントナイトなどの可塑化材とを含む液材(硬化液)とを攪拌混合して形成される可塑性注入材が提案されている。
この可塑性注入材では、高炉スラグなどの潜在水硬性物質とベントナイトなどの可塑化材を混合した硬化液は、刺激液と接触して硬化が起こり強度が発現し始める。しかし、グラウト工法の様々な適用場面、適用環境において、これら両液の混合液は、その可塑性発現、強度発現が時間的、物性的に必ずしも一定せず、調整が難しいために、計画的な作業を確保できない場合が少なくなかった。
In Patent Document 3, cement hydrate is used as a delay type plastic injection material in which a liquid material to be used does not harden in a short time or does not cause a decrease in fluidity without adding a retarder or the like. It is formed by stirring and mixing an alkaline liquid material (stimulating liquid) mixed with a curing aid such as a liquid material (hardening liquid) containing a latent hydraulic substance such as blast furnace slag and a plasticizing material such as bentonite. Plastic injection materials have been proposed.
In this plastic injection material, a hardening liquid in which a latent hydraulic material such as blast furnace slag and a plasticizing material such as bentonite are mixed comes into contact with the stimulating liquid and begins to develop strength. However, in various application situations and application environments of the grout method, the mixed solution of these two solutions is not always constant in terms of temporal and physical properties, and is difficult to adjust. There were many cases that could not be secured.

特許第3378501号公報Japanese Patent No. 3378501 特開平11−124574号公報Japanese Patent Laid-Open No. 11-124574 特許第3366617号公報Japanese Patent No. 3366617

かかる状況に鑑み、本発明は、使用する液材および混合液が短時日のうちに硬化したり、流動性の低下が発生することがない可塑性注入材(可塑性グラウト材)であって、強度発現を必要とする状況になった時点で、刺激剤を可塑性グラウト材内に注入して、固化させる方法を提供することを目的とする。   In view of such a situation, the present invention is a plastic injection material (plastic grout material) in which the liquid material and the mixed liquid to be used are not cured within a short period of time, or the decrease in fluidity does not occur. It is an object of the present invention to provide a method for injecting an irritant into a plastic grout material and solidifying it when necessary.

本発明者らは鋭意検討を行った結果、石膏と水を混練したミルク(A液)と、潜在水硬性材料と可塑化材と水を混練したミルク(B液)とを混合、攪拌してゲル化させた可塑性グラウト材であって、硬化必要時まで未硬化状態を保持するように遅延剤を含有する可塑性グラウト材、および、硬化必要時にCaイオンを溶出させる刺激剤を注入して該可塑性グラウト材を硬化させるグラウト工法が上記課題を解決できることを見出し本発明を完成した。   As a result of intensive studies, the inventors have mixed and stirred milk (liquid A) in which gypsum and water are kneaded and milk (liquid B) in which a latent hydraulic material, a plasticizer and water are kneaded. It is a plasticized grout material that has been gelled, and injects a plastic grout material containing a retarder so as to maintain an uncured state until it is necessary for curing, and a stimulant that elutes Ca ions when it is necessary for curing. The present invention has been completed by finding that a grout method for curing a grout material can solve the above-mentioned problems.

