JP2017114735A - Mortar for finishing - Google Patents
Mortar for finishing Download PDFInfo
- Publication number
- JP2017114735A JP2017114735A JP2015253261A JP2015253261A JP2017114735A JP 2017114735 A JP2017114735 A JP 2017114735A JP 2015253261 A JP2015253261 A JP 2015253261A JP 2015253261 A JP2015253261 A JP 2015253261A JP 2017114735 A JP2017114735 A JP 2017114735A
- Authority
- JP
- Japan
- Prior art keywords
- mass
- parts
- finishing
- mortar
- finishing mortar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
本発明は、建築物の壁等に使用されるセメント系の仕上用モルタルに関する。 The present invention relates to a cement-based finishing mortar used for building walls and the like.
近年、主に戸建て住宅の外壁は、施工が容易で耐久性にも優れたサイディングを用い、樹脂系の仕上剤を施工するケースが多い。一方、セメント系仕上剤は樹脂系仕上剤に比べ、紫外線による劣化が少ない反面、ひび割れと汚れにより美観の維持が容易ではない。そのため、通常は、表面に塗料を塗り、防汚性を付与させているが、紫外線劣化は起こる。セメントモルタルの耐久性改善策として、ポリマーとポゾラン物質を混和使用するもの（例えば、特許文献１参照）やポリマー中空粒子と粉末樹脂を併用するもの（例えば、特許文献２参照）が提案されている。また、ひび割れ対策としてポリマー、膨張材、収縮低減剤、繊維を混和使用する方策も検討されている。（例えば、特許文献３参照。）更に、耐久性改善と防汚対策を兼ねたものとしてポリマーとメタカオリンと吸湿性粘土鉱物を混和使用したもの（例えば、特許文献４参照）も提案されている。 In recent years, the exterior walls of detached houses are often constructed with resin-based finishing agents using siding that is easy to construct and excellent in durability. On the other hand, cement-based finishing agents are less deteriorated by ultraviolet rays than resin-based finishing agents, but are not easy to maintain aesthetics due to cracks and dirt. For this reason, normally, paint is applied to the surface to impart antifouling properties, but ultraviolet degradation occurs. As measures for improving the durability of cement mortar, those using a mixture of a polymer and a pozzolanic substance (for example, see Patent Document 1) and those using a combination of polymer hollow particles and a powder resin (for example, see Patent Document 2) have been proposed. . In addition, as a countermeasure against cracks, a method of mixing and using a polymer, an expansion material, a shrinkage reducing agent, and a fiber has been studied. (For example, refer to Patent Document 3.) Further, a polymer (meta-kaolin) and a hygroscopic clay mineral that are used as a combination of durability improvement and antifouling measures (for example, see Patent Document 4) has also been proposed.
しかるに、特許文献１〜３記載のモルタルや水硬性組成物においては、仕上がりの色が制限されると共に、表面形状や模様等の造形性や耐久性の点でも十分満足できるものではなかった。また、付着耐久性と造形性で大きく改善された特許文献４記載の仕上材においては、仕上り面の美観上必要とされる、造形性、防汚性、白色化、ひび割れ抵抗性のうち、微細なひび割れ発生等の抑制に関しては十分な効果が確認されていない。さらに、白色そのものの呈色化には優れるものの、一方でこれをベースとして任意の着色を行おうとすると、白色が勝り過ぎることがあり、所望の発色が現れ難いといった問題もあった。 However, in the mortars and hydraulic compositions described in Patent Documents 1 to 3, the finished color is limited, and the shape and durability such as the surface shape and pattern are not satisfactory. In addition, in the finishing material described in Patent Document 4, which is greatly improved in adhesion durability and formability, among the formability, antifouling property, whitening, and crack resistance required for the aesthetics of the finished surface, A sufficient effect has not been confirmed with respect to the suppression of cracks and the like. Furthermore, although it is excellent in coloration of white itself, on the other hand, if an arbitrary coloring is performed based on the white color, there is a problem that the white color may prevail and a desired color development is difficult to appear.
したがって、本発明の課題は、良好な耐久性と施工性を具備しつつ、さらなる仕上り面の美観上の改善を行うものであり、良好な防汚性と造形面での多様性に加えて、仕上り面のひび割れ発生を極限まで低減するとともに、鮮明な白色が得られ、また着色にも適して仕上がり色の発色性にも優れるセメント系の仕上用モルタルを提供することにある。 Therefore, the object of the present invention is to improve the aesthetics of the finished surface while having good durability and workability, in addition to good antifouling properties and diversity in the molding surface, An object of the present invention is to provide a cement-based finishing mortar that reduces the occurrence of cracks on the finished surface to the utmost, provides a clear white color, is suitable for coloring, and is excellent in finished color development.
そこで本発明者は、前記課題を解決すべく検討した結果、セメントに白色セメントを採用し、色調の明度に加えて彩度を特定し、６００μｍ未満の粒径の含有量を減少させた粒度分布を有する普通細骨材を用い、同様に色調を特定した吸湿性粘土鉱物、メタカオリン及び特定のポリマーを用い、これらを特定の割合で配合すれば、鮮明な白色を呈するも、着色にも適するため仕上がり色の自由度を拡げることもでき、且つひび割れ抵抗性を大幅に高めることができ、仕上がり面のさらなる美観の向上がなされた良好な施工性の仕上用モルタルが得られることを見出し、本発明を完成した。 Therefore, the present inventors have studied to solve the above problems, and as a result, adopted white cement as the cement, specified the chroma in addition to the lightness of the color tone, and reduced the content of the particle size of less than 600 μm. Using ordinary fine aggregates with the same color, and using hygroscopic clay minerals, metakaolin and specific polymers that have been specified in the same manner, and blending them in specific proportions, they exhibit a clear white color but are also suitable for coloring The present invention has found that a finishing mortar with good workability can be obtained in which the degree of freedom of the finished color can be expanded and the crack resistance can be greatly enhanced, and the finished surface is further improved in appearance. Was completed.
すなわち、本発明は、次の［１］〜［６］の仕上用モルタル及び［７］の仕上用着色モルタルを提供するものである。 That is, the present invention provides the following finishing mortars [1] to [6] and [7] finishing mortar.
［１］（Ａ）白色セメント１００質量部、（Ｂ）粒径６００μｍ以上２５００μｍ未満が３９〜５０質量％、粒径３００μｍ以上６００μｍ未満が２３〜２９質量％、粒径３００μｍ未満が２５〜３４質量％の粒度で構成されるマンセルカラーシステムの彩度０．５〜１．０、明度８．５〜９．５の普通細骨材２３０〜３６０質量部、（Ｃ）メタカオリン２〜４質量部、（Ｄ）マンセルカラーシステムの彩度０．１〜１．０、明度８〜９．５の吸湿性粘土鉱物０．３〜２．５質量部、（Ｅ）シラン系撥水剤０．１〜０．６質量部、並びに（Ｆ）ポリアクリル酸エステル、スチレンブタジエン共重合体及びエチレン酢酸ビニル共重合体から選ばれる少なくとも１種を有効成分とするポリマーディスパージョン及び／又は再乳化形粉末樹脂を固形分換算で２〜８質量部含有する仕上用モルタル。
［２］前記(Ｂ)普通細骨材以外の細骨材の含有量が、前記（Ｂ）普通細骨材の含有量１００質量部に対し、５質量部以下である前記［１］の仕上用モルタル。
［３］さらに、（Ｇ）生石灰系膨張材及びエトリンガイト系膨張材から選ばれる少なくとも１種を含む前記［１］又は［２］の仕上用モルタル。
［４］さらに、（Ｈ）セルロース系保水剤を含有する前記［１］〜［３］何れかの仕上用モルタル。
［５］さらに、（Ｉ）消泡剤を含有する前記［１］〜［４］何れかの仕上用モルタル。
［６］閉口空隙を有する軽量細骨材を含有しない前記［１］〜［５］何れかの仕上用モルタル。
［７］前記［１］〜［６］何れかの仕上用モルタルに対し、外割で着色材を加えてなる仕上用着色モルタル。
[1] (A) 100 parts by mass of white cement, (B) 39-50% by mass of particle size 600 μm or more and less than 2500 μm, 23-29% by mass of particle size 300 μm or more and less than 600 μm, 25-34 mass of particle size less than 300 μm % Munsell color system composed of 0.5 to 1.0, ordinary fine aggregate 230 to 360 parts by mass of lightness 8.5 to 9.5, (C) 2 to 4 parts by mass of metakaolin, (D) Munsell color system chroma 0.1 to 1.0, lightness 8 to 9.5 hygroscopic clay mineral 0.3 to 2.5 parts by mass, (E) silane water repellent 0.1 to 0.6 part by mass, and (F) a polymer dispersion and / or a re-emulsifying powder resin containing, as an active ingredient, at least one selected from a polyacrylic acid ester, a styrene butadiene copolymer and an ethylene vinyl acetate copolymer Solid fractionation Finishing mortar containing 2 to 8 parts by mass.
[2] Finishing of said [1] whose content of fine aggregates other than said (B) normal fine aggregate is 5 mass parts or less with respect to 100 mass parts of said (B) normal fine aggregate content For mortar.
