JP2004169361A - Floor structure and construction method thereof - Google Patents
Floor structure and construction method thereof Download PDFInfo
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- JP2004169361A JP2004169361A JP2002335045A JP2002335045A JP2004169361A JP 2004169361 A JP2004169361 A JP 2004169361A JP 2002335045 A JP2002335045 A JP 2002335045A JP 2002335045 A JP2002335045 A JP 2002335045A JP 2004169361 A JP2004169361 A JP 2004169361A
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Landscapes
- Floor Finish (AREA)
Abstract
Description
【０００１】
【産業上の利用分野】
本発明は各種の床、例えば食品工場、薬品工場、電子部品工場など各種の工場や倉庫、あるいは駐車場などの床に防水性や耐磨耗性、耐スリップ性などの高度な性能が求められる各種の床と床の施工法に関するものであり、詳しくは膨れ防止機能を持つ床用調整材からなる下地層に熱硬化性樹脂と繊維補強材とからなる強化樹脂層が重層して仕上げられている床構造体とその施工法に関するものである。
【０００２】
【従来の技術】
従来、防水性、耐薬品性、防塵性などを求められる食品、薬品、電子部品などの工場、倉庫等の床にはエポキシ樹脂系、ウレタン樹脂系などの樹脂系塗り床が主として使用されている。
【０００３】
これらの床は下地コンクリートを打設し、１ヶ月程度放置して乾燥させたのち、プライマーを塗布し、中塗り、上塗りの工程を経て仕上げられるか、施工管理の不備などでコンクリート下地が充分乾燥していない状態で施工する場合があり、このような場合には下地の水分が逃げ場を失うために塗り床の下から突き上げ塗り床施工面に膨れが発生するケースが多発している。このためにコンクリート下地を十分乾燥させるため止むを得ず長い工期をかけて施工する状況にある。
【０００４】
このような問題は、優れた耐水性、耐久性、耐磨耗性、耐スリップ性などの性能を備えるため、駐車場、倉庫、その他の場所に広く採用されている強化樹脂層を採用した防水床においても発生している。
【０００５】
本発明はこのような状況に鑑み、鋭意検討した結果なされたものであり、下地調整層、下塗り層、プライマー層、緩衝層、強化樹脂層、上塗り層が順次施工されている床構造体とその施工法に係り、前記従来において問題となつていた問題を解決したものである。
【０００６】
【特許文献１】特開平４−１４２３２３
【特許文献２】特開平５−３３３０９
【０００７】
【発明が解決しようとする課題】
本発明は前記のような課題、即ち従来の樹脂系の床施工において改良が求められていた課題、即ち施工期間の短縮対策、フクレ現象問題ならびにひび割れ追従性等の多くの課題を解決せんとするものである。
【０００８】
【課題を解決するための手段】
前記のような課題を解決するため、本発明に係わる床用調整材は水系エポキシ樹脂からなる下地調整層、エポキシ樹脂からなる下塗り層、プライマー層、緩衝層並びに熱硬化性樹脂と繊維強化材からなる強化樹脂層、並びに上塗り層を形成して仕上げられた床構造体とその施工法により前記従来の課題を解決したものである。
【０００９】
床用調整材は水系エポキシ樹脂エマルジョンと、セメントプレミックスとが配合されたものなどが使用され、鏝により下地表面に０．２〜１．２ｋｇ／ｍ２が塗工される。
【００１０】
水系エポキシ樹脂エマルジョンはいわゆる自己乳化型で代表されるエポキシ樹脂のエマルジョン、あるいはエポキシ樹脂に水溶性硬化剤を配合して乳化したものであり、セメントプレミツクスは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等に必要により骨材、例えば硅石粉、炭酸カルシウム、硅砂、アルミナ粉、ガラス粉などを配合したものが使用される。
