JPS62265395A - Self-hardening lubricating material - Google Patents
Self-hardening lubricating materialInfo
- Publication number
- JPS62265395A JPS62265395A JP10924986A JP10924986A JPS62265395A JP S62265395 A JPS62265395 A JP S62265395A JP 10924986 A JP10924986 A JP 10924986A JP 10924986 A JP10924986 A JP 10924986A JP S62265395 A JPS62265395 A JP S62265395A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating material
- self
- cement
- hardening
- lubricant
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 28
- 230000001050 lubricating effect Effects 0.000 title claims abstract 9
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 9
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 9
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 229920000609 methyl cellulose Polymers 0.000 claims abstract description 5
- 239000001923 methylcellulose Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 12
- 235000010981 methylcellulose Nutrition 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011787 zinc oxide Substances 0.000 abstract description 4
- 229910052593 corundum Inorganic materials 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229910052666 hauyne Inorganic materials 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 30
- 230000029058 respiratory gaseous exchange Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000011398 Portland cement Substances 0.000 description 4
- 229910001653 ettringite Inorganic materials 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000011800 void material Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- -1 magnesium halides Chemical class 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Lubricants (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は下水道管等を布設するための推進工法に用いら
れる滑材に関するもので、さらに詳しくは、ベントナイ
トを主材料とした従来の滑材にセメント等を添加するこ
とにより、滑材と裏込材との双方の性能を兼備させた自
硬性滑材に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a slipping material used in a propulsion method for laying sewer pipes, etc. More specifically, the present invention relates to a slipping material used in a propulsion method for laying sewer pipes, etc. The present invention relates to a self-hardening lubricant that has the performance of both a lubricant and a backing material by adding cement or the like to the lubricant.
近年、下水道管渠等の布設に際しては、交通量の増大に
伴なう工事の安全性、市街地における工事公害の防除お
よび工期短縮の面より、推進工法あるいはシールド工法
等の特殊工法の採用が多くなっている。In recent years, when constructing sewer pipes, etc., special construction methods such as the propulsion construction method or the shield construction method are often used in order to ensure safety in the construction work due to the increase in traffic volume, to prevent construction pollution in urban areas, and to shorten the construction period. It has become.
上記推進工法においては、推進時に生じる摩擦抵抗力が
大きくなるとジヤツキ推進力により管が破損し、推進不
能となるので、滑材を注入して地山と推進管との間の摩
擦を減じてジヤツキ推進力が管の強度を上回らないよう
にしているのが通例である。In the above propulsion method, if the frictional resistance generated during propulsion increases, the jacking propulsion force will damage the pipe and make it impossible to propel it, so slipping material is injected to reduce the friction between the ground and the propulsion pipe. It is customary to ensure that the propulsion force does not exceed the strength of the tube.
ここで注入される滑材には主としてベントナイトが使用
されており、その一般的な配合はベントナイト５０−１
５０ｋｇ／ｒｒｒ’、メチル−ｔ’ ルロ−ス０〜２ｋ
ｇ／ｌｎ’、高吸水樹脂０〜２ｋｇ／ｍ’、水残量で極
めて多量の水を含有する材料であり、かつ自硬性を持た
ない、そのため推進が完了した後、そのまま放置すると
、水分が周囲に散逸し空隙が生じる。この空隙部分は土
庄に耐えられないため、地表面の沈下を起こし建物や地
下埋設物に悪影響を与える。そこで推進後は速やかに強
度の高い裏込材を注入し、滑材と置換する必要がある。Bentonite is mainly used as the lubricant injected here, and its general composition is bentonite 50-1.
50kg/rrr', Methyl-t' Luulose 0-2k
g/ln', super absorbent resin 0 to 2 kg/m', the material contains an extremely large amount of water in terms of remaining water, and does not have self-hardening properties, so if it is left as it is after propulsion is completed, the water will evaporate. It dissipates into the surrounding area and creates a void. This void cannot withstand the tonosho, causing the ground surface to sink and having a negative impact on buildings and underground objects. Therefore, after propulsion, it is necessary to immediately inject a high-strength backing material to replace the slipping material.
