JPS59137355A - Cement product whitening prevention - Google Patents
Cement product whitening preventionInfo
- Publication number
- JPS59137355A JPS59137355A JP935683A JP935683A JPS59137355A JP S59137355 A JPS59137355 A JP S59137355A JP 935683 A JP935683 A JP 935683A JP 935683 A JP935683 A JP 935683A JP S59137355 A JPS59137355 A JP S59137355A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- efflorescence
- organic substance
- cement product
- products
- 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
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 本発明はセメント製品の白華防止方法に関する。[Detailed description of the invention] The present invention relates to a method for preventing efflorescence in cement products.
従来、セメント製品の白華を防止することはほとんど不
可能に近かった。該白華はセメント硬化体中の可溶成分
が硬化体表面の乾燥に伴って水分が蒸発するさいに、硬
化体の表面に析出することにより生じる。そのため従来
の解決法としては減水剤と併用して混練水を減じたり、
セメント粒子より細かい不活性物質を添加し、毛細管を
充てんしたり、その他油脂、合成樹脂を添加する方法が
考えられてきたが、多少白華を減少させる効果はあった
にしても完全に防止できる方法は見出されていなかった
。In the past, it has been nearly impossible to prevent efflorescence in cement products. The efflorescence occurs when soluble components in the hardened cement precipitate on the surface of the hardened cement when water evaporates as the surface dries. Therefore, conventional solutions include reducing the amount of kneading water by using a water reducing agent,
Methods of adding inert substances finer than cement particles to fill the capillary tubes, or adding other oils, fats, and synthetic resins have been considered, but although they have the effect of reducing efflorescence to some extent, they cannot be completely prevented. No method had been found.
本発明者らは従来の白華防止剤とは全く異なる廟機物質
を原料段階で添加するか、あるいはセメント製品表面に
該有機物質を含浸させることにより、極めて白華しやす
い条件下においても白華を生じない方法を見出し、本発
明を完成した。The present inventors have added an organic material that is completely different from conventional efflorescence inhibitors at the raw material stage, or impregnated the surface of cement products with the organic substance, thereby preventing efflorescence even under conditions that are extremely prone to efflorescence. They discovered a method that does not cause blooms and completed the present invention.
すなわち、その要旨とするところは、化学式ＲＯそＡｏ
−１−ｎｎで表わされる有機物質をセメント製品に含有
させることにより、白華の発生を防止する方法にある。In other words, the gist is that the chemical formula ROsoAo
A method of preventing the occurrence of efflorescence by incorporating an organic substance represented by -1-nn into a cement product.
本発明に使用される化学式ＲＯ（ＡＯ’）−ｎＨにおい
て、式中Ｒは炭素数１〜７のアルキル基寸たは炭素数５
〜乙のシクロアルキル基、Ａは炭素数２〜３の１種また
は２種のアルキレン基、Ｈは１〜１０の数である。化学
式ＲＯ＋ＡＯ迩。■１で示される具体的な有機物質のい
くつかの例としては、ＣＨ３０（−Ｃ２Ｈ４０−）−、
Ｈ，ＣＨ３０＋Ｃ３Ｈ６０う−ｉ Ｈ，ｎ−Ｃ４Ｈ９”
：Ｃ２Ｈ４”＞ ３ Ｈｓｉ−Ｃ５Ｈ７０＋Ｃ２Ｈ４０
÷４Ｈ１σ）−０℃Ｃ２，Ｈ＋Ｏ）、ＨｌＣ２Ｈ５０＋
Ｃ２Ｈ４０＋Ｔ（ＴＣ３丁（６０’＞４Ｈ，ｎ −Ｃｓ
Ｉｈ １Ｏ（ｒｃ２Ｌ＋ｏ−）２Ｈ１】−Ｃ７Ｈ１５０
÷Ｃ’２Ｈ４０ヂ、Ｈなどがあげられる。もちろん本発
明で使用される有機物質はこれらの化合物に限定される
ものではガい。In the chemical formula RO(AO')-nH used in the present invention, R is an alkyl group having 1 to 7 carbon atoms or 5 carbon atoms.
~ B cycloalkyl group, A is one or two types of alkylene group having 2 to 3 carbon atoms, and H is a number of 1 to 10. Chemical formula RO+AO. ■ Some examples of specific organic substances shown in 1 are CH30(-C2H40-)-,
H,CH30+C3H60u-i H,n-C4H9”
:C2H4”> 3 Hsi-C5H70+C2H40
÷4H1σ) -0℃C2, H+O), HlC2H50+
C2H40+T (3 TCs (60'>4H, n -Cs
Ih 1O(rc2L+o-)2H1]-C7H150
Examples include ÷C'2H40ji, H, etc. Of course, the organic substances used in the present invention are not limited to these compounds.
