详情

Corrosion propagation monitoring legacy samples and forensic analysis on selected samples.

项目名称：	Corrosion propagation monitoring legacy samples and forensic analysis on selected samples.
摘要：	In the past, most studies trying to understand corrosion of reinforcing steel, due to project duration limitations: usually terminate the tests shortly after corrosion initiates. In opposition thereto, some studies have been carried out to better understand the amount of corrosion products that cause cracks (typically in concrete with no supplementary cementitious materials), used methodologies to accelerate corrosion of the reinforcing steel. But, corrosion products built up from accelerated approaches might deviate significantly from the built up that take place under natural corroding (or moderately accelerated) cases. Legacy samples exposed outdoors for 27 years and indoor samples prepared in 2016 (binary and ternary concrete mixes) will be used to investigate corrosion propagation. For outdoor samples, it is known that a number of rebars are corroding and several samples now display cracks. Similarly, the rebar of several indoor samples are corroding. Monitoring the propagation stage for a long period of time is relevant. TriDurLE Year 1 funded the monitoring of legacy samples. Year 2 will allow to continue monitoring and to assess corrosion extent on selected samples that will be terminated (forensic analysis). If possible, the chloride concentration at the rebar depth will be determined on terminated samples. In addition, the steel bars will be cleaned and the corrosion morphology examined. The maximum corrosion pit depth will be measured and the cross sectional loss of steel bars will also be estimated.
状态：	Active
资金：	$98,075
资助组织：	Transportation Infrastructure Durability & Life Extension<==>Florida Atlantic University Dept. of Ocean & Mechanical engineering
项目负责人：	Kline, Robin
执行机构：	Florida Atlantic University Dept. of Ocean & Mechanical engineering
开始时间：	20210901
预计完成日期：	20220930
实际结束时间：	20220930
主题领域：	Highways；Maintenance and Preservation