JPS595105B2 - Pipe for propulsion construction - Google Patents
Pipe for propulsion constructionInfo
- Publication number
- JPS595105B2 JPS595105B2 JP54016216A JP1621679A JPS595105B2 JP S595105 B2 JPS595105 B2 JP S595105B2 JP 54016216 A JP54016216 A JP 54016216A JP 1621679 A JP1621679 A JP 1621679A JP S595105 B2 JPS595105 B2 JP S595105B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- propulsion
- blast furnace
- weight
- coating
- 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
Links
- 238000010276 construction Methods 0.000 title description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 239000002893 slag Substances 0.000 claims description 21
- 239000008199 coating composition Substances 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000011398 Portland cement Substances 0.000 claims description 10
- 229920000620 organic polymer Polymers 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000011400 blast furnace cement Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
この発明は地下配管に際して、地盤を開削することなく
、地面よ引裏立坑のみを掘削し、立坑内より管を推進せ
しめて掘削する工法、即ち推進工法に使用される管に係
るものである。[Detailed Description of the Invention] This invention is used for a method of excavating underground piping by excavating only a vertical shaft from the ground without excavating the ground and propelling the pipe from inside the shaft, that is, a propulsion method. It is related to pipes.
従来よりー般に推進工法を実施するに際して、埋設すべ
き鋼管（本管）を直接地中に推進せしめ５ ると、該鋼
管の外周向が損傷し、塗装が剥離し、防食性が失われる
ので、埋設すべき鋼管（本管）より大径の鋼管、ヒユー
ム管等を鞘管として用い、鞘管を推進せしめて掘削した
後、鞘管内に本管を引込み、鞘管と本管の間の空間には
モルタルを圧１０入充填する等の方が行われている。Conventionally, when carrying out the propulsion method, if the steel pipe (main pipe) to be buried is directly pushed into the ground5, the outer circumference of the steel pipe will be damaged, the coating will peel off, and corrosion protection will be lost. Therefore, a steel pipe, hume pipe, etc. with a larger diameter than the steel pipe (main pipe) to be buried is used as the sheath pipe, and after the sheath pipe is propelled and excavated, the main pipe is pulled into the sheath pipe, and the space between the sheath pipe and the main pipe is It is common practice to fill the space with mortar to a pressure of 10 cm.
しかしながらかかる推進工法においては、本管以外にこ
れより大径の鞘管を使用する為、経費が嵩むのみならず
、掘削断面の増加による推進費、残土処理費の増加、圧
入モルタルの費用を必要と１５し、労力、工期を多く要
する。However, in this propulsion method, a larger diameter sheath pipe is used in addition to the main pipe, which not only increases costs, but also requires an increase in the propulsion cost due to an increase in the excavation cross section, an increase in the disposal cost of residual soil, and the cost of press-in mortar. 15, which requires a lot of labor and construction time.
また内側鋼管と外側鋼管の間にモルタル等を充填し、前
述の鞘管、本管及び圧入モルタルを予め一体として構成
した二重管構造の管を用いた推進工法も行われているが
、該工法も管体費用及び工■０ 事費が嵩む不利がある
。There is also a propulsion method using a double-pipe structure in which mortar is filled between the inner steel pipe and the outer steel pipe, and the above-mentioned sheath pipe, main pipe, and press-fit mortar are integrated in advance. The construction method also has the disadvantage of increasing pipe costs and construction costs.
この発明の目的は、推進工法に使用し、直接地中に推進
せしめても、損傷することが殆んどなく、そのまま埋設
本管として使用することができる推進工事用管を提供す
るにある。An object of the present invention is to provide a propulsion construction pipe that is used in a propulsion construction method and is hardly damaged even if it is propelled directly into the ground, and can be used as a buried main pipe as it is.
フ５ この発明の他の目的は、推進工法をより少ない費
用、労力、工期で実施することができる推進工事用管を
提供するにある。F5 Another object of the present invention is to provide a pipe for propulsion work that allows the propulsion method to be carried out with less cost, labor, and construction period.
