JP2510870B2 - Construction method of self-leveling material - Google Patents
Construction method of self-leveling materialInfo
- Publication number
- JP2510870B2 JP2510870B2 JP62322758A JP32275887A JP2510870B2 JP 2510870 B2 JP2510870 B2 JP 2510870B2 JP 62322758 A JP62322758 A JP 62322758A JP 32275887 A JP32275887 A JP 32275887A JP 2510870 B2 JP2510870 B2 JP 2510870B2
- Authority
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- Japan
- Prior art keywords
- aggregate
- weight
- slurry
- less
- self
- 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.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Floor Finish (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、セルフレベリング（流し延べ床）材（以
下、SL材という）の施工方法に関する。The present invention relates to a method for applying a self-leveling (casting floor) material (hereinafter referred to as SL material).
詳しくは、不陸調整厚さが10mmを超える場合に好適な
SL材の施工方法に関する。Specifically, it is suitable when the unsteadiness adjustment thickness exceeds 10 mm.
Regarding SL material construction method.
SL材は、それを水で混練してスラリー状態にしたとき
に発現するその自己平滑性を利用して、下地材の上に打
設して水平な面を形成させ、硬化させて平滑な床面を得
るのに用いられる。通常、その標準打設厚さは平均10mm
程度である。SL material takes advantage of its self-smoothness when it is kneaded with water to make it into a slurry state, and is cast on a base material to form a horizontal surface and hardened to cure a smooth floor. Used to get a face. Normally, the standard casting thickness is 10 mm on average
It is a degree.
床仕上げ面までの不陸調整厚さが10mmを超える場合に
は、セメントモルタルを打ち込み金ゴテを用いて表面を
平滑に仕上げる方法、または、前処理としてSL材打設厚
として約10mmを残してセメントモルタルで嵩上げし、モ
ルタル硬化後にSL材を打設して仕上げる方法などがとら
れている。If the unevenness adjustment thickness to the floor finish surface exceeds 10 mm, cement mortar is driven in to finish the surface smoothly using a metal iron, or as a pretreatment, leave about 10 mm as the SL material casting thickness. A method is used in which the cement mortar is used to raise the volume, and after the mortar hardens, the SL material is placed and finished.
セメントコンクリートやセメントモルタルを用いたと
き、コンクリートやモルタルを打ち込んで均した後、生
じた浮水がなくなり始める頃にコテ押さえ作業を行って
表面を仕上げる。この方法は材料費の面では経済的では
あるが、長時間の待ち時間を必要とするため施工所要時
間が長くなり、また、コテ押さえ作業には熟練した左官
技術を必要とし、しかも仕上がり床面のレベル精度が不
充分であるという難点がある。When cement concrete or cement mortar is used, after the concrete or mortar is driven in and leveled, a trowel holding work is performed to finish the surface when the generated floating water begins to disappear. Although this method is economical in terms of material cost, it requires a long waiting time, which increases the time required for construction, and requires skilled plasterer technology to hold the iron, and the finished floor surface However, there is a problem that the level accuracy of is insufficient.
また、セメントモルタルで嵩上げしてからSL材を打設
する方法は工程が２段階になるので、操作が煩雑で所要
工期が長くなり、不経済である。In addition, the method in which the SL material is placed after being raised with cement mortar has two steps, so the operation is complicated and the required construction period is long, which is uneconomical.
SL材は自己平滑性を有するので、コテ仕上げのような
熟練した左官技術を必要とせず、トンボ掛けのような簡
単な作業を行うだけでレベル精度のよい床面を得ること
ができ、しかも、セメントモルタルやセメントコンクリ
ートのように浮水を生ずることがないので短時間で施工
可能である。Since the SL material has self-smoothness, a skilled plasterer technique such as iron finishing is not required, and a floor surface with good level accuracy can be obtained simply by performing a simple work such as dragonfly hanging. Unlike cement mortar and cement concrete, floating water does not occur, so construction can be done in a short time.
SL材は施工性の点で優れているが、通常、水硬性物質
を基材として各種の添加剤を配合するので材料費が高く
なるため、経済性の面からSL材の標準の打設厚は平均10
mm程度とするのが一般的である。不陸調整の厚さが10mm
を超えるような場合には、セメントモルタルやセメント
コンクリートを用いる方法に比較して経済的に不利であ
る。SL material is excellent in terms of workability, but usually, because various additives are mixed with a hydraulic material as a base material, the material cost is high, so from the economical aspect, the standard casting thickness of SL material is used. Is an average of 10
It is generally about mm. The thickness of uneven adjustment is 10 mm
If it exceeds, it is economically disadvantageous as compared with the method using cement mortar or cement concrete.
材料費を低減するために、通常、SL材に配合される粒
径が1mm以下である細骨材の配合比を高めると、得られ
るSL材スラリーの流動性が低下し自己平滑性が失われて
硬化体の表面レベル精度が悪く、圧縮強度が低下するの
で実用性がない。In order to reduce the material cost, if the mixing ratio of the fine aggregate with a particle size of 1 mm or less, which is usually mixed with the SL material, is increased, the fluidity of the SL material slurry obtained decreases and the self-smoothness is lost. Therefore, the surface level accuracy of the cured product is poor and the compressive strength is reduced, so that it is not practical.
