JP4864445B2 - Filling material - Google Patents
Filling material Download PDFInfo
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- JP4864445B2 JP4864445B2 JP2005366805A JP2005366805A JP4864445B2 JP 4864445 B2 JP4864445 B2 JP 4864445B2 JP 2005366805 A JP2005366805 A JP 2005366805A JP 2005366805 A JP2005366805 A JP 2005366805A JP 4864445 B2 JP4864445 B2 JP 4864445B2
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- Japan
- Prior art keywords
- filling material
- filling
- aluminum powder
- foaming
- metal aluminum
- 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.)
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- 239000000463 material Substances 0.000 title claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 230000000740 bleeding effect Effects 0.000 claims description 6
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 6
- 239000004088 foaming agent Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000004815 dispersion polymer Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- -1 conventionally Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
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
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Lining And Supports For Tunnels (AREA)
Description
この発明は、都市土木で多く用いられるシールドトンネルにおいて、トンネル内に上水道、ガス管等を通す内管を敷設する様な場合に、トンネルを覆う一次覆工と内管である二次覆工の間に形成される余分な空間を充填し固化させることにより、内管二次覆工を保護する材料に係り、大規模な又は複雑に土中に発生した空洞、つまり土中に作られた防空壕の充填、地下構造物や杭周りに発生した空洞を充填する材として空洞をより確実に充填し固化することもできる中詰め材に関する。 In a shield tunnel that is often used in urban civil engineering, when laying an inner pipe through which waterworks, gas pipes, etc. pass in the tunnel, the primary lining that covers the tunnel and the secondary lining that is the inner pipe It is a material that protects the secondary lining of the inner pipe by filling and solidifying the extra space formed between them, and a large or complicated cavity generated in the soil, that is, an air defense fence made in the soil It is related with the filling material which can also fill and solidify a cavity more reliably as a material which fills the cavity and the cavity which generate | occur | produced around the underground structure and the pile.
シールド工法では、シールド掘進機により掘削し、掘進機後方でセグメント等により一次覆工を行う。このトンネルを上水道やガス管敷設等に用いる場合、これを覆う内管を二次覆工として設置する。
一時覆工と二次覆工の間の空洞については、セメントを主体とする中詰め材を充填、固化し保護する（特許文献１参照）。この中詰め材として、従来はエアーモルタル、ベントナイト中詰めエアーモルタルが用いられていた。これらのエアーモルタルは混練時に起泡剤を添加した気泡モルタルを用いるものである。エアーモルタルを用いるのは、経済的に体積を確保できること、および単位体積重量を低くするためである。
In the shield method, excavation is performed with a shield machine, and primary lining is performed with a segment or the like behind the machine. When this tunnel is used for waterworks or gas pipe laying, the inner pipe covering it is installed as a secondary lining.
The cavity between the temporary lining and the secondary lining is filled with a filling material mainly composed of cement to be solidified and protected (see Patent Document 1). As the filling material, conventionally, air mortar and bentonite filling air mortar have been used. These air mortars use bubble mortar to which a foaming agent is added during kneading. The reason why the air mortar is used is that the volume can be secured economically and the unit volume weight is lowered.
ところで、従来のエアーモルタルは、混練時に起泡剤を添加し、気泡の入った状態で圧送するもので、輸送中の起泡を安定させる必要から、高い粘性を必要とする。このため輸送距離が１０００〜１５００ｍしか確保出来ず、長距離輸送のために中継設備を設置しなければならなかった。このため、コスト高となるばかりか、狭いトンネル現場において中継設備設置場所の確保が困難である、という問題を有していた。また、流動性が低いため、充填性が悪く、さらに、流動性低下により、可使時間が短く現場での作業性が不十分である、という問題を有していた。 By the way, the conventional air mortar adds a foaming agent at the time of kneading | mixing, and pumps it in the state containing the bubble, and since it is necessary to stabilize the foaming during conveyance, high viscosity is required. For this reason, a transport distance of only 1000 to 1500 m could be secured, and a relay facility had to be installed for long distance transport. For this reason, not only is the cost high, but there is a problem that it is difficult to secure a location for installing the relay facility in a narrow tunnel site. Further, since the fluidity is low, the filling property is poor, and further, due to the decrease in fluidity, there is a problem that the working time is short and the workability on site is insufficient.
この発明は、かかる現状に鑑み創案されたものであって、その目的とするところは、高流動性を長時間保持して、輸送可能距離を倍程度に延ばすことができ、高い充填性を確保することができ、十分な作業時間を確保することができる中詰め材を提供しようとするものである。 The present invention was devised in view of the current situation, and the object of the present invention is to maintain high fluidity for a long time and to extend the transportable distance by a factor of approximately 2 and to ensure high fillability. Therefore, an object of the present invention is to provide a filling material capable of ensuring sufficient working time.
