The economy of preventive maintenance of concrete bridges : final report.

Details

• Creators:
  Aboutaha, Riyad ; Zhang, Haotian
• Corporate Creators:
  Syracuse University. Department of Civil and Environmental Engineering
• Corporate Contributors:
  University Transportation Research Center
• Subject/TRT Terms:
  Chloride Diffusion Concrete Bridges Concrete Deterioration Cost Effectiveness Deterioration Maintenance Cost Nondestructive Tests Preventive Maintenance
• Publication/ Report Number:
  UTRC/RF Grant No: 49997-27-25
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final report
• Corporate Publisher:
  University Transportation Research Center
• Abstract:
  The most economical approach to maintain existing concrete bridges is by adopting an active preventive maintenance
  
  approach. An in-depth investigation of the combined deterioration effects of various deterioration mechanisms is needed
  
  to establish sound thresholds for harmful chemicals in concrete bridge elements. Such established thresholds are critical
  
  for cost-effective maintenance of concrete bridges. This study investigated the economy of preventive maintenance for
  
  concrete bridges. This report presents an in-depth chemical evaluation and preventive maintenance of existing highway
  
  concrete bridges. In addition, it presents implementation of the proposed preventive maintenance approach that is based
  
  on quantitative assessment of the material chemical condition of the bridge. This research project involved the following
  
  activities: (1) Review of the current bridge inspection manuals for concrete bridges evaluation, (2) Identification of
  
  various deterioration mechanisms, (3) Extensive presentation of chemical NDTs, (4) Establishment of chloride diffusion
  
  coefficient, (4) Required preventive maintenance measures for different levels of harmful compounds found in concrete
  
  bridges, (5) cost of various activities presented in items 1-4, (6) Comparison of concrete bridge maintenance costs using
  
  the current practice and the proposed preventive maintenance approach. Based on the finding of this study, preventive
  
  maintenance may require slightly higher initial cost, however, it leads to long-term cost saving over the service life of
  
  bridges.
  
  
• Format:
  PDF
• Funding:
  49997-27-25
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:3f0f58458e44b94be600e525f9d160cb23f46dbfa1b24e5aac80f4a98c4d9f7a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31205/dot_31205_DS1.pdf
• File Type:
  [PDF - 9.74 MB ]