本発明は、上記の問題点を改善し、しかも経済性の面
でもセメントを用いる方法に対抗し得る、不陸調整厚さ
が10mmを超える場合に好適なSL材の施工方法を提供する
ことを目的とする。The present invention improves the above-mentioned problems, and can also oppose the method of using cement in terms of economy, and provides a suitable SL material construction method when the unsteady adjustment thickness exceeds 10 mm. To aim.
本発明者らは、従来技術の問題点を改善するため鋭意
研究を行い、SL材に配合する骨材の粒度と配合比ならび
にSL材組成物スラリーのフロー値を規定することによっ
て、自己平滑性を低下させることなく、硬化体の表面レ
ベル精度ならびに圧縮強度を確保することができ、しか
も打設厚を大きくした場合でも経済的に不利にならない
ことを知り本発明を完成した。The present inventors have conducted extensive studies to improve the problems of the prior art, and by defining the particle size and blending ratio of the aggregate to be blended in the SL material and the flow value of the SL material composition slurry, the self-smoothness The inventors have completed the present invention, knowing that the surface level accuracy and compressive strength of a cured product can be ensured without decreasing the value, and that it is not economically disadvantageous even when the casting thickness is increased.
すなわち、本発明は「セルフレベリング材と骨材とを
配合してなる組成物を施工する方法において、セルフレ
ベリング材100重量部に対して、最大粒径が5mm以下で、
粒度分布として粒径が0.3mm未満であるもの30重量％以
下、0.15mm未満であるもの10重量％以下で、かつ、粗粒
率が2.0〜3.5の範囲であり、調製されたセルフレベリン
グ材組成物スラリーの比重よりも小さい比重を有する固
形分を実質的に含まない骨材200〜500重量部を配合し、
得られた配合物に水または／およびポリマーディスパー
ジョンを加えて混練りし、セルフレベリング材組成物ス
ラリーのフロー値が180〜230mm［塩化ビニル樹脂製円筒
枠（内径50mm,高さ102mm,試料200ml）の引き上げ法によ
る。］の範囲であるように調製して、不陸調整厚さが10
mmを超える下地床の表面に流し延べて硬化させる、セル
フレベリング材の施工方法。」を要旨とする。That is, the present invention is a "method of applying a composition comprising a self-leveling material and an aggregate, with respect to 100 parts by weight of the self-leveling material, the maximum particle size is 5 mm or less,
The prepared self-leveling material composition has a particle size distribution of less than 0.3 mm of 30% by weight or less, less than 0.15 mm of 10% by weight or less, and a coarse particle ratio of 2.0 to 3.5. Compounding 200-500 parts by weight of aggregate substantially free of solid content having a specific gravity smaller than the specific gravity of the product slurry,
Water and / or polymer dispersion is added to the obtained mixture and kneaded, and the flow value of the self-leveling material composition slurry is 180 to 230 mm [vinyl chloride resin cylindrical frame (inner diameter 50 mm, height 102 mm, sample 200 ml ) According to the lifting method. ], The unsteady adjustment thickness is 10
A method of applying self-leveling material that casts it on the surface of the base floor exceeding 1 mm and hardens it. Is the gist.
以下、本発明について説明する。 The present invention will be described below.
本発明のSL材の施工方法の対象となる構築物の下地床
−基礎下地としては、セメントモルタル床，コンクリー
トスラブ,PC板,ALC板，気泡コンクリート，軽量コンク
リート，木毛セメント板，構造用合板などの新設ないし
既設のものを挙げることができる。Base floor of the construction subject to the construction method of the SL material of the present invention-foundation base includes cement mortar floor, concrete slab, PC board, ALC board, cellular concrete, lightweight concrete, wood wool cement board, structural plywood, etc. The new or existing one can be mentioned.
本発明において、SL材としては石膏系または無機セメ
ント系のSL材を用いることができる。石膏系SL材として
は、α半水石膏，β半水石膏,II型無水石膏などの石膏
類を基材とするものを、また無機セメント系SL材として
は、普通ポルトランドセメント，早強ポルトランドセメ
ント，超早強ポルトランドセメント，中庸熱ポルトラン
ドセメント，高炉セメント，シリカセメント，フライア
ッシュセメント，急硬性セメント，アルミナセメントな
どのセメント類を基材とするものをそれぞれ例示するこ
とができる。In the present invention, a gypsum-based or inorganic cement-based SL material can be used as the SL material. As gypsum-based SL materials, those based on gypsum such as α-hemihydrate gypsum, β-hemihydrate gypsum, and type II anhydrous gypsum, and as inorganic cement-based SL materials, ordinary Portland cement and early strength Portland cement , Super-high early strength Portland cement, moderate heat Portland cement, blast furnace cement, silica cement, fly ash cement, rapid hardening cement, alumina cement and the like which have cement as a base material can be exemplified respectively.
これらの基材には、流動化剤，粘度調整剤を配合し、
また、必要に応じてこの種のSL材に用いられる消泡剤，
膨張抑制剤，収縮抑制剤，凝結調節剤など各種の添加剤
を配合することができる。To these base materials, a fluidizing agent and a viscosity adjusting agent are blended,
Also, if necessary, the antifoaming agent used for this type of SL material,
Various additives such as an expansion inhibitor, a shrinkage inhibitor, and a coagulation regulator can be blended.
