JPH0819771B2 - Formwork support fixture - Google Patents
Formwork support fixtureInfo
- Publication number
- JPH0819771B2 JPH0819771B2 JP1013198A JP1319889A JPH0819771B2 JP H0819771 B2 JPH0819771 B2 JP H0819771B2 JP 1013198 A JP1013198 A JP 1013198A JP 1319889 A JP1319889 A JP 1319889A JP H0819771 B2 JPH0819771 B2 JP H0819771B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- fixture
- separator
- weight
- soluble
- 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
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明の型枠支持用固定具は、２枚のコンクリート型
枠用合板を支持する際に使用される埋込み式の型枠支持
用固定具に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The mold support fixture of the present invention is an embedded formwork support fixture used when supporting two concrete plywood boards. Regarding
［従来の技術］ コンクリート型枠用合板の型枠支持用固定具として
は、合板樹脂製のものが使用されていたが、コンクリー
トとの密着性に問題があるため、合成樹脂の代りに樹脂
を含有するモルタルよりなる固定具が発明されている。
しかしモルタル製では、セパレータおよび軸足を保持す
るのに必要な引張り強度がないため、金属性のセパレー
タ保持ナットを固定具軸中心部に埋設する必要がある。
このため、このセパレータ保持ナットとセパレータ間の
隙間からのコンクリート内部への水の浸入あるいは錆を
含んだ水のコンクリート表面への漏洩が生じ、セパレー
タの腐食あるいは錆を含む水によるコンクリート表面の
汚損といった問題があり、さらには、セパレータ保持ナ
ットの腐食による固定具自体の耐久性の低下といった問
題があった。[Prior Art] A plywood resin fixture has been used as a mold support fixture for plywood for concrete formwork. However, since there is a problem with the adhesion to concrete, resin is used instead of synthetic resin. A fixture made of containing mortar has been invented.
However, since the mortar does not have the tensile strength required to hold the separator and the shaft foot, it is necessary to bury a metallic separator holding nut in the center of the fixture shaft.
For this reason, infiltration of water into the concrete through the gap between the separator holding nut and the separator or leakage of water containing rust to the concrete surface occurs, and corrosion of the separator or contamination of the concrete surface by water containing rust occurs. There is a problem, and further, there is a problem that durability of the fixture itself is deteriorated due to corrosion of the separator holding nut.
［発明が解決しようとする課題］ したがって、この発明においては、セパレータ保持ナ
ットを必要とせず、セパレータおよび軸支を直接保持す
るに十分な引張り強度を有する型枠支持用固定具を提供
することを課題とする。[Problems to be Solved by the Invention] Therefore, in the present invention, it is not necessary to provide a separator holding nut, and to provide a formwork support fixture having sufficient tensile strength to directly hold the separator and the shaft support. It is an issue.
［課題を解決するための手段］ 上記の課題を達成するために、本発明は、少なくとも
１種類の水硬性セメント、水溶性または水分散性の有機
高分子材料、および水よりなり、引張り強度が200kgf/c
m2以上である水和物硬化体の軸中心部分の孔が雌ねじを
有する型枠支持用固定具とする。[Means for Solving the Problems] In order to achieve the above objects, the present invention comprises at least one kind of hydraulic cement, a water-soluble or water-dispersible organic polymer material, and water, and has a tensile strength. 200kgf / c
A fixture for supporting a mold having a hole in the axial center portion of the hydrated body of m 2 or more having an internal thread.
