JPH0825193B2 - Aerated concrete product manufacturing method - Google Patents
Aerated concrete product manufacturing methodInfo
- Publication number
- JPH0825193B2 JPH0825193B2 JP29936889A JP29936889A JPH0825193B2 JP H0825193 B2 JPH0825193 B2 JP H0825193B2 JP 29936889 A JP29936889 A JP 29936889A JP 29936889 A JP29936889 A JP 29936889A JP H0825193 B2 JPH0825193 B2 JP H0825193B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- rust preventive
- styrene
- pigment
- aerated concrete
- 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 - Fee Related
Links
- 239000004567 concrete Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 37
- 239000000049 pigment Substances 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 23
- 230000003449 preventive effect Effects 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 13
- 229910052791 calcium Inorganic materials 0.000 claims description 13
- 239000011575 calcium Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 12
- 229920005792 styrene-acrylic resin Polymers 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 6
- 239000011381 foam concrete Substances 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 239000004606 Fillers/Extenders Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000010981 drying operation Methods 0.000 description 4
- 238000007602 hot air drying Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
- Producing Shaped Articles From Materials (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、例えば工業化住宅用パネル等の気泡コンク
リート製品の製造方法に関し、特にその中に埋設される
補強鉄筋の防錆に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing an aerated concrete product such as a panel for industrialized houses, and more particularly to rust prevention of a reinforcing steel bar embedded therein.
［背景技術］ セメントとケイ砂を主原料とし、気泡が混入されたコ
ンクリートスラーを補強鉄筋が配置された成形用型枠内
に打設し、一次的に硬化させた後、高温、高圧のオート
クレーブ中で養生させることにより製造される気泡コン
クリートパネルが実用化されている。この気泡コンクリ
ートパネルの製造において、原材料の一部としてアルミ
ナセメントのような急硬材を用いることにより、コンク
リートスラリーを成形用型枠内に打設した後、パネルの
早期脱型を図っている。[Background Art] A concrete slur containing cement and silica sand as main raw materials and mixed with air bubbles is placed in a molding formwork in which reinforcing bars are arranged and temporarily cured, and then a high temperature, high pressure autoclave. Aerated concrete panels produced by curing in the air have been put to practical use. In the production of this aerated concrete panel, a rapid hardening material such as alumina cement is used as a part of the raw material, and after the concrete slurry is placed in the molding frame, the panel is quickly demolded.
［発明が解決しようとする課題］ 上述した気泡コンクリートパネルの製造において、そ
の中に埋設される補強鉄筋が水分により腐食するのを防
止するため、この鉄筋に例えばスチレン−アクリル系樹
脂を防錆剤として塗装している。[Problems to be Solved by the Invention] In the production of the above-described cellular concrete panel, in order to prevent the reinforcing reinforcing bars embedded therein from being corroded by moisture, for example, a styrene-acrylic resin is applied to the reinforcing bars as an anticorrosive agent. Is painted as.
しかし、スチレン−アクリル系防錆剤が塗装された鉄
筋は、オートクレーブ養生の際、スチレン−アクリル系
樹脂が熱膨張して気泡コンクリートにクラックが入ると
いう問題点があった。特に、急硬材として使用するアル
ミナセメントは、80℃付近で転位して結晶構造が緩んで
強度が下がるため、余計クラックが入り易い状態になっ
ていた。However, the reinforcing bar coated with the styrene-acrylic anticorrosive has a problem that the styrene-acrylic resin is thermally expanded during the autoclave curing to cause cracks in the cellular concrete. In particular, the alumina cement used as a quick-hardening material was dislocated at around 80 ° C. and the crystal structure was loosened to lower the strength, so that extra cracks were likely to occur.
なお、クラック発生防止のため、オートクレーブ養生
前に気泡コンクリートの強度を上げると、オートクレー
ブ養生による強度発現が進みにくくなるため、逆に得ら
れた製品の強度が低くなる。If the strength of the cellular concrete is increased before curing the autoclave in order to prevent cracks from being generated, it becomes difficult for the strength of the concrete to develop due to the curing of the autoclave, so that the strength of the obtained product decreases.
本発明は、スチレン−アクリル系防錆剤が塗装された
鉄筋が埋設された気泡コンクリート製品の製造におい
て、製品強度を低下させることなく、また必要な防錆性
能を維持しながら、クラックの発生を防止することがで
きる製造方法を提供することを目的とする。INDUSTRIAL APPLICABILITY The present invention, in the production of an aerated concrete product in which a reinforcing bar coated with a styrene-acrylic anticorrosive agent is embedded, does not reduce the product strength, and while maintaining the required anticorrosion performance, the occurrence of cracks is prevented. It is an object of the present invention to provide a manufacturing method capable of preventing the above.