粘度調整剤はSL材スラリーのブリージング発生防止、
セメント粒子や骨材の沈降防止などを目的として用いら
れ、メチルセルロース，エチルセルロース，ヒドロキシ
エチルセルロース，カルボキシメチルセルロース，ポリ
ビニルアルロール，ポリエチレンオキサイド，カゼイ
ン，ポリアクリル酸などの水溶性高分子が挙げられる。Viscosity modifier is used to prevent breathing of SL slurry
It is used for the purpose of preventing sedimentation of cement particles and aggregates, and examples thereof include water-soluble polymers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, polyvinyl alrole, polyethylene oxide, casein, and polyacrylic acid.
これらの使用量はその種類と分子量によってそれぞれ
異なるが、基材100重量部あたり、通常、0.05〜２重量
部、好ましくは0.2〜0.5重量部の範囲である。The amount of these used varies depending on the type and the molecular weight, but is usually in the range of 0.05 to 2 parts by weight, preferably 0.2 to 0.5 parts by weight, per 100 parts by weight of the substrate.
使用量が少な過ぎると目的の効果が得られず、一方、
使用量が多過ぎるとSL材スラリーの粘度が増大して流動
性が悪くなる。If the amount used is too small, the desired effect cannot be obtained, while
If the amount used is too large, the viscosity of the SL material slurry increases and the fluidity deteriorates.
流動化剤は混水量を多くしないでスラリーの流動性を
良くすることを目的として用いられ、メラミンホルマリ
ン縮合物スルホン酸塩，リグニンスルホン酸塩，ポリア
ルキルアリルスルホン酸塩，β−ナフタレンスルホン酸
アルデヒド縮合物，リン酸エステル類などが挙げられ
る。The fluidizing agent is used for the purpose of improving the fluidity of the slurry without increasing the amount of mixed water. Melamine formalin condensate sulfonate, lignin sulfonate, polyalkylallyl sulfonate, β-naphthalene sulfonate aldehyde Examples include condensates and phosphoric acid esters.
これらの添加量は、基材100重量部あたり、通常0.1〜
２重量部、好ましくは0.25〜1.5重量部の範囲である。The addition amount of these is usually 0.1 to 100 parts by weight of the base material.
2 parts by weight, preferably 0.25 to 1.5 parts by weight.
添加量が0.1重量部未満では流動性を向上させる効果
が得られない。また、２重量部を超えて添加量を増して
も流動性を向上させる効果はそれほど高まらず、硬化を
遅くしたり硬化体の圧縮強度低下をもたらす。If the amount added is less than 0.1 part by weight, the effect of improving fluidity cannot be obtained. Further, even if the amount added exceeds 2 parts by weight, the effect of improving the fluidity is not so high, and the curing is delayed or the compression strength of the cured product is reduced.
硬化促進剤としては、塩化カルシウム，アルミン酸ナ
トリウム，けい酸ナトリウム，硫酸ナトリウム，硫酸カ
リウム，硫酸アルミニウムなどが挙げられる。これらの
添加量は、基材100重量部あたり0.1〜４重量部の範囲で
ある。Examples of the curing accelerator include calcium chloride, sodium aluminate, sodium silicate, sodium sulfate, potassium sulfate, aluminum sulfate and the like. The addition amount of these is in the range of 0.1 to 4 parts by weight per 100 parts by weight of the substrate.
消泡剤はスラリー中の気泡を除き、得られる硬化体の
ピンホール発生や強度低下を防止することを目的として
用いられ、通常、アルコール系，脂肪酸エステル系，酸
化エチレン−酸化プロピレン系，シリコン系など各種の
ものが使用される。添加量は通常、基材100重量部あた
り、0.05〜0.3重量部の範囲である。The defoaming agent is used for the purpose of removing bubbles in the slurry and preventing pinholes and strength deterioration of the obtained cured product. Usually, alcohol-based, fatty acid ester-based, ethylene oxide-propylene oxide-based, silicon-based Various things are used. The amount added is usually in the range of 0.05 to 0.3 parts by weight per 100 parts by weight of the substrate.
収縮低減材は硬化体の亀裂の防止を目的として用いら
れ、石灰系，カルシウムスルホアルミネート系などの膨
張材が使用される。添加量は通常、基材100重量部あた
り、１〜10重量部の範囲である。添加量が少な過ぎると
効果が小さく、多過ぎると得られる硬化体の膨張亀裂や
強度低下が起こりやすい。The shrinkage-reducing material is used for the purpose of preventing cracks in the cured body, and expansive materials such as lime type and calcium sulfoaluminate type are used. The amount added is usually in the range of 1 to 10 parts by weight per 100 parts by weight of the substrate. If the added amount is too small, the effect is small, and if the added amount is too large, expansion cracking or strength reduction of the obtained cured product tends to occur.
本明細書でいうSL材またはSL材組成物のスラリーとは
前記のSL材またはSL材と骨材との混合物に適宜の水また
は／およびポリマーディスパージョンを加えて混練し、
調製したスラリーを意味する。The SL material or the slurry of the SL material composition referred to in the present specification is kneaded by adding appropriate water or / and a polymer dispersion to a mixture of the SL material or the SL material and an aggregate,
The prepared slurry is meant.