【００１１】
エポキシ樹脂として、ビスフェノールＡ型、同Ｆ型などのビスフェノール型エポキシ樹脂、ノボラック型エポキシ樹脂、脂肪族エポキシ樹脂など公知のエポキシ樹脂が使用できる。硬化剤としてはトリエチルテトラミンなど脂肪族アミン、及びその変性脂肪族アミン、ポリアミドアミン、フェニレンジアミンなどの芳香族アミン、その変性芳香族アミンなどが使用される。水系エポキシ樹脂エマルジョンとセメントプレミックスの配合割合は、固形分比で１対３〜１０が適している。
【００１２】
下地調整材の塗工は１回であるよりは２回のほうが下地コンクリートの巣穴を埋める点で優れるため、施工期間、施工工数などの面で制約がなければ、２回塗工することが好ましい。鏝、ブラシ、ローラーなどの塗布具で０．２〜１．２ｋｇ／ｍ２が下地に塗工される。
【００１３】
該下地調整材は水分並びにコンクリートの成分と馴染みがあるため、コンクリートの多孔質な露出面に入り込みやすく、表面層の空隙部分を充填するとともに、セメントプレミツクスが同一成分のコンクリートと密着するため、接合強度を高める効果をもたらし、エポキシ樹脂の硬化により強固に一体とすることができる。
【００１４】
下地調整材はコンクリート、発泡コンクリート、石材等の床下地に塗工されるが、下地として汚れがないこと、ひび割れがないこと、植物油、鉱物油等がしみこんでいないことなどが必要になる。汚れが有る場合は洗剤による洗浄、ひび割れが有る場合はセメント配合物による充填、オイル等については中性洗剤による洗浄等の手段により調整できる。
【００１５】
下地調整材が塗工され下地調整層が形成されたのち、下塗り材が０．１〜１．０ミリ厚に塗工され下塗り層が仕上げられる。該下塗り層は下地の水分の遮断層として機能させるもので、下地調整層に対して密着性に優れることが求められ、エポキシ樹脂系の下塗り材の使用が適合している。
【００１６】
該下塗り材にはエポキシ樹脂と硬化剤、又はこれに硅石粉、炭酸カルシウム、タルク粉などを配合したもが使用され、エポキシ樹脂としてはビスフエノールＡタイプが耐水性、作業性の点から適している。該下塗り層の表面にプライマーが塗布されプライマー層が設けられる。該プライマーにはウレタン樹脂、エポキシ樹脂などの樹脂成分を有機溶剤に溶解させた樹脂溶液が使用される。
これらのプライマーのなかでも１液湿気硬化タイプのウレタン樹脂系プライマーであれば、調合などの作業が不要で、単に塗布するだけで下層に浸透するとともに塗布層が形成されるため簡便に利用できることから施工に適している。
【００１７】
また、該プライマーには適宜、接着効果をより高めるために水硬性セメント、例えばポルトランドセメント、白色ポルトランドセメント、高アルミナ含有速硬化型セメントなどを配合してもよい。
【００１８】
該プライマー層上に緩衝層が設けられる。緩衝層は駆体や下地のひび割れや寸法変化、その他の要因による動きなどによる応力が強化樹脂層にまで波及することを回避するために設けられるもので、応力を遮断、吸収する特性が求められる。このため、軟質で好ましくはＪＩＳＡ６０２１に規定の−２０〜６０℃の温度条件下における破断時のつかみ間の引っ張り伸び率が３０％以上の性状の樹脂、具体的な例としてウレタン樹脂、アクリル樹脂、アクリルウレタン樹脂、不飽和ポリエステル樹脂、ビニルエステル樹脂、変性シリコーン樹脂、シリコーン樹脂、などの樹脂が挙げられる。
【００１９】
該緩衝層の厚みは緩衝効果を確保し、耐久性を持たせるために少なくとも０．５ミリ以上あることが望ましい。
該緩衝層の上に強化樹脂層が形成される。該強化樹脂層は、熱硬化性樹脂と繊維強化材とが複合化されて形成されるものであつて、該熱硬化性樹脂には、周知の不飽和ポリエステル樹脂、エポキシ樹脂、ビニルエステル樹脂、ウレタン樹脂、その他硬化性の樹脂が硬化剤とともに使用される。また、熱硬化性樹脂には仕上がり外観を良くするために顔料を含むトナーを配合することが行われる。
【００２０】
顔料には酸化チタン、ベンガラ、酸化鉄、カーボンブラック等或いはこれらの混合物として、目的とする色調に応じて選定される。顔料はそのまま配合する場合や、液状媒体に微粒子状態に分散したペーストとして使用する場合がありるが、後者の使用方法が簡便に配合できるため施工作業に適している。
【００２１】
