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:
  Air Voids Compressive Strength Flexural Strength Infiltration Mix Design Permeability Porosity Porous Concrete Test Procedures
• 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).
  
  
• Format:
  PDF
• Funding:
  PO 438832
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c89d2078a57f16066d49cd1fbceda44be40d625c1064abaef39c1c5ef72e3b08
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28281/dot_28281_DS1.pdf
• File Type:
  [PDF - 738.62 KB ]