[3] The finishing mortar according to [1] or [2], further including (G) at least one selected from quicklime-based expansion materials and ettringite-based expansion materials.
[4] The finishing mortar according to any one of [1] to [3], further comprising (H) a cellulosic water retention agent.
[5] The finishing mortar according to any one of [1] to [4], further comprising (I) an antifoaming agent.
[6] The finishing mortar according to any one of [1] to [5], which does not contain a lightweight fine aggregate having a closed void.
[7] A colored mortar for finishing, which is obtained by adding a coloring material to the finishing mortar according to any one of [1] to [6].
本発明により、多様な造形性に適し、良好な防汚性、優れたひび割れ抵抗性及び着色の自由度、発色性を阻害しない鮮明な白色の仕上がり面を具備した美観に卓越した耐久性の良好な仕上用モルタルが得られる。 According to the present invention, suitable for various formability, good antifouling property, excellent cracking resistance and freedom of coloring, and excellent durability with a beautiful white finish with a clear white finish that does not impair color development Mortar for finishing can be obtained.
本発明の仕上用モルタルには、結合相形成成分、硬化成分として（Ａ）白色セメントを含有する。白色セメントを用いることで白色度が向上し、また白色以外の着色も可能になる。白色セメントとしては、市販品が使用可能である。好ましくは、不純物含有量が少ない白色セメントほど白色度が高いので良く、特にＦｅ2Ｏ3含有量を大凡０．２％以下に調整したものが良い。具体的には、山陽白色セメント株式界社製「ホワイトセメント」等が例示される。 The finishing mortar of the present invention contains (A) white cement as a binder phase forming component and a curing component. By using white cement, the whiteness is improved and coloring other than white is possible. A commercially available product can be used as the white cement. Preferably, a white cement with a lower impurity content has higher whiteness, and in particular, one with an Fe 2 O 3 content adjusted to approximately 0.2% or less is preferable. Specific examples include “White Cement” manufactured by Sanyo White Cement Co., Ltd.
以下で述べる本発明の仕上用モルタルの配合成分の含有量は、特記無い限り、前記白色セメントの仕上用モルタル中の含有量１００質量部に対する値である。 Unless otherwise specified, the content of the blending component of the finishing mortar of the present invention described below is a value with respect to 100 parts by mass of the white cement in the finishing mortar.
本発明に用いられる（Ｂ）普通細骨材は、粒径６００μｍ以上２５００μｍ未満が３９〜５０質量％、粒径３００μｍ以上６００μｍ未満が２３〜２９質量％、粒径３００μｍ未満が２５〜３４質量％の粒度で構成される。普通細骨材の粒度分布をこの範囲にすることによって、特に粒径３００μｍ以上６００μｍ未満のもの及び粒径３００μｍ未満のものの含有量を低減することによって、施工性が良好で、仕上がりパターンの多様性に適応でき、ひび割れ抵抗性も向上させることができる。 The (B) ordinary fine aggregate used in the present invention has a particle size of 600 to 2500 μm, 39 to 50% by mass, a particle size of 300 to 600 μm, 23 to 29% by mass, and a particle size of less than 300 μm to 25 to 34% by mass. It is composed of the following granularity. By making the particle size distribution of ordinary fine aggregates within this range, especially by reducing the content of particles with a particle size of 300 μm or more and less than 600 μm and particles with a particle size of less than 300 μm, workability is good and the variety of finished patterns And can also improve the resistance to cracking.
粒径６００μｍ以上２５００μｍ未満が５０質量％を超えると、施工方法と造形面での仕上がりパターンが限定され、仕上がりパターンの多様性に優れた仕上材が得られない。粒径６００μｍ以上２５００μｍ未満が３９質量％未満であると、水セメント比が大きくなるとともに適正な施工厚さが得られず、仕上がりパターンが意匠性の低いものになる。また、水セメント比の増加に伴い、乾燥収縮も大きくなり、ひび割れの発生する虞がある。粒径６００μｍ以上２５００μｍ未満は、４２〜５０質量％が好ましく、４３〜５０質量％がより好ましい。
また、粒径３００μｍ未満が３４質量％を超えると、他の粒度範囲の普通細骨材の割合が少なくなるので、適切な施工厚さが得難くなる上に仕上がりパターンが限定され、水セメント比が増加するため乾燥収縮が大きくなってひび割れ発生の虞がある。粒径３００μｍ未満が２５質量％未満では、比較的粗大な普通細骨材が多くなるため、緻密性が低くなり耐久性が低下し易くなる他、仕上げパターンが粗くなる虞がある。粒径３００μｍ未満は、２５〜３３質量％が好ましく、２５〜３０質量％がより好ましい。
また、粒径３００μｍ以上６００μｍ未満が２９質量％を超えると、他の粒度範囲の普通細骨材の割合が少なくなるので、仕上がりパターンが限定され、造形面での多様性が得られず、意匠性が低いものになる。また、粒径３００μｍ以上６００μｍ未満が２３質量％未満であると、仕上がり面に斑が生じ易く、鏝作業性や造形性に難が生じ易くなるため好ましくない。粒径３００μｍ以上６００μｍ未満は、２４〜２９質量％が好ましく、２４〜２８質量％がより好ましい。
If the particle size is 600 μm or more and less than 2500 μm exceeds 50% by mass, the finish pattern on the construction method and the modeling surface is limited, and a finish with excellent finish pattern diversity cannot be obtained. When the particle size is 600 μm or more and less than 2500 μm is less than 39% by mass, the water-cement ratio increases and an appropriate construction thickness cannot be obtained, resulting in a low design pattern. In addition, as the water-cement ratio increases, drying shrinkage also increases and cracks may occur. 42-50 mass% is preferable and, as for a particle size of 600 micrometers or more and less than 2500 micrometers, 43-50 mass% is more preferable.
Also, if the particle size is less than 300 μm and exceeds 34% by mass, the proportion of ordinary fine aggregates in other particle size ranges decreases, so it is difficult to obtain an appropriate construction thickness and the finished pattern is limited, and the water cement ratio This increases the drying shrinkage and may cause cracks. When the particle size is less than 300 μm and less than 25% by mass, relatively coarse ordinary fine aggregates increase, so that the denseness is lowered and durability tends to be lowered, and the finished pattern may be roughened. The particle size of less than 300 μm is preferably 25 to 33% by mass, and more preferably 25 to 30% by mass.
Further, if the particle size of 300 μm or more and less than 600 μm exceeds 29% by mass, the proportion of ordinary fine aggregates in other particle size ranges decreases, so that the finished pattern is limited, and diversity on the molding surface cannot be obtained. It becomes low in nature. Further, if the particle size is 300 μm or more and less than 600 μm is less than 23% by mass, it is not preferable because spots are likely to occur on the finished surface, and difficulty in scissors workability and formability is likely to occur. 24-29 mass% is preferable and, as for a particle size of 300 micrometers or more and less than 600 micrometers, 24-28 mass% is more preferable.
本発明に用いられる（Ｂ）普通細骨材は、前記粒度構成とすることに加えて、マンセルカラーシステムの彩度０．５〜１．０、明度８．５〜９．５である。マンセルカラーシステムの彩度０．５未満では、着色の際に所望の発色が現れ難くなることがあるため好ましくない。また、彩度１．０を超えると白色セメントとの色差により細骨材が目立ち、均一な色の仕上がり面が得られないため好ましくない。彩度は、０．５〜９．０がより好ましい。
また、マンセルカラーシステムの明度８．５未満では、白色セメントとの色調の差から、普通細骨材がモルタル中で目立ち、均一な色調の仕上げ面が得難くなるので好ましくない。また、明度９．５を超えると、マンセルカラーシステムの色見本帳の記載限界を超えるため好ましくない。明度は、８．６〜９．３が好ましい。
The (B) ordinary fine aggregate used in the present invention has a Munsell color system with a saturation of 0.5 to 1.0 and a lightness of 8.5 to 9.5 in addition to the above-mentioned particle size configuration. If the saturation of the Munsell color system is less than 0.5, it is not preferable because a desired color may not appear easily during coloring. On the other hand, if the saturation exceeds 1.0, the fine aggregate is conspicuous due to the color difference from the white cement, and a finished surface with a uniform color cannot be obtained. The saturation is more preferably 0.5 to 9.0.
Also, if the brightness of the Munsell color system is less than 8.5, the fine aggregate is usually noticeable in the mortar due to the difference in color tone with the white cement, and it is difficult to obtain a finished surface with a uniform color tone. Moreover, since it exceeds the description limit of the color sample book of a Munsell color system when the brightness exceeds 9.5, it is unpreferable. The lightness is preferably 8.6 to 9.3.
また、前記のようなマンセルカラーシステムの彩度、明度の普通細骨材が得易いことから、さらには良好な耐久性の施工物が得られることから、前記普通骨材は石灰石であることが好ましく、より好ましくは寒水石（白色石灰石）が良いが、前記普通骨材は石灰石骨材に限定されるものではない。 In addition, it is easy to obtain ordinary fine aggregates with the saturation and lightness of the Munsell color system as described above, and further, since a construction with good durability can be obtained, the normal aggregate may be limestone. Preferably, cold water stone (white limestone) is preferred, but the ordinary aggregate is not limited to limestone aggregate.
