JPH092860A - Cement-based surface-preparation composition - Google Patents
Cement-based surface-preparation compositionInfo
- Publication number
- JPH092860A JPH092860A JP17695795A JP17695795A JPH092860A JP H092860 A JPH092860 A JP H092860A JP 17695795 A JP17695795 A JP 17695795A JP 17695795 A JP17695795 A JP 17695795A JP H092860 A JPH092860 A JP H092860A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- powder
- polymer
- weight
- glass transition
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセメント、細骨材及びポ
リマーからなる下地調整組成物に係り、特にガラス転移
温度を特定した複数の粉末ポリマーを組み合わせること
により気温の高低の区別なく使用可能な高付着性下地調
整組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground control composition composed of cement, fine aggregate and polymer, and in particular, it can be used without distinction between high temperature and low temperature by combining a plurality of powdered polymers having specified glass transition temperatures. It relates to a highly adhesive ground control composition.
【０００２】[0002]
【従来の技術】セメント、骨材、水、ポリマー及び消泡
剤を配合するポリマーセメントコンクリートが開示され
ている（「コンクリート便覧」日本コンクリート工学協
会、Ｐ９８４）。2. Description of the Related Art A polymer cement concrete containing a cement, an aggregate, water, a polymer and a defoaming agent has been disclosed ("Concrete Handbook", Japan Concrete Institute, P984).
【０００３】さらに用途を限定してセメント、細骨材お
よび再乳化形粉末樹脂（合成樹脂エマルジョンを噴霧乾
燥したもので、加水したとき再び乳化する粉末状樹脂で
ある）、さらに場合により混和剤（例、増粘剤）、繊維
材料などを配合した内外装仕上工事の下地調整に使用さ
れるセメント系下地調整塗材が規定されている。品質基
準として、例えば該下地調整塗材Ｃ−１の付着強さは標
準養生時（材令１５日）７．１ｋｇｆ／ｃｍ2 以上、低
温養生時（材令２８日）５．１ｋｇｆ／ｃｍ2以上、同
じくＣ−２のそれらは１０．２ｋｇｆ／ｃｍ2 、７．１
ｋｇｆ／ｃｍ2以上とも規定されている（以上ＪＩＳ
Ａ６９１６）。Further limiting the application, cement, fine aggregate and re-emulsified powder resin (a spray-dried synthetic resin emulsion, which is a powder resin which is re-emulsified when water is added), and optionally an admixture ( (Eg, thickeners), fiber materials, etc. are used to regulate the cement-based base conditioning coating material used for base conditioning in interior and exterior finishing work. As a quality criterion, for example, adhesion strength of the lower locations, adjusting the coating material C-1 when the standard curing (wood age 15 days) 7.1kgf / cm 2 or more, at low temperatures cured (Material age 28 days) 5.1kgf / cm 2 As mentioned above, those of C-2 are 10.2 kgf / cm 2 , 7.1
It is also specified as kgf / cm 2 or higher (above JIS
A6916).
【０００４】また、上記規格にはセメントとしてポルト
ランド系セメントが、細骨材として無機質骨材（例：け
い砂、寒水砂、砂、パーライトなど）および有機質骨材
（例：スチレン、エチレン酢酸ビニル、塩化ビニル等の
粒状樹脂発泡体）が、ならびに再乳化型樹脂としてアク
リル系、酢酸ビニル系などの合成樹脂が示されている。
なお、旧規格には、再乳化型樹脂の配合割合は全粉粒物
に対して４．５重量％以上となるように構成すると規定
されていた。In the above standard, Portland cement is used as the cement, and inorganic aggregates (eg silica sand, cold water sand, sand, pearlite etc.) and organic aggregates (eg styrene, ethylene vinyl acetate) are used as fine aggregates. , Vinyl chloride and other granular resin foams) and re-emulsifying resins such as acrylic and vinyl acetate synthetic resins.
The old standard stipulates that the mixing ratio of the re-emulsifying resin should be 4.5% by weight or more with respect to the total powder and granules.
