JPS6339331A - Concrete molded form and manufacture thereof - Google Patents
Concrete molded form and manufacture thereofInfo
- Publication number
- JPS6339331A JPS6339331A JP7688386A JP7688386A JPS6339331A JP S6339331 A JPS6339331 A JP S6339331A JP 7688386 A JP7688386 A JP 7688386A JP 7688386 A JP7688386 A JP 7688386A JP S6339331 A JPS6339331 A JP S6339331A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- surface layer
- molded body
- concrete
- mortar
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000011347 resin Substances 0.000 claims description 42
- 229920005989 resin Polymers 0.000 claims description 42
- 239000002344 surface layer Substances 0.000 claims description 35
- 239000010410 layer Substances 0.000 claims description 33
- 239000004570 mortar (masonry) Substances 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 23
- 239000012778 molding material Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 description 6
- 238000006253 efflorescence Methods 0.000 description 3
- 206010037844 rash Diseases 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000003601 intercostal effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は９モルタルを成型して作られるコンクリート
成型体に関し、さらに詳しくいうと。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a concrete molded body made by molding mortar, and more specifically.
基層体の表面に表層体が形成されたコンクリート成型体
に関する。The present invention relates to a concrete molded body in which a surface layer body is formed on the surface of a base layer body.
土木、建築等の分野で使用されるコンクリート成型体に
は１表面への彩色、内部の保護等の目的で、主体となる
基層体■の表面に表層体２を形成することがしばしば行
われる。例えば。In concrete molded bodies used in fields such as civil engineering and architecture, a surface layer 2 is often formed on the surface of the main base layer (1) for the purpose of coloring the surface, protecting the interior, etc. for example.
第１図と第２図は、基層体１と表層体２とからなるコン
クリートブロックである。この種のコンクリートブロッ
クで、公園、道路、ショッピングセンターのアプローヂ
エリア等、特に人が多く染まる場所の舗装等に使用され
るものについては２表層体２に鮮やかな彩色を施すこと
が多い。1 and 2 show a concrete block consisting of a base layer 1 and a surface layer 2. FIG. Concrete blocks of this type that are used for paving areas that are especially crowded with people, such as parks, roads, and approach areas of shopping centers, are often painted with bright colors on their two surfaces.
従来、Ｖ記の表層体２ば２モルタルに顔料等を加えたも
のを使用し、型の中で基層体１を成型するのと同時に成
型されていた。Conventionally, a mortar prepared by adding a pigment or the like to the surface layer 2 of V is used, and the surface layer 2 is molded in a mold at the same time as the base layer 1 is molded.
〔発明が解決し７ようとする問題点〕 しかし１モルタルで成型された表層体２は。[Problems that the invention attempts to solve] However, the surface layer 2 is molded with 1 mortar.
初期に水で濡れると、セメントに含まれるアルカリ成分
と、細・同相に含まれる珪酸分とが反応し、珪酸塩が生
じる。その後表層体２が乾燥すると、この珪酸塩が白い
結晶として析出するため１表面が白く汚れる。いわゆる
白華現象が起こる。珪酸塩の結晶は、その後暫（消えず
に表面に残るため、極めて見苦しく、折角の鮮やかな彩
色が損なわれる。When cement is initially wetted with water, the alkaline components contained in the cement react with the silicic acid contained in the fine and homogeneous particles, producing silicates. After that, when the surface layer 2 dries, the silicate precipitates as white crystals, so that the surface becomes stained white. A so-called efflorescence phenomenon occurs. The silicate crystals remain on the surface for a while, making them extremely unsightly and damaging the bright colors.
また２モルタルで成型された表層体２は、コンクリート
成型体の長期的な使用により、雨水の浸透等に伴う風化
を受けやすい。Moreover, the surface layer body 2 molded with mortar is susceptible to weathering due to penetration of rainwater and the like due to long-term use of the concrete molded body.
こうした従来の表層体２の欠点を解消するため３モルタ
ルに代わり、樹脂等を使用した表層体の使用がこれまで
にも検討されてきた。しかし、樹脂を成型するには、未
硬化の樹脂を型の中へ導入して硬化させなければならな
い。ところが、流動状の未硬化の樹脂は、粘着性が高く
。In order to eliminate these drawbacks of the conventional surface layer 2, the use of a surface layer using resin or the like instead of mortar has been considered. However, in order to mold resin, uncured resin must be introduced into a mold and cured. However, fluid uncured resin has high stickiness.
