JPH0550411A - Surface finishing method for cement product - Google Patents

Surface finishing method for cement product

Info

Publication number
JPH0550411A
JPH0550411A JP20793491A JP20793491A JPH0550411A JP H0550411 A JPH0550411 A JP H0550411A JP 20793491 A JP20793491 A JP 20793491A JP 20793491 A JP20793491 A JP 20793491A JP H0550411 A JPH0550411 A JP H0550411A
Authority
JP
Japan
Prior art keywords
super
retardant
retarder
mixture
white pigment
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
Application number
JP20793491A
Other languages
Japanese (ja)
Inventor
Masashi Kobayashi
昌史 小林
Noriyuki Fukushima
典行 福島
Masahiro Shimizu
正弘 清水
Tsutomu Kubozono
勉 窪園
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
MMK Corp
Original Assignee
Mitsubishi Materials Corp
MMK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp, MMK Corp filed Critical Mitsubishi Materials Corp
Priority to JP20793491A priority Critical patent/JPH0550411A/en
Publication of JPH0550411A publication Critical patent/JPH0550411A/en
Pending legal-status Critical Current

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  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

PURPOSE:To attach super retardant to the surface of a form under conditions of good workability in a method wherein mortar or cement is placed in a form to the surface of which super retardant has been attached and thereafter the mortar or cement is cured and removed and cement paste is washed off the surface of the cement product thus obtained having been in contact with the form for finishing said surface. CONSTITUTION:A mixture of super retardant, tackifier; filler, and white pigment is attached to the surface of a form. Since the super retardant is mixed with the tackifier, filler, and white pigment, said retardant can be easily and uniformly applied to the surface of the form, so that a good washed surface free from unevenness can be obtained. By the use of white pigment, the mixture containing super retardant can assume white tone and hence attachment of the mixture to the surface of the form of black color can be confirmed at a glance, so that omission of coating, double coating, and uneven coating is avoided with the result that the mixture containing super retardant can be attached to the surface of the form easily and surely under conditions of good workability.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はセメント製品の表面仕上
げ方法に関し、特に養生、脱型して得られたセメント製
品の表面を、良好な作業効率で洗い出し仕上げするセメ
ント製品の表面仕上げ方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for finishing the surface of a cement product, and more particularly to a method for finishing the surface of a cement product obtained by curing and demolding with a good work efficiency.

【0002】[0002]

【従来の技術及び先行技術】従来、モルタル或いはコン
クリート表面の化粧仕上げ方法の1つに洗い出し仕上げ
がある。これはモルタル或いはコンクリート表面からセ
メントペースト部分を洗い出して骨材を露出させる方法
であり、具体的には型枠面に予め凝結遅延剤を塗った
後、モルタル又はコンクリートを打設し、所定の養生後
脱型し、凝結遅延剤により凝結が遅延された表面に高圧
水を噴射するか又はブラシ等で洗浄して未凝結のセメン
トペースト部分を除去するものである。
2. Description of the Related Art Conventionally, wash-out is one of the methods for finishing the surface of mortar or concrete. This is a method to wash out the cement paste part from the surface of the mortar or concrete to expose the aggregate.Specifically, after applying the set retarder to the formwork surface beforehand, the mortar or concrete is placed and the prescribed curing is performed. After demolding, the surface of which the setting is delayed by the setting retarder is sprayed with high-pressure water or washed with a brush or the like to remove the uncondensed cement paste portion.

【0003】しかしながら、この方法では凝結遅延剤の
遅延効果が不十分であるため、高温常圧養生(以下、
「蒸気養生」と称する。)或いは高温高圧養生(以下
「オートクレーブ養生」と称する。)等の硬化促進養生
を施す場合には、凝結遅延剤の塗布量が著しく多くなり
不経済である。また、凝結遅延剤の塗りムラが生じ易
く、このため洗い出し面にもムラが出るなどの問題があ
る。
However, in this method, since the retarding effect of the setting retarder is insufficient, high temperature and pressure curing (hereinafter,
It is called "steam curing". ) Or curing hardening curing such as high temperature high pressure curing (hereinafter referred to as "autoclave curing"), the amount of the set retarder applied is significantly increased, which is uneconomical. Further, there is a problem that coating unevenness of the setting retarder is likely to occur, which causes unevenness on the washed surface.