すなわち、本発明は、石膏と水を混練したミルク(A液)と、潜在水硬性材料と可塑化材と水を混練したミルク(B液)とを混合、攪拌してゲル化させたものであって、硬化必要時まで未硬化状態を保持するように遅延剤を含有する可塑性グラウト材を提供するものであり、潜在水硬性材料と石膏との質量比が95:5〜30:70で混合した可塑性グラウト材であることが好ましく、遅延剤を潜在水硬性材料と石膏との質量の混合物に対し質量比で0.4〜2.0%含有させることが好ましい。
可塑化材は、ベントナイト、アタパルジャイト、メタカオリンから選ばれる1種以上であることが好ましく、石膏は無水石膏が最も好ましく用いられる。
そして、本発明は、施工箇所にあらかじめ注入され、未硬化状態である可塑性グラウト材マトリックス中にCaイオンを溶出させる刺激剤を注入して、該グラウト材マトリックスを硬化させることを特徴とするグラウト工法を提供する。
That is, the present invention is a mixture of milk (liquid A) in which gypsum and water are kneaded and milk (liquid B) in which a latent hydraulic material, a plasticizer and water are kneaded, and gelled by stirring. The present invention provides a plastic grout material containing a retarder so as to maintain an uncured state until curing is necessary, and the mass ratio of the latent hydraulic material and gypsum is 95: 5 to 30:70. It is preferable to contain a retarder in a mass ratio of 0.4 to 2.0% with respect to the mass mixture of the latent hydraulic material and gypsum.
The plasticizer is preferably at least one selected from bentonite, attapulgite, and metakaolin, and anhydrous gypsum is most preferably used as the gypsum.
And this invention inject | pours the irritation | stimulation agent which elutes Ca ion in the plastic grout material matrix which is previously inject | poured into a construction location and is an unhardened state, The grout material matrix is hardened | cured, It is characterized by the above-mentioned I will provide a.

本発明のA液は、数日間〜数週間は未硬化であり、その間、A液とB液を混合したグラウト材は、可塑状態を保持し硬化していない状態である。強度発現が必要となった時点で、刺激剤を注入してグラウト材が硬化し、強度発現される。
すなわち、本発明の可塑性グラウト材は、可塑状態を保持したまま、強度発現を必要とする時点まで硬化を遅延させることが可能となる。このため、亀裂などへの逸脱などもなく、限定注入が可能であり、計画的な施工管理が行える利点がある。
また、本発明によれば、使用する液材(A液、B液)及び混合液が短時日のうちに硬化したり、流動性の低下が発生することがないため、日々の施工終了時や施工中断時にミキサー、ホースなどの洗浄が必要なくなり施工の省力化となり、洗浄水の排水処理問題もなくなる。
The liquid A of the present invention is uncured for several days to several weeks. Meanwhile, the grout material obtained by mixing the liquid A and the liquid B maintains a plastic state and is not cured. When strength is required, a stimulant is injected to harden the grout material and strength is developed.
In other words, the plastic grout material of the present invention can delay the curing until it needs to develop strength while maintaining the plastic state. For this reason, there is no deviation to cracks and the like, and limited injection is possible, and there is an advantage that planned construction management can be performed.
In addition, according to the present invention, since the liquid material (A liquid, B liquid) and the liquid mixture to be used do not harden in a short time or the fluidity does not deteriorate, During the interruption, it is not necessary to clean the mixer, hose, etc., which saves work and eliminates the problem of waste water treatment for the washing water.

以下本発明の実施の形態を説明する。
本発明の可塑性グラウト材は、潜在水硬性物質である高炉スラグ等に石膏および水を含有させたものである。
Embodiments of the present invention will be described below.
The plastic grout material of the present invention is obtained by adding gypsum and water to blast furnace slag, which is a latent hydraulic substance.

潜在水硬性物質は、水和反応により水和物を形成して硬化しうる鉱物成分を含有しているが通常の条件下で水と接触しても水和反応を開始することがなく、この反応系に硬化助材を存在させると水和反応を開始して硬化する材料であり、本発明においては高炉スラグなどのスラグ粉末及び/又はフライアッシュ(石炭灰)を用いる。   The latent hydraulic substance contains a mineral component that can be hardened by forming a hydrate by a hydration reaction, but it does not initiate a hydration reaction even when contacted with water under normal conditions. In the present invention, a slag powder such as blast furnace slag and / or fly ash (coal ash) is used.