コンクリート成型用の型の中にそのま＼導入することは
不可能である。加えて基層体１を形成するだめの粒状の
モルタルとの親和性も悪いため、型の中で基層体１と同
時に成型するは不可能である。It is impossible to directly introduce it into a concrete mold. In addition, it has poor affinity with the granular mortar that forms the base layer 1, so it is impossible to mold it simultaneously with the base layer 1 in a mold.
従って、樹脂で表層体２を形成するとき（：ｌ。Therefore, when forming the surface layer body 2 with resin (:l.
未硬化のパテ状の樹脂を、予め成型、硬化させた基層体
１の表面に塗布する等の手段によらなければならない。A method such as applying an uncured putty-like resin onto the surface of the base layer 1 that has been molded and cured in advance must be used.
しかし、このような塗装による手段は、製造に手数がか
かるだけでなく、基層体１と表層体２とが全く異質のも
ので、かつ異なる手段で形成される結果、層間の一体性
が無（、基層体１からの表層体２の剥離等が起こりやす
い。However, such painting means not only requires a lot of effort to manufacture, but also has the effect that the base layer 1 and the surface layer 2 are completely different and are formed by different means, resulting in a lack of integrity between the layers. , peeling of the surface layer body 2 from the base layer body 1 is likely to occur.
この発明は、従来の表層体２を有するコンクリート成型
体とその製造方法における上記問題点を解決するためな
されたもので、樹脂を主体とする表層体が、基層体の表
面に一体化して成型されたコンクリート成型体を提供す
ることを目的とする。This invention was made in order to solve the above-mentioned problems in the conventional concrete molded body having the surface layer 2 and its manufacturing method. The purpose of this invention is to provide a concrete molded body.
まず、第一の発明によるコンクリート成型体の構成につ
いて説明すると、同成型体は、樹脂粉粒体に細骨材を加
えた樹脂成型材すを１モルタルで成型された基層体１の
表面に圧着し５表層体２を形成したものである。First, to explain the structure of the concrete molded body according to the first invention, the molded body is made by pressing a resin molding material made of resin powder and fine aggregate onto the surface of a base layer 1 molded with one mortar. 5 and a surface layer 2 was formed.
また、第二の発明による上記コンクリート成型体の製造
方法について説明すると、固練モルタルａと、樹脂粉粒
体に細骨材を加えた樹脂成型材すとを、型３の中に層状
に充填する。そして、これら固練モルタルａと樹脂成型
材すを加圧成型し、その後これを養生することにより。Further, to explain the method for manufacturing the concrete molded body according to the second invention, hardening mortar a and a resin molding material (sod), which is a mixture of resin powder and fine aggregate, are filled in a mold 3 in a layered manner. do. Then, the solidified mortar a and the resin molding material are pressure molded and then cured.
互いに圧着された基層体１と表層体２とを形成する。A base layer body 1 and a surface layer body 2 are press-bonded to each other.
上記のように、第一の発明によるコンクリート成型体で
は１表層体２が、１ｂ（脂粉粒体に細骨材を加えた樹脂
成型材すの成型体からなり、これがモルタルで成型され
た基層体１の表面に圧着されているため、基層体１と表
層体２の層界では、セメント、樹脂粉粒体及び細骨材が
混ぜん一体となった組織が形成される。このため。As mentioned above, in the concrete molded body according to the first invention, 1 surface layer body 2 consists of a molded body of resin molding material 1b (fat powder granules and fine aggregate added), and this is a base layer molded with mortar. 1, a structure in which cement, resin powder, and fine aggregate are mixed and integrated is formed at the layer boundary between the base layer 1 and the surface layer 2.For this reason, a structure in which cement, resin powder, and fine aggregate are mixed and integrated is formed.
一体重で１強固な層間の結合状態が形成される。One solid layer forms a strong interlayer bond.
また、樹脂成分として、粉粒体を使用しているため１表
層体２と基層体１とを、型３の中で同時成型することが
できる。即ち、第二の発明による製造方法のように、基
層体１を形成するための固練モルタルａと１表層体２を
形成するための樹脂成型材すとを、型３の中にそれぞれ
層をなすよう充填し、これらを加圧成型することにより
、一体化された基層体１と表層体２を形成することがで
きる。Furthermore, since powder is used as the resin component, the surface layer 2 and the base layer 1 can be molded simultaneously in the mold 3. That is, as in the manufacturing method according to the second invention, the hardening mortar a for forming the base layer body 1 and the resin molding material for forming the surface layer body 2 are placed in layers in the mold 3, respectively. The base layer body 1 and the surface layer body 2 can be formed by filling the base layer body 1 and the surface layer body 2 into one body by filling the base layer body 1 and the surface layer body 2 into one body.
