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71. Application of Internal Curing for Mixtures Containing High Volumes of Fly Ash
Topic: Chemistry
Published: 8/1/2012
Authors: Igor de la Varga, Javier Castro, Dale P Bentz, Jason Weiss
Abstract: Sustainability has become an important issue in the concrete industry in recent years. One way to make concrete more sustainable is through the replacement of portland cement clinker with alternative cementitious materials such as fly ash. While fly ...

72. Using Viscosity Modifiers to Reduce Effective Diffusivity in Mortars
Topic: Chemistry
Published: 8/1/2012
Authors: Kenneth Alan Snyder, Dale P Bentz, Jeffrey M Davis
Abstract: Three viscosity modifiers (a commercial shrinkage-reducing admixture, a polypropylene glycol, and cellulose ether) are used to reduce the effective diffusivity of chloride ions through mortars during a one-year exposure. Two delivery mechanisms ...

73. Observing chemical reactions using Transmission Electron Microscopy
Topic: Chemistry
Published: 7/17/2012
Author: Renu Sharma

74. Kinetics of H atom attack on unsaturated hydrocarbons using spectral uncertainty propagation and minimization techniques
Topic: Chemistry
Published: 7/2/2012
Authors: David A Sheen, Claudette M Rosado-Reyes, Wing Tsang
Abstract: Unsaturated hydrocarbons are an important component of hydrocarbon fuels and intermediates in their oxidation. Under rich conditions, H atom attack is one of the principle pathways of the decomposition of these unsaturated compounds. Consequently, it ...

75. Usability of PIV Smartcards for Logical Access
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7867
Topic: Chemistry
Published: 6/28/2012
Authors: Emile L Morse, Mary Frances Theofanos, Yee-Yin Choong, Celeste Paul, Aiping L Zhang, Hannah Wald
Abstract: This paper presents the findings of a PIV usability pilot study conducted at NIST during the summer of 2010. The study focused on factors that affected users' perceptions and adoption of PIV smartcards. Based on observation of the study participants, ...

76. NICE: Creating a Cybersecurity Workforce and Aware Public
Topic: Chemistry
Published: 6/4/2012
Authors: Celia Paulsen, Ernest Leroy McDuffie, William D Newhouse, Patricia R Toth
Abstract: The National Initiative for Cybersecurity Education (NICE) aims to create an operational, sustainable, and continually improving program for cybersecurity awareness, education, training, and workforce development. As part of the initiative, the NICE ...

77. Incorporation of Phase Change Materials in Cementitious Systems via Fine Lightweight Aggregate
Topic: Chemistry
Published: 6/1/2012
Authors: Aaron Richard Sakulich, Dale P Bentz
Abstract: As infrastructure nears the end of its service life, society is facing an unprecedented maintenance crisis. A new technique that may be able to help address this crisis, extending the service life of bridge decks by reducing freeze/thaw damage th ...

78. Saturation molalities and standard molar enthalpies of solution of alpha-D-xylose(cr) in H2O(l); Standard molar enthalpies of solution of 1,4-beta-D-xylobiose(am), and 1,4-beta-D-xylotriose(am) in H2O(l)
Topic: Chemistry
Published: 5/14/2012
Authors: Robert Nathan Goldberg, Brian E Lang, Bruce Coxon, Stephen R. Decker
Abstract: The saturation molality of alpha-D-xylose(cr) in water was measured by using HPLC and is m(sat) = (8.43 ± 0.42) mol∙kg-1 at the temperature T = 298.15 K. It was also established that the anhydrous form of alpha-D-xylose(cr) is the crystalline ...

79. Concrete rheometers
Topic: Chemistry
Published: 5/1/2012
Authors: Chiara F Ferraris, Nicos Martys
Abstract: The scope of this chapter is to introduce the current technology for measuring the rheological properties of concrete. The need to evaluate or assess the flow properties of concrete has resulted in the invention or design and standardization of hundr ...

80. Total Scattering Cross Section Measurements Using a Dual Faraday Cup with a 5 Micron Aperture
Topic: Chemistry
Published: 4/25/2012
Authors: Scott A Wight, Andrew Robert Konicek
Abstract: Scattering in the variable pressure scanning electron microscope (VPSEM) affects image resolution and the ability to perform quantitative chemical measurements. However, the manner in which the total scattering cross section varies as a function of g ...

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