JPS599009A - Method of finishing upper surface of steel fiber reinforced concrete - Google Patents
Method of finishing upper surface of steel fiber reinforced concreteInfo
- Publication number
- JPS599009A JPS599009A JP11699282A JP11699282A JPS599009A JP S599009 A JPS599009 A JP S599009A JP 11699282 A JP11699282 A JP 11699282A JP 11699282 A JP11699282 A JP 11699282A JP S599009 A JPS599009 A JP S599009A
- Authority
- JP
- Japan
- Prior art keywords
- steel fiber
- steel
- concrete
- reinforced concrete
- steel fibers
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 50
- 239000010959 steel Substances 0.000 title claims description 50
- 239000011210 fiber-reinforced concrete Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 5
- 239000000835 fiber Substances 0.000 claims description 36
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 description 19
- 239000002184 metal Substances 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Producing Shaped Articles From Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
一般にコンクリートの型枠に接しない仕上面、即ちその
打込み上面の仕上方法は、通常成る程度の平坦面を得る
ために、鏝で均もして仕上げることが多い。DETAILED DESCRIPTION OF THE INVENTION In general, the finished surface of concrete that does not come into contact with the formwork, that is, the top surface of the concrete is often finished by leveling it with a trowel in order to obtain a flat surface that is normally obtained.
この場合、先にコンクリ−ト中の粗骨材を沈降せしめ、
モルタル分を浮出させておくと鏝均らし作業が容易にな
る。In this case, first the coarse aggregate in the concrete is allowed to settle,
If you let the mortar stand out, leveling with a trowel will be easier.
このため従来のコンクリートの上面仕上には、鏝均らし
に先行して鋼製の角材等に振動機を取付けだものを、側
型枠上端部やレールをガイドとしてコンクリート打込み
上面を滑らしていったり、タンパ−を使用してコンクリ
ート打込み上面をタンピングしていた。For this reason, conventional methods for finishing the top surface of concrete involve attaching a vibrator to a square piece of steel prior to leveling with a trowel, and using the upper end of the side formwork or rail as a guide to slide the top surface of the poured concrete. The upper surface of the concrete was tamped using a tamper.
しかしながらこれらの方法は、コンクリート二次製品工
場等、極く硬練りコンクリートを扱うところ以外には近
年の一般工事現場では殆んど行われず、左官が木鏝でコ
ンクリートの打込み上面をそのまま均らしていくことが
多くなっている。However, these methods are rarely used at general construction sites in recent years, except in places where extremely hard mixed concrete is handled, such as secondary concrete product factories. I have more things to do.
ところが鋼繊維補強コンクリートの場合には、コンクリ
ート打込み上面を鏝で均らす際に鋼繊維が鏝に引掛った
り、またいくら鏝で均らしても表面に露出している鋼繊
維がコンクリート中に沈降せず、作業上重大な支障を招
来する。また前記タンパ−等を使用しても、鋼繊維を十
分効果的にコンクリート中に沈降させることはできない
。However, in the case of steel fiber-reinforced concrete, the steel fibers may get caught in the trowel when leveling the top surface of the poured concrete, or the steel fibers exposed on the surface may get caught in the concrete no matter how much you level it with the trowel. It does not settle and causes serious problems during work. Further, even if the tamper or the like is used, the steel fibers cannot be sufficiently effectively settled into the concrete.
更に鋼繊維補強コンクリートの場合には、鋼繊維が表面
に露出していたり極（表面近傍に存在していると、年月
の経過とともに鋼繊維が発銹し、耐久性が低下し、美観
が低下するという欠点があつた。Furthermore, in the case of steel fiber-reinforced concrete, if the steel fibers are exposed on the surface or located near the surface, the steel fibers will rust over time, reducing durability and deteriorating the aesthetic appearance. The disadvantage was that it decreased.
本発明はこのような欠点を除去するために提案されたも
ので、網目の長目方向距離が鋼繊維長に略々等しく形成
された網状板で鋼繊維補強コンクリートの上面を叩き、
鋼繊維を下方に沈降せしめるとともにモルタル分を上方
に浮出させ、しかるのち前記コンクリートの上面に鏝均
らしを施すことを特徴とする鋼繊維補強コンクリートの
上面仕上方法に係るものである。The present invention has been proposed in order to eliminate such drawbacks, and involves striking the upper surface of steel fiber reinforced concrete with a mesh plate in which the distance in the longitudinal direction of the mesh is approximately equal to the length of the steel fibers.
This invention relates to a method for finishing the top surface of steel fiber-reinforced concrete, characterized in that the steel fibers are allowed to settle downward, the mortar is allowed to float upward, and then the top surface of the concrete is leveled with a trowel.