そして７表層体２は２樹脂と細骨材とで形成されており
、セメントが使用されていないため。7. The surface layer 2 is made of 2 resin and fine aggregate, and no cement is used.
モルタルで成型した表層体のように、白華現象が起こら
ない。また２モルタルで成型したものに比べて、緻密な
組織が形成でき、内部組織の弾性も高いため、雨水の浸
透等による風化も受けにくい。No efflorescence occurs like with surface molded with mortar. In addition, compared to those molded with 2 mortars, a denser structure can be formed and the internal structure has higher elasticity, making it less susceptible to weathering due to rainwater penetration.
次に、この発明の実施例と望ましい実施態様を７第二の
発明の製造方法の工程順に説明する。Next, examples and preferred embodiments of the present invention will be explained in the order of steps of the manufacturing method of the seventh invention.
この製造方法では１例えば第３図〜第７図で示すよ・う
な型３が使用される。図示の型３は。In this manufacturing method, a mold 3 as shown in FIGS. 3 to 7, for example, is used. The illustrated type 3 is.
基層体１の端面と側面を形成する側枠４．基層体１の底
面を形成する底板５．及び表層体２の上面を形成する圧
力板６からなる。側枠４は。A side frame 4 forming the end face and side face of the base layer body 1. A bottom plate 5 forming the bottom surface of the base layer body 1. and a pressure plate 6 forming the upper surface of the surface body 2. The side frame 4 is.
固定されているのに対し、底板５は、第３図で示す位置
と第８図で示す位置との間を昇降する。While fixed, the bottom plate 5 moves up and down between the position shown in FIG. 3 and the position shown in FIG.
また、圧力板６には２図示されてない圧力装置が連結さ
れ、第３図の位置から第４図で示すように９側枠４の中
に圧入される。Further, two pressure devices (not shown) are connected to the pressure plate 6, and are press-fitted into the side frame 4 from the position shown in FIG. 3 as shown in FIG. 4.
まず、第３図で示すように、底板５を上昇させて側枠４
の底面を閉じ、この中に固練モルタルａを一様に充填す
る。続いて、第４図で示すように、圧力板６を側枠４の
中に圧太し、固練モルタルａを仮加圧する。First, as shown in FIG. 3, the bottom plate 5 is raised and the side frame 4 is
The bottom of the container is closed, and solidified mortar a is uniformly filled into the container. Subsequently, as shown in FIG. 4, the pressure plate 6 is pressed into the side frame 4, and the solidified mortar a is temporarily pressurized.
第５図で示すように、圧力板６を」−昇さ−ｌた後、仮
加圧した」二層固練モルタルａの」二に、樹脂粉粒体に
適量の細儒材を加えて混合した樹脂成型材すを一様に充
填する。次いで、第６図で示すように、圧力板６を側枠
４の中に圧太し。As shown in Fig. 5, after raising the pressure plate 6, an appropriate amount of fine powder was added to the temporarily pressurized two-layer solidified mortar a. Fill the mixed resin molding material uniformly. Next, as shown in FIG. 6, the pressure plate 6 is pressed into the side frame 4.
固練モルタルａと共に、樹脂成型材すを本加圧し、成型
する。Together with the solidified mortar a, the resin molding material is subjected to main pressure and molded.
第７図で示すよ・）に、底板５を下降さ・ｌ！、成型体
を側枠４から脱型した後、これを養生し。Lower the bottom plate 5 to ) as shown in Figure 7. After removing the molded body from the side frame 4, it is cured.
固練モルタルａと樹脂成型祠すを硬化させる。Harden the hardening mortar a and the resin molding mortar.
これによって、第一の発明によるコンクリ−Ｉ・成型体
ができあがる。As a result, the concrete I molded body according to the first invention is completed.
通常の量産工程では、上記のような型３や圧力装置等の
動作が、所定の順序で予め設定されたシーケンス等に従
って実行される。In a normal mass production process, the operations of the mold 3, pressure device, etc. as described above are performed in a predetermined order according to a preset sequence.
