Evaluation of mix designs and test procedures for pervious concrete.

Details

• Creators:
  Arhin, Stephen A. ; Noel, Errol C. ; Thomas, Janet
• Corporate Creators:
  Howard University
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Porous concrete
  • Mix design
  • Test procedures
  • Air voids
  • Compressive strength
  • Flexural strength
  • Permeability
  • Porosity
  • Infiltration
• Publication/ Report Number:
  DDOT-RDT-14-02
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington (District of Columbia)
• Corporate Publisher:
  District of Columbia. Dept. of Transportation
• Abstract:
  Pervious concrete is mixture of cement, aggregate, and water that provide a level of porosity which allows ; water to percolate into the sub-grade. It differs from the conventional concrete since it usually contains a ; smaller amount of fine aggregate. There is typically single size aggregate in pervious concrete which results in ; larger air void than conventional concrete. The District Department of Transportation (DDOT) constructed ; pavements in selected street alleys using pervious concrete on a pilot basis. DDOT does not currently have its ; own specifications for pervious concrete. As a result, this research was aimed at developing and testing five ; design mixes of pervious concrete to identify the appropriate mix which would provide the maximum ; compressive strength with an acceptable permeability rate and flexural strength. The tests were conducted ; on the five design mixes using three different types of compaction methods (self-consolidating, half-rodding ; and Standard Proctor Hammer). Based on the results, a design mix with a compressive strength of 3,500 ; pounds per square inch (psi) with a maximum coefficient of permeability of 57.82 inches per hour (in/hr) was ; selected. The maximum modulus of rupture of the selected mix was determined to be 565 psi. The in-situ ; infiltration tests conducted on at 3 locations in DC with the optimal pervious concrete mix yielded average ; infiltration rates between 86.1 and 208.7 in/hr. This falls within the typical infiltration rate of pervious ; concrete (i.e., 100 to 200 in/hr, on average).
  More +
• Format:
  PDF
• Funding:
  PO 438832
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28281/dot_28281_DS1.pdf
• File Type:
  [PDF - 738.62 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c89d2078a57f16066d49cd1fbceda44be40d625c1064abaef39c1c5ef72e3b08