このように推進工法においては滑材の注入およびその後
の裏込材の充填により、管の推進力を小さくし、推進終
了後は管と地山を密着させることにより周辺地盤に対す
る影響をできる限り少なくすることが重要である。In this way, the propulsion method reduces the propulsion force of the pipe by injecting slipping material and then filling it with backing material, and after the propulsion is finished, the pipe and the ground are brought into close contact, thereby minimizing the impact on the surrounding ground as much as possible. It is important to.
しかし、推進時に滑材を注入し終了後は裏込材とａ！！
換える工法では、滑材と裏込材の置き換えが十分でなか
ったり、裏込材と滑材が混合することにより強度が発現
しなかったりすることがある。またＭＳ換え工事による
コストの上昇や工期の延長も見のがせないものであり、
滑材と裏込材両方の性能を兼備した自硬性滑材の開発が
望まれている。However, when the lubricant is injected during propulsion, the backfill material and a! !
In the replacement construction method, the replacement of the lubricant and backfilling material may not be sufficient, or strength may not be developed due to mixing of the backfilling material and the lubricant. In addition, we cannot ignore the rise in costs and extension of the construction period due to MS replacement work.
It is desired to develop a self-hardening lubricant that has the performance of both a lubricant and a backfill material.
推進工法における管の推進期間は最長とされる１５０ｍ
程度の推進距離で３週間であるが、工程上のトラブルで
推進期間が長くなることを考慮すると、摩擦抵抗を減じ
るために注入される滑材は１ケ月ちかくその機能を保持
する必要がある。推進終了後周辺の地盤に影響が及ばな
いようにするためには、裏込材は硬化して地山と同程度
の強度を発現する必要があり、また布設された管と地山
を一体化するとの要求性能よりブリージングはできる限
り小さい方が望ましい。The maximum length of time for pipe propulsion using the propulsion method is 150m.
It takes about three weeks to propel the vehicle over a certain distance, but considering that the propulsion period can be extended due to problems in the process, the lubricant injected to reduce frictional resistance needs to maintain its function for about a month. In order to prevent the surrounding ground from being affected after the propulsion is finished, the backing material needs to harden to have the same strength as the ground, and it is also necessary to integrate the laid pipe and the ground. In view of the required performance, it is desirable that breathing be as small as possible.
以上の点を要約すると滑材と裏込材両方の性能を兼備し
た上記自硬性滑材に要求される性能は次のようになる。To summarize the above points, the performance required of the above-mentioned self-hardening lubricant having both the performance of a lubricant and a backing material is as follows.
ｉ）流動性は現在一般的に使用されている滑材の流動性
から大きくは逸脱せず、ＪＡロートの流下時間が１２秒
以下である必要がある。i) The fluidity should not deviate significantly from the fluidity of currently commonly used lubricants, and the flow time through the JA funnel should be 12 seconds or less.
ｉｉ） 滑り抵抗はできる限り小さい方が望ましく、
推進工事が完了するまでは、管と地山の摩擦抵抗を考慮
して０．０３ ｋ ｇ ｆ ／ ｃゴ以下の剪断強度を
保持する必要がある。ii) It is desirable that the slip resistance be as small as possible;
Until the propulsion work is completed, it is necessary to maintain a shear strength of 0.03 kgf/c or less, taking into account the frictional resistance between the pipe and the ground.
１ｉｉ） 注入後９０日を経過すると地山と同程度の
強度、一般的には１〜２ｋｇｆ／ｃｍ″以上の強度とな
る必要がある。1ii) After 90 days have elapsed after injection, the strength must be comparable to that of the earth, generally 1 to 2 kgf/cm'' or higher.
ｉｉ） 管と地山の一体化のためブリージング率は５％
以下である必要がある。ii) Breathing rate is 5% due to integration of pipe and ground
Must be below.
