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成都橋梁構件廠家闡述混凝土構件使用養護的方法
來源:發表時間:2021-05-25 15:49

    為了使已成型的混凝土構件趕快獲得脫模強度,以加快模板周轉,進步勞動生產率、添加產值,需求采納加快混凝土硬化的維護辦法。常用的構件維護辦法及其他加快混凝土硬化的辦法有以下幾種:蒸汽維護  分常壓、高壓、無壓三類,以常壓蒸汽維護運用最廣。 

    在常壓蒸汽維護中,又按維護設施的結構分為:維護坑(池)。首要用于平模機組流水工藝。因為結構簡單、易于辦理、對構件的適應性強,是首要的加快維護辦法。它的缺陷是坑內上下溫差大、維護周期長、蒸汽耗量大。立式維護窯。窯內分頂升和下降兩行,成型后的制品入窯后,在窯內一側層層頂升,一起處于頂部的構件經過橫移車移至另一側,層層下降,運用高溫蒸汽向上、低溫空氣向下活動的原理,使窯內天然構成升溫、恒溫、降溫三個區段。 

    立窯具有節省車間面積、便于接連作業、蒸汽耗量少等長處,但設備出資較大,維修不方便。③水平隧道窯平和模傳送流水工藝配套運用。構件從窯的一端進入,經過升溫、恒溫、降溫三個區段后,從另一端推出。其長處是便于進行接連流水作業,但三個區段不易分隔,溫、濕度不易控制,窯門不易封閉,蒸汽有外溢現象。折線形隧道窯。 

    這種維護窯具有立窯平和窯的長處,在升溫文降溫區段是歪斜的,而恒溫區段是水平的,能夠確保三個維護區段的溫度不同。窯的兩頭開口處也不外溢蒸汽。我國已推行運用。熱模維護  將底模和側模做成加熱空腔,通入蒸汽或熱空氣,對構件進行維護??捎糜诠潭ɑ蛞苿拥匿撃?,也可用于長線臺座。成組立模也屬于熱模維護型。

     太陽能維護  用于露天作業的維護辦法。當構件成型后,用聚氯乙烯薄膜或聚酯玻璃鋼等材料制成的維護罩將產品罩上,靠太陽的輻射能對構件進行維護。維護周期比天然維護約可縮短1/3~2/3,并可節省能源和維護用水,因而已在日照期較長的區域推行運用。新的維護辦法  近年來,世界各國研發和推行一些新的加快混凝土硬化的辦法,較常見的有熱拌混凝土和摻加早強劑。此外,還有運用熱空氣、熱油、熱水等進行維護的辦法。


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