［課題を解決するための手段及び作用］ 本発明は、スチレン−アクリル系樹脂が防錆剤として
塗装された鉄筋が埋設された気泡コンクリート製品の製
造方法において、前記スチレン−アクリル系樹脂に体質
顔料のシリカ系顔料とカルシウム系顔料を混合した防錆
剤を鉄筋に塗装する工程と、前記鉄筋を成形用型枠内に
配置して気泡が混入されたコンクリートスラリーを打設
する工程と、成形された製品をオートクレーブ養生する
工程とを有することを特徴とする。[Means and Actions for Solving the Problems] The present invention relates to a method for producing a cellular concrete product in which reinforcing bars coated with a styrene-acrylic resin as a rust preventive are embedded, and the styrene-acrylic resin is an extender pigment. A step of applying a rust preventive agent in which a silica-based pigment and a calcium-based pigment are mixed to a reinforcing bar, a step of placing the reinforcing bar in a molding frame and placing a concrete slurry in which air bubbles are mixed, and molded. And a step of subjecting the obtained product to autoclave curing.
このように、スチレン−アクリル系樹脂にシリカ系顔
料とカルシウム系顔料を混合した防錆剤を鉄筋に塗装す
ることにより、オートクレーブ養生の際における防錆剤
の熱膨張を抑える。In this way, by coating the rust preventive agent in which the silica pigment and the calcium pigment are mixed with the styrene-acrylic resin on the reinforcing bar, thermal expansion of the rust preventive during autoclave curing is suppressed.
スチレン−アクリル系樹脂、シリカ系顔料及びカルシ
ウム系顔料の配合割合は、次の通りとする。即ち、有機
固形分のスチレン−アクリル系樹脂30〜60重量部を含む
エマルジョン70〜30重量部に対して、シリカ系顔料とカ
ルシウム系顔料の両者を30〜70重量部とする。また、シ
リカ系顔料とカルシウム系顔料の配合比は、重量比で3:
1〜1:1の範囲とするのが望ましい。なお、シリカ系顔料
は、SiO2を主成分とし、カルシウム系顔料は、CaCO3を
主成分とする。The mixing ratio of the styrene-acrylic resin, the silica pigment and the calcium pigment is as follows. That is, 30 to 70 parts by weight of both the silica-based pigment and the calcium-based pigment are used with respect to 70 to 30 parts by weight of the emulsion containing 30 to 60 parts by weight of the organic solid content styrene-acrylic resin. The mixing ratio of the silica-based pigment and the calcium-based pigment is 3: 3 by weight.
It is desirable that the range is 1 to 1: 1. The silica-based pigment has SiO 2 as a main component, and the calcium-based pigment has CaCO 3 as a main component.
前記防錆剤中には、スチレン−アクリル系樹脂、体質
顔料であるシリカ系顔料及びカルシウム系顔料以外に分
散剤等の所要の添加物を適宜添加することができる。In addition to the styrene-acrylic resin, the silica-based pigment which is an extender pigment, and the calcium-based pigment, necessary additives such as a dispersant can be appropriately added to the rust preventive agent.
この防錆剤は、１度塗りで熱い塗膜を形成した場合、
乾燥過程でクラックが発生して防錆効果が得られなくな
ったり、塗りむらやピンホール発生の原因となるので、
薄い塗膜で２度塗りを行うのがよい。This rust preventive agent, when applied once to form a hot coating,
Since cracks may occur during the drying process and the rust prevention effect may not be obtained, or it may cause uneven coating or pinholes.
It is advisable to apply a thin coat twice.
気泡が混入されたコンクリートスラリーの作製法は、
予め作った泡をスラリーに混合する方法、Al粉のような
発泡剤を用い、型枠にスラリーを打設後発泡させる方法
等任意である。The method of producing concrete slurry containing air bubbles is
Any method may be used, such as a method of mixing bubbles made in advance with the slurry, a method of using a foaming agent such as Al powder, and pouring the slurry into a mold and then foaming.
［実施例］ 本発明を軽量気泡コンクリートパネルの製造に適用し
た場合の実施例を説明する。[Example] An example in which the present invention is applied to the production of a lightweight cellular concrete panel will be described.
実施例１ 有機固形分としてスチレン−アクリル共重合樹脂を40
重量部含有するエマルジョン100重量部に対して、体質
顔料80重量部及び分散剤１重量部を混合して水系樹脂防
錆剤を調製した。この体質顔料中には、シリカ系顔料と
して珪石粉末（SiO2）及びカルシウム系顔料として炭酸
カルシウム（CaCO3）をそれぞれ重量比で1:1含む。Example 1 40% styrene-acrylic copolymer resin was used as an organic solid content.