【０００５】特開昭５８−８００６６には下地組成物が
開示されている。すなわち、セメント１００重量部、細
骨材４００重量部以下、ポリマー固形分１０〜３０重量
部を配合した組成物である。セメントとしては、普通ポ
ルトランドセメント、アルミナセメント、混合セメント
などが、細骨材としてはけい砂、ケイ酸アルミニウムな
どが、ポリマーとしては熱可塑性樹脂、熱硬化性樹脂な
ど多数の化合物が列挙されている。その実施例には１種
類の樹脂ＳＢＲラテックスが示され、それを用いた組成
物の構成はポルトランドセメント１００重量部、ケイ酸
アルミニウム５重量部、ＳＢＲラテックス（固形分４５
ｗｔ％）２５重量部、添加水２５重量部であった。Japanese Unexamined Patent Publication (Kokai) No. 58-80066 discloses a base composition. That is, it is a composition containing 100 parts by weight of cement, 400 parts by weight or less of fine aggregate, and 10 to 30 parts by weight of polymer solid content. As the cement, ordinary portland cement, alumina cement, mixed cement and the like are listed, as fine aggregate, silica sand, aluminum silicate and the like are listed, and as the polymer, a large number of compounds such as thermoplastic resin and thermosetting resin are listed. . One type of resin SBR latex is shown in the example, and the composition of the composition is 100 parts by weight of Portland cement, 5 parts by weight of aluminum silicate, SBR latex (solid content 45%).
wt%) and 25 parts by weight of added water.
【０００６】[0006]
【発明が解決しようとする課題】従来のセメント系下地
調整塗材は、セメント、骨材に比し樹脂単価が高いこと
に加え販売地の気候風土に適合した樹脂を選択し地方単
位で該下地調整塗材の少量生産・販売をしていた。例え
ば気温の高い地方では、その地方に適合した樹脂を専ら
使用して下地調整塗材が製造された。それゆえ、従来の
下地調整塗材は１種類の樹脂を配合するのみで目的を十
分に達成できた。しかし、このような下地調整塗材はそ
の地方において適合した特性を有し実用的ではあって
も、寒気期間の長い地方や寒暖差の大きい地方で使用し
た場合には付着強さが極端に低下して、浮き、はがれ、
ひび割れなどを引き起こす原因となっていた。The conventional cement-based primer adjusting coating material has a higher resin unit price than cement and aggregate, and in addition, a resin suitable for the climatic climate of the place of sale is selected and They were producing and selling small amounts of adjustment coating materials. For example, in regions with high temperatures, the base conditioning coating material was manufactured using resins that are compatible with those regions. Therefore, the conventional base adjustment coating material was able to sufficiently achieve the purpose only by blending one kind of resin. However, even though such an undercoating coating material has properties suitable for the region and is practical, when used in a region with a long cold period or a region with a large temperature difference, the adhesive strength is extremely reduced. Then, float, peel off,
It was a cause of cracking.
【０００７】そのような欠点を解消するには気温（地
域）選択性のない、つまり寒期暖期において付着強さを
十分に発現する、さらに言えば寒暖差における付着強さ
変化の小さい下地調整塗材を使用するのが望ましいので
あるが、未だそのような下地調整塗材は開発されていな
い。In order to eliminate such a defect, there is no temperature (regional) selectivity, that is, the adhesive strength is sufficiently expressed in the cold and warm seasons, and more specifically, the surface conditioning is small in the adhesive strength change in the cold and warm differences. Although it is desirable to use a coating material, such a base conditioning coating material has not yet been developed.
【０００８】以上から、本発明の目的は寒暖いずれの気
温においても高付着強さを保持することのできるセメン
ト系下地調整組成物を提供することにある。SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a cement-based base conditioning composition which can maintain high adhesion strength in both cold and warm temperatures.
