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    預制PC建筑外墻防水聚氨酯密封膠存在的問題

    • 發布時間 : 2023-11-14 10:59:38
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    (Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

    預制PC建筑外墻防水聚氨酯密封膠存在的問題

    (Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

    • 發布時間 : 2023-11-14 10:59:38
    • Views:
    Information

           因水流的毛細作用會滲透外墻體接縫,而滲入室內,故本工程中二層現澆樓板面末端設置企口,并在外墻板的豎直接縫位置設計減壓空腔,這樣能有效地防止水的滲透;聚乙烯堵漏棒材對PC外墻全部的橫向拼接縫和縱向拼接縫進行塞縫,并用聚氨酯密封膠填充;為了防止水泥漿堵塞空腔,水從拼接處流出。相鄰PC板吊裝定位后,采用自密性封膠帶密封間隙,保證有效防止。

           ①雖然本工程外墻防水采用的是聚氨酯密封膠,但市場上建筑常用的聚氨酯密封膠有SR膠、PU膠和聚氨酯密封膠或SPU聚氨酯密封膠等,每種材料也各有著不同的性質。之前分析過由于現在對聚氨酯密封膠在外墻防水上沒有明確的規定,所以從設計到施工上用各種聚氨酯密封膠的都有,真的是很隨意。

           ②對裝配式外墻聚氨酯密封膠施工質量現場檢測手段G乏。直接影響PC建筑的外墻防水功能的有聚氨酯密封膠的深度、范圍、粘結力等,但現在對PC外墻防水聚氨酯密封膠現場檢查仍然是人工進行肉眼觀察,用尺子測量,這樣測出的結果存在著很大的不確定性,檢查結果也是不能確信。

           ③目前我國對裝配式建筑外墻防水的研究停留在設計和施工階段,對密封材料的研究甚少,尤其是在密封材料的耐久性和后期的維護上。以后期維護更換為例,基本上未進行對應的研究措施,存在著很大的不確定性,只能參考常規產品進行評價和維護。www.hryfc.com

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