JP3367996B2 - Mortar composition for floor and construction method using the same - Google Patents

Mortar composition for floor and construction method using the same

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Publication number
JP3367996B2
JP3367996B2 JP15635393A JP15635393A JP3367996B2 JP 3367996 B2 JP3367996 B2 JP 3367996B2 JP 15635393 A JP15635393 A JP 15635393A JP 15635393 A JP15635393 A JP 15635393A JP 3367996 B2 JP3367996 B2 JP 3367996B2
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Prior art keywords
aggregate
floor
specific gravity
bulk specific
mortar composition
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JP15635393A
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Japanese (ja)
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JPH07172895A (en
Inventor
佐々木　　実
原田　　進
Original Assignee
富士川建材工業株式会社
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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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00405—Materials with a gradually increasing or decreasing concentration of ingredients or property from one layer to another
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • 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
    • C04B2111/60—Flooring materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Floor Finish (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)

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、簡単に混練りができ、
煩雑な施工工程を採らなくても１工程で４０〜１ｍｍ程
度の厚みに施工することができ、収縮等による浮きや亀
裂を生じにくく、曲げ強度の高い床用モルタル組成物及
びこれを用いた工法に関するものである。BACKGROUND OF THE INVENTION The present invention allows easy kneading,
A mortar composition for floors, which can be applied to a thickness of about 40 to 1 mm in one step without complicated steps, is unlikely to cause floating or cracking due to shrinkage, etc., and has a high bending strength, and a method of using the same. It is about.

【０００２】[0002]

【従来の技術】従来より、建築物の床仕上げは、セメン
トモルタル塗りが一般的である。床のセメントモルタル
塗りは、金ごてを用いて屈んだ姿勢で塗り付けていく作
業であるため、大変な労力と熟練とを要するものであ
る。特に、コンクリート打設直後の雨による叩かれ（雨
だたき）の補修には、雨だたき部分の除去、コンク
リート表面の粉塵の除去、下地処理、凹部の大きい
部分の補修、凹部の小さい部分の補修、表面仕上
げ、という各工程を経る必要がある。そして、この各工
程は窮屈な姿勢での作業が多いために、近年の高齢化が
進んでいる技能労働者にとっては大変な重労働である。2. Description of the Related Art Conventionally, cement mortar coating has been generally used for floor finishing of buildings. Applying cement mortar to the floor requires a great deal of labor and skill because it is an operation of applying the bent posture using a metal iron. In particular, for repairing beating (raining) due to rain immediately after placing concrete, removal of rained parts, removal of dust on concrete surface, base treatment, repair of large recesses, repair of small recesses It is necessary to go through each process of repairing and surface finishing. Since each of these processes often involves a cramped posture, it is a heavy labor for skilled workers who are aging in recent years.

【０００３】[0003]

【発明が解決しようとする課題】そこで、最近では作業
を簡便して軽労働化にするために流動性を高めた床材で
あるセルフレベリング材（＝ＳＬ材）が開発され、使用
実績が増加している。ＳＬ材には石膏系ＳＬ材とセメン
ト系ＳＬ材とがあり、石膏系ＳＬ材は乾燥収縮が小さい
という長所はあるが、石膏であるため耐水性に乏しく、
使用場所を限定され、且つ金属を発錆させるという欠点
を有している。一方、セメント系ＳＬ材も、収縮が大き
く、浮きやクラックが発生したり、強度が充分でないと
いうな数多くの欠点を有している。このように同一材料
で、薄塗りも厚塗りも可能な施工性と、十分なモルタル
物性とを併せ持つような材料はなく、施工状況により材
料を適宜に選択する必要があったり、或いは前もっての
補修が必要であり、施工及び管理が極めて面倒なものと
なっている。Therefore, recently, a self-leveling material (= SL material), which is a floor material with improved fluidity, has been developed in order to simplify the work and make it light labor, and its use record has increased. is doing. The SL materials include gypsum-based SL materials and cement-based SL materials. The gypsum-based SL materials have the advantage of having a small drying shrinkage, but since they are gypsum, they have poor water resistance,
It has the drawbacks that the place of use is limited and the metal rusts. On the other hand, cement SL materials also have many drawbacks such as large shrinkage, floating or cracking, and insufficient strength. In this way, there is no material that has both the workability that enables thin and thick coating and sufficient mortar physical properties, and it is necessary to select the material appropriately depending on the construction situation, or repair in advance. Is required, and construction and management are extremely troublesome.

