This is a summary of the research that has been conducted and the experience that has been gained relative to the use of 2 types of permanent forming for bridge decks: prestressed panel subdecks and permanent steel forms. The use of the precast prestressed concrete panel technique in Texas, studies of 3 inservice bridges, and aspects such as strand development length and cyclic loading are discussed. Similar studies in Pennsylvania and Florida are also described. Experience and research results indicate that the prestressed panel subdeck with cast-in-place concrete slab is a reliable and suitable method for constructing simple span prestressed concrete girder bridges. It is noted that cracking in the bridge deck surface directly above the butt joints between the prestressed panels can be expected at many of the joints. The results of a survey of the use of permanent steel forms in 36 states are discussed, and comments are made on durability, time to corrosion, and chloride penetration. Evidence suggests that the durability of the concrete deck may have a more significant effect on the durability of the forms than the forms will have on the durability of the deck. Observations regarding cracking, spalling and moisture contents are also reported.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 18 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00157837
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 28 1977 12:00AM