【0004】このため、通常はコンクリート打設後、硬
化促進養生を行わず、気中養生を行い、母体のコンクリ
ートが脱型しても欠損を生じない程度の強度(脱型強
度)に達したのを見計らって脱型し、洗い出し作業を行
っているが、この方法では製品の製造効率が悪く、特に
強度発現の遅い寒冷期には脱型強度を得るのに多くの日
数を費やしてしまうため、製造日数が長くなるという問
題がある。
For this reason, normally, after the concrete is poured, the curing is not carried out in the accelerated curing, but in the air, so that the strength of the base concrete (demolding strength) does not occur even if the concrete is demolded. However, this method has poor product manufacturing efficiency, and it takes a lot of days to obtain demolding strength especially in the cold season when strength development is slow. However, there is a problem that the number of manufacturing days becomes long.

【0005】一方、特公平2−15519号には、余っ
た未使用のコンクリートが翌日以降も使用できるよう
に、このコンクリートに極めて長い時間凝結を遅延する
ことができる遅延剤(以下「超遅延剤」と称す。)を加
えて硬化を遅延し、使用時にこの超遅延剤の作用を打ち
消す作用のある促進剤を添加することが開示されてい
る。ここで使用される超遅延剤は、セメントの水和反応
を一時的に停止させ、極めて長時間にわたり凝結を遅延
させた後、再び反応を開始できるような性質を有するも
のであり、従来の凝結遅延剤に比べて優れた遅延効果を
奏するものである。
On the other hand, Japanese Examined Patent Publication No. 15519/1990 discloses a retardant (hereinafter referred to as "super retarder") capable of delaying the setting of an extra unused concrete for a very long time so that it can be used the next day or later. It is disclosed that the accelerator is added to delay the curing and to cancel the action of the super retarder at the time of use. The ultra-retardant used here has the property of temporarily stopping the hydration reaction of cement, delaying the setting for an extremely long time, and then starting the reaction again. It has an excellent retarding effect as compared with the retarder.

【0006】従って、この超遅延剤を用いることによ
り、硬化促進養生を採用して、良好な製造効率のもとに
洗い出し仕上げを行なうことができるものと考えられ
る。
Therefore, it is considered that the use of this ultra-retardant makes it possible to adopt the curing-accelerating curing and to perform the wash-out finishing with good production efficiency.

【0007】しかしながら、超遅延剤は、流動性のある
液体で粘度が低いため、これを型枠面に塗布した場合、
型枠表面が遅延剤をはじいてしまい、必要量を十分に塗
布できないという欠点がある。
However, since the super retarder is a fluid liquid and has a low viscosity, when it is applied to the mold surface,
The surface of the mold is repelled by the retarder, so that the required amount cannot be applied sufficiently.

【0008】このような超遅延剤の欠点を解決し、超遅
延剤の型枠面への塗布を良好に行うことを可能にするこ
とにより、促進養生後の任意の時期において、洗い出し
を行うことができる方法として、超遅延剤を粘着付与材
及び増量材の混合物として型枠面に付着させる方法が先
に特許出願された(特願平2−290542号。以下
「先願」という。)。先願の方法によれば、所望量の超
遅延剤を型枠面に均一に付着させることが可能とされ
る。
By solving the drawbacks of the super retarder and enabling the super retarder to be applied well to the mold surface, washing out can be carried out at any time after accelerated curing. As a method capable of achieving this, a patent was previously filed for a method of adhering an ultra-retardant as a mixture of a tackifier and an extender to the surface of a mold (Japanese Patent Application No. 2-290542, hereinafter referred to as "prior application"). According to the method of the prior application, it is possible to uniformly attach a desired amount of the super retarder to the mold surface.

【0009】[0009]

【発明が解決しようとする課題】しかしながら、一般
に、型枠は黒色系統の色調を有し、また、先願で使用さ
れる超遅延剤含有混合物も黒色系統の色調を有すること
から、型枠面への超遅延剤含有混合物の塗布の有無を十
分に確認し得ないという欠点がある。このため、複数の
型枠を用いて製造を行なう現場においては、超遅延剤含
有混合物を塗布してある型枠面に超遅延剤含有混合物を
2度塗りしてしまったり、超遅延剤含有混合物を塗布し
ていない型枠にコンクリートを打設してしまうなど、作
業の行き違いにより、製品欠陥を発生するおそれがあ
る。また、超遅延剤含有混合物の塗布面と非塗布面(型
枠表出面)との見分けがつかないために、塗りムラが生
じ易いという問題もある。
However, in general, the mold has a black color tone, and the mixture containing the ultra-retardant used in the prior application also has a black color tone. There is a drawback in that it is not possible to sufficiently confirm whether or not the super retarder-containing mixture has been applied. For this reason, in a production site where a plurality of molds are used, the super retarder-containing mixture is applied twice to the mold surface to which the super retarder-containing mixture is applied, or the super retarder-containing mixture is applied. There is a possibility that product defects may occur due to improper work such as placing concrete on a mold that has not been coated with. There is also a problem that coating unevenness is likely to occur because the coated surface and the non-coated surface (former frame surface) of the mixture containing the super-retarder are indistinguishable.

