JP3084935B2 - Inorganic grout material for reinforced threaded joints - Google Patents
Inorganic grout material for reinforced threaded jointsInfo
- Publication number
- JP3084935B2 JP3084935B2 JP17087692A JP17087692A JP3084935B2 JP 3084935 B2 JP3084935 B2 JP 3084935B2 JP 17087692 A JP17087692 A JP 17087692A JP 17087692 A JP17087692 A JP 17087692A JP 3084935 B2 JP3084935 B2 JP 3084935B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- grout material
- reducing agent
- weight
- fine powder
- 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 - Lifetime
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Sealing Material Composition (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は鉄筋ネジ節継手用無機質
グラウト材に係り、特に、鉄筋コンクリート造、鉄骨鉄
筋コンクリート造、プレキャストコンクリート造に用い
る鉄筋ネジ節継手の間隙に注入充填することにより、両
継手を接合固定するための無機質グラウト材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic grout material for a threaded joint of a reinforced thread, and more particularly, to a joint of a threaded joint used in a reinforced concrete construction, a steel reinforced concrete construction and a precast concrete construction by injecting and filling the gap. The present invention relates to an inorganic grout material for joining and fixing a material.
【０００２】[0002]
【従来の技術】最近、コンクリート構造物の梁や柱の配
筋作業には、工事の省力化が図れる、熟練職人が不要で
ある、及び、天候に左右されずに施工できる等の理由か
ら、鉄筋ネジ節継手が採用されるようになってきた。し
かし、このネジ節継手方式では、接続時に大きな締め付
け力を要するため、鉄筋の配筋が複雑になると作業性が
悪くなるという問題があった。2. Description of the Related Art Recently, the work of arranging beams and columns of a concrete structure has been made because of the labor saving of construction, the need for skilled craftsmen, and the ability to carry out construction without being affected by the weather. Reinforcing threaded joints have been adopted. However, in this threaded joint method, a large fastening force is required at the time of connection, so that there is a problem that workability is deteriorated when the arrangement of reinforcing bars is complicated.
【０００３】そこで、鉄筋ネジ節継手の内部の空隙に、
有機質系又は無機質系のグラウト材を注入して所定の継
手強度を確保する方法が採用されるようになってきた。
この場合、有機質系のグラウト材では、恒久性、耐火
性、耐熱性に問題があることから、最近では無機質系グ
ラウト材が使用されている。[0003] Therefore, in the gap inside the rebar thread joint,
A method of injecting an organic or inorganic grout material to secure a predetermined joint strength has been adopted.
In this case, since the organic grout material has problems in durability, fire resistance, and heat resistance, an inorganic grout material has recently been used.
【０００４】現在使用されている無機質系グラウト材
は、セメントに減水剤と増粘剤を添加して、所定の水量
で混合してグラウトミルクにしたものであり、このグラ
ウト材をネジ継手の注入孔へ圧入して、継手内の空隙に
充填する。[0004] The inorganic grout material currently used is obtained by adding a water reducing agent and a thickening agent to cement and mixing it with a predetermined amount of water to form grout milk. This grout material is injected into a screw joint. Press into the hole to fill the void in the joint.
【０００５】[0005]
【発明が解決しようとする課題】現在使用されている、
上記セメント、減水剤及び増粘剤からなる無機質系グラ
ウト材は、原料主材としてセメントを使用しているた
め、粘性・フロー値で表す流動性が、時間の経過と共に
悪くなる傾向があった。このため、大量にグラウト材を
使用する場合でも、小ロッドで混練し、すぐに注入施工
を行なう必要があり、頻繁にグラウト材の混合と注入を
繰り返すことから、手間がかかるという欠点がある。因
みに、グラウト材の流動性が悪化した状態で注入施工を
行なうと、充填効果が不十分で、充填部に空隙が生じ、
外部応力で該当部分から硬化体にクラックが生じて、継
手性能を悪化させることがある。また、このグラウト材
はセメントを主体としているので、コストが高いという
欠点もある。SUMMARY OF THE INVENTION Currently used,
Since the inorganic grout material composed of the cement, the water reducing agent and the thickener uses cement as a raw material, the fluidity represented by the viscosity / flow value tends to deteriorate over time. For this reason, even when a large amount of grout material is used, it is necessary to knead with a small rod and immediately perform the pouring work, and there is a disadvantage that the mixing and pouring of the grout material are frequently repeated, which is troublesome. By the way, when pouring is performed in a state where the flowability of the grout material is deteriorated, the filling effect is insufficient, voids are generated in the filling portion,
A crack may occur in the hardened body from the corresponding portion due to external stress, and the joint performance may be deteriorated. In addition, since the grout material is mainly made of cement, it has a disadvantage of high cost.
