JPH05305608A - Peeling agent for concrete shuttering - Google Patents
Peeling agent for concrete shutteringInfo
- Publication number
- JPH05305608A JPH05305608A JP6565792A JP6565792A JPH05305608A JP H05305608 A JPH05305608 A JP H05305608A JP 6565792 A JP6565792 A JP 6565792A JP 6565792 A JP6565792 A JP 6565792A JP H05305608 A JPH05305608 A JP H05305608A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- liquid water
- ketene dimer
- repellent substance
- oil
- 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
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はコンクリート表面に発生
する気泡低減に優れた表面美観改善型のコンクリート用
型枠剥離剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface aesthetic improving mold remover for concrete which is excellent in reducing bubbles generated on the surface of concrete.
【0002】[0002]
【従来の技術】従来、コンクリート用型枠剥離剤は鉱物
油や動植物油を主成分としたもので油性タイプと水性タ
イプの2種類がある。一般に表面気泡の低減に効果のあ
る剥離剤は後者の水性タイプであることはよく知られて
いる。2. Description of the Related Art Conventionally, mold release agents for concrete are mainly composed of mineral oil or animal and vegetable oil, and there are two types, an oily type and an aqueous type. It is well known that the release agent effective for reducing surface bubbles is generally the latter aqueous type.
【0003】[0003]
【発明が解決しようとする課題】水性タイプの剥離剤は
水で希釈して乳化或いは既に乳化状態にしたものでこれ
らの乳化安定性を良くするために水との親和性(親水
性)を高めている。しかし、高い親和性は打設時のコン
クリートになじみやすくなり、接触角が大きくなるとい
う欠点を持つ。従って、コンクリートの離型性の低下を
招き、剥離が困難になると共に型枠へのコンクリートの
付着が問題となっている。Aqueous-type release agents are those which have been diluted with water to be emulsified or already emulsified. To improve the emulsion stability of these, the affinity for water (hydrophilicity) is increased. ing. However, the high affinity makes it easier to adapt to the concrete when it is placed, and has the disadvantage of increasing the contact angle. Therefore, the mold releasability of the concrete is deteriorated, the peeling becomes difficult, and the adhesion of the concrete to the form becomes a problem.
【0004】[0004]
【課題を解決するための手段】本発明者らは上記問題点
に鑑み、コンクリート表面に発生する気泡の低減と、離
型性に優れた水希釈型の剥離剤を得るために鋭意研究し
た結果、撥水性の強い特定のアルキルケテンダイマーを
油成分に可溶化させることで離型皮膜が強固となり、従
来の水性剥離剤の欠点が改善され、しかもコンクリート
表面に発生する気泡の低減が顕著であることを見いだ
し、本発明を完成するに至った。SUMMARY OF THE INVENTION In view of the above problems, the present inventors have earnestly studied in order to reduce air bubbles generated on the surface of concrete and to obtain a water-dilutable release agent excellent in releasability. , The specific water-repellent alkyl ketene dimer is solubilized in the oil component to strengthen the release film, improving the drawbacks of conventional water-based release agents, and significantly reducing the bubbles generated on the concrete surface. As a result, they have completed the present invention.
【0005】すなわち本発明は、液状撥水性物質に下記
一般式で示されるアルキルケテンダイマー及び非イオン
性界面活性剤を配合してなることを特徴とするコンクリ
ート用型枠剥離剤を提供するものである。That is, the present invention provides a mold releasing agent for concrete, which is characterized in that a liquid water-repellent substance is mixed with an alkyl ketene dimer represented by the following general formula and a nonionic surfactant. is there.
【0006】[0006]
【化2】 [Chemical 2]
【0007】〔式中、R は炭素数12〜22の直鎖又は分岐
鎖のアルキル基を示す。〕本発明の基油となる液状撥水
性物質とは鉱物油或いは動植物油、油脂、脂肪酸、シリ
コン油、パラフィン油等であり、限定されるものではな
い。[In the formula, R represents a linear or branched alkyl group having 12 to 22 carbon atoms. The liquid water-repellent substance used as the base oil of the present invention is mineral oil or animal / vegetable oil, oil / fat, fatty acid, silicone oil, paraffin oil, etc., and is not limited.