【０００９】[0009]
【課題を解決するための手段】本発明者らは、従来のよ
うにセメント系下地調整塗材に単にポリマーが混合され
ただけでは、気温の影響を受けて付着強さが低下する
点、さらに該下地調整塗材製造過程での品質管理を考慮
に入れて研究した。Means for Solving the Problems The present inventors have pointed out that, as in the conventional case, when a polymer is simply mixed with a cement-based base conditioning coating material, the adhesion strength is lowered due to the influence of the temperature, and A study was conducted in consideration of quality control in the manufacturing process of the undercoat coating material.
【００１０】その結果、使用するポリマーの属性の１つ
であるガラス転移温度が付着強さに密接に関連すること
を突き止め、さらに異なるガラス転移温度を有するポリ
マーが一定の割合で組み合わされている場合に付着強さ
に対する温度依存性が小さいことを知見した。また、該
下地調整塗材の製造上、長期保管上から粉末ポリマーの
利用が望ましい点を組み込んで以下に詳述する発明を導
いた。As a result, it was found that the glass transition temperature, which is one of the attributes of the polymers used, is closely related to the bond strength, and further, polymers having different glass transition temperatures are combined in a certain ratio. It was found that the temperature dependence of the adhesive strength was small. In addition, the invention described in detail below has been derived by incorporating the fact that it is desirable to use a powdered polymer from the viewpoint of manufacturing the undercoating coating material and long-term storage.
【００１１】すなわち、本発明は従来のセメント系下地
調整塗材に配合されるポリマーを特定、具体的にはガ
ラス転移温度の相違する粉末ポリマーを少なくとも２種
類組み合わせ、それら粉末ポリマーの１種類はガラス
転移温度が５℃以下のもの（以下、粉末ポリマー（Ａ）
と称する）、もう１種類はガラス転移温度が１０〜２０
℃のもの（以下、粉末ポリマー（Ｂ）と称する）であ
り、粉末ポリマー（Ａ）と（Ｂ）の割合が１５〜８５
重量％、８５〜１５重量％に配合した点にある。さら
に、粉末ポリマー（Ａ）（Ｂ）の合量が全粉粒の３．
０〜２０重量％配合されなければならない。That is, the present invention specifies a polymer compounded in a conventional cement-based undercoating material, specifically, at least two powder polymers having different glass transition temperatures are combined, and one of the powder polymers is a glass. Those having a transition temperature of 5 ° C or lower (hereinafter, powder polymer (A)
Another type has a glass transition temperature of 10 to 20.
C. (hereinafter referred to as powder polymer (B)), and the ratio of powder polymer (A) to (B) is 15 to 85.
%, And 85 to 15% by weight. Furthermore, the total amount of the powdered polymers (A) and (B) is 3.
It must be compounded from 0 to 20% by weight.
【００１２】一般的にポリマーは、粉末状のものとディ
スパージョンのものとが公知である。後者は水を含有す
るためセメント系下地調整塗材にあっては、混合後直ち
にセメントが水和反応を生じ凝結するので該下地調整塗
材の保管はできない。そこで、混合状態でも長期保管可
能な粉末ポリマーが本発明の目的に照らして合致するの
で採用した。Generally, the polymer is known as a powder and a dispersion. Since the latter contains water, the cement-based undercoating coating material cannot be stored in the cement-based undercoating coating material because the cement undergoes a hydration reaction and sets immediately after mixing. Therefore, a powder polymer that can be stored for a long time even in a mixed state is adopted because it meets the object of the present invention.
【００１３】一般に、ガラス転移温度とは高分子物質を
加熱した場合にガラス状のかたい状態からゴム状に変わ
る温度（「化学大辞典２」、共立出版）と解されてい
る。通常、セメント系下地調整塗材の下地への付着性
は、それに含まれているポリマーのガラス転移温度の高
い方が低いものに比して高く、またポリマーがゴム状で
ある場合に膜形成性を有し付着性も高く、逆に温度が低
くガラス状の場合に付着性が低下する傾向にある。しか
し、本発明者らが種々実験したところ、意外にもガラス
転移温度が相違する特定の粉末ポリマーを少なくとも２
種類組み合わせることによって、気温変化があっても高
い付着強さを保持することを確認した。Generally, the glass transition temperature is understood to be the temperature at which a glassy hard state changes to a rubbery state when a polymer substance is heated ("Kagaku Daijiten 2", Kyoritsu Shuppan). Generally, the adhesion of cement-based ground control coating material to the base is higher when the polymer contained in it has a higher glass transition temperature than when it is low, and when the polymer is rubber-like, the film-forming property is high. The adhesiveness is high and the adhesiveness tends to decrease when the temperature is low and the material is glassy. However, as a result of various experiments conducted by the present inventors, it was surprisingly found that at least two specific powdered polymers having different glass transition temperatures were used.
