EVALUATION OF HYDRAULIC CEMENT CONCRETES CONTAINING SLAG ADDED AT THE MIXER

The study evaluated the effect of ground, granulated, iron blast-furnace slags on the properties of hydraulic cement concretes such as normally used in highway construction. Two cements with different alkali contents and two slags with different activity indices, 100 and 120, were used. Slags were used as replacements for portions of portland cement at 40%, 50%, and 65% by weight. This final report presents data on the properties of the freshly mixed concrete and the test results on time of set, heat of hydration, compressive strength, flexural strength, permeability, resistance to freezing and thawing, length change values, and the results of petrographic examinations including data on air voids, carabonation, and hydration. The test results for the laboratory specimens indicate that mixtures with the slags exhibit delay in set and slower development of compressive strength at early ages than do conventional mixtures, but have equal or better strengths at later ages. The incorporation of slag reduces the permeability of concrete considerably. It is conducted from this study that concretes in which up to 50% by weight of the cement has been replaced with a slag meeting the requirements of ASTM C989 and having a minimum activity index of 100 are satisfactory for use in highway construction. (Author) construction. (Author)

• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/19077
• Corporate Authors:

  Virginia Highway and Transportation Research Council

  Charlottesville, VA  United States 

  Virginia Department of Highways

  Traffic and Planning Division, 1221 East Broad Street
  Richmond, VA  United States  23219

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ozyildirim, C
  • Walker, H N
• Publication Date: 1985-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 38 p.

Subject/Index Terms

• TRT Terms: Air voids; Alkali; Compressive strength; Concrete; Flexural strength; Freeze thaw durability; Granulated slag; Heat of hydration; Hydraulic cement; Permeability; Petrography; Portland cement
• Old TRIS Terms: Air voids content; Alkalies
• Subject Areas: Construction; Geotechnology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00450916
• Record Type: Publication
• Report/Paper Numbers: FHWA/VA-86/01, VHTRC 86-R1
• Contract Numbers: 2069
• Files: TRIS, USDOT, STATEDOT
• Created Date: May 31 1987 12:00AM