ところで、この発明に係る中詰め材が用いられる大規模な又は複雑な空洞を充填するグラウト注入工事において、施工のうえで中詰め材に求められる必要な特性として、
Ａ．長距離のポンプ圧送が可能な高い流動性と材料の不分離特性が必要であること。
Ｂ．大規模な又は複雑な空洞を確実に充填するには大容量のグラウト材を長時間かけ連続して注入を行なうために、ポンプ圧送されたグラウト材が目的の充填場所において一箇所より大量のグラウト材が次々と送り込まれることになるが、空洞充填を確実にするには、時間が経過した材料でも出来る限り初期と同程度の流動状態を確保する事が必要であり、それにより次々に注入される材料の充填箇所のレベリングでの充填を実現することが可能であること。
Ｃ．通常は、長時間の流動特性を持つ材料の特性として、相反する現象として材料分離やブリーディング水の発生がある。それにより施工時に充填材の不均一や新たな空洞が発生する。従ってＢの長時間の流動性の保持と材料分離、ブリーディングの発生により新たな空洞の発生を起さない材であること。
が求められる。
By the way, in the grout injection work for filling a large-scale or complicated cavity where the filling material according to the present invention is used, as necessary characteristics required for filling material on construction,
A. High fluidity and non-separation characteristics of materials that can be pumped over long distances are required.
B. In order to reliably fill large or complex cavities, a large volume of grout material can be continuously injected over a long period of time, so that the pumped grout material is more than a single grout at the intended filling location. The material will be fed one after the other, but in order to ensure the filling of the cavity, it is necessary to ensure the flow state as much as possible even in the time-lapsed material as much as possible. It is possible to achieve filling by leveling the filling location of the material.
C. Usually, as a characteristic of a material having a long-time flow characteristic, there are material separation and generation of bleeding water as conflicting phenomena. As a result, non-uniform fillers and new cavities are generated during construction. Therefore, it should be a material that does not cause generation of new cavities due to long-term fluidity retention of B, material separation, and bleeding.
Is required.
上記要求を達成するため、請求項１に記載の中詰め材にあっては、混練時に気泡剤を加えずに、金属アルミ二ウム粉末を用いる事による構内発泡に切り替え、高流動性を長時間保持させ、輸送可能距離を従来の中詰め材の倍程度に延ばし、かつ、水素ガス発生によりブリーディングを抑えるように構成してなることを特徴とするものである。 In order to achieve the above requirements, in the filling material according to claim 1, without adding a foaming agent at the time of kneading, switching to on-site foaming by using metal aluminum powder, high fluidity is maintained for a long time. This is characterized by extending the transportable distance to about twice that of the conventional filling material and suppressing bleeding by the generation of hydrogen gas .
また、請求項２に記載の発明は、請求項１に記載の中詰め材を技術的前提とし、具体的には、セメント、ベントナイト、高分子分散材としてのポリカルボン酸塩、遅延剤としてのリグニンスルホン酸カルシウム、金属アルミニウム粉末、水、から生成することを特徴とするものである。 Further, the invention according to claim 2 is based on the technical premise of the filling material according to claim 1, specifically, cement, bentonite, polycarboxylate as a polymer dispersion, and as a retarder. It is produced from calcium lignin sulfonate, metallic aluminum powder, and water.
請求項１に記載の発明にあっては、シールドトンネル等に中詰めするエアーモルタル又はベントナイト中詰めエアーモルタルで発泡剤として金属アルミニウム粉末を用いるように構成したので、従来技術では、気泡の安定性を確保する為に粘性を高くする必要があったが、混練時に起泡剤を加える必要がなく、金属アルミニウム粉末を用いることによる構内発泡に切り替えることができるので、高流動性を長時間保持することができ、その結果、輸送可能距離を従来の中詰め材よりも倍程度に延ばすことができ、高い充填性を確保することができると共に、十分な作業時間を確保することができる。 In the first aspect of the invention, since the metal aluminum powder is used as the foaming agent in the air mortar or bentonite in-filled air mortar that is packed in a shield tunnel or the like, in the prior art, the stability of the bubbles However, it is not necessary to add a foaming agent at the time of kneading, and it is possible to switch to in-house foaming by using metal aluminum powder, thus maintaining high fluidity for a long time. As a result, the transportable distance can be extended to about twice that of the conventional filling material, high filling property can be secured, and sufficient work time can be secured.
また、請求項２に記載発明にあっては、セメント・ベントナイトを主材とする中詰め材に、ポリカルボン酸塩、リグニンスルホン酸カルシウムを加えることで、流動性を確保することができ、また、十分な作業時間を確保するために遅延型分散剤（遅延剤としてリグニンスルホン酸カルシウム）を使用することで、十分な作業時間を確保することができ、さらには、金属アルミニウムを添加して水酸化カルシウムとの反応により水素ガスを発生させて発泡・膨潤させることで、高い流動性を長時間確保してもブリーディングを有効に抑えることができる等、幾多の優れた効果が得られる。 Further, in the invention according to claim 2, fluidity can be secured by adding polycarboxylate and calcium lignin sulfonate to the filling material mainly composed of cement bentonite, In order to ensure a sufficient working time, by using a delay type dispersant (calcium lignin sulfonate as a retarding agent), a sufficient working time can be ensured. By generating hydrogen gas by the reaction with calcium oxide and foaming / swelling, a number of excellent effects can be obtained, for example, bleeding can be effectively suppressed even if high fluidity is ensured for a long time.