An aqueous resin rust preventive agent was prepared by mixing 80 parts by weight of an extender pigment and 1 part by weight of a dispersant with 100 parts by weight of an emulsion contained. This extender pigment contains silica powder (SiO 2 ) as a silica pigment and calcium carbonate (CaCO 3 ) as a calcium pigment in a weight ratio of 1: 1.
次に、予め脱脂、洗浄処理された補強鉄筋を、上記組
成を有する水系樹脂防錆剤中に浸漬することにより塗装
した後、この鉄筋を120℃の熱風乾燥炉中に30分間置い
て乾燥させた。この塗装及び乾燥操作は、２回繰り返し
て行った。Next, the degreased and washed reinforcing reinforcing bars were coated by immersing them in an aqueous resin rust preventive having the above composition, and the reinforcing bars were placed in a hot air drying oven at 120 ° C for 30 minutes to dry. It was This coating and drying operation was repeated twice.
このように防錆処理が施された鉄筋を成形用型枠内に
設置し、普通ポルトランドセメント45重量部、珪石粉末
55重量部、アルミナセメント10重量部、水55重量部、気
泡剤〔フォーミックスCII（商品名）、ミサワセラミッ
クケミカル（株）製〕１重量部より成る軽量気泡コンク
リートスラリーを流し込んだ。スラリーが凝固した後、
脱型し、次に180℃、10気圧のオートクレーブ中で８時
間養生して本実施例に係る軽量気泡コンクリートパネル
を製造した。In this way, the rust-proofed rebar was installed in the molding frame, and 45 parts by weight of ordinary Portland cement and silica stone powder were used.
A lightweight cellular concrete slurry consisting of 55 parts by weight, 10 parts by weight of alumina cement, 55 parts by weight of water, and 1 part by weight of a foaming agent [Formix CII (trade name), manufactured by Misawa Ceramic Chemical Co., Ltd.] was poured. After the slurry has solidified,
After demolding, it was cured in an autoclave at 180 ° C. and 10 atm for 8 hours to manufacture a lightweight cellular concrete panel according to this example.
実施例２ 有機固形分としてスチレン−アクリル共重合樹脂を40
重量部含有するエマルジョン100重量部に対して、アス
ファルト系エマルジョン40重量部、体質顔料90重量部及
び分散剤３重量部を混合して水系樹脂防錆剤を調製し
た。この体質顔料中には、シリカ系顔料として珪石粉末
及びカルシウム系顔料として炭酸カルシウムをそれぞれ
重量比で3:1含む。Example 2 40% styrene-acrylic copolymer resin was used as an organic solid content.
An aqueous resin rust preventive agent was prepared by mixing 40 parts by weight of an asphalt emulsion, 90 parts by weight of an extender pigment and 3 parts by weight of a dispersant with 100 parts by weight of the emulsion contained. This extender pigment contains silica powder as a silica-based pigment and calcium carbonate as a calcium-based pigment in a weight ratio of 3: 1.
次に、予め脱脂、洗浄処理された補強鉄筋を、上記組
成を有する水系樹脂防錆剤中に浸漬することにより塗装
した後、この鉄筋を120℃の熱風乾燥炉中に30分間置い
て乾燥させた。この塗装及び乾燥操作は、２回繰り返し
て行った。Next, the degreased and washed reinforcing reinforcing bars were coated by immersing them in an aqueous resin rust preventive having the above composition, and the reinforcing bars were placed in a hot air drying oven at 120 ° C for 30 minutes to dry. It was This coating and drying operation was repeated twice.
このように防錆処理が施された鉄筋を成形用型枠内に
設置し、実施例１と同様の組成を有する軽量気泡コンク
リートスラリーを流し込んだ。スラリーが凝固した後、
脱型し、次に実施例１と同様の条件でオートクレーブ養
生を施して本実施例に係る軽量気泡コンクリートパネル
を製造した。In this way, the rust-proofed reinforcing bars were placed in a molding mold, and a lightweight cellular concrete slurry having the same composition as in Example 1 was poured. After the slurry has solidified,
After demolding, autoclave curing was performed under the same conditions as in Example 1 to produce a lightweight cellular concrete panel according to this example.