繊維強化材としては、各種の繊維素材、例えばナイロン、ビニロン、ポリエステル、アクリル、アラミド、カーボンファイバーなどの合成繊維材、ガラス繊維、石綿繊維、岩綿繊維など無機質繊維材、麻など天然繊維材などが使用されるが、これらの中でも、坪量０．３〜０．６ｋｇ／ｍ２のガラス繊維、合成繊維が取り扱い性、施工性、強度、入手性などの点から好ましい。
【００２２】
ガラス繊維、合成繊維には平織り状、マット状、チップ状の製品があり、それらの形態で使用することができる。なかでもマット状の形態であれば液状樹脂の浸透性に優れ、塗布された熱硬化性樹脂が繊維間に浸透し易く施工に好都合である。更にロール状に巻き取られたものであれば、熱硬化性樹脂を塗布したのち、ロール状の繊維強化材を緩衝層の表面に広げて熱硬化性樹脂の塗布面に重ね、さらに熱硬化性樹脂を塗布して繊維強化材の内部に浸透させ、硬化させて複合化させ強化樹脂層を形成させるか、あるいはロール状に巻かれた繊維強化材を緩衝層の表面に広げたのち、熱硬化性樹脂を塗布して、繊維強化材の間に浸透させるとともに硬化させて繊維強化材と熱硬化性樹脂とを複合化させて強化樹脂層を形成させることができる。
【００２３】
マット状の繊維強化材では坪量０．３〜０．６ｋｇ／ｍ２の素材が、補強効果、取り扱い性、熱硬化性樹脂の浸透性や作業性などの点から使用に適している。
【００２４】
強化樹脂層の上に耐スリップ性、耐磨耗性などの特性を確保するために必要により骨材が散布される。骨材には、硅砂、碍子のリサイクル粉末、アルミナ粉、ガラス粉、川砂、山砂、海砂、カオリン、クレー、製鉄ダスト、その他ガラス、その他セラミックの粉砕物等が使用される。
【００２５】
これらの骨材は単独で使用されるか、適宜、複数の成分が混合されて使用される。該骨材の粒子径は０．０５〜３ｍｍ、好ましくは０．１〜２ｍｍの粒子サイズが使用に適合する。０．０５ｍｍ以下では作業性が悪くなり好ましくない。また３ｍｍ以上では作業性が劣り、仕上がりがよくないため好ましくない。
【００２６】
骨材は強化樹脂層を形成させる際の熱硬化性樹脂が硬化する過程で散布され、硬化とともに強化樹脂層の内部に沈下もしくは一部沈下させて保持させることが望ましい。
【００２７】
強化樹脂層が硬化したのち、仕上がり外観、耐候性の確保などのために、必要により上塗り層が施工される。上塗り層としてフッソ樹脂、アクリル樹脂、アクリルシリコン樹脂、アクリルウレタン樹脂、不飽和ポリエステル樹脂などの耐候性に優れる塗料を塗布量０．１〜０．６ｋｇ／ｍ２塗布する方法が採用される。なかでもサイズが１〜１０ミリの雲母片、プラスチッマ片、金属片など薄片を混入させた上塗り層であれば薄片により太陽光を遮蔽する効果により表面層および強化樹脂層の劣化を防止できる。
【００２８】
これらの樹脂には、必要により増粘剤、充填剤、レベリング剤、消泡剤、分散剤などが添加されて施工に都合のよい粘度、硬化性、塗布性などが調整されればよい。
【００２９】
【発明の実施の形態】
以下具体的な実施例について説明する。
【実施例１】
直径２００ミリ、高さ１２０ミリの型中に水／ポルトランドセメント比が０．７のコンクリートを打設して、気中養生７日後（含水率９％）に実施例、比較例の各施工試験を行い、２０℃で７日間養生して試験体を調製した。
第１回目の下地調整材として、エポキシ樹脂（アイカ工業株式会社製ＪＥＸ−１１０）１００重量部にポルトランドセメントに８号硅砂を重量比で１対１の比率で配合した配合材を１００重量部を配合したものを０．２ｋｇ／ｍ２を鏝で塗布して硬化させたのち、２回目の下地調整材として、エポキシ樹脂（アイカ工業株式会社製ＪＥＸ−１１０）１００重量部にポルトランドセメントに対して８号硅砂を重量比で１対１で配合した配合材２００重量部を配合した下地調整材を０．６ｋｇ／ｍ２鏝で塗布し、硬化させて下地調整層を形成した。
ついで、規定量の硬化剤を配合したエポキシ樹脂（アイカ工業株式会社製ＪＥ−２５２０）からなる下塗り材を鏝にて１．０ｋｇ／ｍ２塗布し、硬化させて下塗り層を形成した。
更に、ウレタン樹脂にポルトランドセメントを配合した１液型プライマー （アイカ工業株式会社製ＪＵ−１２７０）を０．２ｋｇ／ｍ２塗布したのち、ＪＩＳＡ６０２１規定の−２０〜６０℃の温度条件下における引っ張り伸び率が３０％以上の軟質の不飽和ポリエステル樹脂（アイカ工業株式会社製ＪＥ−２０１０）を１．０ｋｇ／ｍ２塗布・硬化させて緩衝層を形成した。