本発明は、上記の問題点を解決するために、ベントナイ
トと、高吸水性樹脂および／またはメチルセルロースと
、水とよりなる従来の推進工法用滑材１ｔｎ”に、セメ
ント５０〜２５０ｋｇと、主な化学組成Ａｌ２Ｏ３ ２
０〜４０重量％（以下％と記す）、ＣａＯ３０〜５０％
、Ｓ０３ １０〜３０％を含有する水硬性物質２〜１
５ｋｇと。In order to solve the above-mentioned problems, the present invention adds 50 to 250 kg of cement to 1 ton of conventional propulsion lubricant consisting of bentonite, super absorbent resin and/or methyl cellulose, and water. Chemical composition Al2O3 2
0 to 40% by weight (hereinafter referred to as %), CaO 30 to 50%
, Hydraulic substance 2-1 containing 10-30% of S03
5 kg.
凝結遅延材１〜１０ｋｇとを添加した自硬性滑材である
。This is a self-hardening lubricant containing 1 to 10 kg of a setting retardant.
本発明の自硬性滑材は、セメントの添加により強度を発
現させ、水硬性物質によりブリージングを減少させ、セ
メントの添加による早期硬化を凝結遅延剤の添加によっ
て抑制したものである。The self-hardening lubricant of the present invention exhibits strength by adding cement, reduces breathing by using a hydraulic substance, and suppresses early hardening due to the addition of cement by adding a setting retarder.
本発明におけるセメントとしては、ポルトランドセメン
ト、高炉セメント、シリカセメント。The cement used in the present invention includes Portland cement, blast furnace cement, and silica cement.
フライアッシュセメント、土質安定用セメント等が使用
可能で、これ等のセメントはその特性、推進工事の状況
等を勘案して選択されるが、普通ポルトランドセメント
の入手が最も容易で好ましい。Fly ash cement, soil stabilization cement, etc. can be used, and these cements are selected taking into account their characteristics, the conditions of the promotion work, etc., but ordinary Portland cement is the most easily available and is preferred.
セメントの添加量は、硬化後の滑材の強度が地山の強度
と同程度になるように、用いるセメントの特性、地山の
強度等を勘案して定めるが、５０ｋｇ未満では強度が不
十分であり、２５０ｋｇを越えて添加して特に高強度を
発現させる必要はない。The amount of cement added is determined by taking into account the characteristics of the cement used and the strength of the ground so that the strength of the lubricant after hardening is comparable to the strength of the ground, but if it is less than 50 kg, the strength is insufficient. Therefore, it is not necessary to add more than 250 kg to develop particularly high strength.
ベントナイトを含有する滑材に単にセメントのみを添加
すると、滑材は硬化して強度を発現するがブリージング
が大きく自硬性滑材としては不適当である。そこでブリ
ージングを防止するために速やかに水和して結晶水の多
いエトリンガイトを生成してブリージングを極めて小さ
くする水硬性物質を添加する。When only cement is added to a bentonite-containing lubricant, the lubricant hardens and develops strength, but the lubricant suffers from significant breathing and is unsuitable as a self-hardening lubricant. Therefore, in order to prevent breathing, a hydraulic substance is added that quickly hydrates to produce ettringite with a large amount of crystallized water, thereby minimizing breathing.
本発明に用いる水硬性物質はエトリンガイトを生成させ
るために主な化学組成としてＡ２２０３２０〜４０％、
ＣａＯ ３０〜５０％、５ｏ３１０〜３０％をバランス
よく含有することが必要である。The hydraulic substance used in the present invention has a main chemical composition of A220320-40% to produce ettringite.
It is necessary to contain 30-50% of CaO and 10-30% of 5O3 in a well-balanced manner.
すなわち、Ａｌ２Ｏ３２０〜４０％
ＣａＯ３０〜５０％
３０３ １０〜３０％
の範囲を外れるとエトリンガイトが速やかで効果的に生
成せず、ブリージングの抑制作用が不十分となる。水硬
性物質としては、アライン系焼成物、水酸化アルミニウ
ムおよび半水石膏の混合物、アルミナセメント、高アル
ミナスラグおよび石膏の混合物等が用いられ、これ等の
うちアライン系焼成物、水酸化アルミニウムおよび半水
石膏の混合物がエトリンガイドの生成が効果的なので好
ましい。That is, if the content is outside the range of Al2O3 20-40% CaO30-50% 303 10-30%, ettringite will not be generated quickly and effectively, and the effect of suppressing breathing will be insufficient. As the hydraulic substance, Align-based calcined products, mixtures of aluminum hydroxide and hemihydrate gypsum, alumina cement, mixtures of high alumina slag and gypsum, etc. are used. A mixture of hydrogypsum is preferred because it is effective in producing ettrin guides.
