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防水卷材用油要解决钢筋锈蚀问题

发布人:河北洋泽化工   发布时间:2017-09-16

目前,我国公路建设正处于高速发展时期,公路总里程已超过195万公里,其中高速公路总里程超过4万公里,用10年的时间走过了发达   40年的发展历程;随着公路里程的延长和桥梁的增多,桥梁铺装及桥梁结构在使用过程中所暴露的缺陷也越来越多,如由于我国水泥混凝土桥梁设计大部分采用简支、简支连续桥面或连续梁结构,在连续桥面的负弯矩区受汽车载荷作用下,不可避免地产生表面混凝土裂缝,即使在桥面其它部位也会因温度或湿度的变化而出现细微裂纹,由于这些裂缝和裂纹的存在,若不及时处理,雨水就会渗入梁体发生碱集料反应、钢筋锈蚀等,从而影响混凝土桥梁的耐久性。因此,_冻融破坏、钢筋锈蚀、碱集料反应等成为路桥工程领域函待解决的问题之一,很多桥梁就因水害而导致其远未达到其设计寿命时,就出现桥面板破碎、铺装层松散剥离等问题而需要早期加固维修或提前终止运营,大大降低了桥梁的营运效益。   严重的是,它还会对车辆行驶舒适性、   性构成潜在威胁。随着高速公路的快速建设,桥梁在道路中的比重越来越大,这些问题若不及时解决,将严重影响公路的运营。研究表明,上述这些破坏很大程度上是由于水进入混凝土结构内部,导致钢筋锈蚀而引起的。

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