このあと更に、該緩衝層の表面に坪量４５０ｇ／ｍ２のガラス繊維マットを配置した上に、不飽和ポリエステル樹脂（アイカ工業株式会社製ＪＥ−２０００）を１．５ｋｇ／ｍ２塗布して該緩衝層の表面まで至らしめるとともに、該ガラス繊維マット内部に十分に浸透させ、硬化させる過程で５号硅砂を１．０ｋｇ／ｍ２散布し、該硅砂を一部沈下させた状態で硬化した強化樹脂層を形成した。
ついで、不飽和ポリエステル樹脂（アイカ工業株式会社製ＪＥ−２０００）１００重量部に灰色の着色トナーを１０重量部配合した上塗り材を０．５ｋｇ／ｍ２塗布・硬化させて上塗り層を形成した。
最後にトップコートとして不飽和ポリエステル樹脂（アイカ工業株式会社製ＪＥ−２０８０）を０．４ｋｇ／ｍ２塗布・硬化させて実施例１の床構造体を仕上げた。
【００３０】
比較例１
実施例１において、下塗り層を施工しなかった以外は全て実施例１と同一の工程並びに施工で、比較例１の床を施工した。
【００３１】
比較例２
実施例１における下地調整層を並びに下塗り層を施工せずに、実施例１に使用した試験体に、実施例１と同一の工程並びに施工で、プライマー、緩衝層、強化樹脂層、骨材散布、上塗り並びにトップコートを順次施工して、比較例２の床を施工して仕上げた。
実施例、比較例の床試験体について、膨れ促進試験を実施した結果は表１の通りであつた。
【００３２】
【表１】
塗膜促進試験
実施例及比較例で作成した試験体の塗膜とコンクリート面の境界面より１センチ下までのコンクリート部分を５０℃の温水中に浸漬した状態で、経時的に塗膜の異常がでるかどうか、膨れある場合はその面積
比率を測定する。
【００３３】
【発明の効果】
従来の樹脂系床の施工では駆体表面など下地にプライマー、あるいは緩衝層を介して強化樹脂層などの手順を経て施工していたが、下地から表面層に向けて突き上げる水分により密着性が低下するため、膨れが発生していた。
しかしながら本発明になる床構造体並びにその施工法では、下地調整層と下塗り層を形成したのち、プライマーを介して緩衝層を設け、ついで強化樹脂層を施工したものであるため、該下塗り層が下地水分の遮断層として機能し効果的に遮蔽作用を発揮するために、前記のような塗膜の膨れの発生をなくすことができる。殊に下地調整材が２回塗布された場合には下地コンクリートの巣穴の充填が確実になされるため、膨れ抑止効果高められる。
【００３４】
また、緩衝層に伸びのある樹脂が使用されるために下地のひび割れなどに起因する動きを柔軟に吸収、遮断してしまうため強化樹脂層のクラックなどを防止することができ耐久性のある床構造体が得られる。
更に強化樹脂層の上に骨材を散布して固定させた床構造体では、耐磨耗性、耐スリップ性が高められたものに仕上げられるため、人の歩行、車の走行に安全性が向上するとともに耐用年数を長くすることができる。[0001]
[Industrial applications]
According to the present invention, various floors, for example, various factories such as food factories, pharmaceutical factories, and electronic component factories, warehouses, and floors such as parking lots, are required to have high performance such as waterproofness, abrasion resistance, and slip resistance. It relates to various floors and floor construction methods, and more specifically, a reinforced resin layer consisting of a thermosetting resin and a fiber reinforcing material is overlaid on an underlayer consisting of a floor adjustment material having a blister prevention function. Floor structure and its construction method.
