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      網站公告:濟南立博機械設備有限公司主要經營新型建材設備有:墻板機,墻板設備,復合墻板設備,輕質墻板設備,輕質墻板生產線等

      當前位置:立博機械 > 新聞中心 > 常見問題 >

      鐵鋁酸鹽水泥對輕質隔墻板工藝和產品性能的影響

      文章出處:立博機械設備集團發表時間:2015-08-27 11:39【

      1初凝快有利微孔形成

      采用空壓制泡技術引入微孔,對輕質墻板性能的改善具有極為重要的作用。普通硅酸鹽水泥初凝時間長,引入的氣泡在水泥漿初凝前就已經大量逸出損失,料漿泌水嚴重,無法形成理想的微孔結構。鐵鋁酸鹽水泥初凝快,引入的氣泡易于被迅速穩定在基體中。此外,引氣劑對水泥均有緩凝作用,初凝時間越短,越有利于穩泡,相互作用的結果是既達到了穩泡目的,又延長了鐵鋁酸鹽水泥實際初凝時間,有利于澆注過程的完成。

      2快硬縮短生產周期

      鐵鋁酸鹽水泥終凝時間為30min,在干熱養護條件下,制品6h即可脫模進入堆場,3d強度可達85%,7d即可出廠。而普通硅酸鹽水泥配制的輕質墻板必須在28d以后才能出廠。

      3保證了制品的輕質高強

      表觀密度740kg/m3的制品,抗壓強度可達到4.0~6.0MPa。板材垂直豎立,支距2.6 m做抗沖擊檢測時,墻板水平振幅達50 mm,板面不出現任何裂紋,制品柔韌性好。

      4微膨脹,輕質墻板不易干燥開裂

      普通硅酸鹽水泥輕質制品干縮值經測試為1.5 mm/m,而鐵鋁酸鹽水泥輕質制品干縮值僅為0.4 mm/m。鐵鋁酸鹽水泥的微膨脹性,可以緩解輕質墻板因干燥收縮引起的開裂。

      5堿度低,提高輕質墻板耐久性

      鐵鋁酸鹽水泥與抗堿玻纖匹配的耐久性好,與中堿玻纖匹配次之。但二者均遠遠高于硅酸鹽水泥與抗堿玻纖匹配的耐久性。以玻纖強度的保留率50%計算,中堿玻纖在普通硅酸鹽水泥漿液中為2.5~7.0 d;鐵鋁酸鹽水泥的堿度因比普通硅酸鹽水泥低,中堿玻纖在鐵鋁酸鹽水泥漿液中則為56~300 d。由此見,鐵鋁酸鹽水泥與中堿玻纖匹配的耐久性比普通硅酸鹽水泥與中堿玻纖匹配的耐久性要高20~40倍。根據甘肅省建材產品質檢站按照JC 666-1997要求測試,用該鐵鋁酸鹽水泥與中堿玻纖匹配生產的輕質墻板耐久性完全可滿足要求。而低堿度硫鋁酸鹽水泥必須與抗堿玻纖匹配才能滿足耐久性要求;普通硅酸鹽水泥與任何玻纖匹配都不能滿足耐久性要求。

      結論

      (1)鐵鋁酸鹽水泥作為膠結材料,對輕質墻板微孔的實現、縮短生產周期、輕質高強、提高抗干縮開裂、增強板材耐久性等提供了保證。是微孔輕質墻板理想的膠凝材料。

      (2)空壓制泡、穩泡加氣工藝,成泡率高、氣泡細小、均勻、穩定,使板材的保溫、隔熱等性能得到改善。


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