ここでいう水硬性セメントとは、普通、早強，中庸
熱，耐硫酸塩，白色などのポルトランドセメント、ある
いは超速硬セメントおよびアルミナセメントなどの特殊
セメントを挙げることができ、その性質に応じて遅延
剤，速硬剤および減水剤などの添加剤、あるいはスラグ
粉，石灰石粉，フライアッシュおよび硅石粉などの混合
材を配合して使用することもできる。また、ガラス繊
維，カーボン繊維および鋼繊維などの繊維を添加するこ
とは、本発明の固定具の引張り強度を高めるのに効果が
ある。Examples of hydraulic cements include portland cements such as early strength, moderate heat, sulfate resistant, white, or special cements such as ultra-rapid cements and alumina cements, which are delayed depending on their properties. It is also possible to mix and use additives such as agents, quick-hardening agents and water-reducing agents, or mixed materials such as slag powder, limestone powder, fly ash and silica powder. Also, the addition of fibers such as glass fibers, carbon fibers and steel fibers is effective in increasing the tensile strength of the fixture of the present invention.
水溶性または水分散性の有機高分子材料としては、水
硬性セメントおよび水と混合して使用することによっ
て、水和物硬化体に十分な引張り強度を与えるものであ
れば特に限定しないが、部分鹸化ポリ酢酸ビニル，水溶
性アクリル樹脂，水溶性メラミン樹脂，ゴムラテック
ス，塩化ビニル系エマルジョンなどを挙げることがで
き、２種以上を混合して使用することもできる。The water-soluble or water-dispersible organic polymer material is not particularly limited as long as it gives sufficient tensile strength to the cured hydrate by using it in a mixture with hydraulic cement and water. Examples thereof include saponified polyvinyl acetate, water-soluble acrylic resin, water-soluble melamine resin, rubber latex, vinyl chloride emulsion, and the like, and two or more kinds may be mixed and used.
水溶性または水分散性の有機高分子材料および水の配
合割合については、水和物硬化体の引張り強度が200kgf
/cm2以上となる配合割合であれば特に限定しないが、特
に好ましくはセメント100重量部に対して水溶性または
水分散性高分子材料３〜15重量部、および水５〜20重量
部であり、この配合割合で製造された固定具は、引張り
強度が高く、本発明の固定具を小さくして使用すること
ができる。Regarding the blending ratio of water-soluble or water-dispersible organic polymer material and water, the tensile strength of the hydrated product is 200 kgf.
It is not particularly limited as long as it is a mixing ratio of not less than / cm 2, but particularly preferably 3 to 15 parts by weight of water-soluble or water-dispersible polymer material and 5 to 20 parts by weight of water per 100 parts by weight of cement. The fixture manufactured in this mixing ratio has high tensile strength, and the fixture of the present invention can be used in a small size.
本発明の固定具の引張り強度は、200kgf/cm2以上ある
ことが好ましく、これ以下ではこの固定具にセパレータ
あるいは軸足をねじ込んで使用する際に、固定具のねじ
山の破損によるセパレータあるいは軸足の抜け、あるい
は急激な引張り荷重による破壊を生じる恐れがある。The tensile strength of the fixture of the present invention is preferably 200 kgf / cm 2 or more, and below this, when the separator or the shaft foot is screwed into the fixture and used, the separator or the shaft due to the damage of the screw thread of the fixture. There is a risk that the foot will fall out or that it will be destroyed by a sudden tensile load.
なお、本発明の固定具は、水硬性セメント，水溶性ま
たは水分散性の有機高分子材料、および水の混合物を、
ロールミルなどの混練機によって混練し、この混練物を
ホットプレス，常温プレスなどの方法により加圧成形
後、蒸気養生，常温養生，オートクレーブ養生、および
加熱養生して得ることができる。The fixture of the present invention comprises a mixture of hydraulic cement, a water-soluble or water-dispersible organic polymer material, and water,
It can be obtained by kneading with a kneading machine such as a roll mill, press-molding this kneaded product by a method such as hot pressing or normal temperature pressing, and then steam curing, normal temperature curing, autoclave curing, and heat curing.