【０００６】本発明は上記従来のグラウト材の問題点を
解決し、安価で流動性の経時変化が少ない鉄筋ネジ節継
手用無機質グラウト材を提供することを目的とする。An object of the present invention is to solve the above-mentioned problems of the conventional grout material and to provide an inexpensive inorganic grout material for a threaded joint of a rebar thread which has little change with time in fluidity.
【０００７】[0007]
【課題を解決するための手段】本発明の鉄筋ネジ節継手
用無機質グラウト材は、主材である高炉水砕スラグ微
粉、アルカリ刺激剤としての微粉セメント、乾燥収縮低
減剤、減水剤及び増粘剤を下記配合割合で含むことを特
徴とする。高炉水砕スラグ微粉；７０〜９０重量％、 微粉セメント ；１０〜３０重量％、 乾燥収縮低減剤 ；５〜１０重量％、 減水剤 ；前記スラグ微粉、微粉セメント及
び乾燥収縮低減剤の合計量に対して０．５〜１．５重量
％、 増粘剤 ；前記スラグ微粉、微粉セメント及
び乾燥収縮低減剤の合計量に対して０．０２〜０．０５
重量％ SUMMARY OF THE INVENTION A rebar threaded joint according to the present invention.
Inorganic grout material forGranulated blast furnace slag, the main material
Powder, fine cement as alkali stimulant, low drying shrinkage
Contains reducer, water reducer and thickener in the following proportionsSpecially
Sign.Granulated blast furnace slag fine powder; 70 to 90% by weight, Fine powder cement: 10 to 30% by weight, Drying shrinkage reducing agent: 5 to 10% by weight, Water reducing agent; slag fine powder, fine cement and
0.5 to 1.5 weight based on the total amount of drying shrinkage reducing agent
%, Thickeners; slag fine powder, fine cement and
0.02 to 0.05 with respect to the total amount of the drying shrinkage reducing agent
weight%
【０００８】以下に本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００９】本発明の鉄筋ネジ節継手用無機質グラウト
材は、高炉水砕スラグを主材とし、普通ポルトランドセ
メント等のアルカリ刺激剤を含むものである。[0009] Rebar threaded section fitting for inorganic grout of the present invention, a blast furnace water granulated slag as a main material, is intended to include alkali stimulant such as ordinary Portland cement.
【００１０】本発明ではスラグとして、高炉水砕スラグ
を用いる。アルカリ刺激剤としては、普通ポルトランド
セメント等の各種セメントを用いる。 [0010] as a slug in the present invention, water-granulated blast furnace slag
The Ru used. Examples of the alkali stimulant, Ru using various cement such as ordinary portland cement.
【００１１】本発明の鉄筋ネジ節継手用無機質グラウト
材は、高炉水砕スラグ及びアルカリ刺激剤としての微粉
セメントに、更に、その他の混和剤として、グラウト材
の粒子を分散させ注入作業性をより一層向上させる目的
と、混練時の水量を減じることで強度を向上させる目的
で減水剤を、また、継手に注入した後、グラウト材の硬
化までに継手と鉄筋間の空隙からの漏れを防止する目的
で増粘剤を添加する。また、硬化後の固化体の乾燥収縮
を防止する目的で、乾燥収縮低減剤を添加する。 [0011] The inorganic grout material for a threaded joint of a reinforcing bar according to the present invention comprises granulated blast furnace slag and fine powder as an alkali stimulant.
In the cement , further, as another admixture, a water reducing agent for the purpose of dispersing the grout material particles to further improve the injection workability, and for the purpose of improving the strength by reducing the amount of water at the time of kneading, and a joint. after pouring into, add thickeners in order to prevent leakage from the gap between the joint and the reinforcing bars to the curing of the grout. Further, in order to prevent the drying shrinkage of the solidified material after curing, it added drying shrinkage-reducing agent.