【0010】本発明は上記先願の問題点を解決し、超遅
延剤含有混合物塗布面と非塗布面とを一目で見分けるこ
とができ、これにより良好な作業性のもとに、超遅延剤
含有混合物をムラなく、確実に型枠面に付着させること
ができるセメント製品の表面仕上げ方法を提供すること
を目的とする。
The present invention solves the above-mentioned problems of the prior application, and can distinguish the coated surface and the non-coated surface of the mixture containing the super-retarder at a glance, which allows the super-retarder to have good workability. An object of the present invention is to provide a surface finishing method for a cement product which can surely adhere the contained mixture to the surface of the mold evenly.

【0011】[0011]

【課題を解決するための手段】本発明のセメント製品の
表面仕上げ方法は型枠にモルタル又はコンクリートを打
設した後、養生及び脱型し、得られたセメント製品の型
枠当接面から表面のセメントペースト部分を洗い出し仕
上げするセメント製品の表面仕上げ方法であって、該型
枠面に、超遅延剤、粘着付与材、増量材及び白色系顔料
を含む混合物を付着させた後、モルタル又はコンクリー
トを打設することを特徴とする。
The surface finishing method for a cement product of the present invention is such that after mortar or concrete is placed in a mold, it is cured and demolded, and the surface of the obtained cement product is contacted with the mold contact surface. Is a surface finishing method of a cement product for washing and finishing the cement paste portion, wherein a mixture containing an ultra-retardant, a tackifier, a filler and a white pigment is adhered to the formwork surface, and then mortar or concrete It is characterized by placing.

【0012】以下に本発明を詳細に説明する。まず、本
発明で用いる超遅延剤含有混合物、即ち、超遅延剤、粘
着付与材、増量材及び白色系顔料を含む混合物について
説明する。
The present invention will be described in detail below. First, the mixture containing the super retarder used in the present invention, that is, the mixture containing the super retarder, the tackifier, the extender and the white pigment will be described.

【0013】本発明に好適な超遅延剤としては特公平2
−15519号に開示されるもの、即ちホスホン酸誘導
体、特にカルシウムキレート剤として作用することがで
き、ヒドロキシ及びアミノ基を含むホスホン酸誘導体等
が挙げられる。具体的に次のような化合物が挙げられ
る。
As a super retarder suitable for the present invention, Japanese Patent Publication No.
No. 15519, namely phosphonic acid derivatives, especially phosphonic acid derivatives which can act as a calcium chelating agent and which contain hydroxy and amino groups. Specific examples include the following compounds.

【0014】ホスホン酸タイプの超 遅延剤 アミノトリ(メチレンホスホン酸)、アミノトリ(メチ
レンホスホン酸)五ナトリウム塩、1−ヒドロキシエチ
リデン−1,1−ジホスホン酸、1−ヒドロキシエチリ
デン−1,1−ジホスホン酸四ナトリウム塩、エチレン
ジアミンテトラ(メチレンホスホン酸)、エチレンジア
ミンテトラ(メチレンホスホン酸)カルシウムナトリウ
ム塩、ヘキサメチレンジアミンテトラ(メチレンホスホ
ン酸)、ヘキサメチレンジアミンテトラ(メチレンホス
ホン酸)カリウム塩、ジエチレントリアミンペンタ(メ
チレンホスホン酸)、ジエチレントリアミンペンタ(メ
チレンホスホン酸)ナトリウム塩。
Phosphonic acid type super retarder aminotri (methylenephosphonic acid), aminotri (methylenephosphonic acid) pentasodium salt, 1-hydroxyethylidene-1,1-diphosphonic acid, 1-hydroxyethylidene-1,1-diphosphonic acid Tetrasodium salt, ethylenediaminetetra (methylenephosphonic acid), ethylenediaminetetra (methylenephosphonic acid) calcium sodium salt, hexamethylenediaminetetra (methylenephosphonic acid), hexamethylenediaminetetra (methylenephosphonic acid) potassium salt, diethylenetriaminepenta (methylenephosphonic acid) Acid), diethylenetriamine penta (methylenephosphonic acid) sodium salt.