以下、実施例１に基づき、この発明を詳細に説明する。 Hereinafter, based on Example 1, this invention is demonstrated in detail.
本実施例では、表１に示す配合比で混合して中詰め材を生成し、夫々の配合における流動性と水希釈性、水中安定性および乾燥収縮性を測定した。尚、表１及び表５は１ｍ３単位の配合比である。 In this example, the filling material was produced by mixing at the blending ratio shown in Table 1, and the fluidity, water dilution, underwater stability and drying shrinkage in each blend were measured. Tables 1 and 5 show the mixing ratio of 1 m3 unit.
上記配合による結果を表２、表３及び表４に示す The results of the above blending are shown in Table 2, Table 3 and Table 4.
次に、従来の中詰め材の配合を表５に、その試験結果を表６、表７及び表８に示す。 Next, Table 5 shows the composition of the conventional filling material, and Tables 6, 7 and 8 show the test results.
この実施例に係る中詰め材のデータ表１乃至表４と、従来の中詰め材のデータ表５乃至図８を比較して明らかなように、本実施例に係る中詰め材は、従来の中詰め材の２倍の輸送距離を得ることができ、高流動性を有するのが分かる。また、ポリカルボン酸塩、リグニンスルホン酸カルシウムを加えることで、流動性を確保することができ、また、十分な作業時間を確保する為に遅延型分散剤（遅延剤としてリグニンスルホン酸カルシウム）を使用することで、十分な作業時間を確保することができ、さらには、金属アルミニウムを添加して水酸化カルシウムとの反応により水素ガスを発生させて発泡・膨潤させることで、高い流動性を長時間確保してもブリーディングを有効に抑えることができることが分かる。 As clearly shown by comparing the data tables 1 to 4 of the filling materials according to this embodiment and the data tables 5 to 8 of the conventional filling materials, the filling materials according to this embodiment are the conventional filling materials. It can be seen that the transport distance twice that of the filling material can be obtained, and it has high fluidity. In addition, by adding polycarboxylate and calcium lignin sulfonate, fluidity can be secured, and in order to ensure sufficient working time, a delay type dispersant (calcium lignin sulfonate as a retarder) is added. By using it, sufficient working time can be secured, and furthermore, by adding metal aluminum and reacting with calcium hydroxide to generate hydrogen gas and foaming / swelling, high fluidity can be achieved. It can be seen that bleeding can be effectively suppressed even if time is secured.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005366805A JP4864445B2 (en) | 2005-12-20 | 2005-12-20 | Filling material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005366805A JP4864445B2 (en) | 2005-12-20 | 2005-12-20 | Filling material |
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| JP2007169974A JP2007169974A (en) | 2007-07-05 |
| JP4864445B2 true JP4864445B2 (en) | 2012-02-01 |
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| JP4550103B2 (en) * | 2007-11-06 | 2010-09-22 | 鹿島建設株式会社 | Control method of air permeability coefficient, strength and specific gravity of cured foam mortar |
| JP5833859B2 (en) * | 2011-08-04 | 2015-12-16 | キザイテクト株式会社 | Bubble mortar kneaded material and filling method |
| JP6561014B2 (en) * | 2016-06-01 | 2019-08-14 | 日鉄パイプライン＆エンジニアリング株式会社 | Gap filler and method for producing the same |
| CN111675516A (en) * | 2020-06-11 | 2020-09-18 | 东南大学 | Composite cement-based material capable of buffering, absorbing energy and reducing vibration and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0794339B2 (en) * | 1991-07-12 | 1995-10-11 | 安藤建設株式会社 | Concrete for direct lining |
| JPH06115987A (en) * | 1992-10-05 | 1994-04-26 | Denki Kagaku Kogyo Kk | Cement material |
| JP3739823B2 (en) * | 1994-12-14 | 2006-01-25 | 太平洋セメント株式会社 | Cellular foam mortar filling material |
| JP3049244B2 (en) * | 1998-03-31 | 2000-06-05 | 住友大阪セメント株式会社 | Set retarder for backfill injection material, set retarder for backfill injection material, backfill injection material and backfill injection method |
| JP3490626B2 (en) * | 1998-05-29 | 2004-01-26 | 東日本旅客鉄道株式会社 | Filling method of cavity and injection material used for it |
| JP3502290B2 (en) * | 1999-03-26 | 2004-03-02 | 住友大阪セメント株式会社 | Void filling method between outer pipe and inner pipe |
| JP2002080253A (en) * | 2000-09-05 | 2002-03-19 | Mitsubishi Materials Corp | Segregation resisting type cavity packing material |
| JP2003055024A (en) * | 2001-08-09 | 2003-02-26 | Denki Kagaku Kogyo Kk | Cement composition |
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