また、前記のようなマンセルカラーシステムの色調及び粒度構成を具備した(Ｂ)普通細骨材以外の普通細骨材も本発明の仕上用モルタルでは含有することができるが、発色やひび割れ抵抗性の阻害要因となる虞があることから、前記(Ｂ)普通細骨材の含有量１００質量部に対し、５質量部以下（０質量部を含む）の含有量にすることが好ましく、さらに３質量部以下（０質量部を含む）の含有量にすることがより好ましい。また、普通細骨材以外の骨材、例えば軽量骨材、特にパーライト等の発泡軽量骨材、ガラス中空粒子、樹脂中空粒子などの閉口空隙を含むことで軽量化をはかった軽量細骨材の使用は、施工時に破損し易いため、細かい仕上面模様を造形するには難があり、また強度発現性の低い施工物となって耐久性も劣るので、本発明の仕上用モルタルの細骨材にはこのような軽量骨材は含有しないことが望ましい。 Further, (B) ordinary fine aggregates other than ordinary fine aggregates having the above-mentioned Munsell color system color tone and particle size constitution can also be contained in the finishing mortar of the present invention. Therefore, the content is preferably 5 parts by mass or less (including 0 parts by mass) with respect to 100 parts by mass of the (B) ordinary fine aggregate. It is more preferable to make the content not more than part by mass (including 0 part by mass). In addition, aggregates other than ordinary fine aggregates, such as lightweight aggregates, in particular foamed lightweight aggregates such as perlite, glass hollow particles, and closed fine voids such as resin hollow particles, are used to reduce the weight of lightweight fine aggregates. Use is easy to break at the time of construction, so it is difficult to form a fine finished surface pattern, and it becomes a construction with low strength development and inferior in durability, so the fine aggregate of the finishing mortar of the present invention It is desirable not to contain such a lightweight aggregate.
前記（Ｂ）普通細骨材の本発明の仕上用モルタル中の含有量は、（Ａ）白色セメント１００質量部に対し２３０〜３６０質量部とし、好ましくは、２６０〜３００質量部とする。前記（Ｂ）普通細骨材の含有量が２３０質量部未満では、白色セメント量の割合が大きくなり過ぎて粘性が増し、施工性が低下する。そのため、良好な仕上がりパターンが出せず、さらに適正な施工厚さも得られない。また、水セメント比が増加し、乾燥収縮が大きくなってひび割れ発生の虞もある。また、含有量が３６０質量部を超えると鏝作業性が低下する。また白色セメントの含有割合が低下することになるので仕上がりパターンの輪郭が不明瞭になる等の造形性低下をもたらす。 The content of the (B) ordinary fine aggregate in the finishing mortar of the present invention is 230 to 360 parts by mass, preferably 260 to 300 parts by mass with respect to 100 parts by mass of the (A) white cement. When the content of the (B) ordinary fine aggregate is less than 230 parts by mass, the proportion of the white cement amount becomes too large, the viscosity increases, and the workability decreases. For this reason, a good finished pattern cannot be obtained, and an appropriate construction thickness cannot be obtained. In addition, the water-cement ratio increases, drying shrinkage increases, and cracking may occur. Moreover, when content exceeds 360 mass parts, dredging workability will fall. Moreover, since the content rate of white cement will fall, the formability fall, such as the outline of a finished pattern becoming unclear, is brought about.
本発明の仕上用モルタルは、（Ｃ）メタカオリンを含有する。メタカオリンは、本発明では緻密性を高めることに寄与し、施工後のモルタルにしまりを与え、施工性と耐久性を向上することができる。メタカオリンは他のポゾラン反応性物質と比べると白色性が高く、かつ仕上げ色の阻害化を起こさずに高密化の達成が可能である。他のポゾラン反応性物質を使用すると仕上げ色の阻害化を起こし易い。 The finishing mortar of the present invention contains (C) metakaolin. Metakaolin contributes to increasing the density in the present invention, gives a mortar after construction, and improves workability and durability. Metakaolin has a higher whiteness than other pozzolanic reactive substances, and can achieve high density without inhibiting the finished color. When other pozzolanic reactive substances are used, the finish color tends to be inhibited.
（Ｃ）メタカオリンは不純物含有量の少ないものの方が白色性が高いので使用に好適であり、より好ましくは鏝作業性の改善効果があることからさらに比表面積１００００ｃｍ2／ｇ以上の微粉の使用が良い。メタカオリンの本発明の仕上用モルタル中の含有量は、（Ａ）白色セメント質量部に対し２〜４質量部とする。メタカオリン含有量２質量部未満では、高密化が得られないことがあるので好ましくなく、４質量部を超える含有量では反応に必要な配合水量を増加させる必要があり、水セメント比が増えて強度低下を起こすので好ましくない。より好ましいカオリンの含有量は２．２〜３．８質量部である。 (C) Metakaolin having a lower impurity content is suitable for use because it has a higher whiteness, and more preferably has an effect of improving the workability of dredging. Therefore, the use of fine powder having a specific surface area of 10,000 cm 2 / g or more is more preferable. good. The content of the metakaolin in the finishing mortar of the present invention is 2 to 4 parts by mass with respect to (A) white cement part by mass. If the content of metakaolin is less than 2 parts by mass, high densification may not be obtained, and this is not preferable. If the content exceeds 4 parts by mass, it is necessary to increase the amount of water required for the reaction, and the water cement ratio increases and strength increases. It is not preferable because it causes a decrease. A more preferable content of kaolin is 2.2 to 3.8 parts by mass.
本発明の仕上用モルタルは、（Ｄ）吸湿性粘土鉱物を含有する。吸湿性粘土鉱物は、水を吸収できる粘土鉱物であり、水分の含有で、施工物に良好な流動性と施工時の付着性改善作用があり、施工性向上に大きく寄与する。このような粘度鉱物としては、セピオライト、ベントナイト、ゼオライト、アタパルジャイトが挙げられる。また、含有使用する吸湿性粘土鉱物は、マンセルカラーシステムの彩度０．５〜１．０、明度８．５〜９．５であることを必須とする。マンセルカラーシステムの彩度０．５未満では、彩度が低すぎて、純白色が得難くなるため好ましくなく、彩度１．０を超えると白色セメントとの色差が広がり過ぎて、含有する吸湿性粘土鉱物が色斑となって見られることがあるため好ましくない。
また、マンセルカラーシステムの明度８．５未満では、白色セメントとの色差が拡大し、普通細骨材がモルタル中で目立ち、均一な色調の仕上げ面が得難くなるので好ましくない。また、明度９．５はマンセルカラーシステムそのものの実質的な上限である。
このようなマンセルカラーシステムの値とすることで、鮮明な白色を呈することに寄与する一方、着色化を行う際に、所望の発色の阻害化になることを抑制できる。前記マンセルカラーシステムの値に該当する吸湿性粘土鉱物であれば、化学成分や組成等は特に制限されず、何れのものでも含有使用できる。吸湿性粘土鉱物の好ましい彩度は０．６〜０．９であり、明度は８．５〜９．３である。
The finishing mortar of the present invention contains (D) a hygroscopic clay mineral. The hygroscopic clay mineral is a clay mineral that can absorb water. The moisture content of the hygroscopic clay mineral has good fluidity and improved adhesion during construction, and greatly contributes to improvement of workability. Examples of such a viscous mineral include sepiolite, bentonite, zeolite, and attapulgite. Moreover, it is essential that the hygroscopic clay mineral to be used has a saturation of 0.5 to 1.0 and a brightness of 8.5 to 9.5 of the Munsell color system. If the saturation of the Munsell color system is less than 0.5, the saturation is too low and it is difficult to obtain a pure white color. This is not preferable, and if the saturation exceeds 1.0, the color difference from the white cement is excessively widened. It is not preferred because the clay mineral can be seen as colored spots.
Also, if the Munsell color system has a lightness of less than 8.5, the color difference from white cement is enlarged, ordinary fine aggregates are conspicuous in the mortar, and it is difficult to obtain a finished surface with a uniform color tone. Lightness 9.5 is a substantial upper limit of the Munsell color system itself.
By setting the value of such a Munsell color system, while contributing to exhibiting a clear white color, it is possible to suppress inhibition of desired color development when performing coloring. If it is a hygroscopic clay mineral corresponding to the value of the Munsell color system, the chemical component, composition, etc. are not particularly limited, and any of them can be used. The preferred saturation of the hygroscopic clay mineral is 0.6 to 0.9, and the lightness is 8.5 to 9.3.