本発明で用いられる骨材としては、川砂，山砂，海
砂，砕石，高炉水砕スラグなどが挙げられ、また、石粉
やスラグ等の粉末を造粒して調製した人工骨材を使用す
ることができる。Examples of the aggregate used in the present invention include river sand, mountain sand, sea sand, crushed stone, and granulated blast furnace slag. Further, an artificial aggregate prepared by granulating powder such as stone powder or slag is used. be able to.
骨材の比重はSL材組成物スラリーの比重よりも大きい
ことを要する。比重がスラリーの比重よりも小さい骨材
は、流し延べられたスラリーの表面に浮上し、得られた
硬化体の表面に突起を生ずる原因となり平滑な床面が得
られないので好ましくない。The specific gravity of the aggregate needs to be higher than that of the SL material composition slurry. Aggregates having a specific gravity smaller than the specific gravity of the slurry are not preferable because they will float on the surface of the cast slurry and cause protrusions on the surface of the obtained cured product, and a smooth floor cannot be obtained.
SL材組成物スラリーの比重は、通常1.8〜2.2の範囲で
あるので、本発明の組成物に使用される骨材は、比重が
1.8以上、好ましくは2.2以上であることが望ましい。Since the specific gravity of the SL material composition slurry is usually in the range of 1.8 to 2.2, the aggregate used in the composition of the present invention has a specific gravity of
It is desired to be 1.8 or more, preferably 2.2 or more.
本発明の方法において用いられる骨材は、調製された
SL材組成物スラリーの比重よりも小さい比重を有する固
形分を実質的に含まないものであることを要する。The aggregate used in the method of the present invention was prepared
It is necessary that the solid material having a specific gravity smaller than the specific gravity of the SL material composition slurry is substantially not included.
従って、いわゆる（天然ないし人工を問わず）軽量骨
材といわれるもの、たとえば、火山礫，軽石砂利，軽石
砂，軽石，膨張粘土，膨張けつ岩，蛭石，黒燿石焼成
品，真珠岩焼成品，石炭殻，膨張スラグ等のそれ自体ま
たは、これらが混入している骨材を使用することは好ま
しくない。Therefore, what is called so-called (natural or artificial) lightweight aggregate, for example, volcanic gravel, pumice gravel, pumice sand, pumice, expanded clay, expanded shale, vermiculite, black sinter, baked pearlite It is not preferable to use the product itself, the coal shell, the expanded slag, etc., or the aggregate in which these are mixed.
本発明で用いられる骨材の粒度は、最大粒径が5mm以
下で、粒度分布として粒径が0.3mm未満であるもの30重
量％以下、0.15mm未満であるもの10重量％以下、好まし
くは５重量％以下で、かつ、粗粒率が2.0〜3.5の範囲で
あるものがよい。As for the particle size of the aggregate used in the present invention, the maximum particle size is 5 mm or less, and the particle size distribution is less than 0.3 mm, 30% by weight or less, and the particle size distribution is less than 0.15 mm, 10% by weight or less, preferably 5%. It is preferable that the content is not more than wt% and the coarse particle ratio is in the range of 2.0 to 3.5.
粗粒率とは、目開きが0.15,0.3,0.6,1.2,2.5,5,10,2
0,40mmである９種類の各篩にとどまる骨材量の全試料量
に対するそれぞれの重量百分率の総和を100で割った値
であり、粒径が大きいものの割合が多くなるほど粗粒率
の値は大きくなる。Coarse grain ratio means the opening is 0.15,0.3,0.6,1.2,2.5,5,10,2
It is a value obtained by dividing the sum of the weight percentages of the aggregate amount remaining on each of the 9 sieves of 0,40 mm with respect to the total sample amount by 100, and the larger the particle size is, the larger the coarse particle ratio is. growing.
粒径が5mmを超える骨材を用いると、得られる硬化体
の表面に突起を生じて平滑な面が得られない。水比を高
めたり増粘剤の量を低減して、スラリー粘度を小さくす
ることによって、粒径が5mmを超える骨材を沈降させ、
骨材による突起をなくすことはできるが、ブリージング
が発生したり、骨材沈降によりポンプでの取扱いに支障
を来たしたり、得られる硬化体の表面にレイタンスを生
ずるので好ましくない。If an aggregate having a particle size of more than 5 mm is used, protrusions are generated on the surface of the obtained cured product, and a smooth surface cannot be obtained. By increasing the water ratio or reducing the amount of thickener to reduce the slurry viscosity, the aggregate with a particle size of more than 5 mm is sedimented,
Although it is possible to eliminate the protrusion due to the aggregate, it is not preferable because breathing occurs, sedimentation of the aggregate interferes with handling by a pump, and leitance occurs on the surface of the obtained cured body.
また、粒径0.3mm未満のものが30重量％を超えたり、
0.15mm未満のものが10重量％を超えると、SL材組成物ス
ラリーの流動性が悪化し、平滑な面が得られない。水比
を高めて流動性を確保しようとすると、ブリージングが
発生したり、硬化体の強度低下をもたらすので好ましく
ない。Also, if the particle size is less than 0.3 mm exceeds 30% by weight,
If less than 0.15 mm exceeds 10% by weight, the fluidity of the SL material composition slurry deteriorates and a smooth surface cannot be obtained. Attempting to secure fluidity by increasing the water ratio is not preferable because breathing may occur and the strength of the cured product may be reduced.