【００１２】本発明の鉄筋ネジ節継手用無機質グラウト
材の配合割合は次の通りである。 主材である高炉水砕スラグ微粉；７０〜９０重量％、 アルカリ刺激剤として微粉セメント；１０〜３０重量
％、 乾燥収縮低減剤；５〜１０重量％、 減水剤；前記スラグ微粉、微粉セメント及び乾燥収縮低
減剤の合計量に対して０．５〜１．５重量％、 増粘剤；前記スラグ微粉、微粉セメント及び乾燥収縮低
減剤の合計量に対して０．０２〜０．０５重量％[0012] Blend ratio of reinforcing bar threaded section joint inorganic grout of the present invention is as follows. 70-90 wt%, fine cement as alkaline stimulant; water-granulated blast furnace slag which is the main material 10 to 30 wt%, dry shrinkage reducing agent; 5-10 wt%, water reducing agent; the slag fines, pulverized cement and 0.5 to 1.5% by weight relative to the total amount of drying shrinkage reducing agent, a thickener; the slag fines, based on the total amount of fines cement and drying shrinkage-reducing agent from 0.02 to 0.05 weight%
【００１３】このスラグ微粉としては、通常の工場等で
製造されるブレーン値４０００〜４５００ｃｍ２／ｇの
スラグ粉末を再粉砕、或いは分級等の手段で粒度調整さ
れた、ブレーン値６０００〜１４０００ｃｍ２／ｇのも
のが好ましい。As the slag fine powder, a slag powder having a Blaine value of 4000 to 4500 cm 2 / g produced in a normal factory or the like is reground or a particle size adjusted by means of classification or the like, and a Blaine value of 6000 to 14000 cm 2 / g. g are preferred.
【００１４】アルカリ刺激剤としての微粉セメントとし
ては、上記粒度、即ち、ブレーン値６０００〜１４００
０ｃｍ２／ｇのものが好ましく、この微粉セメントは、
必要に応じて、石膏、水酸化カルシウム等の水酸化アル
カリ又は硫酸アルカリ等を添加したものであっても良
い。The fine particle cement as the alkali stimulant has the above particle size, that is, a Blaine value of 6000 to 1400.
0 cm 2 / g is preferred and this finely divided cement is
If necessary, gypsum, alkali hydroxide such as calcium hydroxide or alkali sulfate may be added.
【００１５】また、乾燥収縮低減剤としては炭酸カルシ
ウム、無水石膏等の前記粒度の微粉が好ましい。減水剤
としては、コンクリート一般に使用される市販品を用い
ることができる。増粘剤としてはメチルセルロール系増
粘剤等を使用するのが好ましい。As the drying shrinkage reducing agent, fine powder having the above-mentioned particle size such as calcium carbonate and anhydrous gypsum is preferable. As the water reducing agent, a commercially available product generally used for concrete can be used. It is preferable to use a methylcellulose-based thickener or the like as the thickener.
【００１６】本発明の鉄筋ネジ節継手用無機質グラウト
材は、その１００重量部に対し水を３０〜５０重量部、
好ましくは３５〜４５重量部の割合にて加えて混合し、
グラウトミルクとなし、このグラウトミルクを継手内の
空隙に充填して使用する。アルカリ刺激剤が水溶液の場
合には、水セメント比（Ｗ／Ｃ）が４０〜５０程度とな
るように水を加えるのが好ましい。The inorganic grout material for a rebar threaded joint according to the present invention has a water content of 30 to 50 parts by weight per 100 parts by weight thereof.
Preferably added and mixed at a ratio of 35 to 45 parts by weight,
Grout milk is used, and the grout milk is used by filling the voids in the joint. When the alkali stimulant is an aqueous solution, it is preferable to add water so that the water-cement ratio (W / C) becomes about 40 to 50.
【００１７】[0017]
【作用】高炉水砕スラグは、水と反応して凝結硬化する
潜在水硬性をもっている。また、スラグ微粉の粉末度を
大きくすると、粘稠性が高くなる、材料分離抵抗性が向
上する、ブリージング量が減少する等の長所が知られて
いる。[Action] blast furnace water granulated slag, has a latent hydraulic to condense curing by reacting with water. Also, it is known that when the fineness of the slag fine powder is increased, the viscosity is increased, the material separation resistance is improved, and the amount of breathing is reduced.