」二記有機物質は単一化合物または数種の化合物の混合
物、あるいはそれらに適宜に水を加えて用いられる。The organic substance mentioned above can be used as a single compound or a mixture of several kinds of compounds, or by appropriately adding water to them.
上記有機物質を用いて処理されるセメント製品とは通常
知られているセメント構造体およびセメント二次製品、
さらには後述するように本発明によって処理されたセメ
ント製品をも含むものである。ここで使用されるセメン
トはポルトランドセメント、混合セメント、白色セメン
ト等が示される。Cement products treated using the above-mentioned organic substances include commonly known cement structures and secondary cement products;
It also includes cement products treated according to the present invention, as described below. The cements used here include Portland cement, mixed cement, and white cement.
次に上記有機物質を用いて添加外たは含浸させる方法に
ついて説明する。Next, a method of adding or impregnating the organic substance using the above-mentioned organic substance will be explained.
第１の方法は上記有機物質をセメント製品の原料を混練
するさいに、セメントに対し０．５％以」二（外割）添
加し、セメント製品全体に均質に上記有機物質を分散さ
せる方法である。The first method is to add 0.5% or more of the organic substance to the cement when kneading the raw materials for the cement product, and disperse the organic substance homogeneously throughout the cement product. be.
第２の方法はセメントの凝結（始発）時間り、降のでき
るたけ早い時期に、セメント製品を上記有機物質に浸漬
するか、刷毛等で表面に塗布するか、または表面に噴霧
して表面に含浸させる方法である。The second method is to soak the cement product in the above organic substance, apply it to the surface with a brush, etc., or spray it on the surface as soon as possible after the cement has set (initial setting) time. This is a method of impregnation.
丑だ第１の方法および第２の方法を併せて行なえはさら
に一段とその効果は大きい。The effect is even greater if the first method and the second method are used in combination.
第１の方法、第２の方法あるいは第１の方法と第２の方
法の併用でほとんど白華の防止はできるが、特に白華の
発生しやすい条件下で時間が経過する等して、わずかに
白華が発生したような場合には第２の方法を繰り返すこ
とにより白華をそれ以上進行させなくする効果がある。Although efflorescence can be mostly prevented by using the first method, the second method, or a combination of the first method and the second method, it is possible to prevent efflorescence to a small extent as time passes under conditions where efflorescence is particularly likely to occur. If efflorescence occurs, repeating the second method has the effect of preventing the efflorescence from progressing any further.
以上、本発明を実施することによって、セメント製品、
たとえば化粧コンクリートや打放しコンクリート等の表
面、タイルやブロック類の目地等々から析出する白華を
完全に防止することが可能であり、顕著な効果を有して
いる。As described above, by carrying out the present invention, cement products,
For example, it is possible to completely prevent efflorescence from precipitating on the surfaces of decorative concrete, exposed concrete, etc., the joints of tiles and blocks, etc., and has a remarkable effect.
以下、実施例によって本発明を説明する。The present invention will be explained below with reference to Examples.
実施例
普通ポルトランドセメント１部、砂６部、水０．７５部
の配合割合で、さらに有機物質Ｃ４ＨｑＯ＋Ｃ３Ｈ６０
示Ｃ２Ｈ４０÷３Ｈをセメントに対し１０％添加したも
のと添加しないものそれぞれについてＩ ＱＸ １０Ｘ
４ Ｑａｎのセメントモルタル角柱体を成型し、２４時
間湿空養生（２０℃、Ｒ）１９０％）したのち脱型した
。Example: 1 part of ordinary Portland cement, 6 parts of sand, 0.75 parts of water, and an organic substance C4HqO + C3H60
I QX 10X for cement with and without addition of 10% C2H40÷3H
A cement mortar prismatic body of 4 Qan was molded and removed from the mold after being cured in humid air for 24 hours (20° C., R: 190%).
これらのモルタル角柱体を長手方向に’ｌＬＭ巾で切断
し、１１０Ｘ１０Ｘ２の供試体をそれぞれ作成した、
得た供試体は厚み方向１傭を７℃の水中にθ濱し、その
全体は７℃、ＲＨ５０チ、風速０．２〜０．３ｍ／ｓｅ
ｃの環境容器中に放置した。These mortar prismatic bodies were cut in the longitudinal direction to a width of 1 LM to create specimens of 110 x 10 x 2. The obtained specimens were immersed in water at 7°C for 1 minute in the thickness direction; RH50chi, wind speed 0.2-0.3m/se
It was left in the environmental container of c.
その結果、有機物質を添加した供試体には白華が４力月
後に多少認められたが、添加しなかった供試体には５日
後に一面に白華が生じていた。As a result, some efflorescence was observed on the specimens to which the organic substance had been added after 4 months, but efflorescence had formed all over the specimens to which no organic substance had been added after 5 days.