【0008】前記一般式で示されるアルキルケテンダイ
マーは、脂肪酸クロライドとトリエチルアミンの反応で
得られるもので、R で示す脂肪酸のアルキル基の炭素数
は12〜22で、脂肪酸クロライドの一例を挙げれば、ラウ
リン酸クロライド、ミリスチン酸クロライド、パルミチ
ン酸クロライド、ステアリン酸クロライド、ベヘニン酸
クロライド等が挙げられる。かかるアルキルケテンダイ
マーは、液状撥水性物質に対して3〜10重量%配合する
場合にコンクリートの離型性に優れる。アルキルケテン
ダイマーの配合量が3重量%未満では充分な効果が見ら
れず、また10重量%を越える配合はアルキルケテンダイ
マーを可溶化状態にすることができない。The alkyl ketene dimer represented by the above general formula is obtained by the reaction of a fatty acid chloride and triethylamine. The alkyl group of the fatty acid represented by R has 12 to 22 carbon atoms. An example of the fatty acid chloride is: Examples thereof include lauric acid chloride, myristic acid chloride, palmitic acid chloride, stearic acid chloride and behenic acid chloride. Such an alkyl ketene dimer is excellent in mold releasability of concrete when blended in an amount of 3 to 10% by weight with respect to the liquid water-repellent substance. If the amount of the alkyl ketene dimer is less than 3% by weight, no sufficient effect can be seen, and if it exceeds 10% by weight, the alkyl ketene dimer cannot be solubilized.
【0009】本発明に使用する非イオン性界面活性剤
は、液状撥水性物質とアルキルケテンダイマーを可溶化
状態にして、更に使用時に数倍の水で希釈した時に乳化
するためのものであり、非イオン性界面活性剤の構造は
特に限定するものではない。非イオン性界面活性剤の一
例を挙げれば、ポリオキシエチレンアルキルエーテル、
ポリオキシエチレンアルキルフェニルエーテル、ソルビ
タン脂肪酸エステル、脂肪酸モノグリセライド、ポリエ
チレングリコール脂肪酸エステル等で、これらの単独使
用、又は2種以上の併用が可能である。また、本発明で
は非イオン性界面活性剤のHLB値が8〜12の範囲にあ
るものが良好な可溶化状態と水希釈時の乳化状態が得ら
れ、好ましく使用できる。このような非イオン性界面活
性剤の一例を挙げれば、ポリオキシエチレンラウリルエ
ーテル(エチレンオキサイド(以下、EOと略記する)付
加モル数6モル、HLB10.5 )、ポリオキシエチレン
ノニルフェニルエーテル(EO付加モル数8モル、HLB
10.5 )、ソルビタンモノラウレート(HLB 8.6)、
ポリオキシエチレンソルビタンモノラウレート(EO付加
モル数3モル、HLB 9.6)、ポリオキシエチレンソル
ビタントリオレート(EO付加モル数6モル、HLB 11.
0 )等が挙げられる。非イオン性界面活性剤の添加量は
液状撥水性物質に対して3〜8重量%程度であるが、可
溶化状態と乳化状態が得られる範囲であればよく、限定
されない。The nonionic surfactant used in the present invention is for solubilizing the liquid water-repellent substance and the alkyl ketene dimer and further emulsifying when diluted with several times of water at the time of use, The structure of the nonionic surfactant is not particularly limited. As an example of the nonionic surfactant, polyoxyethylene alkyl ether,
Polyoxyethylene alkyl phenyl ether, sorbitan fatty acid ester, fatty acid monoglyceride, polyethylene glycol fatty acid ester and the like can be used alone or in combination of two or more kinds. Further, in the present invention, a nonionic surfactant having an HLB value in the range of 8 to 12 can obtain a good solubilized state and an emulsified state when diluted with water and can be preferably used. Examples of such nonionic surfactants are polyoxyethylene lauryl ether (ethylene oxide (hereinafter abbreviated as EO) addition mole number 6 moles, HLB10.5), polyoxyethylene nonylphenyl ether (EO Addition mole number 8 moles, HLB
10.5), sorbitan monolaurate (HLB 8.6),
Polyoxyethylene sorbitan monolaurate (3 moles of EO addition, HLB 9.6), polyoxyethylene sorbitan trioleate (6 moles of EO addition, HLB 11.
0) and the like. The addition amount of the nonionic surfactant is about 3 to 8% by weight with respect to the liquid water-repellent substance, but it is not limited as long as it is in the range where a solubilized state and an emulsified state can be obtained.
【0010】本発明のコンクリート用型枠剥離剤は、水
で3〜20倍に希釈して使用するものであるが、原液使用
も可能である。The mold remover for concrete of the present invention is used by diluting it with water 3 to 20 times, but it is also possible to use an undiluted solution.
