JP2005002583A - Construction method of underground impervious wall - Google Patents
Construction method of underground impervious wall Download PDFInfo
- Publication number
- JP2005002583A JP2005002583A JP2003164567A JP2003164567A JP2005002583A JP 2005002583 A JP2005002583 A JP 2005002583A JP 2003164567 A JP2003164567 A JP 2003164567A JP 2003164567 A JP2003164567 A JP 2003164567A JP 2005002583 A JP2005002583 A JP 2005002583A
- Authority
- JP
- Japan
- Prior art keywords
- water
- underground
- cement
- fine powder
- admixture
- 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
Images
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【0001】
【発明の属する技術分野】
本発明はモルタルまたはコンクリートからなる地中遮水壁の施工法に関する。
【0002】
【従来の技術】
地盤を掘削して構造物を構築する際には,周辺地盤からの地下水流入防止を目的として,掘削対象範囲の外周部に地中遮水壁を設ける場合がある。こうした場合の地中遮水壁の構築法にはいくつかの方法があるが,現地攪拌工法(代表的なものとしてSMW工法がある)がよく用いられる。
【0003】
現地攪拌工法では,地表に設置した機械から地中に鉛直に掘削すると共にその掘削穴に現地土と遮水機能をもつ材料を充填混合するものであり,機械の水平移動に伴って連続壁を地中に形成してゆくから,遮水壁の構築範囲内にシールドトンネル等や共同溝等の地下構造物が存在する場合には,このような地下構造物の下方の範囲に対しては,遮水壁を造ることはできない。
【0004】
このため,例えば特許文献1に提案されたような機械的な工夫をして,地下構造物の下方にも,スリット状の壁状の空間を掘削し(すかし堀り工法),この空間に何等かの材料を充填することによって,この部分にも遮水壁を構築することになる。その場合の充填材料としては,流動固化処理土(ベントナイトなどの粘土や現地発生土にセメントを配合し固化した粘土モルタル),地中連続壁用水中コンクリート,または水中不分離性コンクリートなどが考えられる。
【0005】
【特許文献1】特開平2002−332656号公報
【0006】
【発明が解決しようとする課題】
前記の充填材料として,流動固化処理土を用いた場合には,次のような問題が付随する。まずブリーディングを生じる。また,充填された材料は自重により圧密されるが,これらは配合上の水量が多い上に,脱水を抑止する性質の材料は配合されないので,脱水量が多くなる。ブリーディングや圧密により生じた水は地下構造物の下部に溜まるため,構造物下部界面付近の遮水性が確保されない。
【0007】
地下構造物の下方を特許文献1のようにして掘削する場合,一度にすべてを掘削することは構造物の安定上問題がある。したがって,図1に示したように,構造物(図1では共同溝)の直下を境にして,先ずその下方の片側を掘削し(図1では紙面の右側を掘削した状態を示している),この掘削したスリット状の空隙に材料を充填して施工を終え,次いで,反対側を同様に掘削し,材料充填することになる。この場合,遮水性を確保するには,後行の施工の際に,先行して構築した壁の一部を削り取ることによって,後行の壁と一体的に接合することが必要となる。ところが,前記のように地中連続壁用水中コンクリートや水中不分離性コンクリートを充填材料に使用したのでは,強度が高すぎて機械掘削に支障を来すことになる。
【0008】
本発明は,このような問題の解決を課題としたものである。
【0009】
【課題を解決するための手段】
本発明によれば,セメント,微粉末,細骨材および混和剤を,水セメント比300%以上,水/(セメント+微粉末)の体積比70〜200%で配合してなるスランプフローが600mm以上の高流動モルタルを練混ぜ,これを地中に打設して圧縮強度3.0N/mm2以下の遮水壁を構築する地中遮水壁の施工法を提供する。また本発明によれば,セメント,微粉末,細骨材,粗骨材および混和剤を,水セメント比300%以上,水/(セメント+微粉末)の体積比70〜200%で配合してなるスランプフローが600mm以上の高流動コンクリートを練混ぜ,これを地中に打設して機械掘削可能な(例えば圧縮強度3.0N/mm2以下の)遮水壁を構築する地中遮水壁の施工法を提供する。いずれの場合も混和剤としては,AE減水剤,高性能減水剤または高性能AE減水剤の少なくとも1種と,材料分離抵抗剤とを使用するのがよい。この施工法によれば,地中の打設箇所が地下構造物の下方位置であっても良好に施工することができる。
【0010】
【発明の実施の形態】