この発明による推進工事用管は、鋼管、メッキ鋼管又は
塗装鋼管の外周面を、ポルトランドセメ１０ ント、Ｏ
、８５７Ｒ、ｍふるいを全部通過し、Ｏ、２５Ｗ！Ｅふ
るいに８５重量％以上とどまる高炉水滓および有機重合
体水性エマルジョンを含む被覆組成物にて、被覆してな
る管である。In the pipe for propulsion work according to the present invention, the outer peripheral surface of the steel pipe, plated steel pipe or painted steel pipe is made of Portland cement, O
, 857R, passed all the m sieves, O, 25W! This tube is coated with a coating composition containing blast furnace water slag and an aqueous organic polymer emulsion that remains on the E-sieve in an amount of 85% or more by weight.
この発明による推進工事用管の好ましい態様にノ５ お
いては前記の被覆組成物に粒子径が０．８５〜０．１ｕ
の珪砂が含まれる。In a preferred embodiment of the pipe for propulsion work according to the present invention, the coating composition has a particle size of 0.85 to 0.1 u.
Contains silica sand.
この発明による推進工事用管における被覆組成物中のポ
ルトランドセメントは強度が大で耐久性のあることは衆
知である。It is well known that the Portland cement used in the coating composition of the pipe for propulsion work according to the present invention has high strength and durability.
またヒユーム管の場合の如く特別の施工をしたときは格
別であるが、数ｕ程度の塗膜とした場合、クラツクが入
り剥離し易いこともよく知られている。この発明の組成
物においては特別な組成によりボルトランドセメントの
長所を生かし、欠点が解消せしめられている。ポルトラ
ンドセメントの例としては、普通一、早強−、白色−、
ポルトランドセメント等があげられる。この発明におけ
る被覆組成物の次の主要成分は高炉水滓である。Furthermore, it is well known that when a coating film of several micrometers is used, it is easy to crack and peel off, although this is especially true when special construction is performed such as in the case of humid pipes. The composition of this invention utilizes the advantages of Boltland cement and eliminates its disadvantages through a special composition. Examples of Portland cement are normal, early strength, white,
Examples include Portland cement. The next major component of the coating composition in this invention is blast furnace slag.
高炉水滓は緩結性と低価格であることより、ポルトラン
ドセメントクリンカと混合して粉砕され、高炉セメント
として利用されている。この発明における高炉水滓は高
炉セメントに用いられる高炉水滓と目的を異にし、その
形態も異なり、従つてその効果も異なる。この発明にお
ける高炉水滓には、０．８５藺ふるいを全部通過し、０
．２５ｕふるいに８５重量％以上とどまるものが選ばれ
る。高炉水滓は活性で、セメント中の遊離石灰と反応し
て難溶性の珪酸石灰を生成し、塗層を安定化する。Blast furnace water slag is slow-setting and inexpensive, so it is mixed with Portland cement clinker and ground and used as blast furnace cement. The purpose of the blast furnace water slag in this invention is different from the blast furnace water slag used for blast furnace cement, its form is also different, and its effects are also different. The blast furnace water slag in this invention passes through a 0.85 sieve and has a 0.85 sieve.
．． Those that retain 85% or more by weight on a 25u sieve are selected. Blast furnace water slag is active and reacts with free lime in cement to produce hardly soluble silicate lime, which stabilizes the paint layer.
この発明における高炉水滓は粒度が概ね０．８５〜０．
２５ｖＩｔであるので、混練時の水分を吸着して保有し
、塗層硬化時の急速な乾燥をさまたげ、微細なクラツク
が発生することを防止する。また高炉水滓は耐摩耗性と
強度の向上に役立つている。また強度が大で、粒状をな
しているので骨材としての珪砂等の代替として使用する
ことができる。これは高炉水滓が珪砂より低価格である
のチで有利である。The blast furnace water slag in this invention has a particle size of approximately 0.85-0.
Since it is 25vIt, it adsorbs and retains moisture during kneading, prevents rapid drying during coating layer curing, and prevents minute cracks from occurring. Blast furnace water slag also helps improve wear resistance and strength. Also, since it has high strength and is in granular form, it can be used as an alternative to silica sand, etc. as an aggregate. This is advantageous because blast furnace water slag is cheaper than silica sand.
この発明の目的を達成する為のこの発明の組成物中の高
炉水滓は、０．８５ｍ．７！ｌふるいを全部通過し、０
．２５ｖＩｔふるいに８５重量％以上とどまることが要
求されるが、この発明における組成物は高炉セメントに
おける如き微粉砕された高炉水滓が混入されることを排
除するものでない。The blast furnace water slag in the composition of this invention to achieve the object of this invention is 0.85 m. 7! Passed through all sieves, 0
．． Although required to remain at least 85% by weight on a 25vIt sieve, the composition of the present invention does not preclude the inclusion of pulverized blast furnace water slag, such as in blast furnace cement.