It was confirmed that by combining the types, high adhesion strength is maintained even when the temperature changes.
【００１４】粉末ポリマーの少なくとも２種類は前述し
たそれぞれのガラス転移温度の範囲内にあることが肝要
である。例えば、２種類の粉末ポリマーを用いるなら
ば、共に５℃以下、または共に１０〜２０℃に偏った場
合、あるいは１種類の粉末ポリマーは規定したガラス転
移温度に適合するが、もう１種類の粉末ポリマーは規定
外のガラス転移温度である場合、いずれの場合も規定の
ガラス転移温度の粉末ポリマーを欠いた温度領域におい
て付着強さが急激に低下し、ＪＩＳ Ａ６９１６に規定
する品質基準Ｃ−２を満足しない。It is important that at least two kinds of powder polymers are within the respective glass transition temperature ranges mentioned above. For example, if two kinds of powder polymers are used, if both are 5 ° C. or less, or both are biased to 10 to 20 ° C., or one kind of powder polymer is compatible with the specified glass transition temperature, but the other kind of powder is used. When the polymer has a non-specified glass transition temperature, in any case, the adhesive strength sharply decreases in the temperature range lacking the powdered polymer having the specified glass transition temperature, and the quality standard C-2 specified in JIS A6916 is specified. I'm not satisfied.
【００１５】粉末ポリマー（Ａ）及び（Ｂ）に該当する
ものとしては、アクリル−酢酸ビニル−ヴェオバ共重合
体、エチレン−酢酸ビニル−ヴェオバ共重合体、アクリ
ル−スチレン共重合体、アクリル酸エステル共重合体、
酢酸ビニル共重合体などが挙げられる。ここで、同一化
合物名の共重合体であっても、それを構成する軟質成分
と硬質成分との比率（つまり共重合率）によってガラス
転移温度が相違するので、使用するさいその共重合体が
粉末ポリマー（Ａ）、（Ｂ）いずれに該当するのかを確
認する必要がある。Examples of powder polymers (A) and (B) include acrylic-vinyl acetate-veova copolymers, ethylene-vinyl acetate-veova copolymers, acrylic-styrene copolymers, acrylic ester copolymers. Polymer,
Examples thereof include vinyl acetate copolymer. Here, even if the copolymers have the same compound name, the glass transition temperature varies depending on the ratio (that is, the copolymerization rate) of the soft component and the hard component constituting the copolymer, so that the copolymer to be used is It is necessary to confirm whether it corresponds to powder polymer (A) or (B).
【００１６】なお、一つのガラス転移温度範囲に属する
粉末ポリマーを２種類以上併用することは差し支えな
い。例えば、粉末ポリマー（Ａ）に属する２種類以上と
粉末ポリマー（Ｂ）に属する１種類とを組み合わせて使
用することは可能である（この場合は３種類の粉末ポリ
マーを使用することになる）。Incidentally, it is possible to use two or more kinds of powdered polymers belonging to one glass transition temperature range in combination. For example, it is possible to use two or more kinds belonging to the powder polymer (A) and one kind belonging to the powder polymer (B) in combination (in this case, three kinds of powder polymers are used).