固練モルタルａや樹脂成型材すの中に混合する細骨材は
、砂が最も一般的であるが、必要に応して人二［軽量骨
材等、その他の骨材、またはこれらを砂と混合したもの
等が使用される。樹脂粉粒体は、フェノール樹脂、アク
リル樹脂。The most common fine aggregate to be mixed into solidified mortar and resin molding material is sand, but if necessary, other aggregates such as lightweight aggregate, or these may be mixed with sand. A mixture of these is used. Resin powders include phenolic resin and acrylic resin.
エボキシ樹脂等の粉末、または細かい粒体がよく、特に
エボキシ樹脂粉末が最適である。Powder or fine particles of epoxy resin or the like are preferred, and epoxy resin powder is particularly suitable.
樹脂粉粒体と細骨材の配合比は、容積比にして１：１〜
１：３程度がよい。因に、樹脂粉粒体として、エボキシ
樹脂粉粒体を使用した場合。The blending ratio of resin powder and fine aggregate is 1:1 to 1:1 by volume.
A ratio of about 1:3 is good. Incidentally, when epoxy resin powder is used as the resin powder.
は、１：２前後が最も適当であった。The most appropriate ratio was around 1:2.
樹脂は、一般に着色性が良好であるため１表層体２とし
て彩色した層を形成するときは、予め着色された樹脂粉
粒体を使用するとよい。また、製品に対する原料コスト
等を考慮した場合。Resins generally have good colorability, so when forming a colored layer as the surface layer 2, it is preferable to use pre-colored resin powder. Also, when considering the cost of raw materials for the product, etc.
樹脂粉粒体として２例えば産業廃棄物等として廃棄され
る樹脂粉末や樹脂粒体等を使用することができる。As the resin powder, for example, resin powder, resin granules, etc. that are discarded as industrial waste can be used.
加圧成型工程は、上記のように、固練モルタルａのめの
仮加圧と、樹脂成型＋Ａｂを含む本加圧とに分けて実施
するのが望ましい。しかし。As mentioned above, the pressure molding step is desirably carried out in two parts: temporary pressurization for solidified mortar a and main pressurization including resin molding + Ab. but.
仮加圧を経ずに、型；３の中に層状に充填し７た固練モ
ルタルａと樹脂成型利［）とを一度に力旧ト成型するこ
とによっても成型できる。It can also be molded by force-molding the solidified mortar a, which has been filled in a layer in the mold 3, and the resin molding material 7 at the same time without undergoing temporary pressurization.
また、これらの加圧成型工程では２強い振動を加えなが
ら加圧するのが望ましい。これに、上、って、固練モル
タルａと樹脂成型祠すが充分締め固められ、緻密な組織
と７強固な層間結合状態が得られる。振動をＩＪえなが
ら、厚さ数−１ミリメートルのコンクリート成型体を加
圧成型する場合、加圧力は通常１へ３ｋｇ／ｃｌ程度が
適当であり、振動を与えないときは、それ以」の圧力が
必要である。Further, in these pressure molding steps, it is desirable to apply pressure while applying two strong vibrations. In addition, the compacted mortar a and the resin molding mortar are sufficiently compacted, and a dense structure and a strong interlayer bonding state are obtained. When pressurizing a concrete molded body with a thickness of several millimeters while controlling vibration, the appropriate pressure is usually about 1 to 3 kg/cl, and if no vibration is applied, the pressure should be higher than that. is necessary.
成型体の養生は、常温のま−行うご、とも−（きるが、
できれば加圧成型と同Ｉ、１．或し壮１その（多表層体
２を一旦加熱してからｔ 〕ｌ′Ｊるのが望ましい。例
えば、樹脂粉粒体とＵ７てエボキシ＋Ａ（脂粉粒体を使
用した場合、加圧成型の後１表層体２を８０°Ｃ前後に
加熱し、その後２４肋間稈常温で自然養生する。これに
より、基ＩＮ体１と表層体２が何れも良好な状態で硬化
する。The molded body is cured at room temperature.
If possible, use the same method as pressure molding, 1. Alternatively, it is preferable to heat the multi-surface material 2 once and then heat it.For example, if resin powder and U7 are used together with epoxy+A (fat powder), press molding. The rear 1 surface layer body 2 is heated to around 80° C., and then the 24 intercostal culms are naturally cured at room temperature.As a result, both the base IN body 1 and the surface layer body 2 are cured in a good state.