【0011】本発明のコンクリート用型枠剥離剤の型枠
への塗布方法はモップ塗りやスプレーによる塗布方法等
いずれの方法も可能であり、限定されない。また、型枠
の材質も限定されない。The method of applying the mold releasing agent for concrete of the present invention to the mold is not limited, and any method such as mopping or spraying can be used. Also, the material of the mold is not limited.
【0012】本発明のコンクリート用型枠剥離剤を使用
するコンクリートは、土木、建築、二次製品等に限定す
るものではなく、型枠を使用するコンクリートが対象と
なる。コンクリートの種類についても同様で、ゼロスラ
ンプの超硬練りコンクリートから高流動コンクリート、
例えば無振動コンクリート等に使用することができる。
従って、コンクリートの配合条件や材料についても限定
するものではなく、各種の混和材(剤)、例えばフライ
アッシュ、スラグ、シリカヒューム、高性能減水剤、A
E剤、水溶性高分子等を含むコンクリートに使用するこ
とができる。The concrete using the mold remover for concrete of the present invention is not limited to civil engineering, construction, secondary products, etc., but concrete using a mold is targeted. The same applies to types of concrete, from zero-slump cemented concrete to high-fluidity concrete,
For example, it can be used for vibration-free concrete or the like.
Therefore, the mixing conditions and materials of concrete are not limited, and various admixtures (agents) such as fly ash, slag, silica fume, high-performance water reducing agent, A
It can be used for concrete containing E agent, water-soluble polymer and the like.
【0013】[0013]
【実施例】以下、本発明を実施例により説明するが、本
発明はこれらの実施例に限定されるものではない。EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.
【0014】表1又は表2に示す剥離剤を、縦10cm×横
10cm×高さ20cmの鉄製型枠に塗布してコンクリートを打
設する。打設時に3000vpm テーブル型バイブレーターに
て20秒間振動充填する。打設2日後、脱型してコンクリ
ートの表面状態と型枠状態を観察した。用いたコンクリ
ートの材料、配合及び物性、並びに各評価方法を以下に
示す。 (1) コンクリート材料、配合及び物性 材料 セメント(C):普通ポルトランドセメント 比重=3.16 砂(S):紀の川産 比重=2.56 砂利(G):宝塚産砕石 比重=2.60 水(W):水道水 混和剤:マイティ150 (登録商標、花王 (株) 製) 配合 W/C×100 :40% S/(S+G)×100 :40% C:400 kg/m3 混和剤:C×1.2 % 物性 スランプ値:10cm(JIS-A-1101法) (2) 表面状態(気泡)の測定 10cm×20cmの 200cm2 中の1mm以上の気泡の個数を測定
した。 (3) 剥離性(型枠の汚れ)の観察 脱型型枠面へのコンクリートの付着状態を観察した。 判定基準 ××…型枠全面に厚く付着 ×…部分的に厚く付着 △…型枠全面に薄く付着 ○…部分的に薄く付着 ◎…付着なしThe stripping agent shown in Table 1 or Table 2 was applied to the vertical 10 cm × horizontal direction.
Apply it to an iron mold of 10 cm x 20 cm in height and pour concrete. At the time of placing, it is vibrated and filled with a 3000vpm table type vibrator for 20 seconds. Two days after the casting, the mold was removed and the surface condition of the concrete and the mold condition were observed. The material, composition and physical properties of the concrete used, and each evaluation method are shown below. (1) concrete material, formulation and physical property materials Cement (C): ordinary Portland cement specific gravity = 3.16 Sand (S): Kinokawa producing specific gravity = 2.56 gravel (G): Takarazuka producing crushed stone specific gravity = 2.60 Water (W): Water water admixture: Mighty 150 (registered trademark, manufactured by Kao Corp.) formulation W / C × 100: 40% S / (S + G) × 100: 40% C: 400 kg / m 3 admixture: C × 1.2% properties Slump value: 10 cm (JIS-A-1101 method) (2) Measurement of surface state (air bubbles) The number of air bubbles of 1 mm or more in 200 cm 2 of 10 cm × 20 cm was measured. (3) Observation of releasability (dirt of mold) The state of adhesion of concrete to the surface of the demolded mold was observed. Judgment criteria XX: Thickly attached to the entire surface of the mold X: Partially thickly attached △: Thinly attached to the entire surface of the form ◯: Partially thinly attached ◎: No attachment
【0015】[0015]
【表1】 [Table 1]
【0016】[0016]
【表2】 [Table 2]
【0017】[0017]
【表3】 [Table 3]
【0018】[0018]
【発明の効果】実施例から明らかなように、本発明のコ
ンクリート用型枠剥離剤は表面気泡低減による美観性と
剥離性に優れた効果を示す。従って、表面補修や型枠掃
除に要する工数の省力化が可能となり、品質の向上も期
待される。As is apparent from the examples, the mold release agent for concrete of the present invention exhibits excellent aesthetics and releasability by reducing surface bubbles. Therefore, the labor required for surface repair and form cleaning can be saved, and quality improvement is expected.