【０００４】さらに、床のセメントモルタル塗り工事に
おける浮きやクラックの防止に関しては、長年に亙り種
々の方法が研究、提案されている。例えば特公昭６０−
９１８６号公報には被下地調整面に、セメントに天然ゴ
ムラテックス、クロロプレンラテックス、ＳＢＲラテッ
クス等を混入したプライマーを塗布し、湿潤状態を保つ
間にパーライトやバーミキュライト等の保水性骨材、ゴ
ムラテックス、セメントを混練りしてなる下地調整材を
塗着する方法が開示されている。しかしながらこの方法
は、セメントモルタルの浮き、クラックを解消すること
はできるが、特に雨だたき床面などのようにモルタルを
厚く塗り、床面全体を平滑面に仕上げる必要がある場合
には、最低でも３工程、下地の状況により４〜５工程か
かる場合もあり、床面積の大きい現場では前述のように
非常に重労働である。Further, various methods have been studied and proposed over the years for preventing floating and cracks in floor cement mortar coating work. For example, Japanese Patent Publication Sho 60-
Japanese Patent No. 9186 discloses that a primer prepared by mixing natural rubber latex, chloroprene latex, SBR latex, etc. into cement is applied to a surface to be adjusted, and a water-retentive aggregate such as perlite or vermiculite, rubber latex, etc. while maintaining a wet state. A method of applying an undercoat material prepared by kneading cement is disclosed. However, this method can remove the floating and cracks of cement mortar, but especially when it is necessary to apply thick mortar and to finish the entire floor surface to a smooth surface such as a rain floor, However, it may take 3 steps or 4 to 5 steps depending on the condition of the groundwork, which is very hard work as mentioned above at a site with a large floor area.

【０００５】したがって、建築現場の床のセメントモル
タル塗り工事における種々の問題点を解決することがで
きる床用モルタル組成物及び工法が希求されていた。
尚、床用モルタル組成物及び工法の要求特性を要約する
と以下Ａ〜Ｆのようになる。 Ａ．施工性が簡便である。 Ｂ．施工工程が少ない。 Ｃ．乾燥収縮が少なく、浮き、クラックを生じない。 Ｄ．強度が高い。 Ｅ．仕上げ面が美麗である。 Ｆ．塗厚が４０〜１ｍｍ程度の薄塗りから厚塗りまで同
一材料で施工できる。Therefore, there has been a demand for a mortar composition for floors and a construction method capable of solving various problems in cement mortar coating work for floors at construction sites.
The required characteristics of the mortar composition for floors and the construction method are summarized below as AF. A. Easy to install. B. There are few construction processes. C. Little drying shrinkage, no floating and no cracking. D. High strength. E. The finished surface is beautiful. F. The same material can be applied from thin coating with a coating thickness of about 40 to 1 mm to thick coating.

【０００６】[0006]

【課題を解決するための手段】本発明は、上記に鑑み提
案されたもので、嵩比重３．０〜１．５で粒度５．０〜
０．１ｍｍの骨材８０〜１０ｗｔ％と、嵩比重１．５〜
１．０で粒度２．０〜０．１ｍｍの骨材５０〜５ｗｔ％
と、嵩比重１．０〜０．４で粒度１．０〜０．０１ｍｍ
の骨材５０〜１ｗｔ％と、を含有し、必要に応じて高性
能減水剤、増粘剤、収縮低減剤、再乳化粉末状樹脂等を
添加してなることを特徴とする床用モルタル組成物に関
するものである。The present invention has been proposed in view of the above, and has a bulk specific gravity of 3.0 to 1.5 and a particle size of 5.0 to
80 to 10 wt% of aggregate of 0.1 mm and bulk specific gravity of 1.5 to
50 to 5 wt% of an aggregate having a particle size of 2.0 to 0.1 mm at 1.0
And a bulk specific gravity of 1.0 to 0.4 and a particle size of 1.0 to 0.01 mm
50 to 1 wt% of the aggregate of
Water reducing agent, thickening agent, shrinkage reducing agent, re-emulsifying powdery resin, etc.
The present invention relates to a floor mortar composition characterized by being added .

【０００７】上記の本発明の床用モルタル組成物を厚さ
４０〜１ｍｍに塗工すると、上記嵩比重が大きな骨材は
下方（コンクリート表面近傍）に多く分布し、上記嵩比
重が小さな骨材は上方（仕上げ面近傍）に多く分布する
ものとなる。When the above-mentioned floor mortar composition of the present invention is applied to a thickness of 40 to 1 mm, the aggregate having a large bulk specific gravity is distributed in the lower portion (near the concrete surface), and the aggregate having a small bulk specific gravity is obtained. Is more distributed in the upper part (near the finished surface).

