Concrete pavement mixture design and analysis (MDA) : effect of aggregate systems on concrete mixture properties.

Details

• Creators:
  Ley, Tyler ; Cook, Daniel ; Fick, Gary
• Corporate Creators:
  Iowa State University. National Concrete Pavement Technology Center
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Concrete pavements
  • Mix design
  • Water cement ratio
  • Specifications
  • Workability
  • Aggregate gradation
  • Admixtures
  • Viscosity
• Publication/ Report Number:
  Part of InTrans Project 09-353
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design
• Abstract:
  For years, specifications have focused on the water to cement ratio (w/cm) and strength of concrete, despite the majority of the volume ; of a concrete mixture consisting of aggregate. An aggregate distribution of roughly 60% coarse aggregate and 40% fine aggregate, ; regardless of gradation and availability of aggregates, has been used as the norm for a concrete pavement mixture. Efforts to reduce the ; costs and improve sustainability of concrete mixtures have pushed owners to pay closer attention to mixtures with a well-graded ; aggregate particle distribution. In general, workability has many different variables that are independent of gradation, such as paste ; volume and viscosity, aggregate’s shape, and texture. A better understanding of how the properties of aggregates affect the workability ; of concrete is needed. ; The effects of aggregate characteristics on concrete properties, such as ability to be vibrated, strength, and resistivity, were investigated ; using mixtures in which the paste content and the w/cm were held constant. The results showed the different aggregate proportions, the ; maximum nominal aggregate sizes, and combinations of different aggregates all had an impact on the performance in the strength, ; slump, and box test.
  More +
• Format:
  PDF
• Funding:
  Part of DTFH61-06-H-00011 Work Plan 25
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26335/dot_26335_DS1.pdf
• File Type:
  [PDF - 1.07 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:a2699338b9ee77f075f2496b0d4e9c06ee2999f0a97b2ea5e5035c1180cb5cbe