比較例１ スチレン−アクリル共重合樹脂を40重量部含有するエ
マルジョン100重量部に対して、珪石粉末60重量部、炭
酸カルシウム80重量部及び分散剤１重量部を混合して水
系樹脂防錆剤を調製した。Comparative Example 1 60 parts by weight of silica powder, 80 parts by weight of calcium carbonate and 1 part by weight of a dispersant were mixed with 100 parts by weight of an emulsion containing 40 parts by weight of a styrene-acrylic copolymer resin to prepare an aqueous resin rust preventive agent. Prepared.
次に、予め脱脂、洗浄処理された補強鉄筋を、上記組
成を有する水系樹脂防錆剤中に浸漬することにより塗装
した後、この鉄筋を120℃の熱風乾燥炉中に30分間置い
て乾燥させた。この塗装及び乾燥操作は、２回繰り返し
て行った。Next, the degreased and washed reinforcing reinforcing bars were coated by immersing them in an aqueous resin rust preventive having the above composition, and the reinforcing bars were placed in a hot air drying oven at 120 ° C for 30 minutes to dry. It was This coating and drying operation was repeated twice.
このように防錆処理が施された鉄筋を成形用型枠内に
設置し、実施例と同様にして軽量気泡コンクリートスラ
リーを打設した後、オートクレーブ養生を施して本比較
例に係る軽量気泡コンクリートパネルを製造した。In this way, the rust-proofed reinforcing bars were installed in the forming mold, and the lightweight cellular concrete slurry was placed in the same manner as in the example, and then autoclave curing was applied to the lightweight cellular concrete according to this comparative example. The panel was manufactured.
比較例２ スチレン−アクリル共重合体エマルジョン100重量部
に対して、珪石粉末20重量部、タルク（3MgO・4SiO2・H
2O）60重量部及び分散剤１重量部を混合して水系樹脂防
錆剤を調製した。Comparative Example 2 100 parts by weight of styrene-acrylic copolymer emulsion, 20 parts by weight of silica powder, talc (3 MgO.4SiO 2 .H
2 O) 60 parts by weight and 1 part by weight of the dispersant were mixed to prepare an aqueous resin rust preventive agent.
次に、予め脱脂、洗浄処理された補強鉄筋を、上記組
成を有する水系樹脂防錆剤中に浸漬することにより塗装
した後、この鉄筋を120℃の熱風乾燥炉中に30分間置い
て乾燥させた。この塗装及び乾燥操作は、２回繰り返し
て行った。Next, the degreased and washed reinforcing reinforcing bars were coated by immersing them in an aqueous resin rust preventive having the above composition, and the reinforcing bars were placed in a hot air drying oven at 120 ° C for 30 minutes to dry. It was This coating and drying operation was repeated twice.
このように防錆処理が施された鉄筋を成形用型枠内に
設置し、実施例と同様にして軽量気泡コンクリートスラ
リーを打設した後、オートクレーブ養生を施して本比較
例に係る軽量気泡コンクリートパネルを製造した。In this way, the rust-proofed reinforcing bars were installed in the forming mold, and the lightweight cellular concrete slurry was placed in the same manner as in the example, and then autoclave curing was applied to the lightweight cellular concrete according to this comparative example. The panel was manufactured.
上記実施例及び比較例に係る各軽量気泡コンクリート
パネルについて、オートクレーブ養生前とオートクレー
ブ養生後におけるクラックの発生状況を観察した結果を
下記の表−１に示す。Table 1 below shows the results of observing the state of crack generation before autoclave curing and after autoclave curing for each of the lightweight cellular concrete panels according to the above Examples and Comparative Examples.
この表で、○はクラックの発生がない、×は極僅かの
クラックの発生が見られる。××はクラックの発生が顕
著である（クラックの幅が0.2mm以上）をそれぞれ示
す。 In this table, ∘ indicates that no cracks were generated, and x indicates that very few cracks were generated. XX indicates that cracking is remarkable (crack width is 0.2 mm or more).
この表より、実施例に係る各軽量気泡コンクリートパ
ネルの製造方法によれば、スチレン−アクリル系樹脂に
シリカ系顔料とカルシウム系顔料を混合した防錆剤を鉄
筋に塗装することにより、オートクレーブ養生の際にお
ける防錆剤の熱膨張を抑えることができるため、オート
クレーブの養生前と養生後のいずれにおいてもクラック
の発生が見られないことがわかる。From this table, according to the method for producing each lightweight cellular concrete panel according to the example, by applying a rust preventive agent in which the silica-based pigment and the calcium-based pigment are mixed to the styrene-acrylic resin on the reinforcing bar, autoclave curing is performed. It can be seen that, since the thermal expansion of the rust preventive agent at that time can be suppressed, no crack is observed before or after curing the autoclave.