前記粒度条件を満たし、かつ、粗粒率が2.0〜3.5の範
囲である粒度の骨材を用いることによって安定したスラ
リー物性を得ることができる。Stable slurry physical properties can be obtained by using an aggregate having a particle size satisfying the particle size conditions and having a coarse particle ratio in the range of 2.0 to 3.5.
粗粒率が2.0未満であると、SL材組成物スラリーの流
動性が悪化して自己平滑性が失われ、硬化体に亀裂を生
じやすい。また、3.5を超えると同様にSL材組成物スラ
リーの流動性が悪化し、得られる硬化体の表面に凹凸を
生ずる。When the coarse particle ratio is less than 2.0, the fluidity of the SL material composition slurry is deteriorated, the self-smoothness is lost, and cracks are easily generated in the cured body. Further, when it exceeds 3.5, similarly, the fluidity of the SL material composition slurry is deteriorated and unevenness occurs on the surface of the obtained cured body.
骨材の配合比はSL材100重量部に対して、200〜500重
量部、好ましくは350〜450重量部の範囲がよい。The mixing ratio of the aggregate is 200 to 500 parts by weight, preferably 350 to 450 parts by weight, based on 100 parts by weight of the SL material.
骨材の配合比が200重量部未満であると得られる硬化
体は亀裂を生じたり、圧縮強度が過大となって建築基準
との関係で好ましくなく、経済的にも得策でない。ま
た、500重量部を超えると、スラリーの流動性が悪化し
て自己平滑性が失われ、得られる硬化体はその面が平滑
でなく、また、満足すべき強度が得られない。If the compounding ratio of the aggregate is less than 200 parts by weight, the resulting cured product will crack or have excessive compressive strength, which is not preferable in relation to building standards and is economically inadequate. On the other hand, when it exceeds 500 parts by weight, the fluidity of the slurry is deteriorated and the self-smoothness is lost, and the surface of the obtained cured body is not smooth, and satisfactory strength cannot be obtained.
本発明のSL材の施工方法は、前述のとおり、SL材と、
規定した粒度で、かつ、調製されたSL材組成物スラリー
の比重よりも小さい比重を有する固形分を実質的に含ま
ない骨材とを所定の比率で配合し、得られた配合物に水
または／およびポリマーディスパージョンを加えて混練
りして下地床の表面に流し延べる。The construction method of the SL material of the present invention is, as described above, the SL material,
With a specified particle size, and blended at a predetermined ratio with aggregates substantially free of solids having a specific gravity smaller than the specific gravity of the prepared SL material composition slurry, water or water in the resulting formulation. Add the / and polymer dispersion, knead, and cast on the surface of the base floor.
この際に、得られるSL材組成物スラリーのフロー値が
180〜230mmの範囲となるように水比を調節することが望
ましい。At this time, the flow value of the SL material composition slurry obtained is
It is desirable to adjust the water ratio so that it is in the range of 180 to 230 mm.
本発明におけるスラリーのフロー値は、住宅・都市整
備公団の方法に準じ、「水平に置いたみがき硝子（厚さ
5mm）上に塩化ビニル樹脂製円筒枠（内径50mm,高さ102m
m）を置き、枠内に混練試料200mlを充填し、同枠を引き
上げて試料の広がりが静止した後、直角２方向の直径を
測定し、その平均値をフロー値とする」方法で求めた。The flow value of the slurry in the present invention is in accordance with the method of the Housing and Urban Development Corporation "
5mm) vinyl chloride resin cylindrical frame (inner diameter 50mm, height 102m)
m) is placed, 200 ml of the kneading sample is filled in the frame, the frame is pulled up, and the spread of the sample is stopped. Then, the diameters in two directions at right angles are measured, and the average value is taken as the flow value. ” .
フロー値が180mm未満である場合には、スラリーの流
動性が不足し平滑面が得られない。また、230mmを超え
ると水量が過剰でブリージングを生じたり、骨材が沈降
して硬化体が不均一となり、硬化体表面にはレイタンス
を生ずる。When the flow value is less than 180 mm, the fluidity of the slurry is insufficient and a smooth surface cannot be obtained. On the other hand, if it exceeds 230 mm, the amount of water will be excessive and breathing will occur, or the aggregate will settle and the cured product will become non-uniform, and the surface of the cured product will have a leitance.
本発明のSL材の施工方法の一態様を示すと、攪拌機を
設けた調合槽、通常、モルタルミキサーに所定の比率で
SL材と骨材とを仕込み数分間攪拌した後、水を加え更に
数分間攪拌混練してSL材組成物スラリーを調製する。一
方、下地床の表面に予め前処理として、水や高分子エマ
ルジョンまたは高分子エマルジョン入りセメントノロ等
をプライマーとして散布または塗布する。次いで、SL材
組成物スラリーを適宜の容器あるいはモルタルポンプ等
を用いて、下地床の表面に流し延べトンボ等を用いて均
した後、水平床面を形成させ硬化させる。An example of the method for constructing the SL material of the present invention is shown in a mixing tank provided with a stirrer, usually in a mortar mixer at a predetermined ratio.
After SL material and aggregate are charged and stirred for several minutes, water is added and the mixture is stirred and kneaded for several minutes to prepare SL material composition slurry. On the other hand, as a pretreatment, water, a polymer emulsion, or a cement emulsion containing a polymer emulsion is sprayed or applied as a primer on the surface of the base floor in advance. Next, the SL material composition slurry is leveled on the surface of the base floor using a casting dragonfly or the like using an appropriate container or mortar pump, and then a horizontal floor surface is formed and cured.