【００１７】（Ａ）および（Ｂ）の粉末ポリマーのほか
に、それらのガラス転移温度に属さない粉末ポリマー
（Ｃ）を添加することは差し支えないが、その配合量は
本願目的を害さない程度に置き換えが可能である。具体
的には、（Ａ）、（Ｂ）及び（Ｃ）の合量に対し該
（Ｃ）の割合が３０重量％以下でなければならない。こ
こでは、規定外ポリマー（Ｃ）として粉末のものを説明
したが、本発明のセメント系下地調整組成物を現場で混
練するさいに、粉末のものに換えてポリマーディスパー
ジョンを添加するようにしてもよい。In addition to the powder polymers (A) and (B), it is possible to add the powder polymer (C) which does not belong to the glass transition temperature thereof, but the blending amount thereof should be such that the purpose of the present application is not impaired. It can be replaced. Specifically, the ratio of (C) must be 30% by weight or less with respect to the total amount of (A), (B) and (C). Here, although the powder of the non-specified polymer (C) has been described, the polymer dispersion may be added in place of the powder when the cement-based ground control composition of the present invention is kneaded on site. Good.
【００１８】粉末ポリマーの配合量（規定以外のガラス
転移温度に属する粉末ポリマーも用いる場合は、その粉
末ポリマーも含む）は、粉末ポリマーを含む全粉粒に対
し３．０〜２０重量％、好ましいのは４．５〜１５重量
％である。配合量が３．０重量％以下または２０重量％
を超えると、付着強さが低下する場合もあるので好まし
くない。The blending amount of the powdery polymer (when the powdery polymer belonging to a glass transition temperature other than the specified is also included, the powdery polymer is also included), the content is 3.0 to 20% by weight based on the total powder particles including the powdery polymer, and preferably. Is 4.5 to 15% by weight. Compounding amount less than 3.0% by weight or 20% by weight
If it exceeds, the adhesion strength may decrease, which is not preferable.
【００１９】粉末ポリマー（Ａ）及び同（Ｂ）との配合
割合は１５〜８５重量％、８５〜１５重量％である。粉
末ポリマー（Ａ）が１５重量％未満の場合は低温におけ
る付着強さの発現が低く、逆に８５重量％を超える場合
は相対的に粉末ポリマー（Ｂ）が少なすぎて常温付近で
の付着強さが著しく低下するので、いずれも好ましくな
い。付着強さの観点から好ましい配合割合は３０〜７０
重量％、７０〜３０重量％である。The blending ratio with the powder polymer (A) and the powder polymer (B) is 15 to 85% by weight and 85 to 15% by weight. When the powder polymer (A) is less than 15% by weight, the adhesion strength at low temperature is low, and when it exceeds 85% by weight, the powder polymer (B) is too small and the adhesion strength at room temperature is relatively low. However, both are not preferable. From the viewpoint of adhesion strength, the preferable mixing ratio is 30 to 70.
% By weight, 70 to 30% by weight.
【００２０】本発明で使用するセメントは、慣用のセメ
ント、例えば普通ポルトランドセメント、早強ポルトラ
ンドセメント、超速硬性セメントのほか、高炉セメン
ト、シリカセメントなどの混合セメントである。The cement used in the present invention is a conventional cement, for example, ordinary Portland cement, early-strength Portland cement, ultra-rapid cement, or mixed cement such as blast furnace cement and silica cement.
【００２１】細骨材は、特に材質について限定しない。
その最大粒径は調整しようとする基板（下地）面のオー
プンポア、平滑度などの状態や塗布厚に応じて適宜選択
すればよい。セメントと細骨材の比率は用途に応じ又従
来法に従い適宜決めればよく、特に本願では限定しな
い。なお、セメント系下地調整塗材に従来から添加され
ている可塑剤、繊維材料、混和剤（例：防水剤、増粘
剤、分散剤、安定剤）、無機質粉体（例：炭酸カルシウ
ム、クレー、タルク、マイカ、けい石粉）等々を本発明
の目的に影響しない程度に添加することは差し支えな
い。The material of the fine aggregate is not particularly limited.