また、オートクレーブ養生前にクラック防止のために
パネルを強化する必要がなく、強度が弱いままオートク
レーブ養生を行うので、この養生によってパネルの強化
が理想的に進み、充分な強度を有するパネルが得られ
る。In addition, since it is not necessary to strengthen the panel to prevent cracking before autoclave curing, autoclave curing is performed while the strength is weak, so the panel is ideally strengthened by this curing, and a panel having sufficient strength can be obtained. .
更に、鉄筋に防錆塗装を２回施しているので、鉄筋の
エッジ部や溶接部位のように塗装されにくい部分にも均
一な厚さで防錆剤の塗膜を形成することができる。Further, since the rust-preventive coating is applied to the reinforcing bar twice, it is possible to form a coating film of the rust-preventive agent with a uniform thickness even on a portion of the reinforcing bar which is difficult to be coated such as an edge portion or a welded portion.
これに対して、比較例１によれば、体質顔料としてシ
リカ系顔料とカルシウム系顔料を共に使用しているが、
両者の配合比が3:4と望ましい比率（3:1〜1:1）から外
れているので、オートクレーブ養生の際における防錆剤
の熱膨張によってクラックが発生する。On the other hand, according to Comparative Example 1, both the silica-based pigment and the calcium-based pigment are used as the extender pigment.
Since the compounding ratio of both is 3: 4, which is outside the desired ratio (3: 1 to 1: 1), cracks occur due to thermal expansion of the rust preventive agent during autoclave curing.
また、比較例２によれば、体質顔料としてカルシウム
系顔料を使用していないので、オートクレーブ養生の際
に防錆剤が熱膨張して、クラックが発生する。Further, according to Comparative Example 2, since the calcium-based pigment is not used as the extender pigment, the rust preventive agent thermally expands during autoclave curing, and cracks occur.
なお、上記実施例は、軽量気泡コンクリートパネルを
例に本発明の製造方法を説明したが、気泡コンクリート
製品の具体例は任意である。In addition, although the said Example demonstrated the manufacturing method of this invention taking the lightweight aerated concrete panel as an example, the specific example of an aerated concrete product is arbitrary.
［発明の効果］ 本発明によれば、スチレン−アクリル系樹脂が防錆剤
として塗装された鉄筋が埋設された気泡コンクリート製
品の製造において、クラックの発生を防止することがで
き、これにより良好な品質を有する気泡コンクリート製
品が得られる。[Effect of the Invention] According to the present invention, it is possible to prevent the occurrence of cracks in the production of an aerated concrete product in which a reinforcing bar coated with a styrene-acrylic resin as a rust preventive is embedded, which is preferable. An aerated concrete product with quality is obtained.
Claims (1)
塗装された鉄筋が埋設された気泡コンクリート製品の製
造方法において、 前記スチレン−アクリル系樹脂にシリカ系顔料とカルシ
ウム系顔料を混合した防錆剤を鉄筋に塗装する工程と、 前記鉄筋を成形用型枠内に配置して気泡が混入されたコ
ンクリートスラリーを打設する工程と、 成形さた製品をオートクレーブ養生する工程と、 を有することを特徴とする気泡コンクリート製品の製造
方法。1. A method for producing an aerated concrete product in which reinforcing bars coated with a styrene-acrylic resin as a rust preventive are embedded, wherein a rust preventive prepared by mixing a silica pigment and a calcium pigment in the styrene acrylic resin. A step of applying the agent to a reinforcing bar, a step of placing the reinforcing bar in a molding mold and placing a concrete slurry containing air bubbles, and a step of curing the molded product in an autoclave. A method for producing an aerated concrete product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29936889A JPH0825193B2 (en) | 1989-11-17 | 1989-11-17 | Aerated concrete product manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29936889A JPH0825193B2 (en) | 1989-11-17 | 1989-11-17 | Aerated concrete product manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03159705A JPH03159705A (en) | 1991-07-09 |
| JPH0825193B2 true JPH0825193B2 (en) | 1996-03-13 |
Family
ID=17871659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29936889A Expired - Fee Related JPH0825193B2 (en) | 1989-11-17 | 1989-11-17 | Aerated concrete product manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0825193B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013233767A (en) * | 2012-05-10 | 2013-11-21 | Sumitomo Metal Mining Siporex Kk | Method for manufacturing reinforcement for light weight cellular concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4222960B2 (en) | 2004-03-19 | 2009-02-12 | 三洋電機株式会社 | Digital receiver |
-
1989
- 1989-11-17 JP JP29936889A patent/JPH0825193B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4222960B2 (en) | 2004-03-19 | 2009-02-12 | 三洋電機株式会社 | Digital receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03159705A (en) | 1991-07-09 |
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