１） 本発明の方法により、硬化体の圧縮強度やレベル
精度を損なうことなく、しかも経済的に厚さ10mm以上の
SL材の打設が可能である。1) By the method of the present invention, the thickness of 10 mm or more can be economically achieved without impairing the compression strength and level accuracy of the cured body.
It is possible to place SL material.
２） 不陸調整厚さが10mmを超える場合でも、一段階の
施工で厚打ちのSL材施工が可能で、施工時の大巾な省力
化と所要時間の短縮が可能となり、しかも、従来の方法
に比較して仕上がり床面の水平精度ならびに平坦さを向
上させることができるので従来のモルタルを使用する方
法の代替が可能となる。2) Even when the thickness of the unevenness adjustment exceeds 10 mm, thick SL material can be applied in one step, which greatly saves labor and shortens the time required for construction. Since the horizontal accuracy and flatness of the finished floor surface can be improved as compared with the method, it becomes possible to replace the method using the conventional mortar.
次に、実施例および比較例により説明する。 Next, examples and comparative examples will be described.
実施例１〜6,比較例１〜13. コンクリートスラブ（0.5×1.8m）の下地表面に、プ
ライマーとしてアクリル樹脂系エマルジョン「ペトロッ
ク150」（旭化成工業（株）製）（水３倍希釈液）を予
め塗布し乾燥させた。Examples 1 to 6, Comparative Examples 1 to 13. Acrylic resin emulsion "Petroque 150" (manufactured by Asahi Kasei Kogyo Co., Ltd.) as a primer on the surface of a concrete slab (0.5 x 1.8 m) as a primer (3-fold water dilution) Was previously applied and dried.
SL材として、セメント系SL材である「ワンツーフロア
ーＣ」（日東化学工業（株）製）を用い、これに表−２
に示す骨材を配合した。Cement-based SL material "One-to-Floor C" (manufactured by Nitto Kagaku Kogyo Co., Ltd.) was used as the SL material.
The aggregate shown in was mixed.
モルタル・ミキサーを用いて、表−２に示した配合比
で、まず、SL材と骨材とを３分間混合し、次に所定量の
水を加えて更に３分間混合混練し、スラリーを調製し
た。なお、表−２において「骨材比」は｛骨材/SL材｝
の、また、「水比」は｛水／（SL材＋骨材）｝のそれぞ
れ重量比を示す。Using a mortar mixer, at the compounding ratio shown in Table-2, first, SL material and aggregate are mixed for 3 minutes, then a predetermined amount of water is added, and the mixture is further kneaded for 3 minutes to prepare a slurry. did. In Table 2, "aggregate ratio" is {aggregate / SL material}.
The "water ratio" indicates the weight ratio of {water / (SL material + aggregate)}.
調製したスラリーはいったんホッパーに受け、前記下
地床上に30mm厚になるように、モルタルポンプによっ
て、また、ポンプでの取扱い性がよくないものは、バケ
ツを用いて流し延べ、トンボで均した後、自然硬化させ
た。The prepared slurry was once received by a hopper, so that the thickness on the base floor was 30 mm, by a mortar pump, and those not easily handled by the pump were cast by using a bucket and smoothed by a dragonfly, Naturally cured.
スラリーのモルタルポンプによる取扱い性、流し延べ
後のブリージング・骨材浮上の有無を観察した。The handling property of the slurry by a mortar pump and the presence or absence of breathing and floating of aggregate after casting were observed.
スラリーのフロー値は前記の方法で測定し、また、硬
化体の圧縮強度は型枠（40×40×160mm）にスラリーを
充填し、温度20℃，湿度70％で養生し、28日経過後の値
を測定した。The flow value of the slurry was measured by the above method, and the compressive strength of the cured product was filled in a mold (40 × 40 × 160 mm) with the slurry and cured at a temperature of 20 ° C. and a humidity of 70% for 28 days. The value was measured.
得られた硬化体表面の平坦さは、JASS 5T−604平坦さ
測定法に準じて測定し、距離1mに対する凹凸差の比の平
均差が、1/500より小さい場合を“良好”とした。な
お、比較例1,2および３については、突起や鳥肌状のた
め測定しなかった。The flatness of the surface of the obtained cured body was measured according to the JASS 5T-604 flatness measuring method, and the case where the average difference of the unevenness ratio with respect to the distance of 1 m was less than 1/500 was regarded as “good”. It should be noted that Comparative Examples 1, 2 and 3 were not measured because of protrusions and goose bumps.
硬化体表面の状態については、目視や指触によって判
定した。The state of the surface of the cured product was judged by visual observation or touch with a finger.
これらの各評価の結果を表−２に示した。 The results of each of these evaluations are shown in Table 2.
比較例１では、使用した骨材中に混在していた比重が
スラリー比重よりも小さい軽石がスラリーを流し延べた
後に表面に浮上し、硬化後突起として残った。In Comparative Example 1, pumice stone having a specific gravity smaller than the slurry specific gravity mixed in the used aggregate floated on the surface after the slurry was cast and spread, and remained as protrusions after curing.