石膏は、ベントナイトなど可塑化材の凝集・可塑化を発現させる働きがある。また、その添加量が多い場合は可塑性グラウト材の硬化を促進する傾向があり、少ない場合は可塑性グラウト材の硬化が遅れるため、遅延剤の添加を少なくすることができる。
本発明において、石膏は無水石膏、半水石膏、二水石膏のいずれをも使用することができる。このうち、無水石膏がグラウト材の硬化後の発現強度が大きくなる点で最も好ましく用いられる。
Gypsum has the function of causing aggregation and plasticization of plasticized materials such as bentonite. Moreover, when there is much addition amount, there exists a tendency which accelerates | stimulates hardening of a plastic grout material, and since hardening of a plastic grout material is overdue when it is small, addition of a retarder can be decreased.
In the present invention, the gypsum can be any of anhydrous gypsum, hemihydrate gypsum, and dihydrate gypsum. Among these, anhydrous gypsum is most preferably used in that the strength of expression after hardening of the grout material is increased.

可塑性グラウト材中において、スラグ及び/又はフライアッシュと石膏との質量比は95:5〜30:70、より好ましくは90:10〜70:30で含有するのが好ましい。   In the plastic grout material, the mass ratio of slag and / or fly ash to gypsum is preferably 95: 5 to 30:70, more preferably 90:10 to 70:30.

本発明の可塑性グラウト材中には、硬化必要時まで未硬化状態を保持するように遅延剤が含有される。遅延剤としてはコンクリートなどで用いられている遅延剤が使用でき、リグニンスルホン酸塩、オキシカルボン酸塩、および糖類誘導体などが例示できる。
遅延剤は、潜在水硬性材料と石膏との混合物に対し質量比で0.4〜2.0%含有させることが好ましい。
The plastic grout material of the present invention contains a retarder so as to maintain an uncured state until it is necessary to cure. As the retarder, a retarder used in concrete or the like can be used, and examples thereof include lignin sulfonate, oxycarboxylate, and saccharide derivatives.
The retarder is preferably contained in a mass ratio of 0.4 to 2.0% with respect to the mixture of the latent hydraulic material and gypsum.

本発明の可塑性グラウト材中には、グラウト材を可塑化するための可塑化材とこれを分散させるための水を混合する。
可塑性グラウト材中のベントナイトなど可塑化材は水中で膨潤し、マイナスイオンに帯電している。石膏中のカルシウムイオンなどにより、ベントナイト粒子表面のマイナス荷電をカルシウムイオンが中和することにより、ベントナイト粒子の分子間引力による急激な凝集反応が発生し、瞬時に可塑性を生じる。
可塑化材としては、粘土鉱物が好適に用いられるが、なかでも、ベントナイト、アタパルジャイト、メタカオリンから選ばれる1種以上であることが好ましい。
また、可塑性グラウト材中には、その流動性を高めるために、混和剤としての減水剤を添加することができる。かかる減水剤としては、ナフタレンスルホン酸系、メラミンスルホン酸系、およびポリカルボン酸系などコンクリートにおいて用いられる減水剤が使用できる。減水剤の添加量は、減水剤の種類や製品により異なるが、通常、可塑化材に対して質量比で0.5〜2.0%である。
In the plastic grout material of the present invention, a plasticizer for plasticizing the grout material and water for dispersing the same are mixed.
Plasticizing materials such as bentonite in the plastic grout material swell in water and are charged with negative ions. When calcium ions neutralize negative charges on the surface of bentonite particles due to calcium ions in gypsum and the like, a rapid agglomeration reaction due to intermolecular attractive force of bentonite particles occurs, and plasticity is instantly generated.
As the plasticizer, clay minerals are preferably used, and among them, at least one selected from bentonite, attapulgite, and metakaolin is preferable.
Further, a water reducing agent as an admixture can be added to the plastic grout material in order to increase its fluidity. As such a water reducing agent, water reducing agents used in concrete such as naphthalene sulfonic acid, melamine sulfonic acid, and polycarboxylic acid can be used. The amount of water-reducing agent added varies depending on the type of water-reducing agent and the product, but is usually 0.5 to 2.0% by mass with respect to the plasticizer.

