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Biofuel co-product uses for pavement geo-materials stabilization : final report, April 2010.

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    Iowa State University. Institute for Transportation
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    IHRB Project TR-582;InTrans Project 08-316
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Iowa
  • Edition:
    Final report
  • Corporate Publisher:
    Iowa. Dept. of Transportation
  • Abstract:
    The production and use of biofuels has increased in the present context of sustainable development. Biofuel production from plant

    biomass produces not only biofuel or ethanol but also co-products containing lignin, modified lignin, and lignin derivatives. This

    research investigated the utilization of lignin-containing biofuel co-products (BCPs) in pavement soil stabilization as a new application

    area. Laboratory tests were conducted to evaluate the performance and the moisture susceptibility of two types of BCP-treated soil

    samples compared to the performance of untreated and traditional stabilizer-treated (fly ash) soil samples. The two types of BCPs

    investigated were (1) a liquid type with higher lignin content (co-product A) and (b) a powder type with lower lignin content (coproduct

    B). Various additive combinations (co-product A and fly ash, co-products A and B, etc.) were also evaluated as alternatives to

    stand-alone co-products. Test results indicate that BCPs are effective in stabilizing the Iowa Class 10 soil classified as CL or A-6(8) and

    have excellent resistance to moisture degradation. Strengths and moisture resistance in comparison to traditional additives (fly ash)

    could be obtained through the use of combined additives (co-product A + fly ash; co-product A + co-product B).

    Utilizing BCPs as a soil stabilizer appears to be one of the many viable answers to the profitability of the bio-based products and the

    bioenergy business. Future research is needed to evaluate the freeze-thaw durability and for resilient modulus characterization of BCPmodified

    layers for a variety of pavement subgrade and base soil types. In addition, the long-term performance of these BCPs should be

    evaluated under actual field conditions and traffic loadings. Innovative uses of BCP in pavement-related applications could not only

    provide additional revenue streams to improve the economics of biorefineries, but could also serve to establish green road

    infrastructures.

  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:f199128b32f7de689642e0b9c93561ec5e16979c610f777a4bf529958729a82a7dd64c2e152254db65e3754442e6affc25f61f63b04d8dd375f37fc4d4973802
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  • File Type:
    Filetype[PDF - 2.32 MB ]
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