本発明においては前記したように、網目の長手方向距離
が鋼繊維長に略々等しく形成された網状板で鋼繊維補強
コンクリートの打込み上面を叩くようにしたので、前記
網状板の叩く方向に直交する鋼繊維は効率よく同網状板
の網目によって押えられてコンクリート内に沈降し、同
時に鋼繊維補強コンクリートのモルタル分を容易に浮出
させることができる。In the present invention, as described above, the top surface of the steel fiber reinforced concrete is struck with a mesh board whose length in the longitudinal direction is approximately equal to the length of the steel fibers. The steel fibers are efficiently suppressed by the mesh of the mesh plate and settle into the concrete, and at the same time, the mortar component of the steel fiber-reinforced concrete can be easily lifted out.
このように本発明によれば鋼繊維補強コンクリート中の
鋼繊維が沈降し、モルタル分が浮出されているので、仕
上作業時において鏝に鋼繊維が引掛ることがなく、均も
し作業が容易に行なわれるものであり、また鋼繊維がコ
ンクリート表面に存在することがなく、十分にコンクリ
ートで被覆されているので発銹する惧れがない等、本発
明は多くの利点を有するものである。In this way, according to the present invention, the steel fibers in the steel fiber-reinforced concrete settle and the mortar is lifted out, so the steel fibers do not get caught in the trowel during finishing work, making leveling work easier. The present invention has many advantages, such as the steel fibers are not present on the concrete surface and there is no risk of rusting since the concrete is sufficiently covered.
以下本発明を図示の実施例について説明する。The present invention will be described below with reference to the illustrated embodiments.
本発明の適用される鋼繊維補強コンクリートは通常２０
〜４０龍の長さの鋼繊維、及び最大粒径１０〜２５＊ｔ
ａの粗骨材が使用されている。The steel fiber reinforced concrete to which the present invention is applied usually has a
~40 long steel fiber, and maximum grain size 10~25*t
A coarse aggregate is used.
第１図は本発明に使用されるタンパ−（Ａ）を示し、網
目の長目方向距離ｌが２０〜４０ｔｔｕａ、短目方向距
離ｌ′が１０〜４０朋に形成されたエキスバンドメタル
（１）の裏面に力骨（２）を溶着し、四力骨（２）に把
手（３）を溶着して構成されている。FIG. 1 shows a tamper (A) used in the present invention, in which an expanded metal (1 ), and a handle (3) is welded to the four-force bone (2).
而して本発明においては前記タンパー（Ａ）のエキスバ
ンドメタルル（１）によって鋼繊維補強コンクリートの
上面を叩打し、同エキス／ξンドメタル（１）の網目に
よってその叩打方向に直交する鋼繊維を効率よくコンク
リート中に沈降せしめるとともに、モルタル分を上方に
浮出させ、爾後の鏝均らし作業を容易ならしめるととも
に、鋼繊維の発銹な防止するものである。In the present invention, the upper surface of the steel fiber reinforced concrete is pounded by the expanded metal (1) of the tamper (A), and the steel fibers perpendicular to the tapping direction are This allows the mortar to settle efficiently into the concrete, and causes the mortar to float upward, making subsequent leveling work easier and preventing steel fibers from becoming rusty.
本発明においては前記したようにエキスバンドメタルの
網目の長手方向距離ｊを鋼繊維の長さとほぼ等しくした
点に特徴を有するもので、！をこのように構成した理由
を次に述べる。As mentioned above, the present invention is characterized in that the longitudinal distance j of the expanded metal mesh is approximately equal to the length of the steel fiber. The reason for configuring it this way is explained below.
１） ／を鋼繊維長よりずっと太き（した場合、鋼繊
維ｆＢｌは、コンクＩＪ −ト（ＣＪ中では第３図のよ
うに、打込表面の近傍ではほぼ面に平行に配向している
確率が高いが、面に対しある角度をもって埋没している
鋼繊維（Ｂｌもあるのでこのような状態の鋼繊維（Ｂ）
を沈めるのに、！を鋼繊維長より大きくすると、タンピ
ングしても鋼繊維（Ｂｌが網目の中に位置するものが存
在し、このためタンピング回数が多くなるなど効率的で
ない。これは、！が鋼繊維長より大きくなるほど著しく
なる傾向にある。1) When / is much thicker than the steel fiber length, the steel fiber fBl is oriented almost parallel to the surface near the implanted surface as shown in Fig. 3 in the concrete IJ-t (CJ). Although there is a high probability, the steel fibers are buried at a certain angle to the surface (Bl is also present, so the steel fibers in this state (B)
To sink it! If ! is larger than the steel fiber length, even if tamped, some steel fibers (Bl) will be located in the mesh, which will increase the number of times of tamping, making it inefficient. Indeed, the trend is becoming more pronounced.