本発明の可塑性グラウト材は、シリンダーフロー値が80〜150mmの範囲の可塑性状を示すものである。   The plastic grout material of the present invention exhibits plasticity with a cylinder flow value in the range of 80 to 150 mm.

本発明の可塑性グラウト材は施工箇所にあらかじめ注入して、硬化必要時まで未硬化状態を保持することができ、強度発現を要する時に、Caイオンを溶出させる刺激剤を注入して、該可塑性グラウト材を固化させるグラウト工法が可能となる。なお、注入後に均一性を要求される場合は高圧噴射攪拌もしくは機械攪拌などを実施すればよい。
Caイオンを溶出させる刺激剤としては、ポルトランドセメント、高炉セメント、フライアッシュセメント、シリカセメント、エコセメント、セメント系固化材、水酸化カルシウムなどが例示できる。該刺激剤は、通常、水と混合したスラリー状態(濃度50〜200重量%)で用いられ、その添加量は、スラリーとして、グラウト材容積の5〜10%程度が好適である。
The plastic grout material of the present invention is pre-injected into a construction site and can be kept in an uncured state until it is necessary to cure, and when strength development is required, a stimulant that elutes Ca ions is injected to the plastic grout material. A grout method for solidifying the material becomes possible. If uniformity is required after injection, high-pressure jet stirring or mechanical stirring may be performed.
Examples of the stimulant for eluting Ca ions include Portland cement, blast furnace cement, fly ash cement, silica cement, eco cement, cement-based solidified material, calcium hydroxide, and the like. The stimulant is usually used in a slurry state (concentration: 50 to 200% by weight) mixed with water, and the addition amount is preferably about 5 to 10% of the grout material volume as a slurry.

以下、本発明に係る発明を下記実施例によりさらに詳細に説明する。なお、実施例における試験は以下のように行った。
可塑性評価は、日本道路公団規格試験法であるシリンダー法フロー試験によった。フロー値は、80〜150mmが好ましく、80〜120mmがより好ましい。当該フロー値が150mm以上のものは限定注入等には適さない(80mm径のシリンダーを用いるので、80mm未満になることはない)。
硬化体の圧縮強度は、地盤工学会基準「一軸圧縮試験(JISA1216)」により測定した。グラウト工法におけるグラウト材硬化体の圧縮強度は、0.5N/mm2以上あれば十分である。
The invention according to the present invention will be described in more detail with reference to the following examples. In addition, the test in an Example was performed as follows.
The plasticity evaluation was based on the cylinder method flow test, which is the Japan Highway Public Corporation standard test method. The flow value is preferably 80 to 150 mm, more preferably 80 to 120 mm. Those having a flow value of 150 mm or more are not suitable for limited injection or the like (since an 80 mm diameter cylinder is used, it is not less than 80 mm).
The compressive strength of the cured body was measured by the Geotechnical Society standard “uniaxial compression test (JIS A1216)”. It is sufficient that the compressive strength of the grout material cured body in the grout method is 0.5 N / mm 2 or more.