［作用］ 本発明は、少なくとも１種類の水硬性セメント、水溶
性または水分散性の有機高分子材料、および水を材料と
し、セパレータおよび軸足を保持するに十分な引張り強
度を有する水和物硬化体よりなる固定具である。[Operation] The present invention uses at least one hydraulic cement, a water-soluble or water-dispersible organic polymer material, and water as a material, and a hydrate having sufficient tensile strength to hold the separator and the axial foot. A fixture made of a cured product.
したがって、この固定具の軸中心部には金属性のセパ
レータ保持ナットを埋設する必要がないので、腐食部分
が全くない。このため、金属性のセパレータ保持ナット
を埋設した固定具のように、固定具自体の錆によるコン
クリート表面の汚損といった問題は全く生じない。Therefore, since it is not necessary to bury a metallic separator holding nut in the central portion of the shaft of this fixture, there is no corroded portion. Therefore, unlike the fixture in which the metallic separator holding nut is embedded, there is no problem of soiling the concrete surface due to rust of the fixture itself.
また、本発明の型枠支持用固定具は、水を吸ってわず
かに膨張する性質を有している。したがって、コンクリ
ート内外部から漏洩あるいは浸入する水を吸って膨張す
ることにより、セパレータと密着し、その後の水の出入
りを完全に防ぐことができる。Further, the mold support fixture of the present invention has a property of absorbing water and slightly expanding. Therefore, by absorbing and expanding water leaking or entering from the inside and outside of the concrete, it is possible to make close contact with the separator and completely prevent the subsequent entry and exit of water.
［実施例］ 実施例１〜３ アルミナセメント100重量部に対して、水13重量部、
および有機高分子材料４重量部を配合した混合物を、ロ
ールミルで混練し、この混練物を中心部にボルトをねじ
込んだ金型に入れ、温度80℃，圧力30kgf/cm2の条件で1
0分間ホットプレスした。つぎに、この硬化体を80℃で2
4時間加熱養生して、上部の直径29mm、下部の直径27m
m、高さ27mmの円錐台の型枠支持用固定具を３個製造
し、この固定具の両端よりボルトをねじ込み、引張り試
験を行った。結果を第１表に示す。[Examples] Examples 1 to 3 With respect to 100 parts by weight of alumina cement, 13 parts by weight of water,
And the mixture blended with the organic polymer material 4 parts by weight were kneaded by a roll mill, placed in the bolt in the center of the kneaded product into a mold screwed, temperature 80 ° C., 1 under a pressure of 30 kgf / cm 2
Hot pressed for 0 minutes. Next, this cured product was heated at 80 ° C for 2
Heated and cured for 4 hours, upper diameter 29 mm, lower diameter 27 m
Three fixtures for supporting the form of a truncated cone having a height of m and a height of 27 mm were manufactured, and bolts were screwed in from both ends of the fixture to conduct a tensile test. The results are shown in Table 1.
実施例４〜６ 部分鹸化ポリ酢酸ビニルの添加量を変えた以外は、実
施例１〜３と同様にして型枠支持用固定具を製造し、引
張り試験を行った。結果を第２表に示す。 Examples 4 to 6 A mold supporting fixture was manufactured and a tensile test was conducted in the same manner as in Examples 1 to 3 except that the amount of partially saponified polyvinyl acetate added was changed. The results are shown in Table 2.
なお、第１図はこの発明の使用上の一実施例を示すも
ので、水和物硬化体２の軸中心部に雌ねじ１を通してあ
る。そして、コンクリート打設時には、第１図に示すよ
うに、型枠用合板3,セパレータ4,つなぎ材5,軸足６を用
いて作業される。 It should be noted that FIG. 1 shows an embodiment in use of the present invention, in which a female screw 1 is passed through a shaft center portion of a hydrated body 2. Then, at the time of pouring concrete, as shown in FIG. 1, the work is performed using the formwork plywood 3, the separator 4, the connecting material 5, and the shaft foot 6.
