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滄州東海化工有限責任公司二維碼

防水卷材用油要解決鋼筋銹蝕問題

發布人:河北洋澤化工   發布時間:2017-09-16

目前,我國公路建設正處于高速發展時期,公路總里程已超過195萬公里,其中高速公路總里程超過4萬公里,用10年的時間走過了發達   40年的發展歷程;隨著公路里程的延長和橋梁的增多,橋梁鋪裝及橋梁結構在使用過程中所暴露的缺陷也越來越多,如由于我國水泥混凝土橋梁設計大部分采用簡支、簡支連續橋面或連續梁結構,在連續橋面的負彎矩區受汽車載荷作用下,不可避免地產生表面混凝土裂縫,即使在橋面其它部位也會因溫度或濕度的變化而出現細微裂紋,由于這些裂縫和裂紋的存在,若不及時處理,雨水就會滲入梁體發生堿集料反應、鋼筋銹蝕等,從而影響混凝土橋梁的耐久性。因此,_凍融破壞、鋼筋銹蝕、堿集料反應等成為路橋工程領域函待解決的問題之一,很多橋梁就因水害而導致其遠未達到其設計壽命時,就出現橋面板破碎、鋪裝層松散剝離等問題而需要早期加固維修或提前終止運營,大大降低了橋梁的營運效益。   嚴重的是,它還會對車輛行駛舒適性、   性構成潛在威脅。隨著高速公路的快速建設,橋梁在道路中的比重越來越大,這些問題若不及時解決,將嚴重影響公路的運營。研究表明,上述這些破壞很大程度上是由于水進入混凝土結構內部,導致鋼筋銹蝕而引起的。

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