実施例1
スラグとして高炉スラグ(JIS R5211「高炉セメント」に規定されるもの)と、石膏として無水石膏と、遅延剤(JETMS−A液用混和剤(ポリカルボン酸系)、住友大阪セメント(株)製)と、水とを、表1の組成で混練し、A液を調製し、可塑化材としてのアタパルジャイト(200メッシュふるい全通の粒径)又はベントナイト(膨潤度16;200メッシュふるい全通の粒径)と、減水剤(JETMS−B液用混和剤(ピロ燐酸系)、住友大阪セメント(株)製)と、水とを、表1の組成で混練してB液を調製した。A液、B液は材料分離がなく、ポンプ圧送性のよいものであった。この2液を混合攪拌し、可塑化(ゲル化)させた。
両液混合直後のシリンダーフロー値(可塑性)を表1に示した。また、表1の配合No.1〜2について、両液混合7日後、可塑化させた未硬化グラウト材に、刺激剤(W/C比=100%のセメントミルク:普通ポルトランドセメント、住友大阪セメント(株)製)を容積比で5%注入しハンドミキサーで混合攪拌し、強度発現性を確認した。刺激剤注入後のグラウト材の圧縮強度の経日変化を表3に配合No.1´〜2´として示した。(また、刺激剤無注入のままのグラウト材の両液混練後の固化状態、固化後圧縮強度の経日変化を表2に配合No.1〜2として示した。)
Example 1
Blast furnace slag as slag (as defined in JIS R5211 “Blast furnace cement”), gypsum as anhydrous gypsum, retarder (admixture for JETMS-A liquid (polycarboxylic acid), manufactured by Sumitomo Osaka Cement Co., Ltd.) And water are kneaded with the composition shown in Table 1 to prepare solution A, and attapulgite (200 mesh sieve overall particle size) or bentonite (swelling degree 16; 200 mesh sieve all granules) as a plasticizer Diameter), a water reducing agent (admixture for JETMS-B solution (pyrophosphoric acid), manufactured by Sumitomo Osaka Cement Co., Ltd.) and water were kneaded with the composition shown in Table 1 to prepare solution B. The liquid A and liquid B had no material separation and had good pumpability. The two liquids were mixed and stirred to be plasticized (gelled).
The cylinder flow values (plasticity) immediately after mixing both liquids are shown in Table 1. Moreover, about the mixing | blending No. 1-2 of Table 1, 7 days after mixing both liquids, the plasticizer uncured grout material is added to a stimulant (cement milk with W / C ratio = 100%: normal Portland cement, Sumitomo Osaka cement (Made by Co., Ltd.) was injected at a volume ratio of 5%, mixed and stirred with a hand mixer, and strength development was confirmed. Table 3 shows the daily changes in the compressive strength of the grout after injection of the stimulant, as formulation Nos. 1 'to 2'. (In addition, Table 2 shows the solidification state after kneading both liquids of the grout material without injection of the stimulant and the change over time in the compression strength after solidification as formulation Nos. 1-2.)

表1から、本発明所定の組成である配合No.1〜2のものは、混合液が良好な可塑性を示すことがわかる。
また、表2及び表3から、本発明の可塑性グラウト材は、A液とB液を混合しただけでは未硬化状態が7日以上であったが、刺激剤を注入することで強度発現が生じることが確認できる。


From Table 1, it can be seen that the mixture Nos. 1 and 2 having the predetermined composition of the present invention show good plasticity of the mixed solution.
Also, from Tables 2 and 3, the plastic grout material of the present invention was in an uncured state for 7 days or more simply by mixing the liquid A and the liquid B, but strength was developed by injecting a stimulant. I can confirm that.


Claims (9)