高炉水滓はポルトランドセメント１００重量部に対して
３０〜４００重量部用いられる。The blast furnace water slag is used in an amount of 30 to 400 parts by weight per 100 parts by weight of Portland cement.
この発明における被覆組成物の他の主要成分は有機重合
体水性エマルジヨンである。The other major component of the coating composition in this invention is an organic polymer aqueous emulsion.
これらの例としてはラテツクス系、アスフアルト系、ア
クリル系、酢酸ビニール系、ビニールアルコール系など
があげられる。これらのエマルジヨンは分散剤としての
ノニオン系またはカチオン系界面活性剤などを含み３０
〜５０実量％の固形物濃度で市販され、容易に入手する
ことができる。この発明における組成物の混練溶剤とし
て有機重合体水性エマルジヨンはポルトランドセメント
と高炉水滓の合量１００重量部に対して、固形物として
５〜４０重量部使用される。この水性エマルジヨンは塗
層内粒子の接着を強くすると共に、鋼材またはメツキ層
、塗装層への付着力を大にする。この為には最低５重量
％必要である。エマルジヨンの量が多過ぎると硬化乾燥
に時間を多く要し、被覆層が軟くなり弾性を増す。エマ
ルジヨンの量はセメントと高炉水滓の合量１００重量部
に対して最高４０重量部におさえられるが、通常コンパ
ウンド（セメント＋高炉水滓、必要に応じてセメント＋
高炉水滓＋珪砂）１００重量部に対してエマルジヨンの
量が約１０重量部になるように使用される。これら水性
エマルジヨンはそれぞれ固有の特性があるので、この発
明における組成物においては、２種以上の有機重合体水
性エマルジヨンを混用することが望ましい。この発明の
推進工事用管の好ましい態様においては、被覆組成物に
粒子径０．８５〜０．１藺の珪砂が含まれる。Examples of these include latex, asphalt, acrylic, vinyl acetate, and vinyl alcohol. These emulsions contain nonionic or cationic surfactants as dispersants.
It is commercially available and readily available at a solids concentration of ~50% by weight. The aqueous organic polymer emulsion used as a kneading solvent in the composition of the present invention is used in an amount of 5 to 40 parts by weight as a solid substance per 100 parts by weight of the total amount of Portland cement and blast furnace slag. This water-based emulsion strengthens the adhesion of particles within the coating layer and increases the adhesion force to steel materials, plating layers, and paint layers. For this purpose, a minimum of 5% by weight is required. If the amount of emulsion is too large, it will take a long time to harden and dry, and the coating layer will become soft and elastic. The amount of emulsion is limited to a maximum of 40 parts by weight per 100 parts by weight of cement and blast furnace water slag, but usually the compound (cement + blast furnace water slag, cement + blast furnace water slag if necessary)
The emulsion is used in an amount of about 10 parts by weight based on 100 parts by weight of blast furnace water slag + silica sand. Since each of these aqueous emulsions has unique characteristics, it is desirable to use a mixture of two or more types of organic polymer aqueous emulsions in the composition of the present invention. In a preferred embodiment of the pipe for propulsion work of the present invention, the coating composition contains silica sand with a particle size of 0.85 to 0.1 mm.
珪砂は骨材として被覆層の強度向上に寄与し、平滑な被
覆層面が得られる。この発明の推進工事用管は、鋼管等
の外周面に、上述の如きポルトランドセメント、高炉水
滓、有機重合体水性エマルジヨン等を均一に混合し、被
覆組成物とし、この組成物にて被覆層が形成される。Silica sand contributes to improving the strength of the coating layer as an aggregate, and provides a smooth surface of the coating layer. In the pipe for propulsion work of the present invention, a coating composition is prepared by uniformly mixing the above-mentioned Portland cement, blast furnace water slag, organic polymer aqueous emulsion, etc. on the outer peripheral surface of a steel pipe, etc., and a coating layer is formed using this composition. is formed.
