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Displaying 151 - 175 of 924

Certification of SRM 2493:Standard Reference Mortar for Rheological Measurements

October 4, 2017
Author(s)
Alex Olivas, Chiara C. Ferraris, Nicos Martys, Edward Garboczi, Blaza Toman, William L. George
Rheological measurements are often performed using a rotational rheometer. In this type of rheometer, the tested fluid is sheared between two surfaces, one of which acts as the rotating surface [1]. Usually, the rotational velocity is imposed and the

Bond Enhancement of Repair Mortar via Biodeposition

September 4, 2017
Author(s)
Didier Snoeck, Jianyun Wang, Dale P. Bentz, Nele De Belie
The bond between repair mortars and existing concrete substrates is critical for the long-term performance and durability of the repaired structure. The carbonation state of the substrate is one of the parameters that may affect this bond strength. The

Role of Rheology in Achieving Successful Concrete Performance

June 1, 2017
Author(s)
Chiara F. Ferraris
Workability is one of the most important properties of concrete as it determines how easily the material can be placed. Workability affects many aspects of a concrete construction, including productivity (e.g. casting rate), processing (e.g. finishing)

Influence of Aggregate Characteristics on Concrete Performance

May 16, 2017
Author(s)
Dale P. Bentz, Scott Z. Jones, Paul E. Stutzman, Joshua Arnold, Michael Boisclair, Paul Rothfeld, Jussara Tanesi, Haejin Kim, Jose Munoz, Mengesha Beyene
While the influence of paste properties on concrete performance has been extensively studied and in many cases reduced to quantitative relationships, that between aggregate characteristics and concrete performance has not been investigated in detail. Based

Assessing Ash Quality and Performance

May 3, 2017
Author(s)
Larry Sutter, Dale P. Bentz
This chapter reviews ash quality and performance issues, with special emphasis on air entrainment and early-age performance. Recent developments in testing procedures are reviewed and recommendations are provided for standardized testing. One of the key

Using Terahertz Waves to Identify the Presence of Goethite via Antiferromagnetic Resonance

April 24, 2017
Author(s)
Edward J. Garboczi, David F. Plusquellic, Robert D. McMichael, Virgil Provenzano, Paul E. Stutzman, Jack T. Surek, Shin G. Chou, Shuangzhen Wang
Virtually every corrosion detection method reports only the presence of a material phase denoting probable corrosion, not its spectral signature. A signature specific to the type of iron oxide corrosion would not only confirm the presence of corrosion but
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