Characterizing and Quantifying the Shrinkage Resistance of Alkali Activated (Cement Free) Concrete and Evaluating Potential Methods for Reducing Early Age Cracking In Pavements and Bridges

Concrete is one of the most commonly used construction materials for building nation's infrastructure such as roadways, bridges, tunnels, and buildings, with a per-capita consumption of more than two tons. The most energy consuming and expensive component of concrete is Portland cement, which accounts for more than 70% of the raw material cost towards producing concrete. One metric ton of Portland cement production consumes about 5,792,000 BTU of energy. In addition to the cost and vast energy consumption, cement manufacturing processes releases significant amount of into CO₂ the atmosphere. The chemical reactions of raw materials during pyro-processing produce about 0.54 tons of CO₂ for every ton of cement manufactured. Another 0.43 tons of per CO₂ ton of cement is released from the fuel used for burning the raw materials. Thus it is not surprising that cement manufacturing process accounts for 4-5% of global CO₂ emission and it touches on wide range of sustainability issues including climate change, pollution, solid waste land filling and resources depletion. A solution to address these environmental and energy challenges is to develop a sustainable alternative binding material that can replace the whole or at least part of the cement used in concrete. Significant effort has been invested in developing alternative binding materials by activating commonly available industrial by-products, such as Fly ash (FA) and Granulated blast furnace slag (GGBFS) using alkalis. The resulting concrete is called as alkali activated concrete (AAC) (also known as cement free /Geopolymer concrete).

Language

  • English

Project

  • Status: Proposed
  • Funding: $86200.00
  • Contract Numbers:

    49997-24-25

  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    University Transportation Research Center

    City College of New York
    Marshak Hall, Suite 910, 160 Convent Avenue
    New York, NY  United States  10031
  • Project Managers:

    Eickemeyer, Penny

  • Performing Organizations:

    Clarkson University

    ,    
  • Principal Investigators:

    Peethamparan, Sulapha

  • Start Date: 20140315
  • Expected Completion Date: 20151231
  • Actual Completion Date: 0
  • Source Data: RiP Project 36159

Subject/Index Terms

Filing Info

  • Accession Number: 01530124
  • Record Type: Research project
  • Source Agency: University Transportation Research Center
  • Contract Numbers: 49997-24-25
  • Files: UTC, RiP
  • Created Date: Jul 8 2014 1:00AM