The maximum particle size may be appropriately selected depending on the state of the substrate (base) surface to be adjusted such as open pores and smoothness and the coating thickness. The ratio of cement to fine aggregate may be appropriately determined according to the application and according to the conventional method, and is not particularly limited in the present application. In addition, plasticizers, fiber materials, admixtures (eg waterproofing agents, thickeners, dispersants, stabilizers), inorganic powders (eg calcium carbonate, clay) that have been conventionally added to cement-based ground control coating materials. , Talc, mica, silica powder, etc. may be added to such an extent that the object of the present invention is not affected.
【００２２】本発明のセメント系下地調整組成物を構成
する材料は、全て容易に入手可能な粉粒物を採用した。
しかも、それら材料を前述した配合割合にしたがい工業
的常套手段で混合すれば、一定品質のセメント系下地調
整組成物の製造ができるので、実施化が非常に容易であ
る。As the materials constituting the cement-based base conditioning composition of the present invention, all easily available powdery or granular materials were adopted.
Moreover, if these materials are mixed according to the above-mentioned mixing ratio by an industrially customary means, a cement-based ground control composition of constant quality can be produced, so that it is very easy to put into practice.
【００２３】［実施例１−４５、比較例１−２４］種々
の粉末ポリマーを用いてセメント系下地調整組成物を製
造し、ガラス転移温度が付着強さに及ぼす影響、粉末ポ
リマー（Ａ）と（Ｂ）の配合割合の影響等を調べた。[Example 1-45, Comparative Example 1-24] A cement-based base conditioning composition was produced using various powder polymers, and the effect of the glass transition temperature on the adhesion strength, powder polymer (A) and The influence of the blending ratio of (B) was investigated.
【００２４】１．使用材料 １）粉末ポリマー８種類（ガラス転移温度：Ｔｇ） （ａ）アクリル−酢酸ビニル−ヴェオバ共重合体（Ｔ
ｇ：−５℃） （ｂ）エチレン−酢酸ビニル−ヴェオバ共重合体（Ｔ
ｇ：０℃） （ｃ）アクリル−スチレン共重合体（Ｔｇ：３℃） （ｄ）アクリル−スチレン共重合体（Ｔｇ：７℃） （ｅ）酢酸ビニル−ヴェオバ共重合体（Ｔｇ：８℃） （ｆ）アクリル酸エステル共重合体（Ｔｇ：１０℃） （ｇ）アクリル酸エステル共重合体（Ｔｇ：１５℃） （ｈ）酢酸ビニル共重合体（Ｔｇ：２０℃） ２）セメント 早強ポルトランドセメント（日本セメント社製） ３）細骨材 けい砂７号及びけい砂８号（いずれも最大粒径は０．４
ｍｍ）を３：１（重量比）に混合したものを使用した。1. Materials used 1) Eight kinds of powder polymer (glass transition temperature: Tg) (a) Acrylic-vinyl acetate-Veova copolymer (T
g: −5 ° C.) (b) Ethylene-vinyl acetate-Veova copolymer (T
g: 0 ° C.) (c) Acrylic-styrene copolymer (Tg: 3 ° C.) (d) Acrylic-styrene copolymer (Tg: 7 ° C.) (e) Vinyl acetate-Veova copolymer (Tg: 8 ° C.) ) (F) Acrylic ester copolymer (Tg: 10 ° C) (g) Acrylic ester copolymer (Tg: 15 ° C) (h) Vinyl acetate copolymer (Tg: 20 ° C) 2) Cement Early strength Portland cement (manufactured by Nippon Cement Co., Ltd.) 3) Fine aggregate silica sand No. 7 and silica sand No. 8 (both have a maximum particle size of 0.4)
mm) was used in a mixture of 3: 1 (weight ratio).
【００２５】２．セメント系下地調整組成物の調整 上記各材料を用いて表１に示す比率で配合し、ビニル袋
内で十分混合してそれぞれの粉末組成物を調整した。2. Preparation of Cementitious Base Conditioning Composition Each of the above materials was blended in the ratio shown in Table 1 and thoroughly mixed in a vinyl bag to prepare each powder composition.