【０００８】即ち嵩比重３．０〜１．５で粒度５．０〜
０．１ｍｍの骨材８０〜１０ｗｔ％と、嵩比重１．５〜
１．０で粒度２．０〜０．１ｍｍの骨材５０〜５ｗｔ％
と、嵩比重１．０〜０．４で粒度１．０〜０．０１ｍｍ
の骨材５０〜１ｗｔ％と、の３種類の骨材を用いると、
図１の模式図に示すように下方から順に嵩比重３．０〜
１．５の骨材ａが主に含まれる層１、嵩比重１．５〜
１．０の骨材ｂが主に含まれる層２、嵩比重１．０〜
０．４の骨材ｃが主に含まれる層３の３層が形成される
こととなる。そして、層１では骨材ａが大きいため厚塗
りが可能であり、厚塗りしてもセメント比が低いため収
縮が小さい。層３ではセメント比が高く滑らかな表面と
なり、強度も強くなる。また、層３の上方にはセメント
ノロのみで構成される１ｍｍ程度の層４が形成され、平
滑な仕上げ面が得られる。即ち、前記Ａ〜Ｆの要求特性
を全て満足するものとなる。さらに、骨材ａ，ｂ，ｃは
粒度が順次小さくなるようにしてその差も小さいので、
層１と層２との層間、並びに層２と層３との間の層間で
剥離することがない。 That is, the bulk specific gravity is 3.0 to 1.5 and the particle size is 5.0 to
80 to 10 wt% of aggregate of 0.1 mm and bulk specific gravity of 1.5 to
50 to 5 wt% of an aggregate having a particle size of 2.0 to 0.1 mm at 1.0
And a bulk specific gravity of 1.0 to 0.4 and a particle size of 1.0 to 0.01 mm
50% to 1 wt% of the aggregate of
As shown in the schematic view of FIG. 1, the bulk specific gravity is 3.0 to
Layer 1 mainly containing 1.5 of aggregate a, bulk specific gravity of 1.5 to
Layer 2 mainly containing an aggregate b of 1.0, bulk specific gravity of 1.0 to
Three layers of the layer 3 mainly containing the aggregate c of 0.4 will be formed. Further, in the layer 1, since the aggregate a is large, thick coating is possible, and even if thick coating is applied, the shrinkage is small because the cement ratio is low. Layer 3 has a high cement ratio, a smooth surface, and strength. In addition, a layer 4 of about 1 mm composed only of cement paste is formed above the layer 3 to obtain a smooth finished surface. That is, all the required characteristics A to F are satisfied. Further, since the aggregates a, b, and c are made to have smaller particle sizes in order, the difference is small,
No peeling occurs between the layers 1 and 2 and between the layers 2 and 3.

【０００９】上記嵩比重３．０〜１．５の骨材として
は、珪砂、高炉スラグ、ジルコン砂（ＺｒＯ2 ・ＳｉＯ
2 ）、クロマイト砂（（ＦｅＭｇ）Ｏ・Ｃｒ2 Ｏ3 ）、
オリビン砂（２（Ｍｇ・Ｆｅ）Ｏ・ＳｉＯ2 ）、ガーネ
ット、銅がらみ、スチールショット、天然エメリー、或
いは鉱さいを破砕して特殊加工したスピネル（Ｓｐｉｎ
ｅｌ）・ＭｇＯ・Ａｌ2 Ｏ3 とフォルステライト（Ｆｏ
ｒｓｔｅｒｉｔｅ）・２ＭｇＯ・ＳｉＯ2 ・ＦｅＯの結
晶を有する緻密な組織を持つ骨材等を使用することがで
き、粒度は５〜０．１ｍｍに調整し、８０〜１０ｗｔ％
の範囲で使用する。粒度は好ましくは２．５〜０．５ｍ
ｍの範囲で使用し、２．５ｍｍを越えると薄塗りできな
くなり、０．５ｍｍ以下であると厚塗りするとクラック
発生の原因になる。As the aggregate having a bulk specific gravity of 3.0 to 1.5, silica sand, blast furnace slag, zircon sand (ZrO 2 .SiO 2
2 ), chromite sand ((FeMg) O.Cr 2 O 3 ),
Olivine sand (2 (Mg · Fe) O · SiO 2 ), garnet, copper entrapment, steel shot, natural emery, or specially processed spinel (Spin)
el) ・ MgO ・ Al 2 O 3 and forsterite (Fo)
Rasterite) · 2MgO · SiO 2 · FeO crystals having a dense structure can be used, and the grain size is adjusted to 5 to 0.1 mm, and 80 to 10 wt%
Use in the range of. Particle size is preferably 2.5-0.5 m
If it is used in the range of m, and it exceeds 2.5 mm, thin coating cannot be performed, and if it is 0.5 mm or less, thick coating causes cracks.

