JPH0216037B2 - - Google Patents
Info
- Publication number
- JPH0216037B2 JPH0216037B2 JP62096322A JP9632287A JPH0216037B2 JP H0216037 B2 JPH0216037 B2 JP H0216037B2 JP 62096322 A JP62096322 A JP 62096322A JP 9632287 A JP9632287 A JP 9632287A JP H0216037 B2 JPH0216037 B2 JP H0216037B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- ferrite
- polymer
- fine aggregate
- aggregate
- 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
- 239000004567 concrete Substances 0.000 claims description 37
- 229920000642 polymer Polymers 0.000 claims description 22
- 229910000859 α-Fe Inorganic materials 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011371 regular concrete Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は各種構造物、その他電波吸収性能を有
する工作台等に適用される電波吸収性能を有する
無収縮性PC版の製造方法に係るものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a non-shrinkable PC plate having radio wave absorption performance that is applied to various structures and other work tables that have radio wave absorption performance. It is.
（従来の技術）
従来部材に電波吸収性能を賦与するために、フ
エライトを細骨材の代りに用いたフエライトモル
タルで表面仕上げを行なつたり、フエライトを含
有しているフエライトタイルで表面仕上げを行な
つている。(Prior art) In order to impart radio wave absorption performance to conventional members, the surface was finished with ferrite mortar using ferrite instead of fine aggregate, or the surface was finished with ferrite tile containing ferrite. It's summery.
（発明が解決しようとする問題点）
前記従来の方法においては仕上げの作業を必要
とし、またフエライトモルタル部と部材との一体
性に問題があり、またフエライトタイルを使用す
るためには別途にタイルを製作しなければならな
い。(Problems to be Solved by the Invention) The conventional method described above requires finishing work, and there is a problem with the integrity of the ferrite mortar part and the member. must be manufactured.
（問題点を解決するための手段）
本発明はこのような問題点を解決するために提
案されたものであつて、細骨材率を10％以下と極
端に低くするか、細骨材を用いないおこし状のコ
ンクリートを打設し、同打設コンクリートを養生
したのち絶対乾燥状態またはこれとほぼ同等の状
態にまで乾燥し、次いで同コンクリートにフエラ
イトを混入したポリマーを含浸させることを特徴
とする電波吸収性能を有する無収縮性PC版の製
造方法に係るものである。(Means for Solving the Problems) The present invention was proposed to solve these problems. The method is characterized by pouring unused concrete, curing the poured concrete, drying it to an absolutely dry state or a state almost equivalent to this, and then impregnating the concrete with a polymer mixed with ferrite. The present invention relates to a method for manufacturing a non-shrinkable PC plate having radio wave absorption performance.
（作用）
本発明においては前記したように、細骨材率を
10％以下と極端に低くするか、細骨材を用いない
おこし状のコンクリートを打設することによつ
て、通水性に富み、他の流動体を含浸させ易いコ
ンクリートが構成され、且つ乾燥収縮が速やかに
終了する。(Function) As mentioned above, in the present invention, the fine aggregate ratio is
By setting the ratio extremely low to 10% or less, or by placing concrete in a raised form without using fine aggregate, concrete with high water permeability and easy impregnation with other fluids can be created, while also having low drying shrinkage. ends promptly.
前記おこし状コンクリートを絶体乾燥状態また
はこれに近い状態にまで乾燥させた後、フエライ
トを混入したポリマーを含浸させるようにしたの
で、同ポリマーは前記おこし状コンクリートに一
体的に含浸、充填され、ポリマー中のフエライト
によつて前記コンクリートに電波吸収性を賦与す
るとともにポリマーが硬化した後は体積の変化が
殆んどない。 After drying the raised concrete to an extremely dry state or a state close to this, it is impregnated with a polymer mixed with ferrite, so that the polymer is integrally impregnated and filled into the raised concrete, The ferrite in the polymer gives the concrete radio wave absorbing properties and there is almost no change in volume after the polymer hardens.
また本発明によれば、骨材としてアルカリ反応
性骨材が混入されても、コンクリートが乾燥した
状態で製品が完成し、ポリマーはコンクリートに
対する付着性がよく、水密になるので、製品が完
成した後は、骨材による被害、ひび割れが発生す
る惧れがない。 Furthermore, according to the present invention, even if alkali-reactive aggregate is mixed as aggregate, the product can be completed while the concrete is dry, and since the polymer has good adhesion to concrete and is watertight, the product can be completed. After that, there is no risk of damage or cracks caused by the aggregate.