この被覆組成物には、勿論水硬成分として、また混練溶
剤として水が添加される。この水は概ね有機重合体水性
エマルジヨンの水でまかなわれるが、必要に応じて更に
僅かな水が添加される。この混練された被覆組成物は鋼
管等の外周面に、吹付け、こて、刷毛などで塗装され、
常温で養生することにより、推進工事用管としての目的
を充分果すことができるこの発明の管が得られる。被覆
組成物の成分割合及ひ被覆厚は、推進距離、地質等に基
いて決められる。次にこの発明による推進工事用管を推
進工法における推進用管として使用する場合に必要な次
の物性値について試験した結果について述べる。Of course, water is added to this coating composition as a hydraulic component and as a kneading solvent. This water is generally covered by the water of the aqueous organic polymer emulsion, but a small amount of water may be added if necessary. This kneaded coating composition is applied to the outer peripheral surface of a steel pipe, etc. by spraying, troweling, brushing, etc.
By curing at room temperature, the pipe of the present invention can be obtained which can fully fulfill its purpose as a pipe for propulsion work. The component ratio and coating thickness of the coating composition are determined based on the propulsion distance, geology, etc. Next, the results of tests regarding the following physical property values required when the propulsion construction pipe according to the present invention is used as a propulsion pipe in a propulsion method will be described.
（１）被覆層と鋼管の接着力（２）被覆層の衝撃強度
？）被覆層の曲げ強度
（４）被覆層の圧縮強度
（５）被覆層の耐摩耗性
この試験に用いた被覆組成物は、ポルトランドセメント
２０重量部、高炉水滓４０重量部、珪砂４０重量部、ラ
テツクスーアスフアルト系混合有機重合体水性エマルジ
ヨン（固形物濃度３５重量％）１８重量部及び別に水１
２重量部よりなる。(1) Adhesive strength between the coating layer and steel pipe (2) Impact strength of the coating layer? ) Bending strength of the coating layer (4) Compressive strength of the coating layer (5) Abrasion resistance of the coating layer The coating composition used in this test was 20 parts by weight of Portland cement, 40 parts by weight of blast furnace water slag, and 40 parts by weight of silica sand. , 18 parts by weight of latex-asphalt mixed organic polymer aqueous emulsion (solids concentration 35% by weight) and 1 part by weight of water separately.
Consisting of 2 parts by weight.
尚この配合の被覆組成物はこの発明に使用される被覆組
成物中で最も低い特性を示すものと推定されるものであ
る。平らな鋼板上にポリエチレン被覆を行い、その上に
前記の被覆組成物を３ｕ厚に被覆し、それを２８日間常
温で室内養生して試験片とした。It is estimated that the coating composition with this formulation exhibits the lowest properties among the coating compositions used in the present invention. A polyethylene coating was applied to a flat steel plate, and the above-mentioned coating composition was coated thereon to a thickness of 3 μm, which was then cured indoors at room temperature for 28 days to prepare a test piece.
尚鋼板上にポリエチレン被覆を行つたのは、本発明に使
用される鋼管、メツキ鋼管、塗装鋼管中ポリエチレン被
覆鋼管が本発明の被覆組成物との接着性が最も悪いと想
定されるからである。（１）被覆層と鋼管の接着力
被覆層とポリエチレン層との接触面のセン断抵抗を測定
したところ約３０トン／ｄであつた。The polyethylene coating was applied to the steel plate because it is assumed that among the steel pipes, plated steel pipes, and painted steel pipes used in the present invention, polyethylene-coated steel pipes have the worst adhesion with the coating composition of the present invention. (1) Adhesion between the coating layer and the steel pipe The shear resistance of the contact surface between the coating layer and the polyethylene layer was measured and was approximately 30 tons/d.
通常推進管の推進中の周面抵抗は０．５〜２トン／Ｍ２
であり、被覆層とポリエチレン層との接触面のセン断抵
抗がこれの１５〜６０倍であるので、推進中に被覆層が
剥離することはないといえる。（２）被覆層の衝撃強度
６５０ｔの鋼球を高さ２４００ＴＩＩＪ！ｌより落下し
たところ（ＪＩＳＧ３４９２）鋼球が落下した位置に０
．３ｕのくぼみが生じただけでクラツク等は生じなかつ
た。Normally, the peripheral surface resistance of the propulsion tube during propulsion is 0.5 to 2 tons/M2
Since the shear resistance of the contact surface between the coating layer and the polyethylene layer is 15 to 60 times greater than this, it can be said that the coating layer will not peel off during propulsion. (2) Steel balls with a coating layer impact strength of 650 tons and a height of 2400 TIIJ! 0 at the position where the steel ball fell (JISG3492)
．． Only a dent of 3u was formed, but no cracks or the like occurred.