【００１０】また、嵩比重１．５〜１．０の骨材として
は、珪砂、寒水石、砕石等を使用することができ、粒度
は２〜０．３ｍｍに調整し、５０〜５ｗｔ％の範囲で使
用する。５０ｗｔ％を越えると薄塗りできなくなり、５
ｗｔ％以下であるとクラック発生の原因になる。Further, as the aggregate having a bulk specific gravity of 1.5 to 1.0, silica sand, cold water stone, crushed stone and the like can be used, and the particle size is adjusted to 2 to 0.3 mm, and 50 to 5 wt%. Used in the range. If it exceeds 50 wt%, thin coating cannot be done.
If it is less than wt%, cracks may occur.

【００１１】さらに、嵩比重１．０〜０．４の骨材とし
ては、流紋岩系天然硝子質軽量骨材、凝灰岩系天然硝子
質軽量骨材等を使用することができ、粒度は１．０〜
０．０１ｍｍに調整し、５０〜１ｗｔ％の範囲で使用す
る。５０ｗｔ％を越えると表面の仕上りが良くなく、表
面強度が弱くなり、１ｗｔ％以下であれば表面にクラッ
クが入り易い。As the aggregate having a bulk specific gravity of 1.0 to 0.4, rhyolitic natural vitreous lightweight aggregate, tuff natural vitreous lightweight aggregate and the like can be used, and the grain size is 1 .0 to
It is adjusted to 0.01 mm and used in the range of 50 to 1 wt%. If it exceeds 50 wt%, the surface finish is not good and the surface strength becomes weak, and if it is 1 wt% or less, cracks are likely to occur on the surface.

【００１２】尚、骨材は、前記の条件（少なくとも嵩比
重が大きく且つ粒度が大きな骨材と、該骨材より嵩比重
が小さく且つ粒度が小さな骨材とを含む）を満足し、且
つ用途に応じた表面強度を発現するようなものを適宜に
選定する。The aggregate satisfies the above-mentioned conditions (including at least an aggregate having a large bulk specific gravity and a large grain size, and an aggregate having a small bulk specific gravity and a small grain size than the aggregate), and its application A material that exhibits a surface strength according to the above is appropriately selected.

【００１３】また、これら骨材と共に添加する高性能減
水剤としては、ナフタリンスルホン酸ホルマリン縮合物
塩、スルホン化メラミンホルマリン縮合物塩、メチロー
ルメラミン縮合物塩等を使用することができる。床用モ
ルタル組成物は、通常のモルタル組成物に比べて混水量
を多くすることにより、流動性を高めて作業性を良くし
ているのであるが、混水量を多くすると強度が低下した
り、収縮が大きくなるので好ましくない。したがって、
上記の高性能減水剤を加えて流動性を持たせたまま混水
量をできるだけ少なくする必要がある。その添加割合は
通常セメントに対して約１．５〜０．５％であるが、施
工条件に応じた流動性や作業性等を考慮して適宜に設定
すれば良い。As the high-performance water reducing agent added together with these aggregates, naphthalenesulfonic acid formalin condensate salt, sulfonated melamine formalin condensate salt, methylol melamine condensate salt and the like can be used. The floor mortar composition, by increasing the amount of mixed water compared to a normal mortar composition, improves the fluidity and improves the workability, but if the amount of mixed water is increased, the strength decreases, It is not preferable because the shrinkage becomes large. Therefore,
It is necessary to add the above-mentioned high-performance water reducing agent to reduce the amount of mixed water as much as possible while keeping the fluidity. The addition ratio thereof is usually about 1.5 to 0.5% with respect to cement, but it may be appropriately set in consideration of fluidity and workability according to construction conditions.

【００１４】尚、増粘剤としては、メチルセルロース、
ヒドロキシプロピルメチルセルロース等通常用いられて
いるものの中から適宜に選定して使用することができ
る。また、収縮低減剤としては、無機系膨張性混和材、
低級アルコールのアルキレンオキシド付加物、或いは両
者を併用して使用することができ、収縮によるクラック
を減少させることができる。さらに、再乳化粉末樹脂と
しては、エチレン酢酸ビニル系、酢酸ビニル系、酢酸ビ
ニル・ベオバ系、アクリル系等を使用することができ、
接着性を向上する効果を有し、その添加量は予め行う付
着力試験の結果を考慮して適宜に決定される。また、そ
の他にも流動性を向上させるために高炉水砕スラグ粉
末、フライアッシュ等を添加するようにしても良い。As the thickener, methyl cellulose,
It can be appropriately selected and used from commonly used ones such as hydroxypropylmethyl cellulose. Further, as the shrinkage reducing agent, an inorganic expansive admixture,
An alkylene oxide adduct of a lower alcohol, or both can be used in combination, and cracks due to shrinkage can be reduced. Further, as the re-emulsified powder resin, ethylene vinyl acetate-based, vinyl acetate-based, vinyl acetate-Veova-based, acrylic-based, etc. can be used,
It has the effect of improving the adhesiveness, and the addition amount thereof is appropriately determined in consideration of the result of the adhesive strength test conducted in advance. Further, in addition to the above, granulated blast furnace slag powder, fly ash, etc. may be added to improve the fluidity.