（Ｄ）吸湿性粘土鉱物の本発明の仕上用モルタル中の含有量は、（Ａ）白色セメント１００質量部に対して０．３〜２．５質量部とする。吸湿性粘土鉱物含有量０．３質量部未満では、鏝作業性等に関する施工性改善効果が得られないことがあるので好ましくなく、２．５質量部を超える含有量では粘性が増して混練性や塗り施工性に支障が生じることがあり、これを解消するため水量を増やすと強度低下やひび割れ発生が起き易くなり好ましくない。（Ｄ）吸湿性粘土鉱物の好ましい含有量は０．５〜２．５質量部であり、より好ましくは０．５〜２．０質量部である。 (D) Content in the finishing mortar of this invention of a hygroscopic clay mineral shall be 0.3-2.5 mass parts with respect to 100 mass parts of (A) white cement. If the hygroscopic clay mineral content is less than 0.3 parts by mass, the workability improvement effect on dredging workability and the like may not be obtained, and if the content exceeds 2.5 parts by mass, the viscosity increases and the kneadability is increased. In order to solve this problem, increasing the amount of water is not preferable because strength reduction and cracking are likely to occur. (D) The preferable content of the hygroscopic clay mineral is 0.5 to 2.5 parts by mass, and more preferably 0.5 to 2.0 parts by mass.
本発明の仕上用モルタルは、（Ｅ）シラン系撥水剤を含む。シラン系撥水剤は、仕上用モルタルに、防汚性、耐凍害性、耐塩害性を付与するのに有用である。本発明に使用されるシラン系撥水剤としては、セメントモルタルに混和すると高アルカリ条件下で反応性のシラノールとなるシラン化合物が好ましい。例えば、有機シラン、ポリシラン等である。反応性シラノールは、シラノール基間の架橋や無機化合物との反応により表面が疎水性に変性される。そのため、シラン系撥水剤は混練性が良く、本発明の仕上用モルタルは硬化後優れた撥水性を発揮する。 The finishing mortar of the present invention contains (E) a silane water repellent. Silane-based water repellents are useful for imparting antifouling properties, frost damage resistance, and salt damage resistance to finishing mortars. The silane-based water repellent used in the present invention is preferably a silane compound that becomes reactive silanol under high alkaline conditions when mixed with cement mortar. For example, organic silane, polysilane and the like. The surface of reactive silanol is modified to be hydrophobic by crosslinking between silanol groups or reaction with an inorganic compound. Therefore, the silane water repellent has good kneadability, and the finishing mortar of the present invention exhibits excellent water repellency after curing.
本発明の仕上用モルタルにおける（Ｅ）シラン系撥水剤の含有量は、（Ａ）白色セメント１００質量部に対し０．１〜０．６質量部とする。シラン系撥水剤含有量０．１質量部未満では、適正な撥水性が得られず、含有効果が無いので好ましくなく、０．６質量部を超える含有量では撥水効果の改善は殆ど見られず、高価なシラン系撥水剤の使用量が増えるだけなので不経済であり好ましくない。（Ｅ）シラン系撥水剤の好ましい含有量は、０．２〜０．６質量部であり、さらに好ましくは０．２〜０．５質量部である。 The content of the (E) silane water repellent in the finishing mortar of the present invention is 0.1 to 0.6 parts by mass with respect to 100 parts by mass of (A) white cement. If the silane water repellent content is less than 0.1 parts by mass, it is not preferable because appropriate water repellency cannot be obtained and there is no inclusion effect. If the content exceeds 0.6 parts by mass, the improvement of the water repellency effect is hardly observed. This is not preferable because it only increases the amount of expensive silane water repellent used. (E) Preferable content of a silane type water repellent is 0.2-0.6 mass part, More preferably, it is 0.2-0.5 mass part.
本発明の仕上用モルタルは、（Ｆ）ポリアクリル酸エステル、スチレンブタジエン共重合体（ＳＢＲ）及びエチレン酢酸ビニル共重合体（ＥＶＡ）から選ばれる少なくとも１種を有効成分とするポリマーディスパージョン及び／又は再乳化形粉末樹脂を含有する。このようなポリマーディスパージョンや再乳化形粉末樹脂をシラン系撥水剤やメタカオリンと併用することにより、仕上用モルタルのひび割れ低減化や下地との付着性向上に寄与する他、下地に対する変形追従性、耐塩害性や中性化阻止等の耐久性向上にも寄与する。 The finishing mortar of the present invention comprises (F) a polymer dispersion containing at least one selected from a polyacrylic acid ester, a styrene butadiene copolymer (SBR), and an ethylene vinyl acetate copolymer (EVA) and / or Alternatively, it contains a re-emulsifying powder resin. By using such polymer dispersions and re-emulsifying powder resins in combination with silane-based water repellents and metakaolin, it contributes to reducing cracking in finishing mortar and improving adhesion to the substrate, as well as deformation followability to the substrate. It also contributes to improving durability such as salt damage resistance and neutralization prevention.
本発明の仕上用モルタルにおける（Ｆ）ポリアクリル酸エステル、スチレンブタジエン共重合体及びエチレン酢酸ビニル共重合体から選ばれる少なくとも１種を有効成分とするポリマーディスパージョン及び／又は再乳化形粉末樹脂の含有量は、（Ａ）白色セメント１００質量部に対して固形分換算の合計で２〜８質量部とする。前記含有量が２質量部未満では、含有効果が殆ど得られないので好ましくなく、また８質量部を超える含有量では、粘性が上がり過ぎて施工性が低下するので好ましくない。 (F) Polymer dispersion and / or re-emulsifying powder resin containing at least one selected from polyacrylic acid ester, styrene butadiene copolymer and ethylene vinyl acetate copolymer in the finishing mortar of the present invention. Content is made into 2-8 mass parts in total of solid content conversion with respect to 100 mass parts of (A) white cement. If the content is less than 2 parts by mass, the content effect is hardly obtained, which is not preferable. On the other hand, if the content exceeds 8 parts by mass, the viscosity is excessively increased and the workability is lowered.
本発明の仕上用モルタルは、前記（Ａ）〜（Ｆ）の成分の他に、更に（Ｇ）生石灰系膨張材及びエトリンガイト系膨張材から選ばれる少なくとも１種を含むものであることが好ましい。生石灰系膨張材又は／及びエトリンガイト系膨張材を含むことにより、硬化初期段階における収縮を抑制することができ、ひび割れ発生の防止や寸法安定性に寄与する。また、前記（Ｅ）撥水剤や前記（Ｆ）ポリマーディスパージョン及び／又は再乳化形粉末樹脂との併用により、水分散逸や不要な吸湿を防止する作用も加わり、長期間に渡りひび割れ抵抗性を持続可能となる。生石灰系膨張材は、生石灰を有効成分とし、その水和反応によって水酸化カルシウム生成に伴い体積の膨張が見られるものである。また、エトリンガイト系膨張材はカルシウムサルフォアルミネートを有効成分とし、水和反応でエトリンガイトが形成されることによって、体積膨張するものである。これらの膨張材は特に限定されたものを用いる必要はなく、例えば何れの市販品でも使用することができ、両者を併用することもできる。 In addition to the components (A) to (F), the finishing mortar of the present invention preferably further contains at least one selected from (G) quicklime-based expansion material and ettringite-based expansion material. By including quicklime-based expansion material and / or ettringite-based expansion material, shrinkage at the initial stage of curing can be suppressed, which contributes to prevention of crack generation and dimensional stability. In addition, combined use with the (E) water repellent, the (F) polymer dispersion and / or the re-emulsified powder resin also has the effect of preventing water dispersion and unnecessary moisture absorption, and is resistant to cracking over a long period of time. Be sustainable. The quicklime-based expansion material has quicklime as an active ingredient, and the expansion of the volume is observed as calcium hydroxide is generated by the hydration reaction. The ettringite-based expansion material contains calcium sulfoaluminate as an active ingredient, and expands in volume when ettringite is formed by a hydration reaction. These inflatable materials do not need to be particularly limited. For example, any commercially available product can be used, or both can be used in combination.
本発明の仕上用モルタルにおける（Ｇ）生石灰系膨張材又は／及びエトリンガイト系膨張材の含有量は（Ａ）白色セメント１００質量部に対して２〜６質量部が好ましい。より好ましくは３．３〜５．５質量部である。生石灰系膨張材又は／及びエトリンガイト系の膨張材の含有量を２〜６質量部とすることによって、膨張材の寄与に関わる前記効果を十分奏することができる。 In the finishing mortar of the present invention, the content of (G) quicklime-based expansion material and / or ettringite-based expansion material is preferably 2 to 6 parts by mass with respect to 100 parts by mass of (A) white cement. More preferably, it is 3.3-5.5 mass parts. By setting the content of the quicklime-based expansion material and / or the ettringite-based expansion material to 2 to 6 parts by mass, the effects relating to the contribution of the expansion material can be sufficiently achieved.
また、本発明の仕上用モルタルは、更に（Ｈ）セルロース系保水剤を含むことが好ましい。セルロース系保水剤はセルロース誘導体を有効成分とし、常温で水溶性のものなら何れのものでも使用できる。具体的には、例えばメチルセルロース、カルボキシメチルセルロース、ヒドロキシプロピルメチルセルロース、ヒドロキシエチルセルロース、ヒドロキシエチルメチルセルロース、ヒドロキシプロピルセルロース、セルロース硫酸エステル等を挙げることができる。これらの中でも、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又はヒドロキシエチルメチルセルロースを有効成分とする保水剤がより好ましい。セルロース系保水剤の含有により施工性、特に左官施工に適した状態の仕上用モルタルを得ることができ、また施工初期の急激な乾燥化の抑制や硬化性改善にも寄与する。 Moreover, it is preferable that the finishing mortar of the present invention further contains (H) a cellulose-based water retention agent. Any cellulose-based water-retaining agent can be used as long as it has a cellulose derivative as an active ingredient and is water-soluble at room temperature. Specific examples include methylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, and cellulose sulfate. Among these, a water retention agent containing methylcellulose, hydroxypropylmethylcellulose or hydroxyethylmethylcellulose as an active ingredient is more preferable. By containing a cellulosic water-retaining agent, it is possible to obtain a finishing mortar suitable for workability, particularly for plastering, and also contributes to suppression of rapid drying and improvement of curability at the initial stage of construction.