【0015】非ホスホン酸タイプの 超遅延剤 ヒドロキシカルボン酸及びそれらの塩;クエン酸、グル
コン酸、酒石酸、フマル酸、イタコン酸、マロン酸及び
グルコヘプタノン酸等を含むポリカルボン酸及びそれら
の塩、例えば、ポリマレイン酸、ポリフマル酸、ポリア
クリル酸及びポリメタクリル酸、好ましくは低分子量ポ
リカルボン酸;酸化防止剤、例えばアスコルビン酸及び
イソアスコルビン酸;ポリマー、例えば、スルホン酸−
アクリル酸コポリマー、ポリヒドロキシシラン及びポリ
アクリルアミド、好ましくは低分子量ポリマー;炭水化
物、例えば、スクロース、コーンシロップ;リグノスル
ホネート、例えばリグノスルホン酸カルシウム等も使用
可能である。これらのうちでは、ヒドロキシカルボン
酸、ポリカルボン酸、イソアスコルビン酸、ポリヒドロ
キシシランが好適である。
Non-phosphonic acid type ultra-retardant hydroxycarboxylic acid and salts thereof; polycarboxylic acids including citric acid, gluconic acid, tartaric acid, fumaric acid, itaconic acid, malonic acid and glucoheptanonic acid and salts thereof. , For example polymaleic acid, polyfumaric acid, polyacrylic acid and polymethacrylic acid, preferably low molecular weight polycarboxylic acids; antioxidants such as ascorbic acid and isoascorbic acid; polymers such as sulphonic acid
Acrylic acid copolymers, polyhydroxysilanes and polyacrylamides, preferably low molecular weight polymers; carbohydrates such as sucrose, corn syrup; lignosulfonates such as calcium lignosulfonate and the like can also be used. Among these, hydroxycarboxylic acid, polycarboxylic acid, isoascorbic acid and polyhydroxysilane are preferable.

【0016】本発明においては、超遅延剤は、少なくと
も1種の前記ホスホン酸タイプの超遅延剤と、少なくと
も1種の異なるタイプ、即ち、非ホスホン酸タイプの超
遅延剤との混合物として用いるのが好ましい。非ホスホ
ン酸タイプの超遅延剤の多くは、減水特性をも有するの
で、これらは最終硬化セメント製品の圧縮強度を増加さ
せる作用をも有し、極めて有利である。
In the present invention, the ultra-retardant is used as a mixture of at least one of said phosphonic acid type ultra-retardant and at least one different type, ie of non-phosphonic acid type ultra-retarder. Is preferred. Since many of the non-phosphonic acid type super retarders also have water-reducing properties, they also have the effect of increasing the compressive strength of the final hardened cement product, which is highly advantageous.

【0017】本発明において、特に好ましい超遅延剤
は、前記ホスホン酸タイプの超遅延剤とクエン酸との混
合物、とりわけ、アミノトリ(メチレンホスホン酸)と
クエン酸との混合物である。この場合、ホスホン酸タイ
プの超遅延剤とクエン酸との混合比は、1:1〜2:1
(重量比)とするのが好ましい。
In the present invention, a particularly preferred super retarder is a mixture of the above-mentioned phosphonic acid type super retarder and citric acid, particularly a mixture of aminotri (methylenephosphonic acid) and citric acid. In this case, the mixing ratio of the phosphonic acid type super retarder and citric acid is 1: 1 to 2: 1.
(Weight ratio) is preferable.

【0018】一方、本発明において使用される粘着付与
剤としては、ゴムラテックスとしてスチレンブタジエン
ゴム(SBR)ラテックス、クロロプレンゴム(CR)
ラテックスなど、樹脂エマルジョンとしてエチレン酢酸
ビニル(EVA)エマルジョン、ポリアクリル酸エステ
ル(PAE)エマルジョンなど、再乳化型粉末樹脂とし
てEVA、酢酸ビニルビニルバーサテート(VAVeo
Va)、その他セルロース系のメチルセルロース、ヒド
ロキシエチルセルロース等やポリビニルアルコール(P
VA)、デンプン等が挙げられる。
On the other hand, examples of the tackifier used in the present invention include styrene-butadiene rubber (SBR) latex and chloroprene rubber (CR) as rubber latex.
Ethylene vinyl acetate (EVA) emulsion, polyacrylic ester (PAE) emulsion, etc. as resin emulsion such as latex, EVA as re-emulsifiable powder resin, vinyl acetate vinyl versatate (VAVeo)
Va), other cellulose-based methyl cellulose, hydroxyethyl cellulose, etc., and polyvinyl alcohol (P
VA), starch and the like.