本発明者らは,前記の課題を解決すべく,すなわちブリーディングがなく,材料分離が抑制され,かたも機械掘削できるような低強度の遮水壁用の充填材を得るべく種々の試験を行ってきたが,セメントを結合材としたモルタルまたはコンクリートの配合を適切にコントロールすると,この問題が解決できることがわかった。その要旨は,次のとおりである。
【0011】
▲1▼.極低強度を実現するために,水セメント比(W/C)を300%以上に設定する。
▲2▼.材料の分離を抑制するために,微粉末を加えて水粉体体積比〔水/(セメント体積+微粉末体積)〕の比を70〜200%とする。
▲3▼.流動性と材料分離抵抗性を両立させるために,適正な混和剤を配合する。
【0012】
この条件▲1▼〜▲3▼を満たし,以下の使用材料および製造方法に従うことにより,ブリーディングがなく,材料分離が抑制され,機械掘削可能な遮水壁用コンクリートまたはモルタルを得ることができる。
【0013】
〔使用材料〕
セメント:市販のセメントが全て使用可能である。ただし,地中への六価クロムの溶出を考慮すると,高炉セメントが望ましい。
細骨材:コンクリート材料として適合する一般的な細骨材が使用可能である。
粗骨材:コンクリート材料として適合する一般的な粗骨材が使用可能である(モルタルの場合は不要)。
混和材(微粉末):コンクリート用材料として取り扱うことができ,セメントと同程度の比表面積を有し,且つそれ単体で水硬性を発揮しない微粉末であれば使用可能である。例としては,石灰石微粉末,フライアッシュ,高炉スラグ微粉末などが挙げられる。
混和剤▲1▼:セメントを含む微粉末の分散を実現できる混和剤であれば使用可能である。例としては,高性能AE減水剤,高性能減水剤,AE減水剤などが挙げられる。
混和剤▲2▼:脱水を含む材料分離に対して抵抗する機能を有する混和剤であれば使用可能である。例としては,特殊界面活性剤(A剤およびB剤からなる花王株式会社製の商品名ビスコトップ),セルロースや増粘多糖類を主成分とする増粘剤が挙げられる。
【0014】
〔製造方法〕
製造方法1:生コンプラントにおいて,上述の材料を一括で練り混ぜる。
製造方法2:生コンプラントで,上述の材料のうち,混和剤▲1▼の一部と混和剤▲2▼の一部または全部を除く材料を練混ぜ,アジテータ車が現場に到達した時点でアジテータ車に残りの材料を投入し,1〜5分間高速攪拌を行なう。
製造方法3:生コンプラントで,上述の材料のうち,混和剤▲2▼の一部または全部を除く材料を練混ぜ,アジテータ車が現場に到達した時点でアジテータ車に残りの材料を投入し,1〜5分間高速攪拌を行なう。
【0015】
このようにして,本発明によると,ブリーディング0%で材料分離のない高流動性のモルタルまたはコンクリートが得られ,これを地中に打設することによって機械掘削可能な例えば圧縮強度3.0N/mm2以下の遮水壁を構築することができる。
【0016】
【実施例】
表1に示した材料を使用して,表2に示した配合のコンクリートまたはモルタルを練り混ぜ,各配合のフレッシュ性状と硬化性状を表3に示した。
【0017】
【表1】
【0018】
【表2】
【0019】
【表3】
【0020】
表3の結果に見られるように,コンクリート(No.1,3および5)ではスランプフロー655〜710mmでブリーディング0%の高流動性のものが得られ,モルタル(No.2,4および5)ではスランプフロー715〜825mmでブリーディング0〜0.14%の高流動性のものが得られ,いずれも,地下構造物の下部における遮水の確実性について問題のないものであった。
【0021】
そして,圧縮強度については,材齢7日で3.8〜13.7kgf/cm2 (0.37〜1.34N/mm2),材齢28日で9.6〜26.0kgf/cm2 (0.94〜2.55N/mm2)であり,想定される機械掘削の能力(ほぼ35kgf/cm2 =3.4N/mm2)に対して,十分に小さい強度レベルを実現しており,透水係数も10−6〜10−7のオーダーであり,確実な遮水性能を期待できる。また,地中構造物として問題になると考えられる六価クロムの溶出についても極めて微量であり,法令に定める基準値(0.05mg/L)よりも十分に小さい値を示している。
【0022】
【発明の効果】
以上説明したように,本発明によると,ブリーディングを生ぜず,自重による圧密状況下でも脱水が生じないモルタルまたはコンクリートを使用するので,地下構造物の下方位置でも遮水壁を構築することができる。そして,このモルタルまたはコンクリートは高い流動性と自己充填性を有し且つ高い材料不分離性を有するので均質で高い遮水能を有する遮水壁を構築できると共に,混和剤の組み合わせによっては完全な水中不分離性を付与して水中打設することも可能であり,しかも,形成される遮水壁は機械掘削可能な極低強度を有するので,特に地下構造物の下方位置での遮水壁の施工性の向上に貢献するところが大きい。また市販の材料が使用でき,通常の生コンプラントで製造でき且つポンプ圧送ができるので,コスト面および施工面でも有利である。
【図面の簡単な説明】
【図1】地下構造物(共同溝)の下方に遮水壁を形成するさいに採用されるすかし掘り法の例を示す略断面図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method for underground impermeable walls made of mortar or concrete.
