SUPERPLASTICIZED CONCRETE FOR REHABILITATION OF BRIDGE DECKS ANDD HIGHWAY PAVEMENTS. PHASE 1 INTERIM REPORT

The object of this research was to develop guidelines for assuring the trouble-free placement of tough, high-strength, high density, durable concrete for bridge deck construction through the use of superplasticizers and steel fibers. The study was made in two phases. The first investigated the basic properties of concrete made witth superplasticizers through the use of experimental mixtures conforming to the requirements dictated by statistically valid factorial designs, so that analysis of variance could be used in the evaluation. The second phase extended the findings into an evaluation off superplasticized concretes containing steel fibers. This report describes the first phase study of the statistical evaluation of superplasticized concrete properties. Two mixes, one with medium workability and high cement content suitable for bridge deck replacement and another with high workability suitable for structural and pavement concrete were selected for intensive study. For these mixes, properties of the fresh concrete (slump, vebe tiime, flow table spread, aiir content, initial and final setting times) are reported. The effects of retempering are described. The influence of three types of cements on the properties of plastic and hardened concrete is explained. Complete results of the following tests are presented: compressive strength, tensile strength, flexural strength, static modulus of elasticity, dynamic modulus of elasticity, pulse velocity and dry unit weight at 1, 3, 28 and 90 days curing. The selected concretes had high durability and satisfactory resistance against deicer scaling. (Author) scaling. (Author)

• Corporate Authors:

  South Dakota School of Mines and Technology, Rapid City

  Department of Civil and Environmental Engineering, 500 East St Joseph Street
  Rapid City, SD  United States  57701

  Department of Transportation

  Office of University Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ramakrishnan, V
  • Coyle, W V
• Publication Date: 1981-1

Media Info

• Features: Figures; References; Tables;
• Pagination: 262 p.

Subject/Index Terms

• TRT Terms: Bridge decks; Compressive strength; Concrete; Durability; Fiber reinforced concrete; Flexural strength; Modulus of elasticity; Pavements; Physical properties; Pulses; Statistical analysis; Superplasticizers; Tensile strength; Velocity; Workability
• Uncontrolled Terms: Concrete properties; Pulse velocity
• Old TRIS Terms: Highway pavement
• Subject Areas: Bridges and other structures; Construction; Data and Information Technology; Highways; Maintenance and Preservation; Materials; Pavements; I32: Concrete;

Filing Info

• Accession Number: 00451659
• Record Type: Publication
• Report/Paper Numbers: DOT/RSPA/DPB-50/81/3, SUSM & T-CDT805
• Contract Numbers: DOT-RC-92035
• Files: TRIS, USDOT
• Created Date: Mar 31 2000 12:00AM