（３）被覆層の曲げ強度
長さ３０礪の試験片の中央部が１０藺撓ます曲げ試験を
行つたがクラツク等は発生しなかつた。(3) Bending strength of coating layer A bending test was conducted in which the central part of a test piece with a length of 30 cm was bent 10 times, but no cracks or the like occurred.
（４）被覆層の圧縮強度この試験の為には、セメントの
試験法と同様に別に試料を調製し、２８日間常温養生し
たものについて測定した結果は、被覆層自体の一軸圧縮
強度は１９０Ｋｆ／Ｃｄであつた。(4) Compressive strength of the coating layer For this test, a sample was prepared separately in the same way as the test method for cement, and the sample was cured at room temperature for 28 days.The results showed that the unconfined compressive strength of the coating layer itself was 190Kf/ It was Cd.
（５）被覆層の耐摩耗性
この試験の為にも、別に円板状の試料を調製し、回転摩
耗機（ＴＡＢＥＲ式ロータリーアブレッサ一）で荷重を
５００ｒとして耐摩耗性を測定したところ、試料が５０
０回転した時の摩耗深さが１．５ｕに過ぎなく、充分な
耐摩耗性を有することが認められた。(5) Abrasion resistance of the coating layer For this test, a disk-shaped sample was separately prepared, and the abrasion resistance was measured using a rotary abrasion machine (TABER type rotary abrader) at a load of 500 r. 50 samples
The wear depth at 0 rotation was only 1.5u, and it was confirmed that it had sufficient wear resistance.
以上の各種の試験の結果、この発明による被覆組成物を
被覆した鋼管類は充分推進用管として使用し得ると判断
される。As a result of the above various tests, it is determined that steel pipes coated with the coating composition of the present invention can be satisfactorily used as propulsion pipes.
次にこの発明による推進工事用管の一実施例を直接地中
に推進埋設した実験結果について述べる。Next, the results of an experiment in which an embodiment of the propulsion construction pipe according to the present invention was directly propulsion buried underground will be described.
実施例推進工事用管・・・外径３２５．３藺、管厚６．
９闘のポリエチレン被覆鋼管の外周面に、前述の物性試
験に用いたと同じ被覆組成物を３ｕ厚に被覆後、２８日
間室内常温で養生したもの。Example: Pipe for promotion work...outer diameter 325.3 mm, pipe thickness 6.
The outer circumferential surface of a 9-gold polyethylene-coated steel pipe was coated with the same coating composition used in the physical property test to a thickness of 3 μm, and then cured at room temperature for 28 days.
推進要領・・・推進距離３０ｍ、土被り１．５ｍ、最大
推進力３２トン。Propulsion details: Propulsion distance 30m, earth cover 1.5m, maximum propulsion force 32 tons.
施工地盤・・・関東ローム、土の標準貫入試験値Ｎ＝８
、土の粘着力３．２トン／Ｍ２、土の内部摩擦角２４．
８の。Construction ground: Kanto loam, soil standard penetration test value N = 8
, soil cohesion 3.2 tons/M2, soil internal friction angle 24.
8.
推進完了後被覆抵抗を測定したところ１．８×１０７Ω
Ｍ２であつた。After completion of propulsion, coating resistance was measured and found to be 1.8×107Ω
It was M2.
被覆抵抗は通常５Ｘ１０４ΩＭ２といわれているが、こ
の発明による管の推進後の被覆抵抗は非常に良好である
。更にこの推進管を掘り起して状態を調査したところ、
剥離、クラツク等は全く認められなかつた。この発明に
よる推進工事用管は以上の如くであるので、推進工法に
おける推進管として使用しても損傷を受けることが殆ん
どなく、そのまま埋設本管として使用することができ、
推進工法の費用労力、工期を著しく軽減することができ
るので、この発明による推進工事用管の産業上の利用価
値は極めて大である。The coating resistance is usually said to be 5×10 4 ΩM 2 , and the coating resistance after the tube according to the invention is propelled is very good. Furthermore, when we dug up this propulsion tube and investigated its condition, we found that
No peeling, cracks, etc. were observed at all. Since the propulsion construction pipe according to the present invention is as described above, it is hardly damaged even when used as a propulsion pipe in the propulsion method, and can be used as a buried main pipe as is.
