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| Title |
SPECIFICATIONS AND CONSTRUCTION CONTROLS TO OBTAIN SMOOTH- RIDING BRIDGE DECKS
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| Accession No |
00208799 |
| Authors |
Mcknight, J W |
| Journal Title |
Highway Research Board Bulletin
|
Corp. Authors
/ Publisher |
Highway Research Board
|
| Publication Date |
19610000 |
| Abstract |
CONSTRUCTION PROCEDURES AND SPECIFICATION PROVISIONS THAT WILL PRODUCE SMOOTH RIDING BRIDGE DECKS ARE PRESENTED. IT IS POINTED OUT THAT THE BASIC PRINCIPLES THAT PRODUCE SMOOTH- RIDING CONCRETE SURFACES ARE THE SAME FOR PAVEMENTS PLACED ON GRADE AND BRIDGE DECKS. THE NEED FOR UNIFORM AND ACCURATE SUBGRADES IS ANALAGOUS TO THE NEED FOR DETERMINING ELEVATIONS THAT REFLECT CORRECT USE OF ACTUAL CAMBER MEASUREMENTS AND CALCULATED DEFLECTIONS DUE TO DEAD LOADS APPLIED DURING BRIDGE DECK CONSTRUCTION. FOR BRIDGE DECKS TO RIDE AS SMOOTHLY AS ADJACENT PAVEMENTS, THE SCREED GUIDES OR RAILS THAT SUPPORT PAVING EQUIPMENT ON BRIDGE DECKS MUST BE SET WITH THE SAME ACCURACY AND PRECISION EMPLOYED IN SETTING SIDE FORMS FOR CONCRETE PAVEMENTS ON GRADE. THE CRITERIA FOR PROPER PLACING AND FINISHING OF CONCRETE PLACED ON GRADE SHOULD BE FOLLOWED IN PLACING AND FINISHING BRIDGE DECKS. THE IMPORTANT DIFFERENCE IN THE TWO PROCEDURES IS THE TECHNIQUE OF WORKING IN THE LIMITED SPACE ON A BRIDGE DECK. CAREFUL PLANNING IS REQUIRED TO INCLUDE ALL THE NECESSARY STEPS IN FINISHING. TO INSURE ADEQUATE PLANNING AND PROCEDURES ESSENTIAL TO PRODUCE SMOOTH-RIDING BRIDGE DECKS, THE SPECIFICATIONS SHOULD INCLUDE REQUIREMENTS REGARDING: (1) THE PLACING AND FINISHING EQUIPMENT, (2) THE SUPPORTS FOR SCREED GUIDES OR RAILS, AND DETERMINATION OF ELEVATIONS FOR GUIDES OR RAILS, (3) THE PROPERTIES OF THE CONCRETE MIX, (4) MINIMUM METHODS FOR PLACING, CONSOLIDATING, AND FINISHING BRIDGE DECK CONCRETE, (5) CURING METHODS, AND (6) PRECONSTRUCTION CONFERENCE OF ENGINEER AND CONTRACTOR LEADING TO PREPARATION OF DETAILED PLAN FOR BRIDGE DECK PLACING AND FINISHING. /AUTHOR/ |
Supplemental
Information |
No 295, pp 6-18, 10 FIG |
| TRT Terms |
Bridge decks ; Concrete curing ; Concrete finishing ; Concrete mixing ; Construction management ; Curvature ; Deflection ; Measurement ; Pavements ; Riding qualities ; Screeds ; Smoothness ; Specifications ; Subgrade (Pavements) |
| Other Terms |
Camber; Construction control; Curing methods; Finishing; Pavement smoothness; Riding quality; Screed guides; Subgrade |
| Subject Areas |
H25 STRUCTURES DESIGN AND PERFORMANCE |
| TRIS Files |
HRIS |
| Database |
TRIS Online |
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TRT