ＩＩ） Ａを鋼繊維長よりずっと小さくした場合、！
を鋼繊維長より小さくしていくと、タンピング時に打込
表面に傾斜した鋼繊維（Ｂｌにも網目が接する確率が高
（なるが、小さくするほど鋼繊維ｔＢ）をコンクリート
中にある程度深く沈めることはできない。即ち！を小さ
くするほど、鋼繊維ｆＢｌのかぶり厚さが小さくなる。II) If A is made much smaller than the steel fiber length, then!
When tamping is made smaller than the steel fiber length, there is a high probability that the mesh will come into contact with the steel fibers (Bl) that are inclined on the driving surface during tamping (but the smaller the steel fibers tB), the more the steel fibers tB will sink into the concrete to some extent. In other words, the smaller ! is, the smaller the covering thickness of the steel fiber fBl becomes.
これは、鋼繊維（日の防錆上好ましくない。また、一般
に網目を小さくするほど網目材の断面寸法も小さくなり
、堅牢さがなくなってきて破損しやすくなる。This is unfavorable in terms of rust prevention from steel fibers. In general, the smaller the mesh size, the smaller the cross-sectional dimension of the mesh material, which makes it less robust and more likely to break.
ｌ１１）上記ｌ〕、ｌ）から、！は鋼繊維長に対しであ
る適当な範囲が存在する。また、通常、鋼繊維補強コン
クリートは、鋼繊維長２０〜４０間、粗骨材の最大粒径
１０〜２５＋ｕのものが用いられており、かつ鋼繊維の
方が粗骨材の最大粒径より長い。l11) From the above l], l),! There is a suitable range for the steel fiber length. In addition, normally, steel fiber reinforced concrete is used with a steel fiber length of 20 to 40 and a coarse aggregate maximum particle size of 10 to 25+U, and the steel fiber is larger than the coarse aggregate maximum particle size. long.
このため実施例に示すように、！は２ｏ〜４０ Ｔｕ程
度の範囲で鋼繊維長に略々等しい長さであれば最も効果
的である。For this reason, as shown in the example,! It is most effective if the length is approximately equal to the steel fiber length in the range of about 20 to 40 Tu.
以上本発明を実施例について説明したが、本発明は勿論
このような実施例に局限されるものではなく、本発明の
精神を逸脱しない範凹内で種々の設計の改変を施し５る
ものである。Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments, and may be modified in various ways without departing from the spirit of the present invention. be.
第１図は本発明の方法に使用されるタンパーの一実施例
を示す斜面図、第２図はエキスバンドメタルの網目を示
す拡大平面図、第３図はコンクリート中の鋼繊維の分散
状態を示す説明図である。
（Ａｌ・・・タンバー、（１１・・・エキスバンドメタ
ル、（２）・・・力骨、 （３）・・・把手。
代理人弁理士岡本重文
外２名Fig. 1 is a perspective view showing one embodiment of the tamper used in the method of the present invention, Fig. 2 is an enlarged plan view showing the mesh of expanded metal, and Fig. 3 shows the state of dispersion of steel fibers in concrete. FIG. (Al...Tanbor, (11...Extracted band metal, (2)...Strong bone, (3)...Handle.Representative patent attorney Shigefumi Okamoto and two others)
Claims (1)
網状板で鋼繊維補強コンクリートの上面を叩き、鋼繊維
を下方に沈降せしめるとともにモルタル分を上方に浮出
させ、しかるのち前記コンクリートの上面に鏝均らしを
施すことを特徴とする鋼繊維補強コンクリートの上面仕
上方法。The top surface of the steel fiber-reinforced concrete is struck with a mesh plate whose length in the longitudinal direction of the mesh is approximately equal to the length of the steel fibers, causing the steel fibers to settle downward and the mortar to float upwards. A method for finishing the top surface of steel fiber reinforced concrete, characterized by leveling the top surface with a trowel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11699282A JPS6030527B2 (en) | 1982-07-07 | 1982-07-07 | Top surface finishing method for steel fiber reinforced concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11699282A JPS6030527B2 (en) | 1982-07-07 | 1982-07-07 | Top surface finishing method for steel fiber reinforced concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599009A true JPS599009A (en) | 1984-01-18 |
| JPS6030527B2 JPS6030527B2 (en) | 1985-07-17 |
Family
ID=14700790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11699282A Expired JPS6030527B2 (en) | 1982-07-07 | 1982-07-07 | Top surface finishing method for steel fiber reinforced concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6030527B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6000212A (en) * | 1996-05-03 | 1999-12-14 | Rolls-Royce Plc | Catalytic combustion chamber with pilot stage and a method of operation thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0445508A (en) * | 1990-06-13 | 1992-02-14 | San'eisha Mfg Co Ltd | Leakage current measuring device for lightning arrester |
-
1982
- 1982-07-07 JP JP11699282A patent/JPS6030527B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6000212A (en) * | 1996-05-03 | 1999-12-14 | Rolls-Royce Plc | Catalytic combustion chamber with pilot stage and a method of operation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6030527B2 (en) | 1985-07-17 |
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