[0002]
[Prior art]
Conventionally, resin-coated floors such as epoxy resin and urethane resin are mainly used for floors of factories and warehouses for foods, chemicals, electronic components, etc., which require waterproofness, chemical resistance, dust resistance, etc. .
[0003]
These floors are laid with concrete foundation and left to dry for about one month, then applied with a primer, intermediate coating and top coating, or finished, or the concrete foundation is sufficiently dried due to inadequate construction management etc. There is a case where the construction is not performed, and in such a case, since the moisture of the foundation loses a place to escape, the case where the coating floor is swelled up from below the painted floor frequently occurs. For this reason, in order to dry the concrete foundation sufficiently, it is unavoidable that the construction takes a long construction period.
[0004]
Such problems include excellent water resistance, durability, abrasion resistance, slip resistance and other properties, so waterproofing with a reinforced resin layer widely used in parking lots, warehouses and other places It also occurs on the floor.
[0005]
In view of such circumstances, the present invention has been made as a result of intensive studies, and a floor structure and a floor structure in which a base adjustment layer, an undercoat layer, a primer layer, a buffer layer, a reinforced resin layer, and an overcoat layer are sequentially applied. According to the construction method, the above-mentioned conventional problem has been solved.
[0006]
[Patent Document 1] JP-A-4-142323
[Patent Document 2] JP-A-5-33309
[0007]
[Problems to be solved by the invention]
The present invention seeks to solve many of the above-mentioned problems, that is, problems that have been required to be improved in conventional resin-based floor construction, namely, measures for shortening the construction period, blistering phenomena, and crack followability. Things.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the floor adjusting material according to the present invention is composed of a base adjustment layer made of an aqueous epoxy resin, an undercoat layer made of an epoxy resin, a primer layer, a buffer layer, and a thermosetting resin and a fiber reinforced material. The above-mentioned conventional problems have been solved by a floor structure finished by forming a reinforced resin layer and an overcoat layer, and a construction method thereof.
[0009]
As the floor conditioning material, a mixture of a water-based epoxy resin emulsion and a cement premix is used, and 0.2 to 1.2 kg / m 2 is applied to the surface of the base using a trowel.
[0010]
The water-based epoxy resin emulsion is an emulsion of an epoxy resin represented by a so-called self-emulsifying type, or an emulsion obtained by mixing a water-soluble curing agent with an epoxy resin, and the cement premix is made of Portland cement, early-strength Portland cement, If necessary, an aggregate such as silica stone powder, calcium carbonate, silica sand, alumina powder, glass powder, or the like is blended with strong Portland cement or the like.
[0011]
As the epoxy resin, known epoxy resins such as bisphenol type epoxy resins such as bisphenol A type and F type, novolak type epoxy resin, and aliphatic epoxy resin can be used. As the curing agent, aliphatic amines such as triethyltetramine, and modified aliphatic amines thereof, aromatic amines such as polyamidoamine and phenylenediamine, and modified aromatic amines thereof are used. The mixing ratio of the aqueous epoxy resin emulsion and the cement premix is preferably 1: 3 to 10 in terms of solid content ratio.
[0012]
Since the application of the foundation adjustment material is better in filling the burrow of the foundation concrete, it is better to apply it twice if there are no restrictions in terms of the construction period, the number of construction steps, etc. preferable. 0.2 to 1.2 kg / m 2 is applied to the base with an applicator such as a trowel, brush, roller, or the like.