【００２６】３．付着強さ測定方法 得られた各粉末組成物を機械練り混ぜ用モルタルミキサ
ーに投入し、次に全粉粒に対して２４重量％の水を添加
し、４分間十分に混練してモルタルをつくった。供試体
の作製および測定方法は、ＪＩＳ Ａ６９１６「仕上塗
材用下地調整塗材」の６．１４に準拠した。3. Adhesion Strength Measurement Method Each of the obtained powder compositions was placed in a mortar mixer for mechanical kneading, and then 24% by weight of water was added to all powder particles, and kneaded thoroughly for 4 minutes to prepare a mortar. It was The method for producing and measuring the test piece was in accordance with JIS A6916 “Undercoat Conditioning Coating Material for Finishing Coating Material”, 6.14.
【００２７】すなわち、別途に作製した７０×７０×２
０ｍｍの大きさのモルタル製基板上に載置した型枠内
に、上記粉末組成物のモルタル混練物をこてを用いて４
０×４０×２ｍｍに塗布し成形したのち、下記２とおり
の条件のもとで２４時間養生し脱型した。 温度：２０℃、相対湿度：６０％ 温度： ３℃、相対湿度：５０％ さらに同条件のもとでそれぞれの供試体を１３日間養生
した。次いで、同条件下で供試体の表面に２液形エポキ
シ樹脂接着剤を用いて引張用ジグを取り付け、２４時間
静置したのち、供試体面に対して鉛直方向の最大引張荷
重を求め、材令１５日の付着強さを算出した。得られた
結果を表１及び表２に記載した。判定はＪＩＳ Ａ６９
１６の「下地調整塗材Ｃ−２」に依った。That is, separately prepared 70 × 70 × 2
Using a trowel, the mortar-kneaded product of the above powder composition was placed in a mold placed on a mortar-made substrate having a size of 0 mm.
After being applied to 0 × 40 × 2 mm and molded, it was cured and demolded for 24 hours under the following two conditions. Temperature: 20 ° C., relative humidity: 60% Temperature: 3 ° C., relative humidity: 50% Further, each specimen was aged for 13 days under the same conditions. Then, under the same conditions, a tension jig was attached to the surface of the test piece using a two-component epoxy resin adhesive and allowed to stand for 24 hours. Then, the maximum tensile load in the vertical direction with respect to the test piece surface was obtained. The adhesion strength on the 15th day was calculated. The obtained results are shown in Tables 1 and 2. Judgment is JIS A69
16 "Base adjustment coating material C-2" was used.
【００２８】［実施例４６−７３、比較例２５−４２］
粉末ポリマー（Ａ）（Ｂ）の合量の全粉粒に占める割合
の影響、ガラス転移温度が規定外である粉末ポリマーの
影響等を調べた。前記実施例・比較例で説明した使用材
料中、セメントを早強ポルトランドセメントから普通ポ
ルトランドセメント（日本セメント社製）に取り替えた
以外は同一材料を用い、同様の方法で供試体をつくり、
同一条件のもとで該供試体の付着強さを測定した。各粉
末ポリマー、配合割合、測定結果を表３に示した。[Examples 46-73, Comparative Examples 25-42]
The influence of the ratio of the total amount of the powdered polymers (A) and (B) in the total powder particles, the influence of the powdered polymer having a glass transition temperature out of the specified range, and the like were investigated. Among the materials used in the examples and comparative examples, the same material was used except that the cement was replaced with normal Portland cement (manufactured by Nippon Cement Co., Ltd.) from early-strength Portland cement, and a specimen was prepared by the same method,
The adhesion strength of the test piece was measured under the same conditions. Table 3 shows each powder polymer, blending ratio, and measurement result.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【表３】 [Table 3]
【００３２】[0032]
【発明の効果】以上の結果、特定のガラス転移温度を有
する２種類以上の粉末ポリマーを組み合わせたセメント
系下地調整組成物を建築物の内外装仕上材として下地調
整に使用した場合、気温の大幅な変化に対しても高付着