【００１８】本発明では、このような高炉水砕スラグの
もつ、流動性向上作用、材料分離・ブリージング性向上
作用、水和熱低減作用、長期高強度保持作用、高化学抵
抗性等の性質を生かして、アルカリ刺激剤としての微粉
セメントの作用で恒久性をもち、かつ、高強度を有する
鉄筋ネジ節継手用無機質グラウト材を安価に提供する。In the present invention, the properties of the granulated blast furnace slag such as fluidity improving action, material separating / breathing property improving action, hydration heat reducing action, long-term high strength holding action, and high chemical resistance are provided. Making the best use of fine powder as an alkaline stimulant
Provided is an inexpensive inorganic grout material for rebar threaded joints, which has durability due to the action of cement and has high strength.
【００１９】なお、鉄鋼スラグはリサイクル法の指定副
産物であり、スラグを利用することは、スラグの用途拡
大の面で極めて重要なことである。Steel slag is a specified by-product of the Recycling Law, and the use of slag is extremely important in expanding the use of slag.
【００２０】[0020]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明する。The present invention will be described more specifically with reference to the following examples.
【００２１】実施例１ 下記表１の原料配合にて本発明のグラウト材を調製し、
これを水セメント比（Ｗ／Ｃ）４０％で混練してその物
性を調べ、結果を表２に示した。Example 1 A grout material of the present invention was prepared by mixing the raw materials shown in Table 1 below.
This was kneaded at a water-cement ratio (W / C) of 40%, and its physical properties were examined. The results are shown in Table 2.
【００２２】また、粘度及びフローの経時変化を従来の
セメント主体グラウト材と比較して表３に示した。Table 3 shows the time-dependent changes in viscosity and flow in comparison with the conventional cement-based grout material.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【表２】 [Table 2]
【００２５】[0025]
【表３】 [Table 3]
【００２６】表２、３より明らかなように、本発明によ
れば、スラグを用いて、流動性の経時変化が小さく、強
度発現性や収縮率についても優れた特性を有するグラウ
ト材が提供される。As is clear from Tables 2 and 3, according to the present invention, a slag is used to provide a grout material having a small change with time in fluidity and having excellent properties in terms of strength development and shrinkage. You.
【００２７】[0027]
【発明の効果】以上詳述した通り、本発明の鉄筋ネジ節
継手用無機質グラウト材によれば、スラグを主材とする
安価なグラウト材であって、強度発現性、収縮率等の面
でも優れた特性を有する上に、流動性の経時変化が少な
いため、大量混練作業も可能で、作業効率や注入作業の
確実性が著しく改善された鉄筋ネジ節継手用無機質グラ
ウト材が提供される。As described above in detail, according to the inorganic grout material for a threaded joint of a rebar thread joint according to the present invention, it is an inexpensive grout material mainly composed of slag, and it is also advantageous in terms of strength development and shrinkage. An inorganic grout material for a threaded joint of a reinforcing bar is provided, which has excellent properties and has little change with time in fluidity, so that a large amount of kneading work is possible, and work efficiency and reliability of injection work are remarkably improved.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０４Ｂ 24:38 22:14） 111:70 (72)発明者 樋口 直寛 福岡県北九州市八幡西区洞南町１番地１ 三菱マテリアル株式会社 九州事業所 開発研究部内 (56)参考文献 特開 昭64−20290（ＪＰ，Ａ) 特開 平２−141453（ＪＰ，Ａ) 特開 平４−76148（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 28/08 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification code FI C04B 24:38 22:14) 111: 70 (72) Inventor Naohiro Higuchi 1-1, Minami-cho, Yawatanishi-ku, Kitakyushu, Fukuoka Mitsubishi Materials (56) References JP-A-64-20290 (JP, A) JP-A-2-141453 (JP, A) JP-A 4-76148 (JP, A) (58) Survey Field (Int.Cl. 7 , DB name) C04B 28/08
Claims (1)
リ刺激剤としての微粉セメント、乾燥収縮低減剤、減水
剤及び増粘剤を下記配合割合で含むことを特徴とする鉄
筋ネジ節継手用無機質グラウト材。高炉水砕スラグ微粉；７０〜９０重量％、 微粉セメント ；１０〜３０重量％、 乾燥収縮低減剤 ；５〜１０重量％、 減水剤 ；前記スラグ微粉、微粉セメント及
び乾燥収縮低減剤の合計量に対して０．５〜１．５重量
％、 増粘剤 ；前記スラグ微粉、微粉セメント及
び乾燥収縮低減剤の合計量に対して０．０２〜０．０５
重量％ (1)Blast furnace granulated slag fine powder, arca
Fine cement as restimulant, drying shrinkage reducing agent, water reduction
Agent and thickener in the following proportionsIron characterized by including
Inorganic grout material for threaded joints.Granulated blast furnace slag fine powder; 70 to 90% by weight, Fine powder cement: 10 to 30% by weight, Drying shrinkage reducing agent: 5 to 10% by weight, Water reducing agent; slag fine powder, fine cement and
