JP3918160B2

JP3918160B2 - Method of assembling formwork member for forming concrete decorative wall surface

Info

Publication number: JP3918160B2
Application number: JP04200797A
Authority: JP
Inventors: 浩丸井; 康則吉田; 誠多賀; 敦夫植村
Original assignee: JSP Corp
Current assignee: JSP Corp
Priority date: 1997-02-26
Filing date: 1997-02-26
Publication date: 2007-05-23
Anticipated expiration: 2017-02-26
Also published as: JPH10238110A

Description

【０００１】
【発明の属する技術分野】
本発明は、多数のタイル等の化粧片が固着されたコンクリート化粧壁面を、型枠の内面に化粧片を仮止め保持して型枠の内側にコンクリートを打設する形で、施工する際に、化粧片を仮止め保持するコンクリート化粧壁面形成用型枠部材の組立方法に関する。
【０００２】
【従来の技術】
多数のタイル等の化粧片が固着されたコンクリート化粧壁面の施工方法として、例えば特公昭６２−２４５８９号公報等に開示された方法では、合成樹脂発泡体に多数の化粧片嵌合用凹部を成形して、この合成樹脂発泡体を合板等に固定して型枠を構成し、多数の化粧片を化粧片嵌合用凹部に嵌め込む形で型枠の内面に仮止め保持させ、型枠の内面側にコンクリートを打設することにより、多数の化粧片をコンクリート表面に固着させている。
【０００３】
【発明が解決しようとする課題】
上述の施工方法では、多数の化粧片を効率的にコンクリート表面に固着させることができるが、合成樹脂発泡体が柔らかすぎると、コンクリート打設時に合成樹脂発泡体が変形して、コンクリート表面が膨らんで形成されたり、化粧片間の目地仕上用凹部が十分な深さに形成されない等の問題が生じ、逆に、合成樹脂発泡体が固すぎると、化粧片嵌合用凹部への化粧片の仮止作業に支障を来たしたり、設置時の衝撃等を十分に吸収できずに仮止されていた化粧片が脱落する等の問題が生じる。また、合成樹脂発泡体を合板等に固定する方法では、型枠の組立、脱型作業の効率が悪く、また、脱型時に合成樹脂発泡体が破損し易く再利用が困難である等の問題があった。
【０００４】
本発明は、このような従来の問題に鑑み、化粧片を好適に仮止保持すると共にコンクリート表面を好適に成形することができ、型枠の組立、脱型が容易で好適に再利用することができるコンクリート化粧壁面形成用型枠部材の組立方法の提供を目的としたものである。
【０００５】
【課題を解決するための手段】
上述の如き従来の問題を解決し、所期の目的を達成するための本発明に係るコンクリート化粧壁面形成用型枠部材の組立方法の特徴は、該部材がブロック状に成形されたポリオレフィン系樹脂発泡体より構成され、内面にタイル等の化粧片をその裏面側を露出させて仮止め保持する多数の化粧片嵌合用凹部を有するコンクリート化粧壁面形成用型枠部材を複数上下左右に並べ、該型枠部材の外面に縦向支持材を当接させて仮止めすることにより型枠を組み立てるコンクリート化粧壁面形成用型枠部材の組立方法であって、前記コンクリート化粧壁面形成用型枠部材は、１０％歪時の圧縮応力が０．５〜８．０ｋｇｆ／ｃｍ² のポリオレフィン系樹脂発泡体より構成され、外面周縁に連結用凸部を一体に有し、かつ、外面に仮止用凸部を一体に有するものを使用し、互いに隣り合う型枠部材間において互いに接合される前記連結用凸部にまたがって該両凸部に固定される連結具により各型枠部材を連結し、前記型枠部材の外面に縦向支持材を当接させて仮止めを行うに際し、両側に腕部分を有するコ字形の抱持部と、抱持部の両側の前記腕部分の先端側を腕部分に対して略垂直に一方へ折り曲げて一体に形成され、先端が先鋭に成型された鉤状部とからなる仮止具を使用し、該仮止具の前記抱持部で前記縦向支持材を挟み込み、前記鉤状部の先端を仮止用凸部の横向部分に突き刺すことにより前記型枠部材と縦向支持材を仮止めすることにある。
【０００６】
なお、連結具は、弾性材からなり、互いに接合される連結用凸部にまたがって該両凸部を挾み込むものであることが好ましい。
【０００７】
また、型枠部材は、周縁上下左右の端面に隣り合う型枠部材の接合面間において互いに嵌まり合う係合用凹凸を一体に備えた物であることが好ましい。また、ポリオレフィン系樹脂発泡体が、１０％歪時の圧縮応力が１．０〜６．０ｋｇｆ／ｃｍ² のポリプロピレン系樹脂発泡体であることが好ましい。
【０００８】
【発明の実施の形態】
次に本発明の実施の形態を図面について説明する。図において、１０は外型枠を構成する型枠部材であり、化粧片の一例として多数のタイル５、５…が仮止されるようになっ
ている。
【０００９】
型枠部材１０は、ポリオレフィン系樹脂発泡体をもって、横長偏平な略直方体形のブロック状（肉厚板状）に一体成型されており、成型後のポリオレフィン系樹脂発泡体は、１０％歪時の圧縮応力が０．５〜８．０ｋｇｆ／ｃｍ² となっている。このポリオレフィン系樹脂発泡体としては、特にポリプロピレン系樹脂発泡体が好ましく、１０％歪時の圧縮応力が、１．０〜６．０ｋｇｆ／ｃｍ² となることが好ましい。
【００１０】