【0019】また、増量材としては微粉体材料が好まし
く、例えば、微粉スラグ、フライアッシュ、炭酸カルシ
ウム、シリカヒューム(シリカの極微細粉末)等が好適
である。なお、炭酸カルシウムは白色ではあるが、隠蔽
力が小さく、本発明における白色系顔料の範疇には入ら
ない。
Further, as the extender, a fine powder material is preferable, and for example, fine powder slag, fly ash, calcium carbonate, silica fume (extra fine silica powder) and the like are preferable. Although calcium carbonate is white, it has a small hiding power and is not included in the category of white pigments in the present invention.

【0020】更に、白色系顔料としては、白色で隠蔽力
の大きいものであれば良く、特に制限はなく、酸化亜鉛
(ZnO)、酸化ジルコニウム(ZrO2)、酸化チタ
ン(TiO2 )、リトポン(ZnS+BaSO2 )など
が挙げられるが、これらのうち、特に酸化亜鉛は隠蔽力
が大きくかつ、超遅延剤との相乗効果により、凝結遅延
作用も高められるので好適である。
Further, the white pigment is not particularly limited as long as it is white and has a large hiding power, and is not particularly limited, and zinc oxide (ZnO), zirconium oxide (ZrO 2 ), titanium oxide (TiO 2 ), lithopone ( ZnS + BaSO 2 ), and the like. Of these, zinc oxide is particularly preferable because it has a large hiding power and a synergistic effect with the ultra-retardant enhances the coagulation retarding action.

【0021】なお、本発明において前記超遅延剤、粘着
付与材、増量材及び白色系顔料は、いずれも各々1種を
単独で用いても、2種以上を混合して用いてもよい。
In the present invention, each of the above-mentioned super retarder, tackifier, extender and white pigment may be used alone or in combination of two or more.

【0022】本発明において、超遅延剤、粘着付与材、
増量材及び白色系顔料の混合比は、混合液としての作業
性、付着性等から適宜決定される。一般には、(超遅延
剤):(粘着付与材):(増量材):(白色系顔料)=
(100):(2〜200):(10〜300):(5
〜100)(重量比)の範囲で、用いる粘着付与材、増
量材、白色系顔料の種類によって決定される。混合比の
一例は、後掲の実施例に示す通りであり、例えば粘着付
与材としてSBRラテックス、増量材としてシリカヒュ
ーム、白色系顔料としてZnOを用いる場合、その混合
比は(超遅延剤):(粘着付与材):(増量材):(白
色系顔料)=(100):(5〜50):(10〜10
0):(5〜100)の範囲が好ましい。
In the present invention, a super retarder, a tackifier,
The mixing ratio of the extender and the white pigment is appropriately determined depending on workability as a mixed solution, adhesion, and the like. Generally, (super retarder): (tackifier): (filler): (white pigment) =
(100): (2-200): (10-300): (5
To 100) (weight ratio), depending on the type of tackifier, filler and white pigment used. An example of the mixing ratio is as shown in the examples below. For example, when SBR latex is used as the tackifier, silica fume is used as the extender, and ZnO is used as the white pigment, the mixing ratio is (super retarder): (Tackifying material): (Extending material): (White pigment) = (100): (5 to 50): (10 to 10)
0): The range of (5 to 100) is preferable.

【0023】本発明に用いられる超遅延剤、粘着付与
材、増量材及び白色系顔料の混合物を型枠に付着させる
方法としては特に制限はなく、刷毛ローラー、ゴムへら
等を用いて塗布する方法又はスプレー等により散布する
方法等を採用することができる。しかして、この付着量
を調節することにより、得られる製品の洗い出し深さを
適当に調整することができる。通常の場合、混合物付着
量は30〜300g/m2 程度とするのが好ましい。
There is no particular limitation on the method of adhering the mixture of the super-retarder, tackifier, extender and white pigment used in the present invention to the mold, and the method of applying using a brush roller, a rubber spatula or the like. Alternatively, a method of spraying by spraying or the like can be adopted. Thus, by adjusting the amount of adhesion, the wash-out depth of the obtained product can be adjusted appropriately. Usually, it is preferable that the amount of adhering mixture is about 30 to 300 g / m 2 .