［発明の効果］ 本発明の型枠支持用固定具には金属性の金具がないの
で腐食部分がない。したがって、固定具自体の錆による
コンクリート表面の汚損および固定具の耐久性の低下と
いった問題がない。また、金具を加工，埋設する工数が
不要で経済的である。EFFECTS OF THE INVENTION Since the mold support fixture of the present invention has no metal fittings, there is no corroded portion. Therefore, there is no problem of stains on the concrete surface due to rust of the fixture itself and deterioration of durability of the fixture. In addition, the man-hours for processing and burying the metal fittings are unnecessary, which is economical.
また、本発明の固定具は、水を吸ってわずかに膨張す
るので、この固定具の中心部から水が浸入した場合、こ
の水を吸収・膨張しセパレータと密着するのでコンクリ
ート外部および内部からの水の浸入および漏洩を完全に
遮断することができ、セパレータの腐食あるいはコンク
リート表面の汚損を防止できる。Further, the fixture of the present invention absorbs water and expands slightly, so when water enters from the center of the fixture, it absorbs and expands this water and adheres to the separator, so that it can be absorbed from outside and inside the concrete. It is possible to completely block ingress and leakage of water, and prevent corrosion of the separator or contamination of the concrete surface.
第１図は本発明の一実施例を示す断面図である。 １……雌ねじ、２……水和物硬化体、３……型枠用合
板、４……セパレータ、５……つなぎ材、６……軸足。FIG. 1 is a sectional view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Female screw, 2 ... Hydrated cured product, 3 ... Formwork plywood, 4 ... Separator, 5 ... Connecting material, 6 ... Shaft foot.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実願 昭61−119734号（実開 昭63− 25749号）の願書に添付した明細書及び図 面の内容を撮影したマイクロフィルム（Ｊ Ｐ，Ｕ) 実願 昭61−58313号（実開 昭62− 169149号）の願書に添付した明細書及び図 面の内容を撮影したマイクロフィルム（Ｊ Ｐ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Microfilm (JP, U ) A microfilm (JP, U) obtained by photographing the contents and drawings attached to the application of Japanese Utility Model Application No. 61-58313 (Japanese Utility Model Application No. 62-169149).
Claims (2)
性または水分散性の有機高分子材料、および水よりな
り、引張り強度が200kgf/cm2以上である水和物硬化体の
軸中心部分の孔が雌ねじを有することを特徴とする型枠
支持用固定具。1. A hydrated cured product comprising at least one kind of hydraulic cement, a water-soluble or water-dispersible organic polymer material, and water and having a tensile strength of 200 kgf / cm 2 or more Formwork support fixture, characterized in that the hole has an internal thread.
ントが100重量部、水溶性または水分散性の有機高分子
材料が３〜15重量部、および水が５〜20重量部であるこ
とを特徴とする特許請求の範囲第１項記載の型枠支持用
固定具。2. The weight ratio of the components of the hydrate compact is 100 parts by weight of hydraulic cement, 3 to 15 parts by weight of water-soluble or water-dispersible organic polymer material, and 5 to 20 parts by weight of water. The formwork supporting fixture according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1013198A JPH0819771B2 (en) | 1989-01-24 | 1989-01-24 | Formwork support fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1013198A JPH0819771B2 (en) | 1989-01-24 | 1989-01-24 | Formwork support fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02194274A JPH02194274A (en) | 1990-07-31 |
| JPH0819771B2 true JPH0819771B2 (en) | 1996-02-28 |
Family
ID=11826460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1013198A Expired - Lifetime JPH0819771B2 (en) | 1989-01-24 | 1989-01-24 | Formwork support fixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819771B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4864451B2 (en) * | 2005-12-26 | 2012-02-01 | 岡部株式会社 | Trace hole stopper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169149U (en) * | 1986-04-18 | 1987-10-27 | ||
| JPS6325749U (en) * | 1986-08-02 | 1988-02-19 |
-
1989
- 1989-01-24 JP JP1013198A patent/JPH0819771B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02194274A (en) | 1990-07-31 |
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