0.5 to 1.5 weight based on the total amount of drying shrinkage reducing agent
%, Thickeners; slag fine powder, fine cement and
0.02 to 0.05 with respect to the total amount of the drying shrinkage reducing agent
weight%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17087692A JP3084935B2 (en) | 1992-06-29 | 1992-06-29 | Inorganic grout material for reinforced threaded joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17087692A JP3084935B2 (en) | 1992-06-29 | 1992-06-29 | Inorganic grout material for reinforced threaded joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0616462A JPH0616462A (en) | 1994-01-25 |
| JP3084935B2 true JP3084935B2 (en) | 2000-09-04 |
Family
ID=15912955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17087692A Expired - Lifetime JP3084935B2 (en) | 1992-06-29 | 1992-06-29 | Inorganic grout material for reinforced threaded joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3084935B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4722322B2 (en) * | 2001-05-14 | 2011-07-13 | 電気化学工業株式会社 | Hydraulic composition |
-
1992
- 1992-06-29 JP JP17087692A patent/JP3084935B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0616462A (en) | 1994-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100928841B1 (en) | Cement composition for grout and grout material using the same | |
| EP4082984A1 (en) | Binder composition comprising pozzolanic material and fine filler | |
| JP2005067945A (en) | Super-high strength high toughness mortar | |
| KR0145101B1 (en) | Method of manufacturing high flowing cement | |
| JPH06293549A (en) | Grout mortar composition | |
| JP6629147B2 (en) | Cavity filling material and cavity filling method using the same | |
| US20060180052A1 (en) | Chemical admixture for cementitious compositions | |
| JP3084935B2 (en) | Inorganic grout material for reinforced threaded joints | |
| JP2002179451A (en) | Concrete or mortar using slag aggregate | |
| JP4464102B2 (en) | High strength mortar composition | |
| JP5403321B2 (en) | Cement-based material | |
| JP2001220197A (en) | Cement composition | |
| JP2968868B2 (en) | Cement admixture and cement composition | |
| JP3283094B2 (en) | Mixed cement | |
| JPS59102849A (en) | Super high strength cement hardened body | |
| JP4538108B2 (en) | High performance water reducing agent composition and cement composition | |
| JP2839771B2 (en) | Concrete composition with excellent filling and fluidity | |
| JP2839770B2 (en) | Concrete composition with excellent filling and fluidity | |
| JP5383045B2 (en) | Cement composition for grout and grout material using the same | |
| JPH0542383B2 (en) | ||
| US20230192565A1 (en) | Activation system, including at least one alkaline metal salt and calcium and/or magnesium carbonate for activating ground granulated blast furnace slag and binder comprising the same for the preparation of mortar or concrete composition | |
| JP4615669B2 (en) | Admixture and binder for heavy grout mortar and heavy grout mortar | |
| JP7081939B2 (en) | concrete | |
| JP2001048617A (en) | Cement admixture and cement composition | |
| JP3426013B2 (en) | Quick-hardening mixed cement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20000606 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080707 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080707 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090707 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090707 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100707 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100707 Year of fee payment: 10 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100707 Year of fee payment: 10 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110707 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110707 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120707 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term |