DESIGN AND COST STUDIES OF LIGHTWEIGHT CONCRETE HIGHWAY BRIDGES. REPORT OF AND INVESTIGATION BY THE LIGHTWEIGHT CONCRETE COMMITTEE

Results are given for a design and cost study to compare two 25 m span precast, prestressed concrete bridge decks, one designed for normal weight concrete, the other for lightweight concrete. The lightweight concrete design resulted in improved structural efficiency in terms of strength/weight ratios, with fewer structural components, and a consequent reduction in the number and size of bridge bearings. In spite of higher materials costs of lightweight concrete, the overall cost of construction of the basic bridge deck was marginally lower when using lightweight concrete. Further small savings may be expected as a result of easier handling and a shorter construction time. Some small reductions in cost may also be expected for the substructure. The lightweight concrete designs are likely to have better durability, with potential savings on long-term maintenance costs. (Author/TRRL)

• Corporate Authors:

  Concrete Society

  Devon House, 12-15 Dartmoutn Street
  London,   United Kingdom 
• Authors:
  • Raithby, K D
  • BARDHAN-ROY, B K
  • Follett, P
  • Freckingham, A S
  • LOW, A
  • Spratt, B H
• Publication Date: 1985-4

Media Info

• Features: Figures; References; Tables;
• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Analysis; Bridge bearings; Bridge decks; Bridge design; Bridges; Concrete; Construction; Costs; Design; Durability; Economic efficiency; Highway bridges; Lightweight concrete; Maintenance; Maintenance management; Numbers; Precast concrete; Prestressed concrete; Savings; Strength of materials; Structural design; Weight
• Uncontrolled Terms: Cost analysis; Efficiency; Maintenance costs
• ITRD Terms: 3415: Bearing (bridge); 3455: Bridge; 3482: Bridge deck; 3655: Construction; 224: Cost; 9011: Design (overall design); 5910: Durability; 4740: Lightweight concrete; 3847: Maintenance; 6432: Number; 4792: Precast concrete; 4796: Prestressed concrete; 5544: Strength (mater); 5485: Weight
• Subject Areas: Bridges and other structures; Construction; Design; Economics; Finance; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00451325
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1986 12:00AM