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You searched on: Author: dale bentz

Displaying records 121 to 130 of 210 records.
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121. Influence of Shrinkage-Reducing Admixtures on Early-Age Properties of Cement Pastes
Published: 10/11/2006
Author: Dale P Bentz
Abstract: Because most shrinkage-reducing admixtures (SRAs) significantly reduce the surface tension of a cement paste pore solution, they will naturally influence all physical properties and processes that are dependent in some way on surface tension. Such p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860656

122. Curing, Hydration, and Microstructure of Cement Paste
Published: 9/13/2006
Authors: Dale P Bentz, Paul E Stutzman
Abstract: This paper compares the hydration characteristics and microstructures of cement pastes with water-to-cement ratios (w/c) of 0.35 and 0.435, cured under saturated and sealed conditions. Degree of hydration is quantified by loss on ignition measuremen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860599

123. 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

124. 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

125. 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

126. 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

127. 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

128. 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

129. 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

130. 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



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