Since the cost, effort, and construction period of the propulsion method can be significantly reduced, the industrial utility value of the pipe for propulsion construction according to the present invention is extremely large.
Claims (1)
ランドセメント、０．８５ｍｍふるいを全部通過し、０
．２５ｍｍふるいに８５重量％以上とどまる高炉水滓お
よび有機重合体水性エマルジョンを含む被覆組成物にて
、被覆してなる推進工事用管。 ２ 前記被覆組成物が粒子径０．８５〜０．１ｍｍの珪
砂を含む特許請求の範囲第１項記載の推進工事用管。[Claims] 1. The outer circumferential surface of a steel pipe, plated steel pipe or painted steel pipe is completely covered with Portland cement, passed through a 0.85 mm sieve, and
．． A pipe for propulsion work, which is coated on a 25 mm sieve with a coating composition containing blast furnace water slag and an aqueous organic polymer emulsion in an amount of 85% by weight or more. 2. The pipe for propulsion work according to claim 1, wherein the coating composition contains silica sand with a particle size of 0.85 to 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54016216A JPS595105B2 (en) | 1979-02-16 | 1979-02-16 | Pipe for propulsion construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54016216A JPS595105B2 (en) | 1979-02-16 | 1979-02-16 | Pipe for propulsion construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55111599A JPS55111599A (en) | 1980-08-28 |
| JPS595105B2 true JPS595105B2 (en) | 1984-02-02 |
Family
ID=11910321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54016216A Expired JPS595105B2 (en) | 1979-02-16 | 1979-02-16 | Pipe for propulsion construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595105B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738463A (en) * | 1996-08-15 | 1998-04-14 | Halliburton Company | Elastomeric grouting of subsurface conduits |
-
1979
- 1979-02-16 JP JP54016216A patent/JPS595105B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55111599A (en) | 1980-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4536417A (en) | Method for repairing and restoring deteriorated cement-containing inorganic material | |
| CN109057819A (en) | A kind of construction method of the compound two linings form of shield method effluent tunnel | |
| JP5957944B2 (en) | Repair method for concrete structures | |
| JP5910156B2 (en) | Acid-resistant hydraulic composition, mortar composition, and cured mortar | |
| JPH09263467A (en) | Corrosion resistant overcoating composition for concrete structure in water processing facility | |
| JPS595105B2 (en) | Pipe for propulsion construction | |
| Trussell et al. | Review of sprayability of wet sprayed concrete | |
| JP2006248879A (en) | Polymer cement concrete surface coating material and its construction method | |
| JP2016121483A (en) | Tile attaching method and outer wall tiling structure | |
| JP2003120041A (en) | Repair method for concrete deteriorated by salt damage | |
| US4579891A (en) | Feldspar containing protective composition | |
| JPS5935052A (en) | Self leveling material | |
| JPS6121989A (en) | Two agent type concrete waterproofing composition | |
| JP5942520B2 (en) | High acid-resistant hydraulic composition, mortar composition and cured mortar | |
| JP2000053477A (en) | Anticorrosion lining material | |
| JP5868739B2 (en) | Ground treatment method after concrete desalination | |
| AU2003235163A1 (en) | Mortar composition | |
| JP2913275B2 (en) | Hybrid exterior wall repair method | |
| CN223410329U (en) | Be applied to waterproof construction of building pig house excrement ditch masonry partition wall department | |
| JPH01119550A (en) | Mortar material | |
| JP2007001801A (en) | Anticorrosive composite and process for producing the same | |
| CN104402387B (en) | A kind of pile for prestressed pipe end plate magnesium cement based preservative and using method thereof | |
| JP6326992B2 (en) | Acid-resistant hydraulic composition, mortar composition, and cured mortar | |
| Thanaraj et al. | Investigations on Improving the Compressive Strength of Sand Column with Cement Grout and Chemical Admixture | |
| JP2009161386A (en) | Primer for lightweight cement composition, composite of metal-lightweight cement composition using the same, and a method of forming metal-lightweight cement composition |