【００１５】上記各材料よりなる床用モルタル組成物
を、浮きや剥れがないようにコンクリート表面に十分に
接着させるには、その前工程として、合成樹脂エマルシ
ョンの希釈液或いは合成樹脂エマルジョンを含有するセ
メント系組成物を塗布する。上記合成樹脂エマルジョン
としては、アクリル系、エチレン酢酸ビニル系、ＳＢＲ
ラテックス等を適宜に選択することができる。In order to sufficiently adhere the floor mortar composition composed of the above-mentioned materials to the concrete surface so as not to float or peel off, a synthetic resin emulsion diluent or a synthetic resin emulsion is contained as a pre-step. The cement-based composition is applied. As the synthetic resin emulsion, acrylic type, ethylene vinyl acetate type, SBR
Latex or the like can be appropriately selected.

【００１６】また、雨だたき等により、コンクリート表
面が脆弱である場合には、イソシアネート基１０〜０．
５重量％及び加水分解性シラン基（珪素原子を基準とし
て）７．５〜０．４重量％を含有して平均分子量が５０
０００〜３０００であるポリマーを主成分とする一液硬
化型樹脂組成物を塗着し、コンクリート表面を補強すれ
ば良い。上記一液硬化型樹脂組成物は、分子量が低く、
一般に固形分１７〜１３％で粘度３０〜１０ｃｐｓであ
り、コンクリートの脆弱な部分の微細な空隙へ深く浸透
するので、この状態で硬化してコンクリート表面を補強
することができるのである。この一液硬化型樹脂組成物
は、その後に塗布する前述の床用モルタル組成物或いは
前述の合成樹脂エマルジョンを含有するセメント系組成
物とは極めて高い接着性を示すので、浮きや剥離を生ず
ることがない。また、一液性であるため、二液性のもの
に比べて簡便に取扱うことができる。When the concrete surface is fragile due to raining or the like, isocyanate groups of 10 to 0.
Containing 5% by weight and 7.5 to 0.4% by weight of hydrolyzable silane groups (based on silicon atoms) and having an average molecular weight of 50.
The one-part curable resin composition containing a polymer of 000 to 3000 as a main component may be applied to reinforce the concrete surface. The one-component curable resin composition has a low molecular weight,
Generally, it has a solid content of 17 to 13% and a viscosity of 30 to 10 cps and deeply penetrates into minute voids in a fragile portion of concrete, so that it can be hardened in this state to reinforce the concrete surface. Since this one-pack curable resin composition exhibits extremely high adhesiveness to the above-mentioned floor mortar composition or cement composition containing the above-mentioned synthetic resin emulsion to be applied thereafter, it may cause floating or peeling. There is no. Further, since it is a one-part type, it can be handled more easily than a two-part type.

【００１７】[0017]

【実施例】以下に、本発明の実施例を示す。EXAMPLES Examples of the present invention will be shown below.

【００１８】配合例１〜４，比較配合例１ 下記表１に示す配合組成により床用モルタル組成物を調
合し、以下に示す性能評価試験を行った。Formulation Examples 1 to 4 and Comparative Formulation Example 1 A floor mortar composition was prepared according to the formulation shown in Table 1 below, and the performance evaluation test shown below was conducted.

【００１９】[0019]

【表１】 [Table 1]

【００２０】ひび割れ試験；ＪＩＳ Ａ ６９１５
-1975 に準じ、鋼製のひび割れ試験装置の廻りにテープ
を貼り、試験材料が流れないようにした後、前記配合例
１〜４，比較配合例１の各床用モルタル組成物を厚さ１
０ｍｍになるように流し込んで鏝で平らに成形した。次
に、成形した床モルタルを２０℃，６５％の恒温恒湿室
で養生し、材令２８日で表面のひび割れの有無を目視に
より観察した。結果は表２に示した。Crack test; JIS A 6915
-1975 , a tape was attached around a steel crack tester to prevent the test material from flowing, and then each floor mortar composition of the above-mentioned formulation examples 1 to 4 and comparative formulation example 1 had a thickness of 1
It was poured so as to have a thickness of 0 mm, and flattened with a trowel. Next, the molded floor mortar was aged in a constant temperature and humidity room at 20 ° C. and 65%, and the presence or absence of cracks on the surface was visually observed after 28 days of age. The results are shown in Table 2.