[0002]
[Prior art]
When constructing a structure by excavating the ground, an underground impermeable wall may be provided at the outer periphery of the excavation target area in order to prevent inflow of groundwater from the surrounding ground. There are several methods for constructing underground impermeable walls in such cases, but the local agitation method (typically the SMW method) is often used.
[0003]
In the local agitation method, the machine installed on the surface is excavated vertically into the ground and the excavation hole is filled with the local soil and a material having a water-impervious function. When underground structures such as shield tunnels and joint grooves exist within the construction area of the impermeable walls, the area below such underground structures It is not possible to build a water barrier.
[0004]
For this reason, for example, a mechanical device as proposed in Patent Document 1 is used to excavate a slit-like wall-like space below the underground structure (watermarking method). By filling with some material, a water-impervious wall is also constructed in this part. In that case, fluidized soil (clay such as bentonite and clay mortar solidified with cement from local soil), underwater concrete for underground underground walls, or underwater non-separable concrete can be considered as the filling material. .
[0005]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-332656 [0006]
[Problems to be solved by the invention]
When fluidized soil is used as the filling material, the following problems are accompanied. First, bleeding occurs. In addition, the filled material is consolidated by its own weight. However, since these materials have a large amount of water in addition to mixing the material having the property of inhibiting dehydration, the amount of dehydration increases. The water generated by bleeding and consolidation accumulates in the lower part of the underground structure, so that the water barrier near the lower interface of the structure is not secured.
[0007]
When excavating the lower part of an underground structure like patent document 1, excavating all at once has a problem on the stability of a structure. Therefore, as shown in FIG. 1, with the boundary immediately below the structure (the common groove in FIG. 1), the lower side is first excavated (FIG. 1 shows the state where the right side of the page is excavated). Then, the excavated slit-shaped gap is filled with material to finish the construction, and then the opposite side is similarly excavated and filled with material. In this case, in order to ensure water shielding, it is necessary to integrally bond with the succeeding wall by scraping off a part of the previously constructed wall during the subsequent construction. However, if underwater concrete for underground continuous walls or underwater non-separable concrete is used as the filling material as described above, the strength is too high, which hinders machine excavation.
[0008]
The present invention aims to solve such a problem.
[0009]
[Means for Solving the Problems]
According to the present invention, the slump flow obtained by blending cement, fine powder, fine aggregate and admixture at a water cement ratio of 300% or more and a water / (cement + fine powder) volume ratio of 70 to 200% is 600 mm. The construction method of the underground impermeable wall which mixes the above high fluid mortar, and casts this in the ground and constructs the impermeable wall having a compressive strength of 3.0 N / mm 2 or less is provided. Further, according to the present invention, cement, fine powder, fine aggregate, coarse aggregate and admixture are mixed at a water cement ratio of 300% or more and a water / (cement + fine powder) volume ratio of 70 to 200%. underground water shield consisting slump flow kneading the above high-flow concrete 600 mm, to construct a machine drilling possible (e.g. compressive strength 3.0 N / mm 2 or less) is impervious wall by Da設it in the ground Provide wall construction methods. In any case, as the admixture, at least one of an AE water reducing agent, a high performance water reducing agent or a high performance AE water reducing agent and a material separation resistance agent are preferably used. According to this construction method, even if the underground placement site is below the underground structure, the construction can be carried out satisfactorily.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present inventors have conducted various tests to solve the above-described problems, that is, to obtain a filler material for a low-strength impermeable wall that does not have bleeding, suppresses material separation, and can be mechanically excavated. However, it has been found that this problem can be solved by properly controlling the composition of mortar or concrete with cement as a binder. The summary is as follows.