更に前記おこし状コンクリートはポリマーの含
浸効果によつて防蝕効果を保持するので、おこし
状コンクリート内に配筋された鉄筋の防蝕効果が
発揮される。 Furthermore, since the raised concrete retains its anti-corrosion effect due to the impregnating effect of the polymer, the corrosion-proofing effect of reinforcing bars arranged in the raised concrete is exhibited.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
細骨材率10％以下と極端に低くするか、細骨材
を用いないおこし状のコンクリートを打設したの
ち、水中養生、蒸気養性、高温高圧養生等によつ
て養生したのち、コンクリートに電磁波を照射す
るか、110℃までの高温を与える等の方法により、
絶対乾燥状態、あるいはこれとほぼ同等の状態に
まで乾燥させ、しかるのちフエライト粉末が混入
されているポリマーを前記おこし状のコンクリー
トに含浸し、同ポリマーの硬化を俟つて、前記フ
エライトにより電波吸収性を有する無収縮性PC
版を製作する。 After setting concrete with an extremely low fine aggregate ratio of 10% or less, or pouring concrete without using fine aggregate, it is cured by water curing, steam curing, high temperature and high pressure curing, etc., and then electromagnetic waves are applied to the concrete. By methods such as irradiating with water or applying high temperatures up to 110℃,
After drying to an absolute dry state or a state almost equivalent to this, the concrete is impregnated with a polymer mixed with ferrite powder, and as the polymer hardens, the ferrite becomes radio wave absorbing. Non-shrinkable PC with
Make a version.
前記実施例の方法において打設されたPC版の
基体を構成するおこし状コンクリートは、通水性
を有し、他の流動体を含浸させ易いので、前記フ
エライト粉末が混入されたポリマーはおこし状コ
ンクリートに容易に含浸され、同コンクリートと
一体化され、ポリマーに混入するフエライトは粒
度分布条件を広くできるし、混入比率を上げるこ
とができる。 The raised concrete constituting the base of the PC plate cast by the method of the above example has water permeability and is easily impregnated with other fluids, so the polymer mixed with the ferrite powder is used in the raised concrete. Ferrite, which is easily impregnated with the concrete and mixed with the polymer, can widen the particle size distribution conditions and increase the mixing ratio.
前記したように、細骨材率を10％以下と極端に
低くしたおこし状のコンクリートは、調合によつ
ては少量のモルタル成分が余るようにし、流動性
を与えて振動を賦与すると、打設下面（底面）及
び端部の下面よりの一部は通常のコンクリートと
同様の外観を保つようにすることができ、更にま
た打設下面（底面）まで完全におこし状にするこ
ともできる。 As mentioned above, concrete with an extremely low fine aggregate content of 10% or less can be poured by adding a small amount of mortar to the mix, giving it fluidity and adding vibration. The lower surface (bottom surface) and a portion of the lower surface of the end portion can maintain the appearance similar to normal concrete, and furthermore, the lower surface (bottom surface) of the cast can be completely raised.
このために、おこし状コンクリートにフエライ
ト粉末を充填材として用いたポリマーを含浸させ
ることによつて、PC版の全面が電波吸収性能を
持つようにもできるし、また一面は通常のコンク
リートと同様の外観で、他の面は電波吸収性能を
保つようにもできる。 For this purpose, by impregnating activated concrete with a polymer using ferrite powder as a filler, the entire surface of the PC plate can be made to have radio wave absorption performance, and one side can be made to have the same ability as regular concrete. Other aspects of the exterior can also maintain radio wave absorption performance.
更におこし状コンクリートの空〓率、孔洞の大
きさ等は、調合、調合用粗骨材の粒度、細粗骨材
の粒度分布条件等を変えることによつて調整でき
るので、フエライトを充填材として用いたポリマ
ーを含浸してでき上つたPC版の単位体積当りの
フエライト含有率も予測できる。 Furthermore, the porosity, pore size, etc. of raised concrete can be adjusted by changing the mixing ratio, the particle size of the coarse aggregate for mixing, the particle size distribution conditions of the fine aggregate, etc., so ferrite can be used as a filler. The ferrite content per unit volume of the PC plate produced by impregnating the used polymer can also be predicted.
なお必要に応じて、フエライトだけをおこし状
コンクリートの中央部に充填し、表層部だけフエ
ライト混入のポリマーを含浸する方法、或いはお
こし状コンクリートの中央部、内部にフエライト
を充填し、表層部だけにポリマーを含浸させる方
法も用いられ、何れの方法によつても、電波吸収
性能を有するPC版が製作される。 If necessary, it is possible to fill only the center of the raised concrete with ferrite and impregnate only the surface layer with a polymer containing ferrite, or fill the center and inside of the raised concrete with ferrite and only the surface layer. A method of impregnating it with a polymer is also used, and by either method, a PC plate with radio wave absorption performance can be produced.
また前記おこし状コンクリートは、調合、骨材
の種類を変えることによつて、コンクリートの重
量が広く変えられる。 Furthermore, the weight of the concrete can be varied widely by changing the mixture and the type of aggregate.
なお前記したように、細骨材率を極端に低くす
るか、細骨材を用いないおこし状コンクリート
は、骨材として人口軽量骨材を用いたコンクリー
トも、天熱骨材を用いたコンクリートも共に、乾
燥収縮が早く終る。このおこし状コンクリートを
更に絶対乾燥状態、あるいはこれに近い状態にま
で乾燥させたのち、ポリマーを含浸させ完成する
ので、ポリマーが硬化した後は体積の変化がな
く、あつても僅少である。 As mentioned above, concrete with an extremely low fine aggregate ratio or no fine aggregate is used for both concrete using artificial lightweight aggregate and natural aggregate. In both cases, drying shrinkage ends quickly. This raised concrete is further dried to an absolute dry state or a state close to this, and then impregnated with polymer to complete the process, so there is no change in volume after the polymer has hardened, and if there is, it is minimal.