Claims (3)
アルキルケテンダイマー及び非イオン性界面活性剤を配
合してなることを特徴とするコンクリート用型枠剥離
剤。 【化1】 〔式中、R は炭素数12〜22の直鎖又は分岐鎖のアルキル
基を示す。〕1. A mold releasing agent for concrete, comprising a liquid water-repellent substance and an alkylketene dimer represented by the following general formula and a nonionic surfactant. [Chemical 1] [In the formula, R represents a linear or branched alkyl group having 12 to 22 carbon atoms. ]
示されるアルキルケテンダイマーを3〜10重量%配合す
ることを特徴とする請求項1記載のコンクリート用型枠
剥離剤。2. The mold releasing agent for concrete according to claim 1, wherein the alkyl ketene dimer represented by the above general formula is blended in an amount of 3 to 10% by weight with respect to the liquid water-repellent substance.
12の範囲である請求項1又は2記載のコンクリート用型
枠剥離剤。3. The HLB value of the nonionic surfactant is from 8 to.
The mold release agent for concrete according to claim 1 or 2, which has a range of 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4065657A JP3007470B2 (en) | 1992-03-24 | 1992-03-24 | Mold release agent for concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4065657A JP3007470B2 (en) | 1992-03-24 | 1992-03-24 | Mold release agent for concrete |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05305608A true JPH05305608A (en) | 1993-11-19 |
JP3007470B2 JP3007470B2 (en) | 2000-02-07 |
Family
ID=13293298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4065657A Expired - Fee Related JP3007470B2 (en) | 1992-03-24 | 1992-03-24 | Mold release agent for concrete |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3007470B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996023638A1 (en) * | 1995-01-30 | 1996-08-08 | Henkel Kommanditgesellschaft Auf Aktien | Process for preparing liquid alcohol-containing oil-in-water emulsions |
JP2007070524A (en) * | 2005-09-08 | 2007-03-22 | E I Du Pont De Nemours & Co | Aqueous emulsion containing fluorocarbon silane and coated article showing water drop fallin down property and water- and oil-repellent property |
WO2016062866A1 (en) | 2014-10-23 | 2016-04-28 | Basf Se | A process for hydrophobization of concrete |
US10131580B2 (en) | 2014-10-23 | 2018-11-20 | Basf Se | Method for producing a prefabricated building material |
CN109082336A (en) * | 2018-09-21 | 2018-12-25 | 湖南中岩建材科技有限公司 | Concrete parting agent and preparation method thereof |
JP2019025660A (en) * | 2017-07-25 | 2019-02-21 | マウント工業株式会社 | Release agent stock solution, concrete release agent using this, manufacturing method of release agent stock solution and manufacturing method of concrete release agent |
-
1992
- 1992-03-24 JP JP4065657A patent/JP3007470B2/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996023638A1 (en) * | 1995-01-30 | 1996-08-08 | Henkel Kommanditgesellschaft Auf Aktien | Process for preparing liquid alcohol-containing oil-in-water emulsions |
JP2007070524A (en) * | 2005-09-08 | 2007-03-22 | E I Du Pont De Nemours & Co | Aqueous emulsion containing fluorocarbon silane and coated article showing water drop fallin down property and water- and oil-repellent property |
WO2016062866A1 (en) | 2014-10-23 | 2016-04-28 | Basf Se | A process for hydrophobization of concrete |
US10131580B2 (en) | 2014-10-23 | 2018-11-20 | Basf Se | Method for producing a prefabricated building material |
US10144671B2 (en) | 2014-10-23 | 2018-12-04 | Basf Se | Process for hydrophobization of concrete |
RU2713003C2 (en) * | 2014-10-23 | 2020-02-03 | Басф Се | Method of concrete hydrophobisation |
JP2019025660A (en) * | 2017-07-25 | 2019-02-21 | マウント工業株式会社 | Release agent stock solution, concrete release agent using this, manufacturing method of release agent stock solution and manufacturing method of concrete release agent |
CN109082336A (en) * | 2018-09-21 | 2018-12-25 | 湖南中岩建材科技有限公司 | Concrete parting agent and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP3007470B2 (en) | 2000-02-07 |
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