[0011]
(1). In order to realize extremely low strength, the water cement ratio (W / C) is set to 300% or more.
(2). In order to suppress the separation of the material, fine powder is added so that the ratio of water powder volume ratio [water / (cement volume + fine powder volume)] is 70 to 200%.
(3). In order to achieve both fluidity and material separation resistance, an appropriate admixture is added.
[0012]
By satisfying these conditions (1) to (3) and following the following materials and production methods, there can be obtained concrete or mortar for impermeable walls capable of machine excavation without bleeding and by preventing material separation.
[0013]
[Materials used]
Cement: All commercially available cement can be used. However, considering the elution of hexavalent chromium into the ground, blast furnace cement is desirable.
Fine aggregate: A general fine aggregate suitable as a concrete material can be used.
Coarse aggregate: General coarse aggregate suitable as concrete material can be used (not necessary for mortar).
Admixture (fine powder): Any fine powder that can be handled as a concrete material, has a specific surface area comparable to cement, and does not exhibit hydraulic properties by itself can be used. Examples include fine limestone powder, fly ash, and blast furnace slag fine powder.
Admixture (1): Any admixture that can realize dispersion of fine powder containing cement can be used. Examples include high performance AE water reducing agents, high performance water reducing agents, AE water reducing agents, and the like.
Admixture (2): Any admixture having a function of resisting material separation including dehydration can be used. Examples include special surfactants (trade name Viscotop manufactured by Kao Corporation consisting of agent A and agent B), thickeners mainly composed of cellulose and thickening polysaccharides.
[0014]
〔Production method〕
Manufacturing method 1: The above-mentioned materials are kneaded together in a raw plant.
Manufacturing method 2: In the raw plant, the materials mentioned above except for a part of the admixture (1) and a part or all of the admixture (2) are mixed, and when the agitator vehicle reaches the site, the agitator Put the remaining materials into the car and stir at high speed for 1-5 minutes.
Manufacturing method 3: In the raw plant, the materials other than part or all of the admixture (2) are mixed, and when the agitator vehicle reaches the site, the remaining materials are put into the agitator vehicle. Stir at high speed for 1-5 minutes.
[0015]
Thus, according to the present invention, a mortar or concrete having a high fluidity with 0% bleeding and no material separation can be obtained. A water-impervious wall of 2 mm or less can be constructed.
[0016]
【Example】
Using the materials shown in Table 1, concrete or mortar with the composition shown in Table 2 was mixed, and the fresh properties and curing properties of each formulation were shown in Table 3.
[0017]
[Table 1]
[0018]
[Table 2]
[0019]
[Table 3]
[0020]
As can be seen from the results in Table 3, concrete (No. 1, 3 and 5) has a slump flow of 655 to 710 mm and a high fluidity of 0% bleeding and mortar (No. 2, 4 and 5). Then, a slump flow of 715 to 825 mm and a high fluidity of bleeding of 0 to 0.14% were obtained, and in all cases, there was no problem with the reliability of water shielding in the lower part of the underground structure.
[0021]
Then, the compressive strength, 3.8~13.7kgf / cm 2 (0.37~1.34N / mm 2) at an age of 7 days, 9.6~26.0kgf / cm 2 at an age of 28 days (0.94 to 2.55 N / mm 2 ), and a sufficiently low strength level is realized for the expected machine excavation capability (approximately 35 kgf / cm 2 = 3.4 N / mm 2 ). The water permeability coefficient is on the order of 10 −6 to 10 −7 , and reliable water shielding performance can be expected. In addition, the elution of hexavalent chromium, which is considered to be a problem as an underground structure, is extremely small and shows a value sufficiently smaller than the standard value (0.05 mg / L) stipulated by law.