【0024】遅延剤、粘着付与材、増量材及び白色系顔
料の混合物を型枠面に付着させた後は、この混合物を乾
燥させた後、モルタル又はコンクリートを打ち込む。こ
こで、乾燥が十分でない場合には、洗い出し面にムラが
生じ易いため、十分に乾燥していることを確認した後、
モルタル又はコンクリートを打ち込む。
After the mixture of the retarder, the tackifier, the extender and the white pigment is applied to the surface of the mold, the mixture is dried and then mortar or concrete is poured. Here, if the drying is not sufficient, unevenness is likely to occur on the wash-out surface, so after confirming that it is sufficiently dried,
Drive in mortar or concrete.

【0025】モルタル又はコンクリートを打ち込んだ後
は、所要の養生を行う。本発明においては、凝結遅延効
果の高い超遅延剤を用いるため、蒸気養生、オートクレ
ーブ養生等の促進養生を行うことができるが、気中養生
でも良いことは言うまでもない。
After the mortar or concrete has been driven in, the required curing is carried out. In the present invention, since an ultra-retardant having a high setting retarding effect is used, accelerated curing such as steam curing and autoclave curing can be performed, but it goes without saying that air curing is also possible.

【0026】養生後は脱型し、適当な時期に高圧水又は
ブラシなどを用い、常法に従って洗い出しを行う。この
洗い出しは脱型後直ちに行う必要はなく、促進養生を行
った場合でも脱型後、数日経過した後に行うことができ
る。この洗い出し条件、即ち高圧水の圧力や洗い出し時
期等によっても、洗い出し深さを調節することができ
る。
After curing, the mold is demolded and, at an appropriate time, using high-pressure water, a brush or the like, washing is performed according to a conventional method. This washing out does not have to be performed immediately after demolding, and even when accelerated curing is performed, it can be performed several days after demolding. The wash-out depth can be adjusted by the wash-out condition, that is, the pressure of the high-pressure water, the wash-out time, and the like.

【0027】なお、本発明において型枠に打設するモル
タル又はコンクリート配合には特に制限はなく、従来一
般的に採用されているモルタル又はコンクリート配合で
良い。
There is no particular limitation on the mortar or concrete composition to be cast in the mold in the present invention, and the mortar or concrete composition which has been generally adopted conventionally may be used.

【0028】[0028]

【作用】本発明においては、凝結遅延剤として超遅延剤
を用いるため、その優れた凝結遅延効果により、促進養
生後においても、該超遅延剤を有する部分のモルタル又
はコンクリートは、任意の時期に、例えば作業員の手が
あいた時に洗い出しを行うことが可能である。
In the present invention, since the super retarder is used as the set retarder, the mortar or concrete of the portion having the super retarder can be used at any time even after accelerated curing due to its excellent set retarding effect. For example, it is possible to wash out when the hands of the worker are present.

【0029】しかも、超遅延剤のみでは、型枠面に均一
に付着させることが困難であるが、本発明においては超
遅延剤と粘着付与材、増量材及び白色系顔料とを混合し
て用いているため、型枠面に容易に均一付着させること
が可能となり、ムラのない良好な洗い出し面を得ること
ができる。さらに、増量材等により経済性も向上され
る。しかも、白色系顔料の配合により、超遅延剤含有混
合物の色調を白色系とすることができ、黒色系の型枠面
に対して付着の有無を一目で確認することができるた
め、塗り忘れ、2度塗り、塗りムラを生じることなく、
良好な作業性のもとに容易かつ確実に超遅延剤含有混合
物を型枠面に付着させることができる。
Moreover, it is difficult to uniformly adhere to the mold surface only with the super retarder, but in the present invention, the super retarder, the tackifier, the extender and the white pigment are mixed and used. Therefore, it is possible to easily and uniformly adhere to the surface of the mold, and it is possible to obtain a good wash-out surface without unevenness. Furthermore, the economical efficiency is improved by using the filler and the like. Moreover, by blending a white pigment, the color tone of the super retarder-containing mixture can be made white, and it is possible to confirm at a glance whether or not there is adhesion to the black mold surface, so forget to apply it. Double coating, without uneven coating,
The super retarder-containing mixture can be easily and surely adhered to the mold surface with good workability.

【0030】[0030]

【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明するが、本発明は、その要旨を超えない
限り、以下の実施例に限定されるものではない。
EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples unless it exceeds the gist.