[0013]
Since the base adjustment material is familiar with moisture and the components of concrete, it easily enters the porous exposed surface of the concrete, and fills the voids of the surface layer, and the cement premix adheres to the concrete of the same component, The effect of increasing the bonding strength is brought about, and the epoxy resin can be hardened and integrated integrally.
[0014]
The base adjustment material is applied to a floor base such as concrete, foamed concrete, and stone, and it is necessary that the base be free of dirt, cracks, and soaked with vegetable oil, mineral oil, and the like. If there is dirt, it can be adjusted by means of washing with a detergent, if there is cracking, it can be adjusted by filling with a cement composition, and oil and the like can be adjusted by washing with a neutral detergent.
[0015]
After the base adjustment material is applied and the base adjustment layer is formed, the undercoat material is applied to a thickness of 0.1 to 1.0 mm to finish the undercoat layer. The undercoat layer functions as a base moisture-blocking layer, and is required to have excellent adhesion to the base adjustment layer, and is suitable for use with an epoxy resin-based undercoat material.
[0016]
As the undercoating material, an epoxy resin and a curing agent, or a mixture of silica powder, calcium carbonate, talc powder and the like is used, and as the epoxy resin, bisphenol A type is suitable from the viewpoint of water resistance and workability. I have. A primer is applied to the surface of the undercoat layer to provide a primer layer. As the primer, a resin solution in which a resin component such as a urethane resin or an epoxy resin is dissolved in an organic solvent is used.
Among these primers, a one-component moisture-curable urethane resin-based primer requires no work such as preparation, and can be easily used because it simply penetrates into the lower layer and forms a coating layer simply by coating. Suitable for construction.
[0017]
In addition, a hydraulic cement, for example, Portland cement, white Portland cement, high alumina-containing quick-setting cement, or the like may be appropriately added to the primer in order to further enhance the adhesive effect.
[0018]
A buffer layer is provided on the primer layer. The buffer layer is provided to prevent the stress caused by cracks and dimensional changes of the carcass and groundwork, movement due to other factors, etc. from spreading to the reinforced resin layer, and it is required to have the property of blocking and absorbing the stress . For this reason, the resin is soft and preferably has a tensile elongation between grips of 30% or more at break under a temperature condition of −20 to 60 ° C. specified in JIS A6021, specifically, urethane resin, acrylic resin, Resins such as acrylic urethane resin, unsaturated polyester resin, vinyl ester resin, modified silicone resin, silicone resin, and the like are included.
[0019]
The thickness of the buffer layer is desirably at least 0.5 mm or more in order to secure a buffering effect and provide durability.
A reinforced resin layer is formed on the buffer layer. The reinforced resin layer is formed by compounding a thermosetting resin and a fiber reinforcing material, and the thermosetting resin includes a well-known unsaturated polyester resin, epoxy resin, vinyl ester resin, Urethane resin and other curable resins are used together with a curing agent. Further, a toner containing a pigment is mixed with the thermosetting resin in order to improve the finished appearance.
[0020]
The pigment is selected as titanium oxide, red iron oxide, iron oxide, carbon black or the like or a mixture thereof according to the desired color tone. The pigment may be blended as it is or used as a paste dispersed in a liquid medium in the form of fine particles. However, the latter method can be easily blended, and is suitable for construction work.
[0021]
As the fiber reinforcing material, various fiber materials, for example, synthetic fiber materials such as nylon, vinylon, polyester, acrylic, aramid, carbon fiber, inorganic fiber materials such as glass fiber, asbestos fiber, rock wool fiber, and natural fiber materials such as hemp Among them, glass fibers and synthetic fibers having a basis weight of 0.3 to 0.6 kg / m 2 are preferable from the viewpoint of handleability, workability, strength, availability, and the like.