[0022]
【The invention's effect】
As described above, according to the present invention, the use of mortar or concrete that does not cause bleeding and does not cause dehydration even under the compaction condition due to its own weight, so that the impermeable wall can be constructed even at the lower position of the underground structure. . And this mortar or concrete has high fluidity, self-filling property and high material inseparability, so it can construct a water-impervious wall with a homogeneous and high water-impervious ability. It is possible to cast underwater with inseparability in the water, and the formed impermeable walls have extremely low strength that can be excavated by machinery, so the impermeable walls especially at the lower position of underground structures There is a great contribution to improving the workability. Moreover, since a commercially available material can be used, it can be manufactured in a normal raw plant and can be pumped, it is advantageous in terms of cost and construction.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing an example of a water digging method employed when forming a water shielding wall below an underground structure (joint groove).
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003164567A JP4425570B2 (en) | 2003-06-10 | 2003-06-10 | Construction method of underground impermeable walls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003164567A JP4425570B2 (en) | 2003-06-10 | 2003-06-10 | Construction method of underground impermeable walls |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005002583A true JP2005002583A (en) | 2005-01-06 |
JP4425570B2 JP4425570B2 (en) | 2010-03-03 |
Family
ID=34091301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003164567A Expired - Fee Related JP4425570B2 (en) | 2003-06-10 | 2003-06-10 | Construction method of underground impermeable walls |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4425570B2 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008150782A (en) * | 2006-12-14 | 2008-07-03 | Fujita Corp | Filler and its manufacturing method |
JP2008162831A (en) * | 2006-12-27 | 2008-07-17 | Kajima Corp | Hydraulic kneaded material |
JP2009001446A (en) * | 2007-06-21 | 2009-01-08 | Chubu Electric Power Co Inc | Gap-filling filler and method of manufacturing the same |
JP2011214399A (en) * | 2011-08-04 | 2011-10-27 | Fujita Corp | Filler |
JP2011241679A (en) * | 2011-08-04 | 2011-12-01 | Fujita Corp | Filler |
JP2015221730A (en) * | 2014-05-22 | 2015-12-10 | 東京電力株式会社 | Cement-based material, cement-based material filling method and prepacked concrete construction method |
CN106747642A (en) * | 2017-03-06 | 2017-05-31 | 龚家红 | Environmental protection sound insulation water-proof concrete wall brick and preparation method thereof |
JP2018035021A (en) * | 2016-08-30 | 2018-03-08 | 五洋建設株式会社 | Low strength concrete, and manufacturing method of low strength concrete |
JP2020001205A (en) * | 2018-06-26 | 2020-01-09 | 信越化学工業株式会社 | Method for producing mortar composition |
JP2020033207A (en) * | 2018-08-28 | 2020-03-05 | 太平洋マテリアル株式会社 | Underwater inseparable mortar composition and mortar thereof |
CN115650668A (en) * | 2022-10-27 | 2023-01-31 | 四川能投建工集团有限公司 | Construction method for controlling concrete cracks of building wall |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103244145B (en) * | 2013-05-29 | 2016-04-20 | 唐山开滦广汇设备制造有限公司 | Underground coal mine fire dam resistance to compression pressure release brick and building method thereof |
CN104030619A (en) * | 2014-05-21 | 2014-09-10 | 甘肃蔚蓝建科新材料股份有限公司 | Steel tube concrete |
CN104446115B (en) * | 2014-11-18 | 2016-08-24 | 桂林华越环保科技有限公司 | A kind of Concrete synergist |
CN106517904B (en) * | 2016-11-02 | 2018-10-12 | 湖南星星中南环保材料有限公司 | A kind of cementing water-permeable brick of organo-mineral complexing and preparation method thereof |
CN107840610B (en) * | 2018-01-04 | 2019-12-31 | 西南石油大学 | High-strength permeable concrete material and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5915119A (en) * | 1982-07-16 | 1984-01-26 | Kajima Corp | Construction of wall type underground structure |
JPS63284313A (en) * | 1987-05-18 | 1988-11-21 | Kajima Corp | Construction of underground continuous wall |
JPH0688332A (en) * | 1992-03-17 | 1994-03-29 | Kubota Corp | Casting method for vessel-like steel pipe sheet pile |
JPH0776825A (en) * | 1993-09-07 | 1995-03-20 | Kajima Corp | Construction of underground continuous concrete wall |
JP2001329531A (en) * | 2000-05-24 | 2001-11-30 | Kajima Corp | Impervious wall and construction method therefor |
-
2003
- 2003-06-10 JP JP2003164567A patent/JP4425570B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5915119A (en) * | 1982-07-16 | 1984-01-26 | Kajima Corp | Construction of wall type underground structure |