強さを保持することが確認された。As a result of the above, when a cement-based base conditioning composition in which two or more kinds of powdered polymers having a specific glass transition temperature are combined is used as an interior / exterior finishing material for a building for the base conditioning, the temperature is significantly increased. It was confirmed that high adhesion strength was maintained even with various changes.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｄ 1/08 ＰＣＰ Ｃ０９Ｄ 1/08 ＰＣＰ Ｃ０９Ｊ 1/00 ＪＡＡ Ｃ０９Ｊ 1/00 ＪＡＡ Ｅ０４Ｆ 13/02 8913−2Ｅ Ｅ０４Ｆ 13/02 Ａ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C09D 1/08 PCP C09D 1/08 PCP C09J 1/00 JAA C09J 1/00 JA E04F 13/02 8913 -2E E04F 13/02 A
Claims (3)
末ポリマーからなるセメント系下地調整塗材において、
該粉末ポリマーがガラス転移温度５℃以下の粉末ポリマ
ー（Ａ）１５〜８５重量％およびガラス転移温度１０〜
２０℃の粉末ポリマー（Ｂ）８５〜１５重量％よりな
り、かつそれら粉末ポリマーの合量の配合割合が全粉粒
に対して３．０〜２０重量％である高付着性セメント系
下地調整組成物。1. A cement-based undercoating coating material comprising cement, fine aggregate and two or more kinds of powder polymers,
The powder polymer is 15 to 85% by weight of the powder polymer (A) having a glass transition temperature of 5 ° C. or lower and a glass transition temperature of 10 to 10.
A highly adherent cement-based base conditioning composition comprising 85 to 15% by weight of the powder polymer (B) at 20 ° C., and the total compounding ratio of the powder polymers is 3.0 to 20% by weight based on all powder particles. Stuff.
（Ｂ）の配合割合が３０〜７０重量％及び７０〜３０重
量％である請求項１に記載の高付着性セメント系下地調
整組成物。2. The highly adhesive cementitious undercoat conditioning composition according to claim 1, wherein the blending ratio of the powder polymer (A) and the powder polymer (B) is 30 to 70% by weight and 70 to 30% by weight.
粉末ポリマー（Ｂ）の合量の配合割合が４．５〜１５重
量％である請求項１に記載の高付着性セメント系下地調
整組成物。3. The highly adhesive cementitious undercoat conditioning composition according to claim 1, wherein the total content of the powder polymer (A) and the powder polymer (B) is 4.5 to 15% by weight with respect to all the powder particles. Stuff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7176957A JP3023406B2 (en) | 1995-06-21 | 1995-06-21 | Cement-based base adjustment composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7176957A JP3023406B2 (en) | 1995-06-21 | 1995-06-21 | Cement-based base adjustment composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH092860A true JPH092860A (en) | 1997-01-07 |
| JP3023406B2 JP3023406B2 (en) | 2000-03-21 |
Family
ID=16022679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7176957A Expired - Fee Related JP3023406B2 (en) | 1995-06-21 | 1995-06-21 | Cement-based base adjustment composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3023406B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006124232A (en) * | 2004-10-28 | 2006-05-18 | Taiheiyo Material Kk | Method of repairing reinforced concrete structure |
| JP2018059104A (en) * | 2017-10-18 | 2018-04-12 | 株式会社ジェイアール総研エンジニアリング | Anticorrosive undercoat material for steel material |
-
1995
- 1995-06-21 JP JP7176957A patent/JP3023406B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006124232A (en) * | 2004-10-28 | 2006-05-18 | Taiheiyo Material Kk | Method of repairing reinforced concrete structure |
| JP4700950B2 (en) * | 2004-10-28 | 2011-06-15 | 太平洋マテリアル株式会社 | Repair method for reinforced concrete structures |
| JP2018059104A (en) * | 2017-10-18 | 2018-04-12 | 株式会社ジェイアール総研エンジニアリング | Anticorrosive undercoat material for steel material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3023406B2 (en) | 2000-03-21 |
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