Changes in Workability and Air-void System of Concrete Due to Pumping

The main objective of this research project is to identify the most critical factors, in terms of concrete mix design, fresh properties and pumping characteristics, which significantly modify the fresh properties of concrete and the air-void system. The research will be carried out on pumpable conventional concrete and highly-flowable concrete, including self-consolidating concrete. The project will exist of two major parts. The first part consists of on-site measurements of variations in fresh properties and air-void system on different construction sites of the partners. The second part of the project includes a laboratory investigation on cement paste to test the effect of high shear rates and pressure on the rheology and air void system. Based on the outcome of the research, guidelines for fresh concrete properties and pumping parameters will be developed to limit the variations in rheology and the air void system, to guarantee the stability and durability of the concrete cast inside the formwork.

    Language

    • English

    Project

    • Status: Active
    • Funding: $191,394
    • Sponsor Organizations:

      RE-CAST UTC

      Rolla, MO  United States  65409
    • Project Managers:

      Feys, Dimitri

    • Performing Organizations:

      Missouri University of Science and Technology, Rolla

      1870 Miner Circle
      Rolla, MO  United States  65409
    • Principal Investigators:

      Feys, Dimitri

    • Start Date: 20150515
    • Expected Completion Date: 20180930
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01577153
    • Record Type: Research project
    • Source Agency: Research on Concrete Applications for Sustainable Transportation (RE-CAST)
    • Files: UTC, RiP
    • Created Date: Sep 28 2015 11:50AM