[0022]
Glass fibers and synthetic fibers include plain weave, mat, and chip products, which can be used in those forms. Above all, a mat-like form is excellent in permeability of the liquid resin, and the applied thermosetting resin easily permeates between the fibers, which is convenient for construction. If it is wound into a roll, apply the thermosetting resin, then spread the roll-shaped fiber reinforcement on the surface of the buffer layer and layer on the thermosetting resin application surface. Apply the resin and infiltrate into the fiber reinforcement and cure it to form a reinforced resin layer by compounding it, or spread the fiber reinforcement rolled up on the surface of the buffer layer and then heat-curing The reinforced resin layer can be formed by applying a hardening resin and allowing it to penetrate between the fiber reinforced materials and cure it, thereby compounding the fiber reinforced material and the thermosetting resin.
[0023]
In the case of a mat-like fiber reinforced material, a material having a basis weight of 0.3 to 0.6 kg / m 2 is suitable for use from the viewpoints of reinforcing effect, handleability, permeability of a thermosetting resin and workability.
[0024]
Aggregate is sprayed on the reinforced resin layer as needed to secure properties such as slip resistance and abrasion resistance. As the aggregate, silica sand, recycled powder of insulator, alumina powder, glass powder, river sand, mountain sand, sea sand, kaolin, clay, iron-made dust, other glass, and other crushed products of ceramic are used.
[0025]
These aggregates may be used alone or as a mixture of a plurality of components as appropriate. A particle size of the aggregate of 0.05-3 mm, preferably 0.1-2 mm, is suitable for use. When the thickness is less than 0.05 mm, the workability deteriorates, which is not preferable. On the other hand, if the thickness is 3 mm or more, the workability is inferior and the finish is not good.
[0026]
It is desirable that the aggregate is sprayed in the process of curing the thermosetting resin when the reinforced resin layer is formed, and is settled or partially settled and held inside the reinforced resin layer with the curing.
[0027]
After the reinforced resin layer is cured, an overcoat layer is applied as necessary to ensure a finished appearance and weather resistance. As the overcoat layer, a method in which a coating material having excellent weather resistance such as a fluorine resin, an acrylic resin, an acrylic silicon resin, an acrylic urethane resin, and an unsaturated polyester resin is applied in an application amount of 0.1 to 0.6 kg / m 2 is employed. Above all, in the case of an overcoating layer in which flakes such as mica pieces, plastic pieces and metal pieces having a size of 1 to 10 mm are mixed, deterioration of the surface layer and the reinforced resin layer can be prevented by the effect of shielding sunlight by the flakes.
[0028]
These resins may be added with a thickener, a filler, a leveling agent, an antifoaming agent, a dispersant, and the like, if necessary, to adjust viscosity, curability, applicability, etc., which are convenient for construction.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific examples will be described.
Embodiment 1
Concrete having a water / Portland cement ratio of 0.7 was poured into a mold having a diameter of 200 mm and a height of 120 mm, and after 7 days of aerial curing (9% water content), execution tests of the examples and comparative examples And cured at 20 ° C. for 7 days to prepare test specimens.
As the first base adjustment material, 100 parts by weight of a compounding material obtained by mixing Portland cement with No. 8 silica sand at a weight ratio of 1: 1 to 100 parts by weight of an epoxy resin (JEX-110 manufactured by Aika Kogyo Co., Ltd.) 0.2 kg / m 2 of the compound was applied with a trowel and cured, and then as a second base adjustment material, 100 parts by weight of an epoxy resin (JEX-110 manufactured by Aika Kogyo Co., Ltd.) was added to Portland cement. A base adjustment material containing 200 parts by weight of a compounding material in which No. 8 silica sand was mixed at a weight ratio of 1 to 1 was applied with a 0.6 kg / m 2 iron and cured to form a base adjustment layer.
Then, an undercoat material composed of an epoxy resin (JE-2520 manufactured by Aika Kogyo Co., Ltd.) mixed with a prescribed amount of a curing agent was applied at 1.0 kg / m 2 with a trowel and cured to form an undercoat layer.
Further, after applying 0.2 kg / m 2 of a one-component primer (JU-1270 manufactured by Aika Kogyo Co., Ltd.) in which urethane resin is blended with portland cement, the tensile elongation under the temperature condition of −20 to 60 ° C. specified by JISA6021 is applied. A buffer layer was formed by applying and curing a soft unsaturated polyester resin having a ratio of 30% or more (JE-2010 manufactured by Aika Kogyo Co., Ltd.) at 1.0 kg / m 2 .