施工箇所にあらかじめ注入され、未硬化状態である可塑性グラウト材マトリックス中にCaイオンを溶出させる刺激剤を注入して、該グラウト材マトリックスを硬化させるグラウト工法であって、該可塑性グラウト材が、潜在水硬性材料、石膏、可塑化材及び水とを混合、攪拌してゲル化させたものであ、硬化必要時まで未硬化状態を保持するように遅延剤を含有するものであるグラウト工法 A grout method for injecting a stimulant that elutes Ca ions into an uncured plastic grout material matrix that has been pre-injected into a construction site and curing the grout material matrix. hydraulic material, gypsum, grout method is to contain a retarder to hold mixing the plasticized material and water state, and are not allowed to gel by stirring, uncured state until time of curing required. 該可塑性グラウト材が、石膏と水を混練したミルク(A液)と、潜在水硬性材料と可塑化材と水を混練したミルク(B液)とを混合、攪拌してゲル化させたものであって、硬化必要時まで未硬化状態を保持するように遅延剤を含有するものである、請求項1に記載のグラウト工法 The plastic grout material is a mixture of milk (liquid A) in which gypsum and water are kneaded and milk (liquid B) in which a latent hydraulic material, a plasticizer and water are mixed, and stirred to gel. The grouting method according to claim 1, wherein the grouting method comprises a retarder so as to maintain an uncured state until curing is necessary. 潜在水硬性材料と石膏との質量比が95:5〜30:70である請求項1又は請求項2記載のグラウト工法The grout method according to claim 1 or 2, wherein the mass ratio of the latent hydraulic material and gypsum is 95: 5 to 30:70 . 遅延剤を潜在水硬性材料と石膏との合計量に対し質量比で0.4〜2.0%含有させたものである請求項1又は2に記載のグラウト工法The grout method according to claim 1 or 2, wherein the retarder is contained in a mass ratio of 0.4 to 2.0% with respect to the total amount of the latent hydraulic material and gypsum. 潜在水硬性材料が高炉スラグ及び/又はフライアッシュである請求項1又は2に記載のグラウト工法The grout method according to claim 1 or 2, wherein the latent hydraulic material is blast furnace slag and / or fly ash. 可塑化材が、ベントナイト、アタパルジャイト、メタカオリンから選ばれる1種以上である請求項1又は2に記載のグラウト工法The grout method according to claim 1 or 2, wherein the plasticizing material is at least one selected from bentonite, attapulgite, and metakaolin. 石膏が無水石膏である請求項1又は2に記載のグラウト工法The grout method according to claim 1 or 2, wherein the gypsum is anhydrous gypsum. 減水剤を可塑化材に対し質量比で0.5〜2.0%添加した請求項1又は2に記載のグラウト工法The grout method according to claim 1 or 2, wherein a water reducing agent is added in a mass ratio of 0.5 to 2.0% with respect to the plasticizer. 刺激剤が、ポルトランドセメント、高炉セメント、フライアッシュセメント、シリカセメント、エコセメント、セメント系固化材、水酸化カルシウムから選ばれる1種以上である請求項1〜8のいずれかに記載のグラウト工法。 The grout method according to any one of claims 1 to 8, wherein the stimulant is at least one selected from Portland cement, blast furnace cement, fly ash cement, silica cement, eco cement, cement-based solidified material, and calcium hydroxide.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111533525A (en) * 2020-05-09 2020-08-14 南京天亚新材料有限公司 Grouting material special for bridge restoration

Families Citing this family (5)

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JP6179128B2 (en) * 2013-02-28 2017-08-16 株式会社大林組 Compaction material using coal ash and method for producing the same
JP6395030B2 (en) * 2014-06-05 2018-09-26 住友大阪セメント株式会社 First mixture for producing plastic injection material, method for producing plastic injection material, and method for applying plastic injection material
JP6414748B2 (en) * 2015-02-10 2018-10-31 住友大阪セメント株式会社 Kit for plastic injection material, plastic injection material, method for manufacturing plastic injection material, and method for applying plastic injection material
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CN113603441A (en) * 2021-08-26 2021-11-05 昆明理工大学 Method for preparing phosphogypsum-based gelled filling material by CaO phosphorus fixation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001303052A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plasticizer injecting material
JP2001302324A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plastic grout
JP2003119464A (en) * 2001-10-16 2003-04-23 Denki Kagaku Kogyo Kk Slug-based grouting material
JP2003306368A (en) * 2002-04-16 2003-10-28 Denki Kagaku Kogyo Kk Grout and injection method using it

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001303052A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plasticizer injecting material
JP2001302324A (en) * 2000-04-17 2001-10-31 Sumitomo Osaka Cement Co Ltd Plastic grout
JP2003119464A (en) * 2001-10-16 2003-04-23 Denki Kagaku Kogyo Kk Slug-based grouting material
JP2003306368A (en) * 2002-04-16 2003-10-28 Denki Kagaku Kogyo Kk Grout and injection method using it

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111533525A (en) * 2020-05-09 2020-08-14 南京天亚新材料有限公司 Grouting material special for bridge restoration
CN111533525B (en) * 2020-05-09 2020-12-11 南京天亚新材料有限公司 Grouting material special for bridge restoration

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