本発明の仕上用モルタルにおける（Ｈ）セルロース系保水剤の含有量は、（Ａ）白色セメント１００質量部に対して０．１〜０．２５質量部が好ましい。セルロース系保水剤の含有量を０．１〜０．２５質量部とすることで、セルロース系保水剤による前記効果を十分奏することができる。 The content of the (H) cellulosic water retaining agent in the finishing mortar of the present invention is preferably 0.1 to 0.25 parts by mass with respect to 100 parts by mass of the (A) white cement. By making the content of the cellulosic water retention agent 0.1 to 0.25 part by mass, the above-described effect of the cellulosic water retention agent can be sufficiently exerted.
また、本発明の仕上用モルタルは、更に（Ｉ）消泡剤を含有することが好ましい。消泡剤は、ポリエーテル系、シリコーン系の何れでも使用可能であり、例えばモルタルやコンクリート用の市販品が使用できる。消泡剤の含有により混練時に巻き込まれる気泡の残存を大幅に低減し、強度と緻密性の低下を抑制することができる他、施工後における破泡痕発生も防止でき、美感向上にも貢献する。 The finishing mortar of the present invention preferably further contains (I) an antifoaming agent. As the antifoaming agent, any of polyether type and silicone type can be used. For example, commercially available products for mortar and concrete can be used. By containing an antifoaming agent, the remaining of bubbles entrained during kneading can be greatly reduced, and the deterioration of strength and denseness can be suppressed, and the occurrence of foam breakage after construction can also be prevented, contributing to improved aesthetics. .
本発明の仕上用モルタルにおける（Ｉ）消泡剤の含有量は、（Ａ）白色セメント１００質量部に対して０．０８〜０．１５質量部が好ましい。セルロース誘導体を有効成分とする保水剤の含有量を０．０８〜０．１５質量部とすることで、消泡剤による前記効果を十分奏することができる。 The content of (I) antifoaming agent in the finishing mortar of the present invention is preferably 0.08 to 0.15 parts by mass with respect to 100 parts by mass of (A) white cement. The said effect by an antifoamer can fully be show | played because content of the water retention agent which uses a cellulose derivative as an active ingredient shall be 0.08-0.15 mass part.
本発明の仕上用モルタルは、前記（Ａ）〜（Ｉ）以外の成分も、本発明による効果を実質喪失させないものであれば含有することが可能である。このような成分としては、例えば、何れもモルタルやコンクリートで含有使用することのできる、乾燥収縮低減剤、減水剤類（分散剤、高性能減水剤、高性能ＡＥ減水剤、流動化剤等と称されているものを含む。）、凝結調整剤などを挙げることができる。 The finishing mortar of the present invention can contain components other than the components (A) to (I) as long as the effects of the present invention are not substantially lost. Examples of such components include dry shrinkage reducing agents, water reducing agents (dispersants, high performance water reducing agents, high performance AE water reducing agents, fluidizing agents, etc., all of which can be used in mortar and concrete. And a coagulation adjusting agent.
また、本発明の仕上用モルタルに、白色以外の着色化のために着色剤（材）を加えて仕上用着色モルタルにするときは、前記仕上用モルタルに、所望の着色剤（材）を外割で加える。その際の添加量は着色剤（材）や所望する発色の色合い等に応じて適宜定めれば良い。添加量の目安を例示すると、混練水を除いた他の成分を含む仕上用モルタル１００質量部に対し、概ね１５質量部以下、好ましくは０．５〜１５質量部の添加量を挙げることができる。これ以上の添加量では、多くの場合、添加量増加に伴う色調の変化が感知し難くなる傾向にある。さらなる過度の大量添加は良好な耐久性や施工性に支障をきたす虞もある。添加可能な着色剤（材）としては、他の含有成分と化学反応を実質起こさないものであれば特に制限されず、例えばモルタル用の顔料や着色鉱石粒等を挙げることができる。また、着色化は仕上面全体を斑無く均一色で発色させる場合でも、仕上面の表明付近に分散した着色粒が発色する分散発色の場合の何れでも対応できる。後者の場合、分散着色粒が現れていない部分の仕上面の色調（背景色）は、通常は白色となる。 In addition, when a colorant (material) is added to the finishing mortar of the present invention for coloring other than white, a desired colorant (material) is removed from the finishing mortar. Add in percent. The addition amount at that time may be appropriately determined according to the colorant (material), the desired color tone, and the like. As an example of the amount of addition, the addition amount of about 15 parts by mass or less, preferably 0.5 to 15 parts by mass can be mentioned with respect to 100 parts by mass of the finishing mortar containing other components excluding kneaded water. . When the amount is more than this, in many cases, the change in the color tone accompanying the increase in the amount added tends to be difficult to perceive. Further excessive addition of a large amount may interfere with good durability and workability. The colorant (material) that can be added is not particularly limited as long as it does not cause a chemical reaction with other components, and examples thereof include mortar pigments and colored ore grains. Coloring can be applied to either the case where the entire finished surface is colored with a uniform color or the case where the colored particles dispersed near the surface of the finished surface are colored. In the latter case, the color tone (background color) of the finished surface of the portion where the dispersed colored particles do not appear is usually white.
本発明の仕上用モルタルは、例えばモルタルミキサなどの混合機を使用して、前記の各成分に水を加えて混練し、外壁等に塗布することにより施工することができる。本発明の仕上用モルタルの混練水の量は特に制限されるものではなく、配合や施工手段等に応じて適宜設定すれば良い。一例として、金鏝や木鏝を使用する左官施工を行う場合の目安を示すと、仕上用モルタル中の白色セメント含有量１００質量部に対する混練水の量として、１６〜１８質量部を挙げることができ、吹付装置を使用した吹付施工を行う場合の目安を示すと、１７〜１９質量部を挙げることができる。これらの量に限定されるものではない。 The finishing mortar of the present invention can be applied by, for example, using a mixer such as a mortar mixer, adding water to the above components, kneading, and applying to the outer wall or the like. The amount of the kneading water in the finishing mortar of the present invention is not particularly limited, and may be set as appropriate according to the formulation, construction means, and the like. As an example, when showing a guideline when performing plastering using a hammer or a wooden mallet, 16 to 18 parts by mass of the kneaded water with respect to 100 parts by mass of the white cement content in the finishing mortar can be mentioned. If it shows the standard in the case of performing spraying construction using a spraying apparatus, 17-19 mass parts can be mentioned. It is not limited to these amounts.
本発明の仕上用モルタルの施工対象としては、戸建住宅、集合住宅、公共建築物の外壁、擬木、擬石等が挙げられる。施工手段としては、鏝施工、ローラー施工等が好適であるが、吹付施工も行うことができる。造形上の仕上げ手段として、例えば掻き落とし仕上げ、漆喰仕上げ、木鏝仕上げ等を行うことができる。また、仕上げ表面に、櫛目、彫刻模様等の種種の紋様を施すこともできる。 Examples of the construction object of the finishing mortar of the present invention include detached houses, apartment houses, outer walls of public buildings, artificial trees, and artificial stones. As construction means, dredging construction, roller construction, etc. are suitable, but spraying construction can also be performed. As finishing means for modeling, for example, scraping finish, plaster finish, and wood finish can be performed. In addition, various patterns such as combs and sculptures can be formed on the finished surface.
次に実施例を挙げて本発明をさらに詳しく説明する。尚、本発明は、これら実施例に限定されるものではない。 EXAMPLES Next, an Example is given and this invention is demonstrated in more detail. The present invention is not limited to these examples.
［仕上用モルタルの作製］
作製は、特記無い限り、２０（±１）℃の気温下で行った。
表１に表す材料と水を使用し、表３−１〜表３−３で表される配合となるようホバートミキサ又はハンドミキサを使用し、約１分間混練してフレッシュ状態の仕上用モルタル（本発明品１〜２９、参考品３１〜４３）を作製した。ここで、表１に表した材料のうち、普通細骨材の粒度については表２にその詳細を表す。また、使用材料の一部について、マンセルカラーシステムの色相、明度および彩度を、色差計（日本電色工業社製）で１ｃｍ2当たりのＬ値、ａ値及びｂ値を計測したものから求め、結果を表１に表す。さらに、仕上用モルタルに配合した普通細骨材のうち、マンセルカラーシステムの明度８．５〜９．５および彩度０．５〜１．０に相当する普通細骨材のみの粒度構成（当該色調の普通細骨材中の質量割合）を表４−１〜表４−３に表す。
[Preparation of finishing mortar]
The production was performed at an air temperature of 20 (± 1) ° C. unless otherwise specified.