Thereafter, a glass fiber mat having a basis weight of 450 g / m 2 was disposed on the surface of the buffer layer, and 1.5 kg / m 2 of an unsaturated polyester resin (JE-2000 manufactured by Aika Kogyo Co., Ltd.) was applied. In the process of reaching the surface of the buffer layer and sufficiently penetrating into the glass fiber mat and curing, 1.0 kg / m 2 of No. 5 silica sand was sprayed, and the silica sand was cured in a state where it was partially settled. A reinforced resin layer was formed.
Then, 0.5 kg / m 2 of an overcoat material obtained by mixing 10 parts by weight of a gray colored toner with 100 parts by weight of an unsaturated polyester resin (JE-2000 manufactured by Aika Kogyo Co., Ltd.) was applied and cured to form an overcoat layer.
Finally, 0.4 kg / m 2 of an unsaturated polyester resin (JE-2080 manufactured by Aika Kogyo Co., Ltd.) was applied and cured as a top coat to complete the floor structure of Example 1.
[0030]
Comparative Example 1
In Example 1, the floor of Comparative Example 1 was constructed in the same steps and construction as in Example 1 except that the undercoat layer was not constructed.
[0031]
Comparative Example 2
The primer, the buffer layer, the reinforced resin layer, and the aggregate were sprayed on the specimen used in Example 1 in the same process and execution as in Example 1 without applying the base adjustment layer and the undercoat layer in Example 1. , A top coat and a top coat were sequentially applied, and the floor of Comparative Example 2 was applied and finished.
Table 1 shows the results of the swelling acceleration test performed on the floor specimens of the examples and comparative examples.
[0032]
[Table 1]
Coating acceleration test The concrete part of the test piece prepared in the Examples and Comparative Examples up to 1 cm below the interface between the coating and the concrete surface was immersed in warm water at 50 ° C. If there is swelling, measure the area ratio.
[0033]
【The invention's effect】
In the conventional resin floor construction, the primer was applied to the base such as the surface of the vehicle body, or through a procedure such as a reinforced resin layer via a buffer layer, but the adhesion dropped due to the water pushing up from the base toward the surface layer Therefore, swelling occurred.
However, in the floor structure according to the present invention and the method of construction thereof, after forming the base adjustment layer and the undercoat layer, a buffer layer is provided via a primer, and then the reinforced resin layer is constructed. In order to function as a base moisture blocking layer and effectively exhibit a shielding effect, it is possible to eliminate the occurrence of blistering of the coating film as described above. In particular, when the base adjustment material is applied twice, the burrows of the base concrete are surely filled, and the swelling suppressing effect is enhanced.
[0034]
In addition, since a stretchable resin is used for the buffer layer, it can flexibly absorb and block movements caused by cracks in the base, so that cracks in the reinforced resin layer can be prevented and a durable floor. A structure is obtained.
In addition, the floor structure where the aggregate is sprayed and fixed on the reinforced resin layer is finished with improved abrasion resistance and slip resistance, so that safety for human walking and car traveling is improved. It is possible to improve and extend the service life.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002335045A JP2004169361A (en) | 2002-11-19 | 2002-11-19 | Floor structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002335045A JP2004169361A (en) | 2002-11-19 | 2002-11-19 | Floor structure and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009179989A (en) * | 2008-01-30 | 2009-08-13 | Dic Corp | Floor structure |
| JP2011127317A (en) * | 2009-12-17 | 2011-06-30 | Aica Kogyo Co Ltd | Waterproof structure and method for constructing the same |
| JP2017044000A (en) * | 2015-08-27 | 2017-03-02 | 株式会社四国ライト | Color road surface sign material |
-
2002
- 2002-11-19 JP JP2002335045A patent/JP2004169361A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009179989A (en) * | 2008-01-30 | 2009-08-13 | Dic Corp | Floor structure |
| JP2011127317A (en) * | 2009-12-17 | 2011-06-30 | Aica Kogyo Co Ltd | Waterproof structure and method for constructing the same |
| JP2017044000A (en) * | 2015-08-27 | 2017-03-02 | 株式会社四国ライト | Color road surface sign material |
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