水硬性物質の添加量は、２ｋｇ未満ではブリージング抑
制効果が不十分で管と地山の間の空隙が大きく、１５ｋ
ｇを越えて添加するとエトリンガイトの生成量が過大と
なって滑材の流動性が不十分となる。If the amount of hydraulic substance added is less than 2 kg, the effect of suppressing breathing will be insufficient and the void between the pipe and the ground will be large.
If it is added in excess of g, the amount of ettringite produced will be excessive and the fluidity of the lubricant will be insufficient.
凝結遅延剤は、セメントの水和反応を遅延させることに
より管の推進中は滑材の硬化を抑制するもので、通常の
セメント系の遅延剤であるリグニンスルホン酸とその塩
、オキシカルボン酸とその塩、ポリアルコール類、セル
ロース類、糖類、りん酸、弗化物、塩化マグネシウムそ
の他のハロゲン化マグネシウム、硝酸マグネシウム等の
マグネシウム化合物を用いることでも可詣であるが、酸
化亜鉛が遅延剤としての効果が長く持続し、かつ添加の
多少による遅延時間の変動が小さく最も適している。Setting retarders suppress the hardening of the lubricant during the propulsion of the pipe by delaying the hydration reaction of cement.Lignin sulfonic acid and its salts, oxycarboxylic acids, and It is also possible to use magnesium compounds such as its salts, polyalcohols, celluloses, sugars, phosphoric acid, fluorides, magnesium chloride and other magnesium halides, and magnesium nitrate, but zinc oxide has no effect as a retarder. It lasts for a long time and has little variation in delay time depending on the amount of addition, making it the most suitable.
凝結遅延剤の添加量は、用いたセメントの特性および添
加量、工事域の地温、推進工事の期間等により影響を受
けるが、１ｋｇ未満では効果が不十分で、１０ｋｇを越
えて添加すると強度発現が著しく遅くなり推進完了後長
期間硬化しなくなる。The amount of setting retarder added is influenced by the characteristics of the cement used, the amount added, the soil temperature of the construction area, the period of the promotion work, etc., but if it is less than 1 kg, the effect is insufficient, and if it is added in excess of 10 kg, the strength will not be improved. becomes extremely slow and does not harden for a long time after completion of propulsion.
用いたベントナイトと高吸水性樹１１とメチルセルロー
スと水とより成る滑材の組成を第１表に、アライン系焼
成物と水酸化アルミニウムと半水石膏とを混合した水硬
性物質の組成を第２表に示した。Table 1 shows the composition of the lubricant made of bentonite, superabsorbent wood 11, methyl cellulose, and water, and Table 2 shows the composition of the hydraulic material mixed with Align fired product, aluminum hydroxide, and hemihydrate gypsum. Shown in the table.
第１表に組成を示した従来の滑材に、普通ポルトランド
セメント、第２表に組成を示した水硬性物質および酸化
亜鉛を第３表の如く添加し、ホバートミキサで３分間混
練して本発明の自硬性滑材となし、その流動性、ブリー
ジング率および強度を測定して第３表に示した。To the conventional lubricant whose composition is shown in Table 1, ordinary Portland cement, hydraulic substances whose composition is shown in Table 2, and zinc oxide are added as shown in Table 3, and the mixture is kneaded for 3 minutes with a Hobart mixer. The fluidity, breathing rate and strength of the self-hardening lubricant of the invention are measured and shown in Table 3.
各測定方法は次の通りである。Each measurement method is as follows.
