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  1. Empirical relationships between viscosity and flow-time measurements from minislump tests for cement pastes formulated from self consolidating concrete

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    Description: The paper deals with the behavior of fluid cement pastes, formulated from Self Consolidating Concretes (SCCs), and the experimental correlation of fundamental rheological properties, such as the yield stress and the viscosity, with measurements from field tests, such as the mini-cone slump flow test. As a matter of fact, several...
    Keyword: Self-consolidating concrete and Cement rheology
    Creator: Nathan Tregger, Surendra P. Shah, and Liberato Ferrara
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2007
    Rights: All rights reserved
    Resource Type: Research Paper
  2. Health monitoring of early age concrete

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    Description: The setting and hardening process of concrete can be considered as the most critical time period during the life of a concrete structure. To assure high quality and avoid problems in performance throughout the life of the material, it is essential to have reliable information about the early age properties...
    Keyword: Structural health monitoring
    Creator: Thomas Voigt, Surendra P. Shah, and Zhihui Sun
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2004
    Rights: All rights reserved
    Resource Type: Other
  3. Health monitoring of early age concrete

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    Description: This presentation contains information on the keynote paper "Health Monitoring of Early Age Concrete". The presentation was delivered by Surendra P. Shah at CONSEC'04 in Seoul, Korea on June 30, 2004.
    Keyword: Structural health monitoring and Nondestructive testing
    Creator: Thomas Voigt, Surendra P. Shah, and Zhihui Sun
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2004-06-30
    Rights: All rights reserved
    Resource Type: Presentation
  4. Early Age Properties of Portland Cement Pastes Investigated with Ultrasonic Shear Waves and Numerical Simulation (preprint)

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    Description: In this paper, the correlation of reflection loss measured by an ultrasonic shear wave reflection method and the microstructure in cement-based material is investigated. Three cement pastes (Portland cement type I) with different water-cement ratios (0.35, 0.50 and 0.60) cured at 25 °C were examined. The ultrasonic shear wave reflection...
    Keyword: Nondestructive testing
    Creator: Guang Ye, Thomas Voigt, Klaas van Breugel, Surendra P. Shah, and Zhihui Sun
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2003
    Rights: All rights reserved
    Resource Type: Research Paper
  5. A Micromechanical Model for Characterization of Cement Paste at Early Age Validated with Experiments (preprint)

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    Description: The gradual evolution of the material properties of a cement-based material, i.e. the stiffness of cement paste, is the result of the continuous change of the microstructure with the progress of the hydration process. Based on an existing micromechanical model for the simulation of the shear and elastic modulus of...
    Keyword: Cement rheology and Structural health monitoring
    Creator: Guang Ye, Thomas Voigt, Klaas van Breugel, Surendra P. Shah, and Zhihui Sun
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2004
    Rights: All rights reserved
    Resource Type: Research Paper
  6. ABCM Update: A Better Maturity Meter?

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    Description: The Center for Advanced Cement-Based Materials (ACBM) is a consortium of researchers from: Northwestern University, University of Illinois at Urbana-Champaign, Purdue University, The University of Michigan, and The National Institute of Standards and Technology. This ACBM update contains information on the article "A better Maturity Meter?" by Surendra P. Shah...
    Keyword: Nondestructive testing
    Creator: Thomas Voigt and Surendra P. Shah
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2003-10
    Rights: All rights reserved
    Resource Type: Article
  7. Nondestructive Monitoring of Setting and Hardening of Portland Cement Mortar with Sonic Methods

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    Description: The setting and hardening process of concrete is considered to be the most critical time period during the life of a concrete structure. Previous research has been conducted on an ultrasonic wave reflection method that utilizes a steel plate embedded in the concrete to measure the reflection loss of shear...
    Keyword: Nondestructive testing
    Creator: Thomas Voigt and Surendra P. Shah
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2003
    Rights: All rights reserved
    Resource Type: Conference Proceeding
  8. Nondestructive Testing of Early Age Concrete. Cementing the Future

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    Description: The nondestructive, in-situ testing of early-age concrete properties is a crucial point for the progress of many construction projects in the building sector. The application of such techniques can establish e.g. the earliest possible form removal from concrete construction elements, thereby opening highways to traffic or releasing prestress from steel...
    Keyword: Nondestructive testing
    Creator: Surendra P. Shah and Thomas Voigt
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2003
    Rights: All rights reserved
    Resource Type: Article
  9. Mechanical Properties and Nanostructure of Cement-Based Materials Reinforced with Carbon Nanofibers and Polyvinyl Alcohol (PVA) Microfibers

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    Description: There have been numerous studies that have aimed at improving the low tensile strength, stiffness, and toughness of cementitious materials. This study aims to show that all of these characteristics can be greatly improved by the addition of ladder scale reinforcement at the nano and micro scale. Carbon nanofibers (CNFs)...
    Keyword: mechanical properties, nanofiber reinforcement, carbon nanofibers, polyvinyl alcohol microfibers, hybrid composites, and scanning electron microscopy
    Creator: Zoi S. Metaxa, Maria S. Konsta-Gdoutos, and Surendra P. Shah
    Owner: Chris Diaz
    Date Uploaded: 08/14/2017
    Date Modified: 08/17/2017
    Date Created: 2011
    Rights: All rights reserved
    Resource Type: Article