一方、」二記方法で得た残りの角柱体を長手方向に２
ｃｍ巾で切断し、１０ＸＩ ０Ｘ２ｃｒｎの供試体を別
にそれぞれ作成ｌ−だ。On the other hand, the remaining prismatic body obtained by method 2 is
Separate specimens of 10XI and 0X2Crn were prepared by cutting them into cm widths.
これらの供試体について、前記に示す有機物質を刷毛で
塗布したのち、再び上記環境容器中に放置した。After applying the organic substance shown above with a brush to these specimens, they were again left in the environmental container.
その結果、」二記有機物個を添加していない供試体は４
力月後に多少白華が認められたが、有機物質を添加した
供試体には全く白華か認められなかった。As a result, the test specimens to which the organic substances listed in 2 were not added were 4
Although some efflorescence was observed after heating, no efflorescence was observed at all in the specimens to which organic substances had been added.
特許出願人 日本セメント株式会社
代理人 弁理士 伊 東 彰
手続補正書（方式）
昭和５８年テ月１ｂ日
特許庁長酒若杉和夫 殿
１事件の表示
昭和５８年特許願第９３５６号
２、発明の名称
七メント製品の白華防止方法
６、補正をする者
事件との関係 特許出願人
住所 東京都千代田区大手町１丁目６番１号昭和５８年
４月６１］
（発送日 昭和５８年４月２６０）
６補正の対象 願１″及び明細書（タイプ浄１）７補正
の内容 別紙のとおり
２８１Patent Applicant: Nippon Cement Co., Ltd. Agent, Patent Attorney Akira Ito Procedural Amendment (Method) Date: January 1, 1980 Kazuo Sakawakasugi, Commissioner of the Japan Patent Office 1 Indication of Case 1 Patent Application No. 9356 2 of 1988, Invention Name 7 Method for preventing efflorescence of ment products 6, Relationship with the case of the person making the amendment Patent applicant address 1-6-1 Otemachi, Chiyoda-ku, Tokyo April 61, 1982] (Shipping date April 1982) 260) Subject of 6 amendments Application 1″ and specification (type 1) Contents of 7 amendments As shown in the attached sheet 281
Claims (4)
セメント製品に含有させることを特徴とするセメント製
品の白華防止方法。(1) A method for preventing efflorescence in cement products, which comprises incorporating an organic substance represented by the chemical formula RO+AO+nH into the cement products.
することを特徴とする特許請求の範囲第１項記載のセメ
ント製品の白華防止方法。(2) The method for preventing efflorescence in cement products according to claim 1, which comprises adding the organic substance to raw materials for cement products and kneading them.
させることを特徴とする特許請求の範囲第１項記載のセ
メント製品の白華防Ｊ１一方法。(3) A method for preventing efflorescence of a cement product according to claim 1, which comprises impregnating the surface of the cement product after hardening with the organic substance.
し、かつ硬化後のセメント製品の表面に含浸させること
を特徴とする特許請求の範囲第１争記載のセメント製品
の白華防止方法。(4) A method for preventing efflorescence of a cement product as set forth in claim 1, which comprises adding the organic substance to the raw material of the cement product, kneading it, and impregnating the surface of the cement product after hardening. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP935683A JPS59137355A (en) | 1983-01-25 | 1983-01-25 | Cement product whitening prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP935683A JPS59137355A (en) | 1983-01-25 | 1983-01-25 | Cement product whitening prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59137355A true JPS59137355A (en) | 1984-08-07 |
Family
ID=11718181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP935683A Pending JPS59137355A (en) | 1983-01-25 | 1983-01-25 | Cement product whitening prevention |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59137355A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362323A (en) * | 1992-02-14 | 1994-11-08 | W. R. Grace & Co. Conn. | Cement admixture composition |
| US5938835A (en) * | 1993-09-14 | 1999-08-17 | W. R. Grace & Co.-Conn. | Cement composition |
| JP2021020824A (en) * | 2019-07-26 | 2021-02-18 | 太平洋セメント株式会社 | Efflorescence inhibitor, and method for preventing efflorescence of cement hardened body |
-
1983
- 1983-01-25 JP JP935683A patent/JPS59137355A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362323A (en) * | 1992-02-14 | 1994-11-08 | W. R. Grace & Co. Conn. | Cement admixture composition |
| US5938835A (en) * | 1993-09-14 | 1999-08-17 | W. R. Grace & Co.-Conn. | Cement composition |
| JP2021020824A (en) * | 2019-07-26 | 2021-02-18 | 太平洋セメント株式会社 | Efflorescence inhibitor, and method for preventing efflorescence of cement hardened body |
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