比較例２は骨材としてパーライトを使用した場合で、
パーライトがスラリー表面に浮上したために硬化体の表
面がブツブツの鳥肌状となった。Comparative Example 2 is a case where perlite is used as an aggregate,
Since the pearlite floated up on the surface of the slurry, the surface of the cured product had a gritty goose bump.
比較例３は使用した骨材中に粒径5mm以上のものが含
まれていた場合で、トンボ掛けで押さえきれなかったこ
れらの粒子が硬化体表面に突起として残った。In Comparative Example 3, the aggregate used had a particle size of 5 mm or more, and these particles that could not be pressed by the registration marks remained as protrusions on the surface of the cured body.
比較例４は、通常のSL材用骨材として用いられる粒径
が1mm以下であるものを配合した場合で、水比が高いに
もかかわらず、スラリーのフロー値が小さく、ポンプで
の取扱い性が悪く、ブリージングが発生し、硬化体の表
面には不陸を生じ、圧縮強度は100kg/cm2未満であっ
た。Comparative Example 4 is a case where a particle having a particle size of 1 mm or less, which is used as an ordinary aggregate for SL material, is blended, and the slurry flow value is small despite the high water ratio, and it is easy to handle with a pump. Was poor, bleeding occurred, the surface of the cured product became uneven, and the compressive strength was less than 100 kg / cm 2 .
比較例５は粒径が0.3mm未満である骨材が30重量％を
超える場合で、スラリーは充分な流動性が得られず、ト
ンボがけによる不陸を生じ、硬化体には亀裂が発生し
た。In Comparative Example 5, the aggregate having a particle size of less than 0.3 mm exceeds 30% by weight, and the slurry does not have sufficient fluidity, causing unevenness due to dragonfly marks and cracks in the cured body. .
比較例６は比較例５と同じ骨材を用い、骨材比を下げ
水比を高めて混練した場合で、180mm以上のフロー値を
確保できたが、ブリージングが起こり、硬化後は白華と
共に亀裂も発生した。In Comparative Example 6, the same aggregate as in Comparative Example 5 was used, and when the aggregate ratio was lowered and the water ratio was increased and kneading was performed, a flow value of 180 mm or more could be secured, but bleeding occurred, and after curing, together with white flower Cracks also occurred.
比較例７は粒径が0.15mm未満である骨材が10重量％を
超える場合で、比較例５と同様にスラリーは充分な流動
性が得られず、トンボがけによる不陸を生じ、硬化体に
は亀裂が発生した。In Comparative Example 7, the aggregate having a particle size of less than 0.15 mm exceeds 10% by weight. As with Comparative Example 5, the slurry does not have sufficient fluidity, and unevenness due to dragonfly marks is generated, resulting in a cured product. There was a crack in it.
比較例８は比較例７と同じ骨材を用い、水比を高めて
混練した場合で、180mm以上のフロー値を確保できた
が、ブリージングが起こり、硬化後は白華にレイタンス
を伴い、亀裂も発生した。In Comparative Example 8, the same aggregate as in Comparative Example 7 was used, and when the kneading was carried out at a higher water ratio, a flow value of 180 mm or more could be secured, but bleeding occurred, and after curing, white flower was accompanied by leitance and cracking. Also occurred.
比較例９は粗粒率が2.0未満である場合で、スラリー
は充分な流動性が得られず、トンボがけによる不陸を生
じ、硬化体には亀裂が発生した。また圧縮強度は300kg/
cm2を超え過大であった。In Comparative Example 9, the coarse particle ratio was less than 2.0, the slurry did not have sufficient fluidity, and the unevenness due to the register mark occurred, and the hardened body was cracked. The compressive strength is 300 kg /
It was too large, exceeding cm 2 .
比較例10は粗粒率が3.5を超える場合で、骨材比を高
めることができるが、骨材が沈降してモルタルポンプに
よる取扱いが不能であったので、バケツを用いて流し延
べたが、ブリージングが起こり、硬化後は白華と共にレ
イタンスを生じた。In Comparative Example 10, when the coarse particle ratio exceeds 3.5, the aggregate ratio can be increased, but since the aggregate could not be handled by a mortar pump because it settled, it was cast using a bucket, Breathing occurred, and after curing, latance was produced together with white sinter.
比較例11は骨材比が2.0未満である場合で、硬化体に
多くの亀裂が発生した。In Comparative Example 11, the aggregate ratio was less than 2.0, and many cracks were generated in the cured body.
比較例12は骨材比が5.0を超える場合で、骨材が沈降
してモルタルポンプによる取扱いが不能であったのでバ
ケツを用いて流し延べたが、ブリージングが起こり、硬
化後は白華と共にレイタンスを生じた。In Comparative Example 12, when the aggregate ratio was more than 5.0, the aggregate sedimented and could not be handled by the mortar pump, so it was cast using a bucket, but bleeding occurred, and after curing, white flowers and laithance Occurred.
比較例13は水比が適切でなく、スラリーのフロー値が
過大となり、骨材が沈降してポンプによる取扱いが不能
であったのでバケツを用いて流し延べたが、ブリージン
グが起こり、硬化後は白華と共にレイタンスを生じた。
圧縮強度も小さい。In Comparative Example 13, the water ratio was not appropriate, the flow value of the slurry became excessive, and the aggregate settled and could not be handled by a pump, so it was cast using a bucket, but breathing occurred, and after curing, Raitance was produced with Shiroka.
