Preliminary study to develop standard acceptance tests for pervious concrete.

Details

• Creators:
  Rangelov, Milena ; Nassiri, Somayeh ; Chen, Zhao
• Corporate Creators:
  Washington State University. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Washington (State). Dept. of Transportation. Research Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Compressive Strength Concrete Curing Concrete Pavements Pervious Concrete Curing Infiltration Porosity Porous Concrete Porous Pavements
• Publication/ Report Number:
  WA-RD 868.1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington;United States
• Corporate Publisher:
  Washington (State). Dept. of Transportation. Office of Research and Library Services
• Abstract:
  Pervious concrete pavements are permeable pavement systems that are desired for their role in stormwater
  
  management and runoff control. Increased popularity in pervious concrete pavement applications has raised the need for
  
  the development of quality control and quality-evaluation test procedures that are suitable for pervious concrete
  
  compared to traditional concrete. This brief study took a few preliminary steps in this direction by investigating the
  
  effect of specimen size on physical properties of pervious concrete such as hardened porosity and density as well as
  
  compressive strength (f’c). Moreover, the effect of four different curing regimens with combined air and moist curing
  
  over the four-week curing period on the 28-day f’c for both specimen sizes was investigated. Pervious concrete for this
  
  project was sampled from a Washington State Department of Transportation (WSDOT) paving project located on
  
  Vashon Island Ferry Terminal. Forty-eight four-inch and 40 six-inch diameter cylinders were cast and tested as part of
  
  the study. The results suggested that the four and six-inch diameter cylinders tested in the project demonstrated
  
  comparable values of hardened porosity and density, implying that either size specimen is suitable for quality control of
  
  such physical properties. Hardened density obtained in the laboratory for cast cylinders was within two percent or less
  
  of the fresh density obtained for the mixture in the field, which shows the suitability of the implemented specimen
  
  casting and compacting methods. Compressive strength of small cylinders was higher than that of large cylinders by 8-
  
  19%, depending on the curing method. The combination of two weeks of air curing and two weeks of moist curing
  
  resulted in the highest 28-day f’c for both specimen sizes. On the other hand, four weeks of air curing yielded the lowest
  
  f’c among the tested specimens. This trend was confirmed by thermogravimetric analysis conducted on cement paste
  
  samples from the four curing categories, which showed that moisture curing resulted in leaching of C-S-H and Ca(OH)2
  
  from the paste. The findings of the study need to be expanded in the future to include more mixtures and testing.
  
  
• Format:
  PDF
• Funding:
  Agreement T1462, Task 11
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:eaa1c25eb575926f8e763fff709d6eb3b2857664a0ccfc8e2cd4fc3ce58d53d44dfcf0193eebd28063a15d42c6927b7d713a810fb0a2466b59a30057cd9bfe8a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32510/dot_32510_DS1.pdf
• File Type:
  [PDF - 1.87 MB ]