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:
  • Porous concrete
  • Compressive strength
  • Concrete curing
  • Porous pavements
  • Concrete pavements Pervious concrete
  • porosity
  • infiltration
  • compressive strength
  • curing
• 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.
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• Format:
  PDF
• Funding:
  Agreement T1462, Task 11
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32510/dot_32510_DS1.pdf
• File Type:
  [PDF - 1.87 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:eaa1c25eb575926f8e763fff709d6eb3b2857664a0ccfc8e2cd4fc3ce58d53d44dfcf0193eebd28063a15d42c6927b7d713a810fb0a2466b59a30057cd9bfe8a