Using the materials and water shown in Table 1, using a Hobart mixer or a hand mixer so as to have the composition shown in Table 3-1 to Table 3-3, kneading for about 1 minute and finishing mortar in a fresh state ( Invention products 1-29 and reference products 31-43) were prepared. Here, among the materials shown in Table 1, details of the particle size of ordinary fine aggregate are shown in Table 2. For some of the materials used, the hue, brightness, and saturation of the Munsell color system are determined from the L value, a value, and b value per cm 2 measured with a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd.). The results are shown in Table 1. Furthermore, among the ordinary fine aggregates blended in the finishing mortar, the particle size composition of only ordinary fine aggregates corresponding to the Munsell color system brightness 8.5 to 9.5 and saturation 0.5 to 1.0 Tables 4-1 to 4-3 show the mass ratios of the normal fine aggregates in color tone.
［仕上用モルタルのフレッシュ性状］
前記作製したフレッシュ状態の仕上用モルタルについて、次の性状を測定した。各測定結果は表５−１及び表５−２に纏めて表す。尚、基本性状の測定は２０（±１）℃の気温下で行った。
[Fresh properties of finishing mortar]
The following properties were measured for the freshly finished finishing mortar. Each measurement result is summarized in Table 5-1 and Table 5-2. The basic properties were measured at an air temperature of 20 (± 1) ° C.
（１）モルタルのフロー値
測定方法はＪＩＳ Ｒ ５２０１に準拠した方法で行った。この測定は各仕上用モルタル作製から概ね３０秒以内に行った。
(1) Flow value of mortar The measuring method was the method based on JISR5201. This measurement was performed within approximately 30 seconds from the preparation of each finishing mortar.
（２）単位容積質量
測定方法は内容積５００ｍＬのステンレス製底付円筒容器形を使用し、ＪＩＳ Ａ １１７１に準拠した方法で行った。
(2) Unit volume mass The measuring method used the stainless steel bottomed cylindrical container shape with an internal volume of 500 mL, and was performed by the method based on JISA1171.
表５−１及び表５−２の結果から、本発明品の仕上用モルタルは、一般に、左官施工と吹付施工の何れにも適するとされているモルタルフロー値（２０℃で１６０〜１９０ｍｍ）の範囲内であることがわかる。 From the results of Table 5-1 and Table 5-2, the finishing mortar of the product of the present invention generally has a mortar flow value (160 to 190 mm at 20 ° C.) that is suitable for both plastering and spraying. It turns out that it is in the range.
［仕上用モルタルの造形性及び施工性に関する試験］
前記作製された仕上用モルタルを、６０×４５０ｍｍの面の一方を底面として地面に垂直に設置した４５０×６００×６０ｍｍのコンクリート平板の４５０×６００ｍｍの一方の面を壁面とし、この壁面に対し次の方法で塗布施工し、施工性と造形性を調べた。尚、施工は２０（±１）℃の気温下で行った。
[Tests on the formability and workability of finishing mortar]
One side of 450 × 600 mm of a concrete plate of 450 × 600 × 60 mm, in which the finished mortar thus prepared is installed perpendicularly to the ground with one side of 60 × 450 mm as a bottom surface, is set next to this wall surface. The method was applied and the workability and formability were examined. The construction was performed at an air temperature of 20 (± 1) ° C.
（１）鏝施工性と鏝施工による造形性の試験
金鏝に７ｍｍの櫛目鏝を使用し、前記仕上用モルタルをコンクリート壁面に約５ｍｍ厚で塗りつけた。塗布物のダレや落下が無く、且つ塗布後の金鏝に仕上用モルタルの付着残存が実質的に無かったものを鏝施工性「良好」と判断し、この状況にならなかったものを鏝施工性「不良」と判断した。
また、１回の鏝塗りで施工物に明瞭な櫛目模様が形成できたものを鏝施工による造形性が「良好」と判断し、この状況にならなかったものを造形性が「不良」と判断した。以上の結果を表６に表す。
(1) Dredging workability and test of formability by dredging work A 7 mm comb knot was used for the hammer, and the finishing mortar was applied to a concrete wall surface with a thickness of about 5 mm. If there is no sagging or dropping of the applied material and there is virtually no residual mortar remaining on the finished hammer, it is judged that the workability is "good" It was judged that the sex was “bad”.
Also, if a clear comb pattern can be formed on the work piece with a single glazing, the formability by culling is judged as "good", and those that did not become this situation are judged as "bad". did. The above results are shown in Table 6.
（２）鏝による掻き落としの造形性の試験
金鏝で、前記仕上用モルタルをコンクリート壁面に約５ｍｍ厚で塗りつけた後、１８０分以上経過後に、塗布物表目の凹凸を掻き落とし用の金鏝で掻き落とした。このような掻き落としを人力による金鏝で行うことができ、掻き落とした塗布物表面にほぼ均一な鳥肌状の突起模様が形成できたものを造形性が「良好」と判断し、このような模様が形成されないか明確さを欠く模様であったものを造形性が「不良」と判断した。以上の結果を表６に表す。
(2) Scratch-off formability test with scissors After applying the finishing mortar to the concrete wall surface with a thickness of about 5 mm with a hammer, after more than 180 minutes have passed, the gold on the surface of the applied material is scraped off. I scraped it off with a spear. Such scraping can be done with a man-made hammer, and it is judged that the shapeability is “good” if an almost uniform goosebump-like projection pattern is formed on the surface of the scraped application material. The pattern was not formed or the pattern lacking clarity was judged to be “poor”. The above results are shown in Table 6.
（３）鏝による漆喰仕上げの造形性の試験
金鏝で、前記仕上用モルタルをコンクリート壁面に約５ｍｍ厚で塗りつけた後、コンクリート壁面上の塗布物を金鏝で壁面側に押しつけ、壁面に水平に均さずに、塗布物から金鏝をそのまま引き離した。塗布物が壁面から剥がれること無く、且つ塗布物表面に漆喰状の模様が形成されていたものを造形性が「良好」と判断し、このような状況に至らなかったものを造形性が「良好」と判断した。以上の結果を表６に表す。
(3) Stucco finish molding test with a hammer After applying the finishing mortar to a concrete wall surface with a thickness of about 5 mm with a hammer, press the coating on the concrete wall against the wall surface with a hammer to level the wall. The hammer was pulled away from the coated material as it was. Judgment is judged as "good" if the coated material is not peeled off from the wall surface, and the plaster-like pattern is formed on the surface of the coated material. I decided. The above results are shown in Table 6.
（４）吹付施工性と吹付施工による造形性の試験
市販のリシンガンを吹付装置として使用し、前記仕上用モルタルをコンクリート壁面に吹付けた。約５ｍｍ厚の塗布物を形成することができ、塗布物のダレや落下が無く、且つ使用したリシンガンの噴射口に閉塞化が見られなかったものを、吹付施工性「良好」と判断し、このような状況には至らなかったものを吹付施工性「不良」と判断した。
また、コンクリート壁面に吹付けられた塗布物の表面に明瞭なリシン模様が形成されていたものを吹付施工による造形性が「良好」と判断し、このようなリシン模様が得られなかったり、多少とも明瞭さを欠く模様の場合は、造形性が「不良」と判断した。以上の結果を表６−１及び表６−２に表す。
(4) Test of sprayability and formability by spraying The commercially available ricin gun was used as a spraying device, and the finishing mortar was sprayed onto the concrete wall surface. About 5 mm thick coating can be formed, the coating does not sag or fall, and the spraying port of the used ricin gun is not clogged, and the spraying workability is “good”. Those that did not reach such a situation were judged to be “bad” spraying workability.
Also, if the surface of the applied material sprayed on the concrete wall surface is clearly lysine pattern formed, it is judged that the formability by spraying construction is `` good '' and such lysine pattern cannot be obtained or somewhat In the case of a pattern lacking clarity, the formability was judged as “bad”. The above results are shown in Table 6-1 and Table 6-2.
表６−１及び表６−２の結果から、本発明品の仕上用モルタルは、多様な造形性に適したものであることがわかる。 From the results of Table 6-1 and Table 6-2, it can be seen that the finishing mortar of the product of the present invention is suitable for various formability.
［仕上用モルタルの耐久性に関係する物理性状の試験］
前記作製された仕上用モルタルについて、耐久性に関係する次の物理性状を調べた。尚、性状把握のための試験・測定は、特記無い限り、２０（±１）℃の気温下で行った。これらの結果は表７に纏めて表す。
[Test of physical properties related to durability of finishing mortar]
About the produced finishing mortar, the following physical property related to durability was investigated. The tests and measurements for grasping the properties were performed at an air temperature of 20 (± 1) ° C. unless otherwise specified. These results are summarized in Table 7.
（１）形状寸法安定性の評価試験
ＪＩＳ Ａ １１７１に準拠した方法で、材齢２８日での長さ変化率を測定した。この長さ変化率が０．１％未満の場合は施工対称物との接着状態の維持が容易であるため、長期にわたり剥離や界面亀裂が発生し難く、この点に関して耐久性が「良好」と判断される。
(1) Evaluation test of dimensional stability The length change rate at the age of 28 days was measured by a method based on JIS A 1171. When the rate of change in length is less than 0.1%, it is easy to maintain the state of adhesion to the construction object, so that peeling and interfacial cracks are unlikely to occur over a long period of time. To be judged.