The compressive strength is also small.
本発明の実施例１〜６は、いづれも良好な結果が得ら
れた。In each of Examples 1 to 6 of the present invention, good results were obtained.
実施例7. SL材として、「ワンツーフロアー１号」（石膏系SL
材，日東化学工業（株）製）を用い、実施例−１に準じ
た方法で処理した結果を表−２に示した。Example 7. As a SL material, "one-two floor No. 1" (plaster-based SL
Table 2 shows the results obtained by treating the material according to the method of Example-1 with a material manufactured by Nitto Chemical Industry Co., Ltd.
実施例８〜9. SL材として表−１に示した配合品を用い、それぞれ実
施例−１に準じた方法で処理した結果を表−２に示し
た。Examples 8 to 9. Table 2 shows the results obtained by using the compounded products shown in Table 1 as SL materials and treating them by the method according to Example 1 respectively.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−227751（ＪＰ，Ａ) 日本コンクリート工学協会編「コンク リート便覧」１版（昭53．７．20 ３ 刷）技報堂出版（株）Ｐ．193−202 日本材料学会編「コンクリート用化学 混和剤」初版（昭47．５．20）（株）朝 倉書店Ｐ．54−61 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 59227751 (JP, A) "Concrete handbook" edited by the Japan Concrete Institute, 1st edition (printed at 53.720.03) Gihodo Publishing Co., Ltd. P. 193-202 Edited by Japan Society of Materials, "Chemical admixture for concrete", first edition (Sho 47.5.20), Asakura Shoten Co., Ltd. 54-61
Claims (1)
る組成物を施工する方法において、セルフレベリング材
100重量部に対して、最大粒径が5mm以下で、粒度分布と
して粒径が0.3mm未満であるもの30重量％以下、0.15mm
未満であるもの10重量％以下で、かつ、粗粒率が2.0〜
3.5の範囲であり、調製されたセルフレベリング材組成
物スラリーの比重よりも小さい比重を有する固形分を実
質的に含まない骨材200〜500重量部を配合し、得られた
配合物に水または／およびポリマーディスパージョンを
加えて混練りし、セルフレベリング材組成物スラリーの
フロー値が180〜230mm［塩化ビニル樹脂製円筒枠（内径
50mm,高さ102mm,試料200ml）の引き上げ法による。］の
範囲であるように調製して、不陸調整厚さが10mmを超え
る下地床の表面に流し延べて硬化させる、セルフレベリ
ング材の施工方法。1. A method of applying a composition comprising a self-leveling material and an aggregate, comprising:
Maximum particle size of 5 mm or less and particle size distribution of less than 0.3 mm per 100 parts by weight 30% by weight or less, 0.15 mm
Less than 10% by weight and a coarse grain ratio of 2.0-
In the range of 3.5, 200-500 parts by weight of an aggregate substantially free of solid content having a specific gravity smaller than the specific gravity of the prepared self-leveling material composition slurry is compounded, and the resulting composition is mixed with water or water. / And polymer dispersion were added and kneaded, and the flow value of the self-leveling material composition slurry was 180 to 230 mm [Cylinder frame made of vinyl chloride resin (inner diameter
50mm, height 102mm, sample 200ml) ], And then cast on the surface of the base floor having a non-uniformity adjustment thickness of more than 10 mm to cure the self-leveling material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62322758A JP2510870B2 (en) | 1987-12-22 | 1987-12-22 | Construction method of self-leveling material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62322758A JP2510870B2 (en) | 1987-12-22 | 1987-12-22 | Construction method of self-leveling material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01164748A JPH01164748A (en) | 1989-06-28 |
| JP2510870B2 true JP2510870B2 (en) | 1996-06-26 |
Family
ID=18147313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62322758A Expired - Lifetime JP2510870B2 (en) | 1987-12-22 | 1987-12-22 | Construction method of self-leveling material |
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| Country | Link |
|---|---|
| JP (1) | JP2510870B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064509A (en) * | 2006-09-05 | 2008-03-21 | Ube Ind Ltd | Slurry execution method, slurry testing method and slurry tester |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008037677A (en) * | 2006-08-03 | 2008-02-21 | Taiheiyo Material Kk | Self-leveling composition |
| CN106673580A (en) * | 2016-12-30 | 2017-05-17 | 北京宝辰联合科技股份有限公司 | Cement-based self-leveling mortar |
| CN106810159B (en) * | 2017-01-21 | 2018-12-11 | 广东耐迪化工有限公司 | A kind of production method of gravity flowing levelling mortar terrace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59227751A (en) * | 1983-06-03 | 1984-12-21 | 日本セメント株式会社 | Cementitious self leveling material |
-
1987
- 1987-12-22 JP JP62322758A patent/JP2510870B2/en not_active Expired - Lifetime
Non-Patent Citations (2)
| Title |
|---|
| 日本コンクリート工学協会編「コンクリート便覧」１版（昭５３．７．２０３刷）技報堂出版（株）Ｐ．１９３−２０２ |
| 日本材料学会編「コンクリート用化学混和剤」初版（昭４７．５．２０）（株）朝倉書店Ｐ．５４−６１ |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064509A (en) * | 2006-09-05 | 2008-03-21 | Ube Ind Ltd | Slurry execution method, slurry testing method and slurry tester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01164748A (en) | 1989-06-28 |
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