【0031】実施例1〜6、比較例1,2 表1に示す配合にて超遅延剤含有混合物を調製し、得ら
れた混合物を型枠に200g/m2 塗布した。塗布面を
乾燥した後、下記配合の化粧モルタルを打設し、常法に
従って蒸気養生した後脱型し、脱型直後に洗い出しを行
なった。化粧モルタル セメント:細骨材:種石=1:1:3(重量比) この際の超遅延剤含有混合物の塗布作業性(型枠面への
付着作業の難易性)及び洗い出し仕上げ性(仕上げ面の
良否)を下記基準にて評価し、結果を表1に示した。塗布作業性 ◎:非常に良好 ○:良好 △:使用可洗い出し仕上げ性 ◎:均一でムラがなく非常に良好 ○:ムラがなく良好 △:ムラが若干あり なお、超遅延剤含有混合物の調製に用いた各成分は次の
通りである。
Examples 1 to 6, Comparative Examples 1 and 2, super retarder-containing mixtures were prepared according to the formulations shown in Table 1, and the obtained mixtures were coated on a mold at 200 g / m 2 . After the coated surface was dried, a decorative mortar having the following composition was placed, steam-cured in accordance with a conventional method, then demolded, and washed out immediately after demolding. Decorative mortar cement: Fine aggregate: Seedstone = 1: 1: 3 (weight ratio) At this time, the coating workability of the mixture containing the ultra-retardant (difficulty of work of adhering to the mold surface) and wash-out finish (finishing) The quality of the surface) was evaluated according to the following criteria, and the results are shown in Table 1. Application workability ◎: Very good ○: Good △: Usable wash-out finish ◎: Very good with no unevenness ○: Good with no unevenness Δ: Slightly with unevenness For preparation of the mixture containing the super-retarder The components used are as follows.

【0032】超遅延剤:アミノトリ(メチレンホスホン
酸)とクエン酸との1.5:1(重量比)混合物 粘着付与材:SBR 増量材:シリカフューム 白色系顔料:ZnO
Super retarder: 1.5: 1 (weight ratio) mixture of aminotri (methylenephosphonic acid) and citric acid Tackifier: SBR Extender: Silica fume White pigment: ZnO

【0033】[0033]

【表1】 [Table 1]

【0034】表1より明らかなように、本発明によれ
ば、超遅延剤含有混合物を良好な作業性のもとに塗布
し、表面仕上げ性の良好な製品を製造することができ
る。これに対して、白色系顔料を用いない比較例1では
超遅延剤含有混合物の塗布の有無を十分に確認すること
ができなかったことから塗布ムラが生じ洗い出し仕上げ
性が良くなかった。なお、増量材を用いず白色系顔料を
多量に用いた比較例2では、良好な結果が得られるもの
の材料コスト面で不利であった。
As is clear from Table 1, according to the present invention, the mixture containing the super-retarder can be applied with good workability to produce a product with good surface finish. On the other hand, in Comparative Example 1 in which the white pigment was not used, it was not possible to sufficiently confirm whether or not the super retarder-containing mixture had been applied, and therefore coating unevenness occurred and the wash-out finish was not good. In Comparative Example 2 in which a large amount of the white pigment was used without using the extender, good results were obtained, but the material cost was disadvantageous.

【0035】[0035]

【発明の効果】以上詳述したとおり、本発明のセメント
製品の表面仕上げ方法によれば、超遅延剤の優れた凝固
遅延効果と、粘着付与材、増量材及び白色系顔料を併用
することにより、下記の如き優れた効果がもたらされ、
高品質の製品を容易かつ効果的に得ることができる。
As described in detail above, according to the surface finishing method for a cement product of the present invention, the excellent solidification retarding effect of the ultra-retardant is combined with the use of the tackifier, the extender and the white pigment. , The following excellent effects are brought about,
High quality products can be obtained easily and effectively.