成型後のポリオレフィン系樹脂発泡体の１０％歪時の圧縮応力が０．５ｋｇｆ／ｃｍ² 未満であると、コンクリートの打設により型枠部材１０が圧縮変形を起こし易く、コンクリート壁面が膨らんで形成されたり、タイル５、５…間の目地仕上用凹部が十分な深さ
に形成されない等の不都合が生じる。一方、１０％歪時の圧縮応力が８．０ｋｇｆ／ｃｍ² を越えると、型枠部材１０が固くなり過ぎ、タイル嵌合用凹部１１、１１…（後述）
へのタイル５、５…の嵌合（仮止）作業に支障を来たしたり、端太７１、７１…の衝突等に対して衝撃が十分に吸収されずに仮止されていたタイル５が脱落する等の不都合が生じる可能性がある。更に、この範囲をはずれると、型枠の脱型時に型枠部材１０が破損し易くなるので、再利用が困難となる。
【００１１】
なお、上述の１０％歪時の圧縮応力を求めるには、ＪＩＳＺ０２３４の静的圧縮試験方法（Ａ法）に準拠して、荷重速度を１０ｍｍ／分として試験片に荷重を加えて圧縮応力を測定し、測定結果から応力−歪線図を作成して、その図から読み取る。この際、試験片としては、縦横が共に３０±１ｍｍ、厚みが１５±１ｍｍのものを、型枠部材１０のタイル嵌合用凹部１１の平坦部分から切り出したものを使用する。
【００１２】
型枠部材１０には、図１、図３に示すように、コンクリート打設側である内面側に、多数のタイル嵌合用凹部１１、１１…（化粧片嵌合用凹部）が、縦横に碁盤状に整列して設けられている。このタイル嵌合用凹部１１は、タイル５と略同一の縦長略長方形で、タイル５の厚みと略同一の深さに形成され、また、内周面縁部が内周側に稍突出したテーパー状に形成されている。従って、タイル５は、図５に示すように、型枠部材１０の内面から突出せずにタイル嵌合用凹部１１に全体が収容されるように、裏面を露出して嵌め込まれ、タイル嵌合用凹部１１の内周面縁部により弾性的に押圧されて確実に保持される。
【００１３】
そして、図１〜図３に示すように、型枠部材１０の外周端面（上下端面、両側端面）の外面側（コンクリート打設側と反対側）部分には、係合用凹凸を構成する多数の係合用凹部１３、１３…と係合用凸部１４、１４…とが、複数の型枠部材１０、１０…を上下左右に並べる際に相互に嵌合してズレを防止するように、対応する配置で設けられている。
【００１４】
また、係合用凹部１３、１３…、係合用凸部１４、１４…は、タイル嵌合用凹部１１、１１…と同一のピッチで配置されており、従って、種々のサイズの型枠部材１０、１０…を好適に組み合わせることができる。また、係合用凹部１３は外面側に開口して形成されており、脱型時には、係合用凸部１４を外側（コンクリート打設側と反対側）へ引き出すようにして係合用凹部１３と係合用凸部１４とを離反させることができる。
【００１５】
そして、図２、図３に示すように、型枠部材１０の外面側（コンクリート打設側と反対側）には、コンクリート型枠としての剛性を確保すると共に軽量化を図るため、縦横の格子状の補強用凸部１６が設けられている。そして、補強用凸部１６の枠状の周縁部分は、連結具２０、２０…（後述）を介して隣り合う型枠部材１０と連結するための連結用凸部を兼ねており、また。補強用凸部１６は、仮止具２５、２５…（後述）を介して縦端太７１と仮止するための仮止用凸部を兼ねている。また、補強用凸部１６に囲まれた凹部は、連結具２０、仮止具２５の先端部分が挿入される装着用凹部を構成している。
【００１６】
また、この補強用凸部１６は、内面側のタイル嵌合用凹部１１、１１…間の縦横の格子状の凸部（目地成形部）に対応して配置されており、図２、図４に示すように、補強用凸部１６には、多数の貫通孔形成用凹部１８、１８…が設けられ、セパレーター装着用の貫通孔１９（後述）を、タイル嵌合用凹部１１、１１…に仮止されたタイル５、５…間に、好適に開けることができるようになっている。
【００１７】
このような型枠部材１０、１０…をもって外型枠を組み立てるには、まず、図６に示すように、複数の型枠部材１０、１０…を、係合用凹部１３、１３…と係合用凸部１４、１４…とを嵌合させるように外周端面を突き合わせて、上下左右に並べる。なお、ポリオレフィン系樹脂発泡体からなる型枠部材１０は、壁面の大きさに応じて容易に切断することができる。
【００１８】
そして、図８、図９に示すように、連結具２０、２０…を、隣り合う型枠部材１０、１０の補強用凸部１６、１６の周縁部分（連結用凸部）を挾み込むように両型枠部材１０、１０に跨がって、所定の配置で装着し、複数の連結具２０、２０…を介して上下左右に隣り合う型枠部材１０、１０…を相互に連結して、型枠部材１０、１０間の開きを防止し、タイル５、５…間の目地幅が一定になるようにする。なお、型枠部材１０、１０…の相互の連結は、粘着テープ等（連結具）を両者の連結用凸部（補強用凸部１６の周縁部分）に跨がるように貼り付けたり、針金等（連結具）を両者の連結用凸部に貫通させて縛り付けるようにして行うこともできる。
【００１９】
連結具２０は、鋼板等の弾性材をもって形成されており、図７に示すように、両側に突出片部分（腕部分）を有するコ字形断面で突出片部分の先端側を弾性的に開閉可能な板バネ部２２と、板バネ部２２の両側の突出片部分の先端側を内向（対向する方向）に折り曲げて一体的に形成した係合部２３、２３とからなっている。
【００２０】
そして、連結具２０は、図９に示すように、板バネ部２２で２つの型枠部材１０、１０の連結用凸部（補強用凸部１６の周縁部分）を挾み込む形で、板バネ部２２の突出片部分を装着用凹部（連結用凸部に隣り合う凹部）に挿入され、先端の係合部２３、２３を介して板バネ部２２の弾性力により連結用凸部の根元部分（型枠部材１０の厚み方向の略中央部分）を押圧するようにして、２つの型枠部材１０、１０に跨がって固定される。従って、２つの型枠部材１０、１０を容易に連結することができ、両者の外周端面を好適に密着させることができる。
