格尔木地区普通钢筋混凝土现场暴露试验研究  

Field exposure test study of ordinary reinforced concrete in Golmud area

作　　者：王旭峰 张家畅 杨兵兵 

机构地区：[1]洛阳路桥建设集团有限责任公司,河南洛阳471700 [2]永城市交通运输局,河南永城476600 [3]酒泉职业技术学院,甘肃酒泉735000

出　　处：《中国建材科技》2017年第6期71-75,共5页China Building Materials Science & Technology

摘　　要：普通钢筋混凝土在格尔木盐渍土地区,因有害盐的侵入使混凝土过早开裂而不能具有很好的耐久性。为了研究普通钢筋混凝土在格尔木盐渍土地区的退化过程,现采用现场暴露的试验方法,利用非金属超声波检测仪对钢筋锈蚀引起混凝土裂缝的发展进行定期检测,采用电子天平对混凝土的质量损失进行定期检测,利用电化学工作站对钢筋的锈蚀情况进行定期检测。结果表明:相对动弹性模量评价参数可以更为有效的作为耐久性评价指标;盐渍土地区普通混凝土保护层厚度虽然可以对钢筋起到一定保护作用但是效果不够显著。Ordinary reinforced concrete in the Golmud saline soil area can not have good durability,because the Prematurely cracking of concrete due to the invasion of harmful salts. In order to study the degradation Process of ordinary reinforced concrete in Golmud saline soil area,field ex Posure test method is ado Pted.The non-metallic ultrasonic detector is used to examine the develo Pment of concrete cracks which caused by rebar corrosion.The electronic balance is used to Periodically check the quality loss of concrete The corrosion of steel bars is regularly tested by electrochemical workstations.The result shows that The relative elastic modulus evaluation Parameters can be more effective as the durability evaluation index.Although the thickness of ordinary concrete Protection layer can Play a certain role in Protecting steel in saline soil area, the effect is not remarkable enough.

关 键 词：耐久性 超声波 质量损失 电化学 

分 类 号：TU375[建筑科学—结构工程] U645[交通运输工程—船舶及航道工程]