【００２１】曲げ強度試験；ＪＡＳＳ１５Ｍ１０２（既
調合モルタルの品質基準）に準じ、前記配合例１〜４，
比較配合例１の各床用モルタル組成物の供試体を作製
し、材令２８日まで２０℃，６５％の恒温恒湿室で養生
し、島津製作所オートグラフＡＧ−５０００Ｃ（クロス
ヘッド速度；０．５ｍｍ／ｍｉｎ）を用いて曲げ強度を
測定した。結果は表２に示した。Bending strength test: In accordance with JASS15M102 (quality standard of already prepared mortar), the above-mentioned formulation examples 1-4
Specimens of each floor mortar composition of comparative formulation example 1 were prepared and aged in a constant temperature and humidity chamber at 20 ° C and 65% until 28 days of age, and Shimadzu Corporation Autograph AG-5000C (crosshead speed: 0). Bending strength was measured using 0.5 mm / min). The results are shown in Table 2.

【００２２】長さ変化；ＪＩＳ Ａ １１２９（モルタ
ル及びコンクリートの長さ変化率試験方法）のダイヤル
ゲージ方法に準じ、前記配合例１〜４，比較配合例１の
各床用モルタル組成物を、２０℃，８０％の条件で２４
時間養生して脱型した後に基線長を測定した。その後、
２０℃，６５％の恒温恒湿室で２８日間養生させた後、
基線長の長さ変化を測定した。結果は表２に示した。Length change: According to the dial gauge method of JIS A 1129 (Testing method for length change rate of mortar and concrete), 20 mortar compositions for floors of each of the above-mentioned formulation examples 1 to 4 and comparative formulation example 1 were prepared. 24 at 80 ℃
The baseline length was measured after curing for a period of time and demolding. afterwards,
After curing in a constant temperature and humidity room at 20 ° C and 65% for 28 days,
The change in baseline length was measured. The results are shown in Table 2.

【００２３】接着強度；日本建築仕上げ学会「セメント
モルタル塗り用吸水調整材の品質基準（案）」に準じ、
コンクリート基板（３０ｃｍ×３０ｃｍ×厚さ５ｃｍ）
を作製し、材令２８日まで養生し、基板とした。養生の
終了した基板に、厚さ１０ｍｍ，幅１０ｍｍ，長さ３０
ｃｍのプラスチックを貼り、流れないようにした後、富
士川シーレックス（富士川建材工業製）の３倍液（１；
３希釈液）を１５０ｇ／ｍ2 塗布し、２４時間養生した
後、前記配合例１〜４，比較配合例１の各床用モルタル
組成物を流し込んだ後、鏝で平らにした後、材令２８日
まで２０℃，６５％の恒温恒湿室で養生した後、供試体
とした。養生が終了した試験体のモルタル面を４０×４
０ｍｍの寸法で基板に達するまで切込みを入れ、ＪＩＳ
Ａ ６９１６（セメント系下地調整塗材）に規定され
る試験方法に準じ、接着強さ試験をし、５箇所の測定値
の平均を求めた。結果は表２に示した。Adhesive strength; in accordance with the Japan Building Finishing Society "Quality Standards for Water Absorption Control Material for Cement Mortar Coating (Draft)"
Concrete substrate (30 cm x 30 cm x thickness 5 cm)
Was prepared and aged to 28 days to obtain a substrate. The cured substrate has a thickness of 10 mm, a width of 10 mm, and a length of 30.
After applying cm plastic to prevent it from flowing, triple solution of Fujikawa Seelex (manufactured by Fujikawa Kenzai Kogyo) (1;
(3 diluted solution) was applied at 150 g / m 2 and aged for 24 hours, then the floor mortar compositions of the above-mentioned Formulation Examples 1 to 4 and Comparative Formulation Example 1 were poured and flattened with a trowel. After curing in a constant temperature and humidity room at 20 ° C. and 65% for 28 days, it was used as a specimen. 40x4 mortar surface of the specimen after curing
Make a cut with a dimension of 0 mm until it reaches the substrate, and JIS
According to the test method specified in A 6916 (cement-based undercoating coating material), an adhesive strength test was performed, and the average of the measured values at 5 points was obtained. The results are shown in Table 2.