【００２１】
次に、型枠部材１０、１０…の外面側（コンクリート打設側と反対側）に、図１１、図１２に示すように、縦向支持材を構成する角形鋼管等からなる縦向長尺状の複数の縦端太７１、７１…を、左右に所定の間隔で、型枠部材１０、１０…の外面に当接させて設置し、仮止具２５を縦端太７１に掛け回して型枠部材１０の補強用凸部１６（仮止用凸部）の横向部分に突き刺すようにして装着し、仮止具２５を介して型枠部材１０と縦端太７１とを仮止する。
【００２２】
仮止具２５は、鋼線等の剛性材をもって形成されており、図１０に示すように、両側に腕部分（突出片部分）を有するコ字形の抱持部２７と、抱持部２７の両側の腕部分の先端側を抱持部２７に対して略垂直に一方へ折り曲げて一体的に形成した鉤状部２８、２８とからなっており、鉤状部２８、２８の先端は尖鋭に形成されている。
【００２３】
そして、仮止具２５は、図１１に示すように、抱持部２７で縦端太７１を挾み込み、抱持部２７の腕部分を型枠部材１０の装着用凹部（仮止用凸部の上側に隣り合う凹部）に挿入され、図１７に示すように、先端の鉤状部２８、２８を仮止用凸部（補強用凸部１６）の横向部分に突き刺すようにして、型枠部材１０に固定される。従って、型枠部材１０と縦端太７１とを容易に仮止することができる。
【００２４】
また、内型枠と外型枠との間にセパレーター６０を装着する際には、図１３に示すように、型枠部材１０の複数の貫通孔形成用凹部１８、１８…の内、内型枠側に固定されたセパレーター６０と対応する位置の貫通孔形成用凹部１８に、熱ゴテ等により貫通孔１９を開ける。そして、図１４に示すように、型枠部材１０の内面をセパレーター６０の取付具６２に当接させ、貫通孔１９に接続棒６５を挿通して取付具６２に接続し、型枠部材１０の外面側に、フォームタイ６６を接続棒６５に接続するようにして装着する。
【００２５】
この接続棒６５、フォームタイ６６は、型枠部材１０を圧縮変形させないように、接続用ネジ部、非ネジ部等の長さが型枠部材１０の厚みに対応して成形されており、従って、型枠部材１０の変形によるタイル５、５…の仮止保持角度のズレ等を防止することができる。なお、セパレーター６０、６０…は、断熱パネル１等からなる内型枠を先に組み立てて、取付具６１（コーン）、フォームタイ６３を介して、所定の配置で装着しておき、また、セパレーター６０の外型枠側の端部には、比較的面積の大きな取付具６２を装着しておく。
【００２６】
そして、図１５に示すように、縦端太７１、７１…の外側（コンクリート打設側と反対側）に、丸形鋼管等からなる横向長尺状の複数の横端太７３、７３…を、型枠部材１０の外側に固定されたファームタイ６６に取付金具６８、ナット６９を介して装着するようにして、上下に所定の間隔で設置し、ワイヤー等の緊張材を介して、横端太７３、７３…を内側（コンクリート打設側）へ押圧して、型枠を締付ける。
【００２７】
このようにブロック状の型枠部材１０、１０…を上下左右に並べ、相互に連結することにより、合板等に固定しなくても、仮止された多数のタイル５、５…を好適に整列させ、コンクリート型枠としての剛性を確保することができ、合板等に固定する場合に比して作業が容易になる。
【００２８】
そして、型枠部材１０、１０…からなる外型枠と断熱パネル１とからなる内型枠との間のコンクリート打設空間にコンクリートを打設して硬化させると、型枠部材１０、１０…に仮止されていたタイル５、５…がコンクリート壁体の外表面に固着される。そして、横端太７３、７３…、縦端太７１、７１…を撤去し、型枠部材１０、１０…を相互に連結している連結具２０、２０…を取り外して、図１６に示すように、型枠部材１０、１０…からなる外型枠を脱型する。
【００２９】
なお、連結具２０は、係合部２３、２３で型枠部材１０、１０の連結用凸部を弾性的に挾み込んでいるだけであり、仮止具２５は、鉤状部２８、２８を型枠部材１０の仮止用凸部に突き刺しているだけであるので、いずれも容易に取り外すことができ、また、再利用することができる。
【００３０】
脱型の際、型枠部材１０は、ポリオレフィン系樹脂発泡体からなるので、コンクリート壁体１００の表面から剥離し易く、また、複数の型枠部材１０、１０…は、係合用凹部１３、１３…、係合用凸部１４、１４…を介して端面が係合しているだけであるので、隣り合う型枠部材１０、１０…を容易に分離することができ、型枠部材１０、１０…を、個別に、比較的（外型枠全体に対して）小面積ずつ丁寧に剥がして行くことができる。従って、型枠部材１０の破損、特にタイル嵌合用凹部１１、１１…間の凸部（目地成形部）の破損等を好適に防止することができ、型枠部材１０を好適に再利用することができる。
【００３１】
【発明の効果】
上述のように、本発明方法においては、１０％歪時の圧縮応力が０．５〜８．０ｋｇｆ／ｃｍ²のポリオレフィン系樹脂発泡体、特に１０％歪時の圧縮応力が１．０〜６．０ｋｇｆ／ｃｍ²のポリプロピレン系樹脂発泡体により構成した型枠部材を使用することによって、コンクリート表面を好適に成形することができると共に、化粧片を好適に仮止め保持することができる。
【００３２】