更に骨材としてアルカリ反応性骨材が混入され
ても、コンクリートが乾燥した状態で製品が完成
し、ポリマーは付着性がよく水密になるので、製
品が完成した後は、骨材反応による被害、ひび割
れが発生する惧れがない。 Furthermore, even if alkali-reactive aggregate is mixed as aggregate, the product will be completed when the concrete is dry, and polymers have good adhesion and become watertight, so once the product is completed, there will be no damage caused by aggregate reaction. There is no risk of cracks occurring.
なお前記おこし状コンクリートは、使用骨材と
して天然骨材、人口軽骨材、スラグ等の副産物骨
材、またはこれらの混合品、比重が軽く、吸水率
が大きい所謂低品質骨材等も利用することができ
る。 In addition, for the above-mentioned concrete, natural aggregates, artificial light aggregates, by-product aggregates such as slag, mixtures thereof, and so-called low-quality aggregates with low specific gravity and high water absorption are also used as aggregates. be able to.
更にまたおこし状コンクリートは、鉄筋コンク
リートとして用いるためには、鉄筋の防蝕のため
に何等かの措置を必要とするが、ポリマー含浸効
果によつて防蝕性が保持される。 Furthermore, in order to use reinforced concrete as reinforced concrete, some measures are required to prevent corrosion of the reinforcing bars, but the corrosion resistance is maintained due to the polymer impregnation effect.
（発明の効果）
本発明によれば前記したように、細骨材率を10
％以下と極端に低くするか、細骨材を用いない通
水性を有し、他の流動体を含浸し易いおこし状の
コンクリートを打設して、同打設コンクリートを
養生したのち絶対乾燥状態、またはこれとほぼ同
等の状態にまで乾燥してフエライトを混入したポ
リマーを効果的に含浸させ、同ポリマーを含浸し
た段階でも体積変化が小で、電波吸収性能を有す
るPC版を製造しうるものである。(Effect of the invention) According to the present invention, as described above, the fine aggregate ratio is reduced to 10
% or less, or pour concrete that is water-permeable and easily impregnated with other fluids without using fine aggregate, cure the poured concrete, and then leave it in an absolutely dry state. , or a PC plate that can be dried to almost the same state and effectively impregnated with a polymer mixed with ferrite, with little volume change even after impregnation with the same polymer, and that can produce a PC plate that has radio wave absorption performance. It is.
Claims (1)
骨材を用いないおこし状のコンクリートを打設
し、同打設コンクリートを養生したのち絶対乾燥
状態、またはこれとほぼ同等の状態にまで乾燥
し、次いで同コンクリートにフエライトを混入し
たポリマーを含浸させることを特徴とする電波吸
収性能を有する無収縮性PC版の製造方法。1 Either reduce the fine aggregate ratio to an extremely low level of 10% or less, or pour concrete that does not use fine aggregate, and after curing the poured concrete, leave it in an absolutely dry state or a state almost equivalent to this. 1. A method for producing a non-shrinkable PC plate having radio wave absorption performance, which comprises: drying the concrete to a maximum temperature, and then impregnating the same concrete with a polymer mixed with ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9632287A JPS63262899A (en) | 1987-04-21 | 1987-04-21 | Manufacture of non-shrinkable pc board with electric wave absorbing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9632287A JPS63262899A (en) | 1987-04-21 | 1987-04-21 | Manufacture of non-shrinkable pc board with electric wave absorbing performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63262899A JPS63262899A (en) | 1988-10-31 |
| JPH0216037B2 true JPH0216037B2 (en) | 1990-04-13 |
Family
ID=14161776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9632287A Granted JPS63262899A (en) | 1987-04-21 | 1987-04-21 | Manufacture of non-shrinkable pc board with electric wave absorbing performance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63262899A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556320A (en) * | 1978-06-27 | 1980-01-17 | Ritsuo Hasumi | Spectral module |
| JPS584205A (en) * | 1981-06-30 | 1983-01-11 | 信越ポリマ−株式会社 | Radio wave shielding material |
| JPS6094799A (en) * | 1983-10-27 | 1985-05-27 | ニチアス株式会社 | Panel for radio wave absorbing wall |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6242559Y2 (en) * | 1980-01-29 | 1987-10-31 |
-
1987
- 1987-04-21 JP JP9632287A patent/JPS63262899A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556320A (en) * | 1978-06-27 | 1980-01-17 | Ritsuo Hasumi | Spectral module |
| JPS584205A (en) * | 1981-06-30 | 1983-01-11 | 信越ポリマ−株式会社 | Radio wave shielding material |
| JPS6094799A (en) * | 1983-10-27 | 1985-05-27 | ニチアス株式会社 | Panel for radio wave absorbing wall |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63262899A (en) | 1988-10-31 |
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