【００２４】[0024]

【表２】 [Table 2]

【００２５】施工例１；マンションの建築工事現場にお
いて、ベランダ、共通通路部分の床補修工事を行った。
まず、富士川シーレックスの３倍液を１５０ｇ／ｍ2 程
度塗布して乾燥させた。その後、前記配合例１の床用モ
ルタル組成物を塗工した。クラック及び浮きの発生は全
く認められなかった。尚、小型接着力試験機（佐久間工
機製）を使用して材令４Ｗ（４週間）の接着強度を測定
したところ、２３．７ｋｇｆ／ｃｍ2 であった。Construction Example 1: Floor repair work was performed on the veranda and the common passage at the condominium construction site.
First, about 150 g / m 2 of a triple solution of Fujikawa Cirex was applied and dried. Then, the floor mortar composition of the above-mentioned formulation example 1 was applied. No cracking or floating was observed. The adhesive strength of a material of age 4W (4 weeks) was measured using a small adhesive strength tester (manufactured by Sakuma Koki Co., Ltd.) and found to be 23.7 kgf / cm 2 .

【００２６】施工例２；流通倉庫の建築工事現場におい
て、雨だたき床面の補修工事を行った。まず、雨だたき
床面を清掃した後、一液硬化型樹脂プライマー（ＥＸ−
１５００：昭和高分子製）を塗布した。次に、フジライ
ト＃１０（富士川建材工業製）２５ｋｇとＳＢＲラテッ
クス（ＫＴ９１８５Ｃ：日本ラテックス加工製）９ｋｇ
と水６ｋｇとからなるセメントペーストを塗布し、その
後、前記配合例２の床用モルタル組成物を塗工した。ク
ラック、及び浮きの発生は全く認められず、強靭な床面
が得られた。尚、小型接着力試験機を使用して材令４Ｗ
（４週間）の接着強度を測定したところ、２７．９ｋｇ
ｆ／ｃｍ2 であった。また、比較のために一液硬化型樹
脂プライマーを塗布しない部分を作製したところ、接着
強度は６．５ｋｇｆ／ｃｍ2 であり、一液硬化型樹脂プ
ライマーの浸透補強効果が認められた。Construction example 2: Repair work on a rain floor was carried out at a construction site of a distribution warehouse. First, after cleaning the rain floor, the one-component curing type resin primer (EX-
1500: Showa High Polymer Co., Ltd. was applied. Next, 25 kg of Fujilite # 10 (manufactured by Fujikawa Kenzai Kogyo) and 9 kg of SBR latex (KT9185C: manufactured by Nippon Latex Co., Ltd.)
And 6 kg of water were applied, and then the floor mortar composition of Formulation Example 2 was applied. No cracking or floating was observed, and a tough floor surface was obtained. In addition, using a small adhesive strength tester, material age 4W
When the adhesive strength (for 4 weeks) was measured, it was 27.9 kg.
It was f / cm 2 . For comparison, when a portion not coated with the one-component curing type resin primer was prepared, the adhesive strength was 6.5 kgf / cm 2 , and the permeation reinforcing effect of the one-component curing type resin primer was confirmed.

【００２７】以上本発明を実施例に基づいて説明した
が、本発明は前記した実施例に限定されるものではな
く、特許請求の範囲に記載した構成を変更しない限りど
のようにでも実施することができる。Although the present invention has been described based on the embodiments, the present invention is not limited to the above-mentioned embodiments, and may be carried out in any manner as long as the configuration described in the claims is not changed. You can

【００２８】[0028]

【発明の効果】以上説明したように本発明の床用モルタ
ル組成物は、簡単に混練りができ、得られる床モルタル
は、下方に嵩比重及び粒径が大きい骨材が分布して上方
に嵩比重及び粒径が小さい骨材が分布することとなるの
で、下方では厚塗りが可能で、厚塗りしてもセメント比
が低いため収縮が小さいものとなり、上方ではセメント
比が高く、平滑な仕上げ面が得られるものとなる。As described above, the floor mortar composition of the present invention can be easily kneaded, and the obtained floor mortar has an aggregate having a large bulk specific gravity and a large particle size distributed in the downward direction. Since the aggregate with a small bulk specific gravity and a small particle size will be distributed, thick coating is possible in the lower part, and even if thick coating is applied, the shrinkage is small due to the low cement ratio, and the upper part has a high cement ratio and a smooth surface. The finished surface is obtained.

