JPH04231389A - Production of light-weight high-strength foamed concrete - Google Patents
Production of light-weight high-strength foamed concreteInfo
- Publication number
- JPH04231389A JPH04231389A JP2415989A JP41598990A JPH04231389A JP H04231389 A JPH04231389 A JP H04231389A JP 2415989 A JP2415989 A JP 2415989A JP 41598990 A JP41598990 A JP 41598990A JP H04231389 A JPH04231389 A JP H04231389A
- Authority
- JP
- Japan
- Prior art keywords
- water
- foamed concrete
- light
- soluble resin
- 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.)
- Withdrawn
Links
- 239000011381 foam concrete Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 239000004088 foaming agent Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 abstract description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 3
- 229920000178 Acrylic resin Polymers 0.000 abstract description 2
- 239000004925 Acrylic resin Substances 0.000 abstract description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 polyoxyethylene Polymers 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は非常に軽量でなおかつ強
度のある、吸水性、耐水性に優れた軽量、高強度発泡コ
ンクリートの製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing lightweight, high-strength foamed concrete that is extremely lightweight and strong, and has excellent water absorption and water resistance.
【０００２】0002
【従来の技術】従来より、土木建築分野では無機材料（
セメント、石膏等）が不燃、安価等の理由により多方面
で使用されている。このような無機物は不燃であるため
、防火という面では優れた性能があるが、比重が大きい
ため、建築物に使用した場合に不利な面があつた。この
ような問題を解決する方法としてセメント中に軽量骨材
を含有させたり、起泡剤を用いて気泡を発生させたり、
あるいはアルミ粉等を用いて化学反応によりガスを発生
させ気泡を作るなどの方法による軽量コンクリート組成
物が実用化されている。[Prior Art] Traditionally, inorganic materials (
(cement, gypsum, etc.) are used in many fields because they are nonflammable and inexpensive. Since such inorganic materials are nonflammable, they have excellent fire prevention performance, but their high specific gravity makes them disadvantageous when used in buildings. Methods to solve these problems include incorporating lightweight aggregates into cement, using foaming agents to generate air bubbles, and so on.
Alternatively, lightweight concrete compositions have been put into practical use by using aluminum powder or the like to generate gas and create air bubbles through a chemical reaction.
【０００３】しかしながら、軽量骨材を用いたもの、気
泡剤を用いて気泡を発生させたものは硬化物の強度が比
重に比例し、比重を下げることにより極端に強度が低下
する。そのため比重は０．５が限度であり、それより比
重の低いものは満足できる強度を具備しない。又、化学
反応によつて気泡を作るものには代表的な例としてオー
トクレーブドライトウエイトコンクリート（ＡＬＣ）が
ある。ＡＬＣは比重が０．５程度で強度を満足できるも
のであるが、化学反応で気泡を発生させているため、品
質にバラツキが有り、強度を出すためオートクレーブ処
理を行うので生産設備が大型になる等の欠点があつた。[0003] However, in the case of those using lightweight aggregates or those in which bubbles are generated using a foaming agent, the strength of the cured product is proportional to the specific gravity, and as the specific gravity is lowered, the strength is extremely reduced. Therefore, the upper limit for specific gravity is 0.5, and those with lower specific gravity do not have satisfactory strength. Further, autoclaved light weight concrete (ALC) is a typical example of a material that generates air bubbles through a chemical reaction. ALC has a specific gravity of about 0.5, which satisfies its strength, but because it generates air bubbles through a chemical reaction, its quality varies, and it requires autoclave treatment to increase its strength, which requires large production equipment. There were other drawbacks.
【０００４】0004
【発明が解決しようとする課題】本発明の目的は非常に
軽量でなおかつ強度のある、吸水性、耐水性に優れた軽
量、高強度発泡コンクリートの製造法を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing lightweight, high-strength foamed concrete that is extremely lightweight and strong, and has excellent water absorption and water resistance.
【０００５】[0005]
【課題を解決するための手段】本発明は起泡剤を用いて
発泡させた軽量発泡コンクリートに、水溶性樹脂を含浸
させることを特徴とする軽量、高強度発泡コンクリート
の製造法に係る。[Means for Solving the Problems] The present invention relates to a method for producing lightweight, high-strength foamed concrete, which is characterized by impregnating lightweight foamed concrete foamed using a foaming agent with a water-soluble resin.