流動性：土木学会「ＰＣグラウト試験方法」によるＪＡ
ロート
ブリージング率：ＪＡＳＳ ５Ｔ−７０１ｒプレパツ
クドコンクリ一ト用注入モルタ
ルの試験方法」
強 度二流カ性があるものに対しては土質調査法による
ベーン試験を施し剪断強度を
求め、表中に記号τを付記して示し。Fluidity: JA according to the Japan Society of Civil Engineers “PC grout test method”
Roto breathing rate: JASS 5T-701r Test method for poured mortar for pre-packed concrete" For those with second-class strength, perform a vane test using the soil survey method to determine the shear strength, and the symbol in the table τ is shown with an additional note.
流動性がないもの対してはＪＩＳ Ａ１２１６Ｔｒ土
の一軸圧縮試験方法」
による−軸圧縮試験を施し１表中に記
号ｑｕを付して示した。試験材令は
３．７．２８．６３．９１日とした。For those with no fluidity, a -axial compression test was conducted according to JIS A1216 Tr Soil Uniaxial Compression Test Method, and the results are shown with the symbol qu in Table 1. The test material age was 3.7.28.63.91 days.
なお、ベントナイトのほかに高吸水性樹脂またはメチル
セルロースの何れかを用いた従来の滑材、普通ポルトラ
ンドセメント以外のセメント、アライン系以外の水硬性
物質、酸化亜鉛以外の凝結遅延剤を用いた場合にも、自
硬性滑材として使用し得る特性を示した。In addition, in addition to bentonite, when conventional lubricants using either superabsorbent resin or methyl cellulose, cement other than ordinary Portland cement, hydraulic substances other than Align type, and setting retarders other than zinc oxide are used, It also showed properties that could be used as a self-hardening lubricant.
本発明の自硬性滑材は注入時には粘性が小さく、２８日
材令までは滑材として摩擦減少剤としての性能を持ち、
推進終了後は十分に硬化して強度を発現し理想的な効果
を奏する。The self-hardening lubricant of the present invention has low viscosity at the time of injection, and has performance as a lubricant and a friction reducing agent until the age of 28 days.
After the propulsion is completed, it hardens sufficiently to develop strength and produce ideal effects.
Claims (1)
ルセルロースと、水とよりなる推進工法用滑材１ｍ＾２
に、セメント５０〜２５０ｋｇと、主な化学組成Ａｌ＿
２Ｏ＿３２０〜４０重量％、ＣａＯ３０〜５０重量％、 ＳＯ＿３１０〜３０重量％を含有する水硬性物質２〜１
５ｋｇと、凝結遅延材１〜１０ ｋｇとを添加してなることを特徴とする自硬性滑材。[Claims] 1. 1 m^2 of lubricating material for propulsion method consisting of bentonite, super absorbent resin and/or methyl cellulose, and water
50 to 250 kg of cement and the main chemical composition Al_
Hydraulic substance 2-1 containing 20-40% by weight of 2O_3, 30-50% by weight of CaO, 10-30% by weight of SO_3
5 kg and 1 to 10 kg of a setting retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10924986A JPH0737631B2 (en) | 1986-05-13 | 1986-05-13 | Self-hardening lubricant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10924986A JPH0737631B2 (en) | 1986-05-13 | 1986-05-13 | Self-hardening lubricant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62265395A true JPS62265395A (en) | 1987-11-18 |
| JPH0737631B2 JPH0737631B2 (en) | 1995-04-26 |
Family
ID=14505393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10924986A Expired - Lifetime JPH0737631B2 (en) | 1986-05-13 | 1986-05-13 | Self-hardening lubricant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737631B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08157823A (en) * | 1994-10-07 | 1996-06-18 | Nippon Shokubai Co Ltd | Cb mortar composition and suppression of permeation of cb mortar and fixing foundation structure in soil |
-
1986
- 1986-05-13 JP JP10924986A patent/JPH0737631B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08157823A (en) * | 1994-10-07 | 1996-06-18 | Nippon Shokubai Co Ltd | Cb mortar composition and suppression of permeation of cb mortar and fixing foundation structure in soil |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0737631B2 (en) | 1995-04-26 |
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