【００２９】また、本発明の工法は、従来のように煩雑
な、多数の施工工程を採るものではなく、コンクリート
表面に、合成樹脂エマルションの希釈液或いは合成樹脂
エマルジョンを含有するセメント系組成物を塗布する工
程と、前記床用モルタル組成物を４０〜１ｍｍ程度の厚
みに塗工する工程とを行えば良いので、熟練した技術を
必要とすることがなく、簡便に且つ短時間に施工するこ
とができる。Further, the construction method of the present invention does not take a lot of complicated construction steps as in the prior art, but a concrete composition containing a diluent of a synthetic resin emulsion or a cement composition containing a synthetic resin emulsion on the concrete surface. Since it suffices to perform the step of applying and the step of applying the floor mortar composition to a thickness of about 40 to 1 mm, it is not necessary to have skilled techniques and can be applied simply and in a short time. You can

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明により得られる床用モルタルを模式的に
示した断面図である。FIG. 1 is a cross-sectional view schematically showing a floor mortar obtained according to the present invention.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ //(Ｃ０４Ｂ 28/02 Ｃ０４Ｂ 14:04 Ａ 14:04 14:06 Ｚ 14:06 24:22 Ａ 24:22 24:38 Ａ 24:38） (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 2/00 - 32/02 C04B 40/00 - 40/06 E04F 15/12 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI // (C04B 28/02 C04B 14:04 A 14:04 14:06 Z 14:06 24:22 A 24:22 24:38 (A 24:38) (58) Fields investigated (Int.Cl. 7 , DB name) C04B 2/00-32/02 C04B 40/00-40/06 E04F 15/12

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 嵩比重３．０〜１．５で粒度５．０〜
０．１ｍｍの骨材８０〜１０ｗｔ％と、嵩比重１．５〜
１．０で粒度２．０〜０．１ｍｍの骨材５０〜５ｗｔ％
と、嵩比重１．０〜０．４で粒度１．０〜０．０１ｍｍ
の骨材５０〜１ｗｔ％と、を含有し、必要に応じて高性
能減水剤、増粘剤、収縮低減剤、再乳化粉末状樹脂等を
添加してなることを特徴とする床用モルタル組成物。 1. A bulk specific gravity of 3.0 to 1.5 and a particle size of 5.0 to
80 to 10 wt% of aggregate of 0.1 mm and bulk specific gravity of 1.5 to
50 to 5 wt% of an aggregate having a particle size of 2.0 to 0.1 mm at 1.0
And a bulk specific gravity of 1.0 to 0.4 and a particle size of 1.0 to 0.01 mm
50 to 1 wt% of the aggregate of
Water reducing agent, thickening agent, shrinkage reducing agent, re-emulsifying powdery resin, etc.
A mortar composition for floors, characterized by being added. 【請求項２】 コンクリート表面に、イソシアネート基
１０〜０．５重量％及び加水分解性シラン基（珪素原子
を基準として）７．５〜０．４重量％を含有して平均分
子量が５００００〜３０００であるポリマーを主成分と
する一液硬化型樹脂組成物を塗着した後、必要に応じて
合成樹脂エマルションを含有するセメント系組成物を塗
布し、さらに請求項１に記載の床用モルタル組成物を厚
さ４０〜１ｍｍに塗工することを特徴とする工法。 2. An isocyanate group is provided on the concrete surface.
10 to 0.5% by weight and hydrolyzable silane group (silicon atom
(Based on) the average content of 7.5 to 0.4% by weight
The main component is a polymer having a molecular weight of 50,000 to 3,000.
After applying the one-component curable resin composition,
Applying cementitious composition containing synthetic resin emulsion
And a floor mortar composition according to claim 1
A coating method having a thickness of 40 to 1 mm.
JP15635393A 1993-06-03 1993-06-03 Mortar composition for floor and construction method using the same Expired - Fee Related JP3367996B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15635393A JP3367996B2 (en) 1993-06-03 1993-06-03 Mortar composition for floor and construction method using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15635393A JP3367996B2 (en) 1993-06-03 1993-06-03 Mortar composition for floor and construction method using the same

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Publication Number Publication Date
JPH07172895A JPH07172895A (en) 1995-07-11
JP3367996B2 true JP3367996B2 (en) 2003-01-20

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ID=15625906

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009518564A (en) * 2005-12-06 2009-05-07 スカンスカ スヴェーリェ エービー Concrete floor equipment

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Publication number Priority date Publication date Assignee Title
JP4893083B2 (en) * 2006-04-19 2012-03-07 宇部興産株式会社 Hydraulic composition
JP4985937B2 (en) * 2006-12-27 2012-07-25 太平洋マテリアル株式会社 Polymer cement mortar for floors
JP5594760B2 (en) * 2009-12-28 2014-09-24 太平洋マテリアル株式会社 Hydraulic composition having self-smoothness
CN104150843B (en) * 2014-08-25 2015-11-18 福建巨岸建设工程有限公司 Modified bamboo fiber/polymer thing compound high tenacity concrete and preparation method thereof
IT202100001646A1 (en) * 2021-01-27 2022-07-27 Ferrari Granulati S R L BINDER PASTE AND DOUGH TO CREATE A FLOORING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009518564A (en) * 2005-12-06 2009-05-07 スカンスカ スヴェーリェ エービー Concrete floor equipment

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