また、型枠部材をブロック状に成形し、型枠部材の外面周縁に連結用凸部を一体的に設けることによって、複数の型枠部材を上下左右に並べ、型枠部材を相互に連結用凸部を介して連結するようにして、合板等に固定することなく、軽量な型枠を構成することができる。そして、このように型枠を組み立てることによって、型枠の組立、脱型が容易になり、また、型枠部材の破損を防止して、型枠部材を好適に再利用することができる。
【００３３】
また、型枠部材の外面に、仮止用凸部を一体的に設けることによって、型枠部材と縦端太等とを好適に仮止することができる。また、型枠部材の外面に、格子状の補強用凸部を一体的に設けることによって、少数の縦端太等で型枠を支持することができ、また、補強用凸部を、連結用凸部、仮止用凸部として併用することができる。
【００３４】
また、弾性材からなる連結具を用い、連結具により連結用凸部を挾み込むようにして、型枠部材を相互に連結することによって、型枠部材の連結、分離を容易に行うことができ、また、連結具は再利用することができる。
【００３５】
また、抱持部と鉤状部とからなる仮止具を用い、抱持部により縦端太等を抱持し、鉤状部を仮止用凸部に突き刺すようにして、型枠部材と縦端太等とを仮止することによって、型枠部材と縦端太等との仮止、取外しを容易に行うことができ、また、仮止具は再利用することができる。
【図面の簡単な説明】
【図１】外型枠を構成する型枠部材の正面図である。
【図２】型枠部材の背面図である。
【図３】図１中のＡ−Ａ線による縦断面図である。
【図４】図２中のＢ−Ｂ線による縦断面図である。
【図５】型枠部材へのタイル（化粧片）の仮止状態を示す縦断面図である。
【図６】型枠部材からなる外型枠の組立状態を示す背面図である。
【図７】連結具の斜視図である。
【図８】連結具による型枠部材の相互の連結状態を示す背面図である。
【図９】図８中のＣ−Ｃ線による縦断面図である。
【図１０】仮止具の斜視図である。
【図１１】仮止具による型枠部材と縦端太（縦向支持材）との仮止状態を示す横断面図
である。
【図１２】図１１中のＤ−Ｄ線による縦断面図である。
【図１３】型枠部材のセパレーター用貫通孔を示す縦断面図である。
【図１４】型枠部材へのセパレーターの取付状態を示す縦断面図である。
【図１５】外型枠への横端太の取付状態を示す縦断面図である。
【図１６】型枠部材からなる外型枠の脱型状態を示す縦断面図である。
【符号の説明】
１断熱パネル（内型枠）
５タイル（化粧片）
１０型枠部材（外型枠）
１１タイル嵌合用凹部（化粧片嵌合用凹部）
１３係合用凹部（係合用凹凸）
１４係合用凸部（係合用凹凸）
１６補強用凸部（連結用凸部、仮止用凸部）
１８貫通孔形成用凹部
１９貫通孔
２０連結具
２２板バネ部
２３係合部
２５仮止具
２７抱持部
２８鉤状部
６０セパレーター
６１取付具
６２取付具
６３フォームタイ
６５接続棒
６６フォームタイ
６８取付金具
６９ナット
７１縦端太（縦向支持材）
７３横端太
１００コンクリート壁体[0001]
BACKGROUND OF THE INVENTION
The present invention provides a concrete decorative wall surface to which a large number of decorative pieces such as tiles are fixed in a manner in which the decorative piece is temporarily held on the inner surface of the mold and the concrete is placed inside the mold. The present invention also relates to a method for assembling a concrete decorative wall surface forming frame member for temporarily holding a decorative piece.
[0002]
[Prior art]
As a method for constructing a concrete decorative wall surface to which a large number of decorative pieces such as tiles are fixed, for example, in the method disclosed in Japanese Patent Publication No. Sho 62-24589, a large number of concave portions for fitting decorative pieces are formed in a synthetic resin foam. Then, this synthetic resin foam is fixed to a plywood or the like to form a mold, and a large number of decorative pieces are temporarily fixed and held on the inner surface of the mold by being fitted into the decorative piece fitting recesses. A large number of decorative pieces are fixed to the concrete surface by placing concrete on the surface.
[0003]
[Problems to be solved by the invention]
In the construction method described above, a large number of decorative pieces can be efficiently fixed to the concrete surface. However, if the synthetic resin foam is too soft, the synthetic resin foam is deformed when the concrete is placed and the concrete surface swells. If the synthetic resin foam is too hard, the decorative piece is temporarily attached to the concave portion for fitting the decorative piece. Problems such as hindering the stopping work or dropping off the temporarily stopped decorative piece without being able to sufficiently absorb the impact at the time of installation occur. In addition, the method of fixing the synthetic resin foam to the plywood etc. is not efficient in assembling and demolding the mold, and the synthetic resin foam is easily damaged at the time of demolding and is difficult to reuse. was there.
[0004]
In view of such a conventional problem, the present invention is capable of suitably temporarily holding a decorative piece and suitably molding a concrete surface, and can be easily assembled and removed from a mold, and can be suitably reused. An object of the present invention is to provide a method for assembling a formwork member for forming a concrete decorative wall surface .
[0005]
[Means for Solving the Problems]
The feature of the method for assembling the formwork member for forming a concrete decorative wall surface according to the present invention for solving the conventional problems as described above and achieving the intended purpose is a polyolefin resin in which the member is molded into a block shape A plurality of formwork members for forming a concrete decorative wall surface having a plurality of recesses for fitting decorative pieces, which are made of foam, and have a decorative piece such as a tile on the inner surface and temporarily hold the exposed back side of the decorative piece, A method of assembling a formwork member for forming a concrete decorative wall surface by assembling the formwork by bringing a longitudinal support material into contact with the outer surface of the formwork member and temporarily fixing the formwork member, Consists of a polyolefin resin foam having a compressive stress of 0.5 to 8.0 kgf / cm ² at 10% strain, integrally having a connecting projection on the outer peripheral edge, and a temporary fixing projection on the outer surface Together And connecting each mold member with a connector fixed to the two projecting portions across the connecting convex portions joined to each other between the adjacent mold member, When temporary fixing is performed by bringing a vertical support material into contact with the outer surface, a U-shaped holding portion having arm portions on both sides, and the distal end side of the arm portion on both sides of the holding portion are substantially Using a temporary fastener formed of a hook-shaped portion that is integrally formed by bending vertically to one side and having a sharp tip, and sandwiching the longitudinal support material at the holding portion of the temporary fastener, It is to temporarily fix the mold member and the vertical support member by piercing the end of the hook-like portion into the lateral portion of the temporary fixing convex portion.
[0006]
In addition, it is preferable that a connection tool consists of an elastic material and squeezes both these convex parts over the connection convex part joined mutually.
[0007]
Moreover, it is preferable that a formwork member is a thing integrally provided with the unevenness | corrugation for engagement mutually fitted between the joining surfaces of the formwork member adjacent to the edge surface of the periphery upper and lower sides, and right and left. The polyolefin resin foam is preferably a polypropylene resin foam having a compressive stress of 1.0 to 6.0 kgf / cm ² at 10% strain.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 10 denotes a mold member constituting an outer mold, and a large number of tiles 5, 5... Are temporarily fixed as an example of a decorative piece.
[0009]
The mold member 10 has a polyolefin resin foam and is integrally molded into a horizontally flat block-shaped block (thick plate). The molded polyolefin resin foam has a 10% strain. The compressive stress is 0.5 to 8.0 kgf / cm ² . The polyolefin resin foam is particularly preferably a polypropylene resin foam, and the compressive stress at 10% strain is preferably 1.0 to 6.0 kgf / cm ² .
[0010]
When the compressive stress at the time of 10% strain of the polyolefin resin foam after molding is less than 0.5 kgf / cm ² , the formwork member 10 is likely to be compressed and deformed by concrete placement, and the concrete wall surface swells and forms. Or the joint finishing recesses between the tiles 5, 5... Are not formed to a sufficient depth. On the other hand, if the compressive stress at the time of 10% strain exceeds 8.0 kgf / cm ² , the mold member 10 becomes too hard, and the tile fitting recesses 11, 11.
The tiles 5 that have been temporarily fixed without being sufficiently absorbed by the collision of the end plates 71, 71, etc. are hindered in the work of fitting (temporarily fixing) the tiles 5, 5,. There is a possibility that inconvenience occurs. Furthermore, if it deviates from this range, the mold member 10 is likely to be damaged when the mold is removed, making it difficult to reuse.
[0011]
In addition, in order to obtain the compressive stress at the time of 10% strain, the compressive stress is applied by applying a load to the test piece at a load speed of 10 mm / min according to the static compression test method (Method A) of JIS Z 0234. Is measured, a stress-strain diagram is created from the measurement results, and read from the diagram. At this time, as the test pieces, those having a length and width of 30 ± 1 mm and a thickness of 15 ± 1 mm cut out from the flat portion of the tile fitting recess 11 of the mold member 10 are used.
[0012]
As shown in FIGS. 1 and 3, the mold member 10 has a large number of tile fitting recesses 11, 11... (Decoration fitting fitting recesses) on the inner surface side which is the concrete placing side, in a vertical and horizontal manner. Are arranged in line. The tile fitting recess 11 is a substantially rectangular shape that is substantially the same as the tile 5, is formed to have a depth substantially the same as the thickness of the tile 5, and has a tapered shape with an inner peripheral surface edge protruding toward the inner peripheral side. Is formed. Therefore, as shown in FIG. 5, the tile 5 is fitted with the back surface exposed so that the whole is accommodated in the tile fitting recess 11 without protruding from the inner surface of the mold member 10. 11 is elastically pressed by the inner peripheral edge and is securely held.
[0013]
And as shown in FIGS. 1-3, many uneven | corrugation for engagement is comprised in the outer surface side (on the opposite side to a concrete placement side) part of the outer peripheral end surface (upper and lower end surfaces, both end surfaces) of the mold member 10. The engaging recesses 13, 13... And the engaging protrusions 14, 14... Correspond to each other when the plurality of formwork members 10, 10. It is provided by arrangement.
[0014]
The engaging recesses 13, 13,... And the engaging protrusions 14, 14,... Are arranged at the same pitch as the tile fitting recesses 11, 11,. Can be suitably combined. Further, the engaging recess 13 is formed to open to the outer surface side, and at the time of demolding, the engaging recess 13 and the engaging recess 13 are engaged with each other by pulling the engaging protrusion 14 outward (opposite to the concrete placing side). The convex part 14 can be separated.
[0015]
As shown in FIGS. 2 and 3, on the outer surface side of the mold member 10 (on the side opposite to the concrete placing side), in order to ensure rigidity as a concrete mold and reduce the weight, a vertical and horizontal grid A reinforcing reinforcing portion 16 is provided. And the frame-shaped peripheral part of the convex part 16 for a reinforcement serves as the convex part for a connection for connecting with the adjacent formwork member 10 via connector 20,20 ... (after-mentioned). The reinforcing convex portion 16 also serves as a temporary fixing convex portion for temporarily fixing with the vertical thick end 71 via temporary fasteners 25, 25 (described later). Further, the recess surrounded by the reinforcing convex portion 16 constitutes a mounting concave portion into which the distal end portions of the connector 20 and the temporary fastener 25 are inserted.
[0016]
Further, the reinforcing convex portions 16 are arranged corresponding to the vertical and horizontal lattice-shaped convex portions (joint forming portions) between the inner side tile fitting concave portions 11, 11... As shown in the figure, the reinforcing convex part 16 is provided with a large number of through hole forming concave parts 18, 18..., And a separator mounting through hole 19 (described later) is temporarily fixed to the tile fitting concave parts 11, 11. The tiles 5, 5... Can be suitably opened.
[0017]
In order to assemble the outer mold with such mold members 10, 10,..., First, as shown in FIG. 6, a plurality of mold members 10, 10,. The outer peripheral end faces are abutted so as to fit the parts 14, 14... The formwork member 10 made of a polyolefin resin foam can be easily cut according to the size of the wall surface.
[0018]
Then, as shown in FIGS. 8 and 9, the couplers 20, 20... Are swallowed by the peripheral portions (connecting convex portions) of the reinforcing convex portions 16 and 16 of the adjacent mold members 10 and 10. Are mounted in a predetermined arrangement across the two mold members 10, 10, and the adjacent mold members 10, 10,... Are connected to each other via a plurality of connectors 20, 20,. The mold members 10 and 10 are prevented from opening, and the joint width between the tiles 5, 5,... Is made constant. The formwork members 10, 10... Are connected to each other by sticking an adhesive tape or the like (connector) so as to straddle the connecting convex portions (peripheral portions of the reinforcing convex portions 16), or a wire. Etc. (connecting tool) can be carried out by penetrating the two connecting convex portions and binding them.
[0019]
The connector 20 is formed of an elastic material such as a steel plate, and as shown in FIG. 7, the front end side of the protruding piece portion can be opened and closed elastically with a U-shaped cross section having protruding piece portions (arm portions) on both sides. The plate spring portion 22 and engagement portions 23 and 23 integrally formed by bending the leading end sides of the protruding piece portions on both sides of the plate spring portion 22 inward (opposite directions).
[0020]
Then, as shown in FIG. 9, the connector 20 has a plate spring portion 22 that sandwiches the connecting convex portions (peripheral portions of the reinforcing convex portions 16) of the two mold members 10, 10, The protruding piece portion of the spring portion 22 is inserted into a mounting concave portion (a concave portion adjacent to the connecting convex portion), and the base of the connecting convex portion is caused by the elastic force of the leaf spring portion 22 through the engaging portions 23 and 23 at the tip. The part (substantially central part in the thickness direction of the formwork member 10) is pressed and fixed across the two formwork members 10 and 10. Accordingly, the two mold members 10 and 10 can be easily connected, and the outer peripheral end surfaces of both can be suitably adhered.
[0021]
Next, as shown in FIG. 11 and FIG. 12, on the outer surface side (the side opposite to the concrete placing side) of the mold members 10, 10,. Are arranged in contact with the outer surface of the formwork members 10, 10 at a predetermined interval on the left and right sides, and the temporary fastener 25 is hung around the vertical end thick 71. The mold member 10 is attached so as to be pierced in the lateral portion of the reinforcing convex portion 16 (temporary fixing convex portion) of the mold member 10, and the mold member 10 and the vertical end thick 71 are temporarily fixed via the temporary fastener 25.
[0022]
The temporary fastener 25 is formed of a rigid material such as a steel wire. As shown in FIG. 10, the U-shaped holding portion 27 having arm portions (projecting piece portions) on both sides, and the holding portion 27. It consists of hook-shaped parts 28 and 28 integrally formed by bending the tip side of the arm part on both sides to one side substantially perpendicular to the holding part 27, and the tips of the hook-shaped parts 28 and 28 are sharp. Is formed.
[0023]
Then, as shown in FIG. 11, the temporary fastener 25 squeezes the vertical end 71 with the holding portion 27, and the arm portion of the holding portion 27 is attached to the mounting recess (temporary fixing protrusion) of the mold member 10. As shown in FIG. 17, the hook-shaped portions 28, 28 at the tip end are inserted into the lateral portion of the temporary fixing convex portion (reinforcing convex portion 16), as shown in FIG. It is fixed to the frame member 10. Therefore, the mold member 10 and the vertical end thick 71 can be easily temporarily fixed.
[0024]
Further, when the separator 60 is mounted between the inner mold frame and the outer mold frame, as shown in FIG. 13, the inner mold of the plurality of through-hole forming recesses 18, 18. A through-hole 19 is opened with a heat trowel or the like in the through-hole forming recess 18 at a position corresponding to the separator 60 fixed to the frame side. Then, as shown in FIG. 14, the inner surface of the mold member 10 is brought into contact with the fixture 62 of the separator 60, and the connecting rod 65 is inserted into the through hole 19 and connected to the fixture 62. The foam tie 66 is mounted on the outer surface side so as to be connected to the connecting rod 65.
[0025]
The connecting rod 65 and the foam tie 66 are formed such that the lengths of the connecting screw portion and the non-threaded portion correspond to the thickness of the mold member 10 so as not to compress and deform the mold member 10. The displacement of the temporary holding angle of the tiles 5, 5... Due to the deformation of the mold member 10 can be prevented. The separators 60, 60... Are assembled by first assembling an inner mold frame composed of the heat insulating panel 1 and the like, and mounted in a predetermined arrangement via a fixture 61 (cone) and a foam tie 63. A fitting 62 having a relatively large area is attached to the end of the outer mold 60 on the side of 60.
[0026]
And as shown in FIG. 15, several horizontal end thick 73, 73 ... of the horizontal direction long shape which consists of a round steel pipe etc. is formed on the outer side (opposite to the concrete placement side) of the vertical end thick 71, 71 .... The upper end of the mold tie 66 fixed to the outer side of the formwork member 10 is attached via a mounting bracket 68 and a nut 69, and installed at predetermined intervals in the vertical direction. The thick 73, 73,... Are pressed inward (concrete casting side) to tighten the formwork.
[0027]
In this way, by arranging the block-shaped formwork members 10, 10 ... vertically and horizontally and connecting them to each other, it is possible to suitably arrange a large number of temporarily fixed tiles 5, 5 ... without fixing them to a plywood or the like. Therefore, the rigidity as a concrete formwork can be ensured, and the operation becomes easier as compared with the case of fixing to a plywood or the like.
[0028]
Then, when concrete is placed in a concrete placement space between the outer mold frame made of the mold members 10, 10... And the inner mold frame made of the heat insulating panel 1 and cured, the mold members 10, 10. The tiles 5, 5... That have been temporarily fixed to the outer wall are fixed to the outer surface of the concrete wall. Then, the horizontal end thick 73, 73... And the vertical end thick 71, 71... Are removed, and the connecting members 20, 20. Then, the outer mold made of the mold members 10, 10... Is removed.
[0029]
Note that the connecting tool 20 merely elastically pinches the connecting projections of the mold members 10 and 10 with the engaging portions 23 and 23, and the temporary fastener 25 includes the hook-shaped parts 28 and 28. Is merely stabbed into the temporary fixing convex portion of the mold member 10, and both can be easily removed and can be reused.
[0030]
At the time of demolding, the mold member 10 is made of a polyolefin-based resin foam, so that it can be easily peeled off from the surface of the concrete wall 100, and the plurality of mold members 10, 10,. ..., since the end faces are only engaged through the engaging projections 14, 14, ..., the adjacent mold members 10, 10, ... can be easily separated, and the form members 10, 10, ... Can be peeled off individually and relatively (relative to the entire outer formwork) in small areas. Therefore, damage to the mold member 10, particularly damage to the convex portion (joint forming portion) between the tile fitting recesses 11, 11... Can be suitably prevented, and the mold member 10 can be suitably reused. Can do.
[0031]
【The invention's effect】
As described above, in the method of the present invention, a polyolefin resin foam having a compressive stress at 10% strain of 0.5 to 8.0 kgf / cm ² , particularly a compressive stress at 10% strain of 1.0 to 6 is used. by using more configured formwork member to a polypropylene resin foam .0kgf / cm ^2, it is possible to suitably shape the concrete surface, it is possible to suitably temporarily fixed holding makeup piece.
[0032]
In addition, the mold member is formed into a block shape, and a plurality of mold members are lined up and down and left and right to integrally connect the mold members to the outer periphery of the mold member. A light-weight formwork can be configured without being fixed to a plywood or the like by being connected via a convex portion. By assembling the formwork in this way, the formwork can be easily assembled and removed, and the formwork member can be prevented from being damaged, and the formwork member can be suitably reused.
[0033]
Moreover, by providing the temporary fixing convex part integrally on the outer surface of the mold member, the mold member and the vertical end thicker can be suitably temporarily fixed. In addition, by integrally providing a grid-like reinforcing convex portion on the outer surface of the mold member, the mold frame can be supported by a small number of vertical ends, etc., and the reinforcing convex portion can be connected. It can use together as a convex part and the convex part for temporary fixing.
[0034]
In addition, by using a coupling tool made of an elastic material, and by swallowing the coupling convex portion with the coupling tool, by connecting the mold frame members to each other, it is possible to easily connect and separate the mold frame members, Also, the connector can be reused.
[0035]
Also, using a temporary fastener composed of a holding part and a hook-like part, holding the vertical end thickness etc. by the holding part, and piercing the hook-like part into the temporary fixing convex part, By temporarily fixing the vertical end thickness and the like, the mold member and the vertical end thickness and the like can be easily fixed and removed, and the temporary fixing tool can be reused.
[Brief description of the drawings]
FIG. 1 is a front view of a formwork member constituting an outer formwork.
FIG. 2 is a rear view of a formwork member.
FIG. 3 is a longitudinal sectional view taken along line AA in FIG.
4 is a longitudinal sectional view taken along line BB in FIG. 2. FIG.
FIG. 5 is a longitudinal sectional view showing a temporarily fixed state of a tile (decorative piece) to a formwork member.
FIG. 6 is a rear view showing an assembled state of an outer mold made of a mold member.
FIG. 7 is a perspective view of a connector.
FIG. 8 is a rear view showing a state in which formwork members are connected to each other by a connecting tool.
FIG. 9 is a longitudinal sectional view taken along line CC in FIG.
FIG. 10 is a perspective view of a temporary fastener.
FIG. 11 is a cross-sectional view showing a temporarily fixed state of a formwork member and a thick vertical end (longitudinal support material) by a temporary fastener.
12 is a longitudinal sectional view taken along line DD in FIG.
FIG. 13 is a longitudinal sectional view showing a through hole for a separator of a mold member.
FIG. 14 is a longitudinal sectional view showing a state where the separator is attached to the mold member.
FIG. 15 is a longitudinal sectional view showing a state in which the thick lateral end is attached to the outer mold.
FIG. 16 is a longitudinal sectional view showing a state in which an outer mold made of a mold member is removed.
[Explanation of symbols]
1 Insulation panel (inner formwork)
5 tiles (decorative pieces)
10 Formwork member (outer formwork)
11 Tile fitting recess (decoration fitting fitting recess)
13 Recess for engagement (engagement unevenness)
14 Convex protrusion (engagement irregularity)
16 Reinforcing convex part (connecting convex part, temporary convex part)
18 Through-hole forming recess 19 Through-hole 20 Connecting tool 22 Leaf spring part 23 Engaging part 25 Temporary fastener 27 Holding part 28 Hook-like part 60 Separator 61 Mounting tool 62 Mounting tool 63 Form tie 65 Connecting rod 66 Form tie 68 Mounting bracket 69 Nut 71 Thick vertical end (vertical support material)
73 Thick End 100 Concrete Wall

Claims

A formwork for forming a concrete decorative wall surface, which is composed of a polyolefin-based resin foam molded into a block shape, and has a large number of decorative piece fitting recesses on the inner surface for temporarily holding a decorative piece such as a tile with its back side exposed. A method for assembling a formwork member for forming a concrete decorative wall surface, in which a plurality of members are arranged vertically and horizontally, and a formwork is assembled by temporarily fixing a longitudinal support material in contact with the outer surface of the formwork member,
The formwork member for forming a concrete decorative wall surface is made of a polyolefin resin foam having a compressive stress of 0.5 to 8.0 kgf / cm ² at 10% strain, and has a connecting convex portion on the outer peripheral edge. And a fixture that is fixed to the two convex portions across the connecting convex portions that are joined to each other between the adjacent formwork members, using one having a temporary fixing convex portion on the outer surface. When connecting each formwork member by the above and making a temporary fixing by bringing a vertical support material into contact with the outer surface of the formwork member, a U-shaped holding part having arm portions on both sides, and both sides of the holding part Using a temporary fastener formed of a hook-shaped portion formed integrally with the distal end side of the arm portion bent to one side substantially perpendicular to the arm portion, and having a sharply shaped distal end. The vertical support material is sandwiched by the holding portion, and the tip of the hook-shaped portion is placed next to the temporary fixing convex portion. The mold member and method of assembling the concrete cosmetic wall forming mold member, wherein a longitudinal direction supporting member is temporarily fixed by sticking to the part.

2. The method for assembling a formwork member for forming a concrete decorative wall surface according to claim 1, wherein the connecting member is made of an elastic material and squeezes both convex portions across the connecting convex portions to be joined to each other.

The formwork member for forming a concrete decorative wall according to claim 1 or 2 , wherein the formwork member is integrally provided with concavities and convexities for engaging each other between joint surfaces of adjacent formwork members on the upper, lower, left and right end faces. Assembling method of members.

4. The formwork member for forming a concrete decorative wall surface according to claim 1, wherein the polyolefin resin foam is a polypropylene resin foam having a compressive stress of 1.0 to 6.0 kgf / cm ² at 10% strain. Assembly method.