HI-PERFORMANCE CONCRETE

This compilation contains 15 papers about high-performance concrete. High performance concrete is broadly defined as concrete that meets special performance and uniformity requirements that cannot always be achieved routinely by using only conventional materials and normal mixing, placing, and curing practices. The requirements may involve enhancements in ease of placement, compaction without segregation, long-term mechanical properties, early-age strength, volume stability, or service life in severe environments. Concretes possessing many of these characteristics often achieve higher strength. Therefore, high-performance concrete is often of high strength, but high-strength concrete may not necessarily be of high performance. Factors such as workability, placing and curing are discussed in one general reading paper. Another paper differentiates high-performance concrete from ordinary concrete by the application of special know-how and the judicious use of cementitious materials, chemical admixtures, and optimum water-cement ratio, through which concrete properties can be enhanced and its applications expanded. Other papers include the following ideas. To produce high-performance concrete, it is essential to have good quality coarse aggregates. It is shown that coarse aggregate mineralogy, strength, and/or bonding with the cement paste play an important role in concrete strength and elastic modulus. High-strength concrete can be proportioned to control creep and shrinkage. Economics drives the use of high-strength concrete, since its load-carrying capacity increases more than its cost. Thermal cracking of high-performance concrete is discussed, and the testing of high-performance concrete is considered. Long-term characteristics of very high-strength concrete is presented. The Virginia DOT experience in producing very low permeability concretes for repairs of pavement and bridge decks is described. The design and construction of a three-span externally post-tensioned bridge using 60 MPa concrete is presented.

• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Publication Date: 1996

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 106 p.

Subject/Index Terms

• TRT Terms: Admixtures; Bonding; Bridge decks; Cement paste; Chemicals; Coarse aggregates; Concrete; Concrete curing; Concrete mixing; Concrete pavements; Concrete placing; Concrete tests; Creep; Economics; High performance concrete; Modulus of elasticity; Performance; Permeability; Physical properties; Repairing; Shrinkage; Thermal stresses; Water cement ratio
• Uncontrolled Terms: Concrete properties; High performance; Thermal effects
• Old TRIS Terms: Concrete creep; Concrete shrinkage
• Subject Areas: Economics; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00722102
• Record Type: Publication
• Report/Paper Numbers: Compilation 32
• Files: TRIS
• Created Date: May 13 2001 12:00AM