【0036】 型枠面への均一な付着が向上する効果
を有する。 蒸気養生やオートクレーブ養生等の促進養生を施し
た場合でも、セメント製品の表面は、十分洗い出しが可
能であり、脱型直後のみならず、脱型後10日経過後で
も洗い出しが可能である。 上記の如く洗い出しが可能であることから良好な
作業性のもとに、最も適当な時期に洗い出しを行うこと
が可能である。 洗い出し深さの調整も可能であり、均一でムラのな
い洗い出し面を得ることができる。 超遅延剤含有混合物の型枠への付着の有無を一目で
確認でき、2度塗り、塗り残し、塗りムラを防いで、良
好な作業性のもとに、容易かつ確実に超遅延剤含有混合
物を型枠面に付着させることができる。 白色系顔料に酸化亜鉛を用いることにより、凝結遅
延作用が高められ、その結果、洗い出し深さが深くな
る、あるいは遅延作用期間が長くなるなどの効果を有す
る。
It has the effect of improving the uniform adhesion to the mold surface. Even when accelerated curing such as steam curing or autoclave curing is performed, the surface of the cement product can be sufficiently washed out and can be washed out not only immediately after demolding but also 10 days after demolding. Since it is possible to wash out as described above, it is possible to wash out at the most suitable time with good workability. The washout depth can be adjusted, and a uniform washout surface can be obtained. It is possible to check at a glance whether or not the super retarder-containing mixture has adhered to the mold, and it is possible to easily and reliably coat the super retarder-containing mixture with good workability by preventing double-coating, uncoating, and uneven coating. Can be attached to the mold surface. By using zinc oxide as the white pigment, the setting retarding action is enhanced, and as a result, the washing out depth becomes deeper or the retarding action period becomes longer.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 清水 正弘 東京都豊島区池袋二丁目51番13号 菱和コ ンクリート工業株式会社技術部内 (72)発明者 窪園 勉 埼玉県秩父郡皆野町金崎1918番地 菱和コ ンクリート工業株式会社秩父工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masahiro Shimizu Inventor Masahiro Shimizu 2-51-13 Ikebukuro, Toshima-ku, Tokyo Ryowa Concrete Industrial Co., Ltd. Ryowa Concrete Industry Co., Ltd. Chichibu Factory

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 型枠にモルタル又はコンクリートを打設
した後、養生及び脱型し、得られたセメント製品の型枠
当接面から表面のセメントペースト部分を洗い出し仕上
げするセメント製品の表面仕上げ方法であって、該型枠
面に、超遅延剤、粘着付与材、増量材及び白色系顔料を
含む混合物を付着させた後、モルタル又はコンクリート
を打設することを特徴とするセメント製品の表面仕上げ
方法。
1. A surface finishing method for a cement product, which comprises placing mortar or concrete on a formwork, followed by curing and demolding, and washing and finishing the cement paste portion on the surface of the obtained cement product from the abutment face of the formwork. The surface finish of a cement product characterized by placing a mortar or concrete after adhering a mixture containing an ultra-retarder, a tackifier, a filler and a white pigment on the mold surface. Method.
JP20793491A 1991-08-20 1991-08-20 Surface finishing method for cement product Pending JPH0550411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20793491A JPH0550411A (en) 1991-08-20 1991-08-20 Surface finishing method for cement product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20793491A JPH0550411A (en) 1991-08-20 1991-08-20 Surface finishing method for cement product

Publications (1)

Publication Number Publication Date
JPH0550411A true JPH0550411A (en) 1993-03-02

Family

ID=16547963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20793491A Pending JPH0550411A (en) 1991-08-20 1991-08-20 Surface finishing method for cement product

Country Status (1)

Country Link
JP (1) JPH0550411A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5932344A (en) * 1995-02-07 1999-08-03 Daicel-Huels Ltd. Cement retarder and cement retardative sheet
WO2000044833A1 (en) * 1999-01-27 2000-08-03 W.R. Grace & Co.-Conn. Improved sprayable fireproofing composition
US6162288A (en) * 1999-05-19 2000-12-19 W. R. Grace & Co.-Conn. Sprayable fireproofing composition
CN100387628C (en) * 2003-09-26 2008-05-14 赛拉尼斯乳胶有限公司 High-solids aqueous polymer dispersions, their preparation and use

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5932344A (en) * 1995-02-07 1999-08-03 Daicel-Huels Ltd. Cement retarder and cement retardative sheet
US6114033A (en) * 1995-02-07 2000-09-05 Daicel-Huels Ltd. Cement retarder and cement retardative sheet
WO2000044833A1 (en) * 1999-01-27 2000-08-03 W.R. Grace & Co.-Conn. Improved sprayable fireproofing composition
US6406755B1 (en) 1999-01-27 2002-06-18 W.R. Grace & Co.-Conn. Sprayable fireproofing composition
US6162288A (en) * 1999-05-19 2000-12-19 W. R. Grace & Co.-Conn. Sprayable fireproofing composition
CN100387628C (en) * 2003-09-26 2008-05-14 赛拉尼斯乳胶有限公司 High-solids aqueous polymer dispersions, their preparation and use

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