以上説明した通り、この発明によれば、圧着により、互
いに一体化された基層体１と表層体２が型３の中で同時
に成型できる。そして、セメントを使用しない樹脂を主
体とする表層体２が形成できることから、いわゆる白華
現象等が起こらず、また、風化しにくい表層体２が得ら
れる。As explained above, according to the present invention, the base layer body 1 and the surface layer body 2, which are integrated with each other, can be simultaneously molded in the mold 3 by pressure bonding. Since the surface layer body 2 mainly made of resin can be formed without using cement, a so-called efflorescence phenomenon does not occur and a surface layer body 2 that is resistant to weathering can be obtained.
第１図は、コンクリート成型体の一例を示す幻視１図、
第２図は、第１図のＡ−Ａ線断面図。
第３図〜第８図は、第二の発明の製造工程を示す黙示断
面図である。
１ 基層体 ２−表層体
３ 型 ａ〜固練モルタル１〕 樹脂
成型ヰＡ
発明者ＩＴＩ 坂 隆Figure 1 is a visual diagram showing an example of a concrete molded body;
FIG. 2 is a sectional view taken along line A-A in FIG. 1. 3 to 8 are implicit cross-sectional views showing the manufacturing process of the second invention. 1 Base layer body 2-Surface layer body 3 Type a ~ Hardening mortar 1] Resin molding A Inventor Takashi Saka, ITI
Claims (1)
体２とからなるコンクリート成型体において、樹脂粉粒
体に細骨材を加えた樹脂成型材ｂを、モルタルで成型さ
れた基層体１の表面に圧着して表層体２を形成したこと
を特徴とするコンクリート成型体。 ２、樹脂粉粒体がエボキシ樹脂粉粒体である特許請求の
範囲第１項記載のコンクリート成型体。 ３、コンクリート製の基層体１と、その表面を覆う表層
体２とからなるコンクリート成型体を製造する方法にお
いて、固練モルタルａと、樹脂粉粒体に細骨材を加えた
樹脂成型材ｂとを、型３の中に層状に充填し、これらを
加圧成型した後、養生し、互いに圧着された基層体１と
表層体２とを形成することを特徴とするコンクリート成
型体の製造方法。 ４、加圧工程が、固練モルタルａのみの仮加圧と、樹脂
成型材ｂを含む本加圧とからなる特許請求の範囲第４項
記載のコンクリート成型体の製造方法。 ５、樹脂粉粒体がエボキシ樹脂粉粒体である特許請求の
範囲第４項または第５項記載のコンクリート成型体の製
造方法。[Claims] 1. In a concrete molded body consisting of a base layer 1 made of concrete and a surface layer 2 covering the surface thereof, a resin molding material b, which is a mixture of resin powder and fine aggregate, is mixed with mortar. A concrete molded body characterized in that a surface layer body 2 is formed by pressing onto the surface of a molded base layer body 1. 2. The concrete molded body according to claim 1, wherein the resin powder is an epoxy resin powder. 3. A method for producing a concrete molded body consisting of a base layer 1 made of concrete and a surface layer 2 covering the surface thereof, comprising: hardening mortar a; and resin molding material b prepared by adding fine aggregate to resin granules; A method for manufacturing a concrete molded body, which comprises filling a mold 3 with the following materials in a layered manner, molding them under pressure, and curing them to form a base layer 1 and a surface layer 2 that are pressed together. . 4. The method for manufacturing a concrete molded body according to claim 4, wherein the pressing step comprises preliminary pressing of only the solidified mortar a and main pressing including the resin molding material b. 5. The method for producing a concrete molded body according to claim 4 or 5, wherein the resin powder is an epoxy resin powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7688386A JPS6339331A (en) | 1986-04-03 | 1986-04-03 | Concrete molded form and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7688386A JPS6339331A (en) | 1986-04-03 | 1986-04-03 | Concrete molded form and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6339331A true JPS6339331A (en) | 1988-02-19 |
Family
ID=13618032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7688386A Pending JPS6339331A (en) | 1986-04-03 | 1986-04-03 | Concrete molded form and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6339331A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560080A (en) * | 1978-10-27 | 1980-05-06 | Toyo Tire & Rubber Co | Concrete anticorrosive lining laminate |
| JPS6067144A (en) * | 1983-09-22 | 1985-04-17 | 前田製管株式会社 | Manufacture of concrete block |
-
1986
- 1986-04-03 JP JP7688386A patent/JPS6339331A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560080A (en) * | 1978-10-27 | 1980-05-06 | Toyo Tire & Rubber Co | Concrete anticorrosive lining laminate |
| JPS6067144A (en) * | 1983-09-22 | 1985-04-17 | 前田製管株式会社 | Manufacture of concrete block |
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