JPS63284313A (en) * | 1987-05-18 | 1988-11-21 | Kajima Corp | Construction of underground continuous wall |
JPH0688332A (en) * | 1992-03-17 | 1994-03-29 | Kubota Corp | Casting method for vessel-like steel pipe sheet pile |
JPH0776825A (en) * | 1993-09-07 | 1995-03-20 | Kajima Corp | Construction of underground continuous concrete wall |
JP2001329531A (en) * | 2000-05-24 | 2001-11-30 | Kajima Corp | Impervious wall and construction method therefor |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008150782A (en) * | 2006-12-14 | 2008-07-03 | Fujita Corp | Filler and its manufacturing method |
JP2008162831A (en) * | 2006-12-27 | 2008-07-17 | Kajima Corp | Hydraulic kneaded material |
JP2009001446A (en) * | 2007-06-21 | 2009-01-08 | Chubu Electric Power Co Inc | Gap-filling filler and method of manufacturing the same |
JP2011214399A (en) * | 2011-08-04 | 2011-10-27 | Fujita Corp | Filler |
JP2011241679A (en) * | 2011-08-04 | 2011-12-01 | Fujita Corp | Filler |
JP2015221730A (en) * | 2014-05-22 | 2015-12-10 | 東京電力株式会社 | Cement-based material, cement-based material filling method and prepacked concrete construction method |
JP2018035021A (en) * | 2016-08-30 | 2018-03-08 | 五洋建設株式会社 | Low strength concrete, and manufacturing method of low strength concrete |
CN106747642A (en) * | 2017-03-06 | 2017-05-31 | 龚家红 | Environmental protection sound insulation water-proof concrete wall brick and preparation method thereof |
JP2020001205A (en) * | 2018-06-26 | 2020-01-09 | 信越化学工業株式会社 | Method for producing mortar composition |
JP2020033207A (en) * | 2018-08-28 | 2020-03-05 | 太平洋マテリアル株式会社 | Underwater inseparable mortar composition and mortar thereof |
JP7103893B2 (en) | 2018-08-28 | 2022-07-20 | 太平洋マテリアル株式会社 | Insoluble mortar composition in water and its mortar |
CN115650668A (en) * | 2022-10-27 | 2023-01-31 | 四川能投建工集团有限公司 | Construction method for controlling concrete cracks of building wall |
Also Published As
Publication number | Publication date |
---|---|
JP4425570B2 (en) | 2010-03-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4425570B2 (en) | Construction method of underground impermeable walls | |
JP6276027B2 (en) | Fast-curing buried material | |
WO2005095300A1 (en) | Concrete composition, process for producing the same, method of regulating viscosity, and method of constructing cast-in-place concrete pile from the concrete composition | |
JP5999718B2 (en) | Underground impermeable wall construction material | |
JP4109376B2 (en) | Method for producing soil mortar using lime-treated soil and embankment method using the same | |
KR20140098416A (en) | Solidified soil forming method for improving ground using | |
JP2882259B2 (en) | Hydraulic material and self-hardening stabilizer | |
JP6508526B2 (en) | Weight fluidization treated soil | |
JP3443597B2 (en) | Flowable backfill material | |
JP6776391B2 (en) | Ground improvement materials, cement milk, and ground improvement methods | |
JP7265691B2 (en) | Soil improvement method | |
JP3116766B2 (en) | Fluidization method of fine particle aggregate | |
JPH1060470A (en) | Composition for one powder type slow-hardening back-filling material | |
JP3680866B2 (en) | Manufacturing method of self-hardening stabilizer and underground wall construction method | |
JP7441685B2 (en) | Fluidized soil and its manufacturing method | |
JP4620824B2 (en) | Manufacturing method of backfill soil | |
JP2001225037A (en) | Seepage control and bank protection construction method of waste disposal site | |
JP2004183364A (en) | Underground continuous cut off wall structure in land | |
JP3721495B2 (en) | Method of manufacturing filler for soil cement column wall construction | |
JPH0692709A (en) | Grout material for fixing underwater structure and installation method therefor | |
JP4651403B2 (en) | Filler | |
JPH1036838A (en) | Composition for single powder type, gradually hardenable back-filling material | |
JP2003138551A (en) | Fluidization treated soil | |
JP2840879B2 (en) | Self-hardening backfill material | |
JP3261647B2 (en) | One-powder type composition for back hardening material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20051228 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070710 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070910 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20071030 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080311 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091209 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4425570 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121218 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151218 Year of fee payment: 6 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |