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EPS聚苯板的施工方法

分類:常見問題 發布時間:2020-07-24 156次瀏覽

1 施工流程基層處理→測量放線→粘貼EPS聚苯板→聚苯板打磨→涂抹面膠漿→鋪壓耐...

1 施工流程

基層處理→測量放線→粘貼EPS聚苯板→聚苯板打磨→涂抹面膠漿→鋪壓耐堿玻纖網格布→涂抹面膠漿→涂耐水彈性膩子和→面層涂料或面磚施工。

2 墻體基面處理及測量放線

墻體基面須清理干凈,檢驗墻面平整度和垂直度,用2m靠尺檢查,較大偏差≯5mm。在墻面彈出水平控制線,建筑物外墻陽角掛垂直基準鋼線;每個樓層在適當位置掛水平線,以控制EPS聚苯板的垂直和平整度。

3 EPS板的固定方法

⑴ 粘貼法

粘貼法有點框法、條粘法和滿粘法,通常采用點框法。用鋼抹子沿EPS板的四周涂抹配制好的粘結劑,寬度為50mm,板的中間均勻設置8個直徑100mm的粘結點,厚10mm,粘結劑的涂抹面積不得小于 百分之四十。板應自下而上沿水平方向橫向鋪貼,錯縫1/2板長。粘貼法適用于外墻飾面采用涂料的外墻外保溫層施工。

⑵ EPS板粘貼與錨栓結合法

該法是在粘貼法的基礎上設置若干錨栓固定EPS 保溫板。錨栓為超韌尼龍或塑料精制而成,尾部設有螺絲自攻性脹塞結構。錨栓用量每平方米10層以下約6個,10~18層8個,19~24層10個,24層以上12個。單個錨栓抗拉承載力≥1. 5kN。適用于外墻飾面為磁磚的外墻保溫層施工,尤其適用于基面附著力差的既有建筑圍護結構的節能改造。

⑶ 鋼絲網架埋入法

該工藝是將單面鋼絲網架聚苯板內置于砼墻體的外模內側,墻體砼澆筑時與鋼絲網架聚苯板一次澆注成型為復合墻體。

鋼絲網架聚苯板在工廠預制成塊體,現場根據排板尺寸裁割拼裝,外墻主體與保溫層一次成活,工效提高,工期縮短。

鋼絲網架聚苯板依靠砼與聚苯板的粘接力以及斜插鋼絲、L型鋼筋等與砼墻體錨固。保溫板的固定效果較佳。缺點是造價稍高,且斜插鋼絲直接傳熱,會降低墻體的保溫效果。適用于外墻飾面采用磁磚的高層建筑。

【注意】這是一種新型外墻節能保溫復合體系。聚苯板采用積木式插接組合,內置于鋼模板內,集保溫隔熱和承重結構于一體。

4 EPS板的打磨

EPS板粘貼固定后需靜置24h才能進行打磨,以防EPS板移動。打磨用專用的搓抹子將板邊的不平之處磨平,去除板間接縫的高低差,打磨時散落的EPS碎屑隨時清理干凈。板縫間隙>1.6mm時應用EPS板條填實后磨平。

5 網格布的鋪設

通常采用二道抹面砂漿法。用不銹鋼抹子在EPS板表面均勻涂抹面積略大于一塊網格布的抹面砂漿,隨即將網格布壓入抹面砂漿中,待砂漿稍干至可碰觸時,立即用抹子涂抹另一道抹面砂漿,將網格布埋在兩道抹面砂漿的中間。全部抹面砂漿和網格布鋪設完畢后,靜置養護3d,方可進行下一道工序的施工。 

6 飾面層的選擇

EPS復合式外墻保溫層屬于輕質、柔性的保溫構造,飾面材料采用涂料屬“柔-柔”搭配,外保溫體系自重約10kg/m2;而磁磚面層外保溫自重可達50kg/m2以上,即便用附加錨栓或埋入法來確保磁磚與保溫層間的附著保障,但“柔性基底-剛性面層”的構造殘缺仍然明顯,磁磚背面的冷凝水易發生凍融破壞,溫濕應力導致磚縫處面層開裂較難避免。EPS復合式外墻保溫層的飾面層應優先選用高彈性涂料,飾面材料為石材應采用“干掛法”施工。

7 門窗洞口及陽角的處理 

門窗洞口角部的聚苯板,應采用整塊聚苯板切割出洞口,不得用碎(小)塊拼接。鋪設網格布時,應在洞口四角處沿450方向貼補一塊標準網格布(200×300mm),以防止角部開裂。

 


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黑巨茎大战乌克兰美女
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