Unveiling synergistic effects of Nano-modification and CO2 curing on the durability and carbon footprint of precast elements

Carbon dioxide (CO2) curing of concrete, a process well-suited for precast operations, increases the strength and reduces the porosity while lowering carbon footprint in two ways: (1) directly through carbonation and (2) by reducing the amount of cement required to achieve target performance. The addition of nano-TiO2 to cementitious composites was also shown to reduce porosity and increase the strength of cementitious composites. Furthermore, previous studies showed that the combination of both nano-TiO2 addition and CO2 curing can increase the CO2 uptake and further reduce the porosity. However, the combined effect of both CO2 curing and nano-TiO2 addition on the transport properties was not studied, and nano-TiO2 is expensive; thus, this project aims to elucidate the combined effects of CO2 curing and nano-modification with respect to porosity, transport properties, and strength. This will enable the production of more durable, sustainable, and economical precast elements.


    • English


    • Status: Active
    • Sponsor Organizations:

      University of Illinois, Urbana-Champaign

      Department of Civil and Environmental Engineering
      Newmark Civil Engineering Laboratory
      Urbana, IL  United States  61801-2352

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590
    • Performing Organizations:

      Purdue University

      1040 South River Road
      West Lafayette, IN  United States  47907
    • Principal Investigators:

      Velay-Lizancos, Mirian

      Olek, Jan

      Tokpatayeva, Raikhan

    • Start Date: 20230901
    • Expected Completion Date: 20240831
    • Actual Completion Date: 0
    • USDOT Program: University Transportation Centers

    Subject/Index Terms

    Filing Info

    • Accession Number: 01893428
    • Record Type: Research project
    • Source Agency: Transportation Infrastructure Precast Innovation Center
    • Files: UTC, RIP
    • Created Date: Sep 18 2023 10:15PM