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You searched on: Author: dale bentz

Displaying records 121 to 130 of 208 records.
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121. Curing, Hydration, and Microstructure of Cement Paste.
Published: 9/1/2006
Authors: Dale P Bentz, Paul E Stutzman
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900098

122. Water Movement During Internal Curing: Direct Observation Using X-Ray Microtomography.
Published: 9/1/2006
Authors: Dale P Bentz, P M Halleck, A S Grader, J W Roberts
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900097

123. Capillary Porosity Depercolation/Repercolation in Hydrating Cement Pastes via Low Temperature Calorimetry Measurements and CEMHYD3D Modeling
Published: 8/9/2006
Author: Dale P Bentz
Abstract: The percolation state of the capillary porosity in a hydrating cement paste has a large influence both on transport properties and on durability performance. Percolation can be examined both experimentally, using low temperature calorimetry (LTC) fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860634

124. Four-Dimensional X-Ray Microtomography Study of Water Movement During Internal Curing
Published: 8/9/2006
Authors: Dale P Bentz, P M Halleck, A S Grader, J W Roberts
Abstract: While the effectiveness of internal curing has been verified via a variety of experimental measurements, including internal relative humidity, autogenous shrinkage, restrained shrinkage, strength development, and degree of hydration, a direct observa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860653

125. Cement Hydration: Building Bridges and Dams at the Microstructure Level
Published: 7/12/2006
Author: Dale P Bentz
Abstract: The concurrent goals of cement hydration are to percolate (bridge) the original cement particles into a load-bearing network and to depercolate (dam) the original water-filled capillary porosity. The initial volume, particle size distribution, and f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860590

126. Report of Phase One Measurement and Analysis of Building Water System Contamination and Decontamination
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7351
Published: 7/3/2006
Authors: Stephen J. Treado, Mark A Kedzierski, Stephanie S Watson, Dale P Bentz, Nicos Martys, Kenneth D Cole
Abstract: This report describes the results of the first phase of a research project to evaluate how contaminants accidentally or intentionally introduced into the water supply might accumulate in building plumbing systems, and how these contaminants might be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861008

127. Virtual Testing of Cement and Concrete
Published: 5/10/2006
Authors: Dale P Bentz, Edward Joseph Garboczi, Jeffrey W Bullard, Chiara F Ferraris, Nicos Martys, Paul E Stutzman
Abstract: Concrete is a unique multi-phase, random, complex, and composite material that provides both strength and impermeability to engineered structures. Unlike most construction materials, the properties of concrete continue to develop over time and in pl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860546

128. Quantitative Comparison of Real and CEMHYD3D Model Microstructures Using Correlation Functions
Published: 2/8/2006
Author: Dale P Bentz
Abstract: A quantitative comparison of real and computer-generated (model) cement paste microstructures based on the analysis of three-dimensional image sets is presented. In addition to a visual presentation of extracted two-dimensional images, the compariso ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860551

129. Influence of Water-to-Cement Ratio on Hydration Kinetics: Simple Models Based on Spatial Considerations
Published: 2/1/2006
Author: Dale P Bentz
Abstract: sed on simple spatial considerations, models to describe the hydration kinetics of portland cement are developed and compared to existing experimental data, particularly in terms of the influence of the starting water-to-cement ratio (w/c) on hydrat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860579

130. Modeling the Influence of Limestone Filler on Cement Hydration in CEMHYD3D
Published: 2/1/2006
Author: Dale P Bentz
Abstract: The ASTM C150 standard specification for portland cement now permits the addition of up to 5 % limestone filler. While these and much higher levels of limestone filler substitution have been employed in Europe and elsewhere for many years, the chang ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860596



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