（２）吸水性の試験
ＪＩＳ Ａ １１７１に準拠した方法で、２４時間の吸水量を測定した。吸水量の多いものは乾燥収縮によるひび割れ発生の可能性が高まる。
(2) Water absorption test The amount of water absorption for 24 hours was measured by a method based on JIS A 1171. Those with a large water absorption increase the possibility of cracking due to drying shrinkage.
（３）凍結融解抵抗性の評価試験
内寸１００×１００×４００ｍｍの型枠に仕上用モルタルを充填し、４８時間後に脱型した。次いで、得られた成形硬化体を４週間養生後、２０℃の水中に２４時間浸して試験体とした。この試験体を、ＪＩＳ Ａ １１４８に規定のＡ法に準拠した方法で、凍結融解試験を３００サイクルずつ行い、凍結融解３００サイクル時の相対動弾性係数（％）を求めた。相対動弾性係数が８５％以上の場合は、建築物では十分な耐凍害性が具備されていることから、この点に関して耐久性が「良好」と判断される。
(3) Freezing and thawing resistance evaluation test A mold having an inner size of 100 × 100 × 400 mm was filled with finishing mortar, and demolded after 48 hours. Subsequently, the obtained molded cured body was cured for 4 weeks and then immersed in water at 20 ° C. for 24 hours to obtain a test body. This specimen was subjected to a freeze-thaw test for 300 cycles in accordance with a method stipulated in JIS A 1148, and the relative dynamic elastic modulus (%) at the time of 300 cycles of freeze-thaw was determined. When the relative kinematic modulus is 85% or more, the building has sufficient frost resistance, and therefore, the durability is judged as “good” in this respect.
（４）圧縮強度及び曲げ強度試験
内寸４０×４０×１６０ｍｍの型枠に仕上用モルタルを充填し、４８時間後に脱型した。得られた成形硬化体を大気中で養生し、材齢２８日になったものを供試体とし、ＪＩＳ Ａ ６９１６に準拠した方法で一軸圧縮強度と曲げ強度の測定を行った。
(4) Compressive strength and bending strength test Finishing mortar was filled in a mold having an inner size of 40 × 40 × 160 mm, and demolded after 48 hours. The molded hardened body thus obtained was cured in the atmosphere, and a specimen having a material age of 28 days was used as a specimen, and uniaxial compressive strength and bending strength were measured by a method based on JIS A 6916.
表７−１及び表７−２の結果から、本発明品の仕上用モルタルは、ひび割れ抵抗性や耐久性に優れることがわかる。これに対し本発明外の参考品のモルタルは、このような性状に劣ったものとなった。 From the results of Table 7-1 and Table 7-2, it can be seen that the finishing mortar of the product of the present invention is excellent in crack resistance and durability. On the other hand, the reference mortar outside the present invention was inferior to such properties.
［仕上用モルタルの美観に関係する特性の評価］
前記作製された仕上用モルタルについて、次の試験を行い、美観に関係する特性を調べた。
[Evaluation of properties related to aesthetics of finishing mortar]
About the produced finishing mortar, the following test was done and the characteristic regarding aesthetics was investigated.
（１）防汚性の評価試験
前記作製された仕上用モルタルを、金鏝を使用し、１５０×３００ｍｍの面が地面に水平となるように置かれた１５０×３００×３ｍｍのフレキ板２枚の上面に約５ｍｍ厚となるよう塗布した。２０（±１）℃の屋内大気中で３週間養生した後、次いで、このフレキ板のうち１枚について、仕上用モルタルが塗布されていない残りの５面をエポキシ樹脂で被覆した。塗布物形成面が南向きになるよう１５０×３ｍｍの一面を底面にして、屋外地面に垂直に設置し、平均気温２３℃のもとで９０日間暴露試験を行った。また、暴露試験を行わない方のフレキ板は、ダスト防止ケースに入れ、そのまま９０日間２０℃（±１℃）屋内で保管した。前記暴露試験終了後のフレキ板の塗布物表面と、同じ時までケース保管していたフレキ板の塗布物表面を、色差計（市販品）でそれぞれ測定し、両者の色差（Δ＊ab）を求めた。色差（Δ＊ab）が２．０未満であると、肉眼での明瞭な色差の確認がし難いことから、被暴露体に目立つ程の汚れは無く、防汚性が「良好」と判断される。色差（Δ＊ab）が２．０以上になると、肉眼で両フレキ板の塗布物の色差を区別できるようになるため、暴露中に汚染物付着の可能性が高まり、防汚性が「不良」と判断した。この結果を表８−１及び表８−２に表す。
(1) Antifouling property evaluation test Two 150 × 300 × 3 mm flexible plates in which the finishing mortar thus prepared was placed using a hammer and the 150 × 300 mm surface was horizontal to the ground. It applied so that it might become a thickness of about 5 mm on the upper surface. After curing for 3 weeks in an indoor atmosphere of 20 (± 1) ° C., one of the flexible boards was then coated with an epoxy resin on the remaining five surfaces not coated with finishing mortar. A surface of 150 × 3 mm was used as the bottom so that the surface on which the coated material was formed faced downward, and was placed vertically on the outdoor ground, and an exposure test was conducted for 90 days at an average temperature of 23 ° C. The flexible board not subjected to the exposure test was placed in a dust prevention case and stored indoors at 20 ° C. (± 1 ° C.) for 90 days. The surface of the flexible plate after the exposure test and the surface of the flexible plate that had been stored in the case until the same time were measured with a color difference meter (commercially available), and the color difference (Δ * ab ) between them was measured. Asked. If the color difference (Δ * ab ) is less than 2.0, it is difficult to confirm a clear color difference with the naked eye, so there is no noticeable stain on the exposed object, and the antifouling property is judged as “good”. The When the color difference (Δ * ab ) is 2.0 or more, it becomes possible to distinguish the color difference between the coatings of both flexible boards with the naked eye. This increases the possibility of contamination adhering during exposure. I decided. The results are shown in Table 8-1 and Table 8-2.
（２）ひび割れ抵抗性の評価
前記の防汚性の評価試験において、暴露試験終了後のフレキ板の塗布物表面と、同じ時期までケース保管していたフレキ板の塗布物表面に対し、ひび割れ発生の有無を調べた。５倍ルーペを使用した目視観察で、微細ひび割れを含め、全くひび割れが見られなかったものを、ひび割れ抵抗性「良好」と判断し、微細ひび割れが１ヶ所でも見られたものをひび割れ抵抗性「不良」と判断した。この結果も表８に表す。
(2) Evaluation of crack resistance In the antifouling evaluation test described above, cracks occurred on the surface of the flexible plate after the exposure test and on the surface of the flexible plate that had been stored in the case until the same time. The presence or absence of was investigated. Visual observation using a 5X loupe showed no cracks at all, including fine cracks, and judged that the crack resistance was "good". It was judged as “bad”. This result is also shown in Table 8.
（３）仕上用モルタルの施工後の色調の評価
前記の防汚性の評価試験において、仕上用モルタル塗布後のフレキ板を２０（±１）℃の屋内大気中で３週間養生した時点の塗布物の表面の色をマンセルカラーシステム色見本帳を用い、マンセルカラーシステムの色相、明度及び彩度を調べた。この結果も表８−１及び表８−２に表す。
(3) Evaluation of color tone after construction of finishing mortar In the above-mentioned antifouling property evaluation test, the flexible plate after the finishing mortar application was applied for 3 weeks in an indoor atmosphere of 20 (± 1) ° C. Using the Munsell Color System Color Sample Book, the hue, brightness, and saturation of the Munsell color system were examined. This result is also shown in Tables 8-1 and 8-2.