【０００６】本発明において軽量、発泡コンクリートは
通常公知の方法で得られるものを使用することができる
。例えばプレフオーム法、プレミツクスフオーム法、ミ
ツクスフオーム法等により得られたものを使用すること
ができる。本発明に用いられる軽量発泡コンクリートは
比重０．２〜０．５までのものが好ましい。比重が０．
２未満のものは作成するのが難しく、比重が０．５を越
えるものは水溶性樹脂を含浸させても効果が薄い。この
ようにして作成した軽量発泡コンクリートに水溶性樹脂
を含浸することにより強度、耐フライアビリテイ性、耐
水性、吸水性が向上する。このとき用いられる水溶性樹
脂としては、スチレン−ブタジエンラバー、酢ビ樹脂、
ポリビニルアルコール、アクリル樹脂、スチレン樹脂、
ウレタン樹脂、エポキシ樹脂、マレイン酸樹脂、ポリア
ミド樹脂、メラミン樹脂、フエノール樹脂等の水溶性樹
脂、エマルジヨン、またその変性物、そして上記の水溶
性樹脂の２種以上の混合物なども使用できる。樹脂を含
浸させる方法としては軽量発泡コンクリートを水溶性樹
脂に浸漬する方法、スプレーによる吹き付け法などを挙
げることができる。この水溶性樹脂の水中における樹脂
の割合は１〜５０％まで使用できるが、好ましくは３〜
２５％である。３％未満であると強度等の向上効果が小
さく、２５％を越えると水溶性樹脂の粘度が高くなるた
め、軽量発泡コンクリートの気泡の中に樹脂が含浸しに
くくなる。また軽量発泡コンクリートに対する樹脂の割
合としては０．５〜１５％までが良い。０．５％未満で
は強度が弱く、１５％を越えると強度はあるが有機分が
多いため不燃でなくなる。また耐水性、吸水性が悪くな
る。不燃ということを考えると特に好ましくは１〜５％
が良い。本発明はその他に有機酸系誘導体、ポリオキシ
エチレン系非イオン及び特殊アニオン活性剤、特殊無機
塩、特殊スルホン基、カルボキシル基含有多元ポリマー
、アルキルアリルスルホン酸塩高縮合物等公知の減水剤
、空気連行剤、高級脂肪酸の防水剤、ポリエーテル系界
面活性剤の乾燥収縮低減剤などの添加剤類、またポリビ
ニルアルコール、スチール、アルミナ、炭素、ガラス、
ナイロン、ポリプロピレン等の繊維類、軽石、パーライ
ト、フライアツシユ、砂利、発泡スチロール等の軽量骨
材等を必要に応じて添加することができる。[0006] In the present invention, lightweight foamed concrete obtained by a commonly known method can be used. For example, those obtained by a preform method, a premix form method, a mix form method, etc. can be used. The lightweight foamed concrete used in the present invention preferably has a specific gravity of 0.2 to 0.5. Specific gravity is 0.
It is difficult to prepare a material with a specific gravity of less than 2, and a material with a specific gravity of more than 0.5 has little effect even if impregnated with a water-soluble resin. By impregnating the lightweight foamed concrete thus prepared with a water-soluble resin, strength, flyability resistance, water resistance, and water absorption are improved. The water-soluble resins used at this time include styrene-butadiene rubber, vinyl acetate resin,
Polyvinyl alcohol, acrylic resin, styrene resin,
Water-soluble resins such as urethane resins, epoxy resins, maleic resins, polyamide resins, melamine resins, and phenol resins, emulsions, modified products thereof, and mixtures of two or more of the above-mentioned water-soluble resins can also be used. Examples of methods for impregnating the resin include a method of dipping lightweight foamed concrete in a water-soluble resin, a spraying method, and the like. The proportion of this water-soluble resin in water can range from 1 to 50%, but preferably from 3 to 50%.
It is 25%. If it is less than 3%, the effect of improving strength etc. will be small, and if it exceeds 25%, the viscosity of the water-soluble resin will increase, making it difficult for the resin to impregnate into the air bubbles of lightweight foamed concrete. The ratio of resin to lightweight foamed concrete is preferably 0.5 to 15%. If it is less than 0.5%, the strength will be weak, and if it exceeds 15%, it will have strength but will not be nonflammable due to the large amount of organic content. In addition, water resistance and water absorption become worse. Especially preferably 1 to 5% considering non-combustibility.
is good. In addition, the present invention also applies to known water reducing agents such as organic acid derivatives, polyoxyethylene nonionic and special anion activators, special inorganic salts, special sulfone groups, carboxyl group-containing polypolymers, alkylaryl sulfonate high condensates, Additives such as air entraining agents, waterproofing agents for higher fatty acids, drying shrinkage reducers for polyether surfactants, as well as polyvinyl alcohol, steel, alumina, carbon, glass,
Fibers such as nylon and polypropylene, lightweight aggregates such as pumice, perlite, fly ash, gravel, and expanded polystyrene may be added as necessary.
【０００７】[0007]
【実施例】実施例１〜４及び比較例１〜３早強ポルトラ
ンドセメント １００部（重量部、以下同様）に対して
水 ４０部、及び表１に記載の割合の起泡剤としてエア
ーセツトＡ（竹本油脂）、水溶性樹脂を用いて発泡コン
クリートを得た。発泡コンクリートの製法はプレフオー
ム法であり、水溶性樹脂は成形品を浸漬させることによ
り含浸させた。樹脂の割合は発泡コンクリートに対する
重量％である。[Examples] Examples 1 to 4 and Comparative Examples 1 to 3 100 parts (by weight, the same applies hereinafter) of early-strength Portland cement, 40 parts of water, and Air Set A (as a foaming agent in the proportions shown in Table 1). Foamed concrete was obtained using Takemoto Yushi) and a water-soluble resin. The foamed concrete was manufactured using the preform method, and the molded product was impregnated with the water-soluble resin by dipping it. The proportion of resin is % by weight relative to foamed concrete.
【０００８】得られた発泡コンクリートの吸水率はサン
プルを６０℃×２４時間で恒量になるまで乾燥し、２０
℃の水に２４時間浸した後の重量差を％で示した。結果
を表１に示す。The water absorption rate of the foamed concrete obtained was determined by drying the sample at 60°C for 24 hours until it reached a constant weight.
The weight difference after immersion in water at ℃ for 24 hours is shown in %. The results are shown in Table 1.
【表１】[Table 1]
【０００９】[0009]
【発明の効果】本発明の方法により、非常に軽量でなお
かつ強度のある、吸水性、耐水性に優れた軽量、高強度
発泡コンクリートを製造することができる。[Effects of the Invention] By the method of the present invention, it is possible to produce lightweight, high-strength foamed concrete that is extremely lightweight and yet strong, and has excellent water absorption and water resistance.
Claims (1)
ンクリートに、水溶性樹脂を含浸させることを特徴とす
る軽量、高強度発泡コンクリートの製造法。1. A method for producing lightweight, high-strength foamed concrete, which comprises impregnating lightweight foamed concrete foamed with a foaming agent with a water-soluble resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2415989A JPH04231389A (en) | 1990-12-27 | 1990-12-27 | Production of light-weight high-strength foamed concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2415989A JPH04231389A (en) | 1990-12-27 | 1990-12-27 | Production of light-weight high-strength foamed concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04231389A true JPH04231389A (en) | 1992-08-20 |
Family
ID=18524246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2415989A Withdrawn JPH04231389A (en) | 1990-12-27 | 1990-12-27 | Production of light-weight high-strength foamed concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04231389A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0673733A2 (en) * | 1994-03-10 | 1995-09-27 | Veit Dennert KG Baustoffbetriebe | Process for making a light weight insulating panel from a porous mineral material |
| FR2732261A1 (en) * | 1995-04-03 | 1996-10-04 | Roubenne Gerard | Method of changing concrete block appearance to that of stone |
| CN105367127A (en) * | 2015-11-25 | 2016-03-02 | 浙江大学自贡创新中心 | Method for enhancing performance of foam concrete by using polytetrafluoroethylene |
| CN109574568A (en) * | 2019-01-24 | 2019-04-05 | 代营伟 | A kind of environment-friendly foaming high performance concrete and preparation method thereof |
-
1990
- 1990-12-27 JP JP2415989A patent/JPH04231389A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0673733A2 (en) * | 1994-03-10 | 1995-09-27 | Veit Dennert KG Baustoffbetriebe | Process for making a light weight insulating panel from a porous mineral material |
| EP0673733A3 (en) * | 1994-03-10 | 1996-06-19 | Dennert Kg Veit | Process for making a light weight insulating panel from a porous mineral material. |
| FR2732261A1 (en) * | 1995-04-03 | 1996-10-04 | Roubenne Gerard | Method of changing concrete block appearance to that of stone |
| CN105367127A (en) * | 2015-11-25 | 2016-03-02 | 浙江大学自贡创新中心 | Method for enhancing performance of foam concrete by using polytetrafluoroethylene |
| CN109574568A (en) * | 2019-01-24 | 2019-04-05 | 代营伟 | A kind of environment-friendly foaming high performance concrete and preparation method thereof |
| CN109574568B (en) * | 2019-01-24 | 2021-05-18 | 泰州市维华混凝土有限公司 | Environment-friendly foamed high-performance concrete and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980312 |