（４）仕上用着色モルタルの作製と評価
前記表３−１〜表３−３及び表４−１〜表４−３で表わした配合の一部の仕上用モルタルについて、作製時に、水を除いた配合に使用した材料の合計量の１０質量％（実施例１−６、比較例１−４）に相当する量の表９に表すモルタル用顔料（尾関社製）又は２質量％（実施例７）、１０質量％（実施例８）及び１５質量％（実施例９）に相当する量の表９に表す着色合成鉱石粒（窯業用無機顔料を球形に溶融造粒したもの。平均粒径１．２ｍｍ）を外割で加えて混練し、着色を施した仕上用着色モルタル作製した。このモルタルを、１５０×３００ｍｍの面が地面に水平となるように置かれた１５０×３００×３ｍｍのフレキ板の上面に約５ｍｍ厚となるよう金鏝で塗布した。２０（±１）℃の屋内大気中で３週間養生した時点の塗布物の表面の色を色差計（日本電色工業社製）で１ｃｍ2当たりのＬ値、ａ値及びｂ値を計測してマンセルカラーシステムの色相、明度及び彩度に変換した。この結果を表９に表す。尚、実施例７および実施例８は白色地に細かい青色の斑点が存する仕上面となったが、マンセルカラーシステムの色相、明度及び彩度は約１ｃｍ2の面に対する色差計によるＬ値、ａ値及びｂ値を測定したものから求めた。よって、白色部と青色部の個々の色調について色差計を使用した測定は行ったものではない。青色に発色した細かい斑点の色調を、マンセルカラーシステムの色見本帳を用いて眼視で見た限りは、混合前の着色鉱石粒単体のマンセル値の色調と実質同じ（明度、彩度とも単体から±０．２以内の差）であった。
(4) Preparation and Evaluation of Finishing Colored Mortar For some finishing mortars having the formulations shown in Tables 3-1 to 3-3 and Tables 4-1 to 4-3, water was removed during preparation. Pigment for mortar (made by Ozekisha) represented in Table 9 in an amount corresponding to 10% by mass (Example 1-6, Comparative Example 1-4) of the total amount of materials used for blending or 2% by mass (Example 7) Colored synthetic ore grains represented by Table 9 in amounts corresponding to 10% by mass (Example 8) and 15% by mass (Example 9) (melted and granulated inorganic pigments for ceramics. Average particle size 1.2 mm) was added in an external ratio and kneaded to prepare a colored mortar for finishing. The mortar was applied with a hammer to a thickness of about 5 mm on the top surface of a 150 × 300 × 3 mm flexible plate placed so that the 150 × 300 mm surface was horizontal to the ground. 20 (± 1) ° C. color difference meter the color of the surface of the indoor atmosphere 3 weeks coating of cured time points (Nippon Denshoku Industries Co., Ltd.) in 1 cm 2 per L values, measuring the a and b values Converted to the hue, brightness, and saturation of the Munsell color system. The results are shown in Table 9. In Examples 7 and 8, the finished surface had fine blue spots on a white background. However, the hue, brightness, and saturation of the Munsell color system are L values obtained by a color difference meter for a surface of about 1 cm 2 , a The value and the b value were determined from the measured values. Therefore, measurement using a color difference meter was not performed for each color tone of the white portion and the blue portion. As long as the color of the fine spots that are colored blue is viewed visually using the Munsell Color System color sample book, it is substantially the same as the Munsell color tone of the colored ore grains before mixing (both lightness and saturation are simple) Difference within ± 0.2).
表８−１及び表８−２の結果から、本発明品の仕上用モルタルは、少なくとも９０日間の暴露を経ても、暴露を経ずに防汚ケースに保管されていたものと比べ、肉眼で簡単に識別できるほどの色差が生じていないことから、汚れが付き難く、付いた汚れも雨水により自然に除去され易いと思われるため、防汚性に優れていることがわかる。また、本発明品の仕上用モルタルは、長期間の暴露を経たものでも微細なひび割れは全く発生しておらず、塗布時の表面外観を崩れることなく維持できることがわかる。
また、本発明の仕上用モルタルは、通常は鮮明な白色を安定して呈することができるが、さらに、表９の結果から、顔料などの着色物質を加えると、着色物質の色により忠実な色を発色する仕上用着色モルタルが得られることから、所望の色調に仕上げる基材としても適したものであることがわかる。
From the results of Table 8-1 and Table 8-2, the finishing mortar of the product of the present invention was visually observed even after being exposed for at least 90 days, compared with that stored in the antifouling case without exposure. Since there is no color difference that can be easily identified, it is difficult to get dirt, and the attached dirt is likely to be easily removed by rainwater. In addition, it can be seen that the finishing mortar of the product of the present invention has no fine cracks even after being exposed for a long period of time and can maintain the surface appearance at the time of application without breaking.
In addition, the finishing mortar of the present invention can normally stably exhibit a clear white color. However, from the results shown in Table 9, when a coloring substance such as a pigment is added, a color more faithful to the color of the coloring substance. From this, it can be seen that it is suitable as a base material for finishing to a desired color tone.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015253261A JP6645825B2 (en) | 2015-12-25 | 2015-12-25 | Mortar for finishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015253261A JP6645825B2 (en) | 2015-12-25 | 2015-12-25 | Mortar for finishing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017114735A true JP2017114735A (en) | 2017-06-29 |
| JP6645825B2 JP6645825B2 (en) | 2020-02-14 |
Family
ID=59234890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015253261A Expired - Fee Related JP6645825B2 (en) | 2015-12-25 | 2015-12-25 | Mortar for finishing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6645825B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020083724A (en) * | 2018-11-28 | 2020-06-04 | 株式会社平田工業所 | Surface temperature lowering concrete and surface temperature lowering concrete panel, and construction method for surface temperature lowering concrete |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117229A (en) * | 1997-06-19 | 2000-09-12 | Italcement S.P.A. | Use of organic additives for the preparation of cementitious compositions with improved properties of constancy of color |
| JP2006103986A (en) * | 2004-09-30 | 2006-04-20 | Taiheiyo Material Kk | Cement-based surface covering material |
| JP2007084420A (en) * | 2005-08-26 | 2007-04-05 | Ohbayashi Corp | Mortar composition, coating material, and spray material |
| JP2010138031A (en) * | 2008-12-11 | 2010-06-24 | Ube Ind Ltd | Hydraulic composition |
| JP2013095615A (en) * | 2011-10-28 | 2013-05-20 | Taiheiyo Materials Corp | Highly-durable finishing material |
| JP2015101512A (en) * | 2013-11-26 | 2015-06-04 | 太平洋マテリアル株式会社 | Outer wall structure for single-family housing and construction method thereof |
-
2015
- 2015-12-25 JP JP2015253261A patent/JP6645825B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117229A (en) * | 1997-06-19 | 2000-09-12 | Italcement S.P.A. | Use of organic additives for the preparation of cementitious compositions with improved properties of constancy of color |
| JP2006103986A (en) * | 2004-09-30 | 2006-04-20 | Taiheiyo Material Kk | Cement-based surface covering material |
| JP2007084420A (en) * | 2005-08-26 | 2007-04-05 | Ohbayashi Corp | Mortar composition, coating material, and spray material |
| JP2010138031A (en) * | 2008-12-11 | 2010-06-24 | Ube Ind Ltd | Hydraulic composition |
| JP2013095615A (en) * | 2011-10-28 | 2013-05-20 | Taiheiyo Materials Corp | Highly-durable finishing material |
| JP2015101512A (en) * | 2013-11-26 | 2015-06-04 | 太平洋マテリアル株式会社 | Outer wall structure for single-family housing and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020083724A (en) * | 2018-11-28 | 2020-06-04 | 株式会社平田工業所 | Surface temperature lowering concrete and surface temperature lowering concrete panel, and construction method for surface temperature lowering concrete |
| JP7091233B2 (en) | 2018-11-28 | 2022-06-27 | 株式会社平田工業所 | Construction method of surface temperature lowering concrete, surface temperature lowering concrete panel and surface temperature lowering concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6645825B2 (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0159894B1 (en) | Process for water-proofing gypsum materials | |
| US6217646B1 (en) | Sculptable and breathable wall coating mortar compound | |
| CA2529810C (en) | Clay plaster | |
| JP5922764B2 (en) | Cellulose ether compounds for improving high temperature performance of outer heat insulating finishing system (EIFS) mortar | |
| WO2020043644A1 (en) | Dry powder composition, putty composition obtainable from such composition, and substrate coated with such putty composition | |
| KR101777267B1 (en) | Adhesive composition for ceramic tile for waterproof and method for laying ceramic tile on concrete structure therewith | |
| JP2013095615A (en) | Highly-durable finishing material | |
| CN109439054B (en) | Putty powder and putty slurry for plastering-free machine, and preparation method and application thereof | |
| EP2524960A2 (en) | Admixture composition for a tile cement mortar and a tile cement mortar composition comprising the same | |
| JP5863991B2 (en) | Low weathering tile grout composition | |
| WO2009007994A2 (en) | Composition of materials for production of fly ash, pre polymerized resin composite | |
| JP5041521B2 (en) | High strength restoration material | |
| US3895018A (en) | Plaster composition | |
| US5362320A (en) | Sandable low shrinkage mortar patching/coating compound | |
| JP6645825B2 (en) | Mortar for finishing | |
| CN110484048A (en) | A kind of dry powder paint for inner walls and its preparation method and application of releasable negative oxygen ion | |
| KR100811699B1 (en) | Coating finishing material for construction internal | |
| KR20230170943A (en) | Silicon-containing emulsion powder for use in the manufacture of cement-based tile adhesive dry mix compositions | |
| CN113429171A (en) | Wall facing mortar and preparation method and use method thereof | |
| US9605158B2 (en) | Polystyrene foam products with improved adhesion and water resistance, and methods of making the same | |
| CA3118730C (en) | Composition for a very durable pasty fill and finishing material, pasty fill and finishing material, and method for producing it | |
| JP4827188B2 (en) | Base material | |
| JP2006103986A (en) | Cement-based surface covering material | |
| JP2020132506A (en) | Hydraulic composition and its hydraulic matter, and method for preventing efflorescence phenomenon | |
| RU2632826C9 (en) | Single-layer plaster for outer wall panels and its manufacturing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181116 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190925 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20191001 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200107 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200109 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6645825 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |