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You searched on: Author: dale bentz

Displaying records 141 to 150 of 194 records.
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141. Drying/Hydration in Cement Pastes During Curing
Published: 11/1/2001
Authors: Dale P Bentz, K K Hansen, H D Madsen, F A Vallee, E J Griesel
Abstract: As concrete cures in the field, there is a constant competition for the mixing water between evaporation and hydration processes. Understanding the mechanisms of water movement in the drying/hydrating cement paste is critical for designing curing sy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860282

142. Multi-Scale Microstructural Modeling to Predict Chloride Ion Diffusivity for High Performance Concrete
Published: 11/1/2001
Authors: Dale P Bentz, Edward Joseph Garboczi
Abstract: As durability issues become increasingly prominent in concrete design, the need to predict the transport properties of a given concrete mixture becomes critical. For many degradation scenarios (corrosion, sulfate attack, etc.), the diffusion coeffic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860207

143. The Effect of Statistical Fluctuation, Finite Size Error, and Digital Resolution on the Phase Percolation and Transport Properties of the NIST Cement Hydration Model
Published: 10/1/2001
Authors: Edward Joseph Garboczi, Dale P Bentz
Abstract: The National Institute of Standards and Technology (NIST) cement hydration model starts with a three-dimensional digital image of cement particles, and then uses cellular automaton rules to simulate the reaction of cement with water and the developm ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860746

144. Sorptivity-Based Service Life Predictions for Concrete Pavements
Published: 9/1/2001
Authors: Dale P Bentz, M A Ehlen, Chiara F Ferraris, Edward Joseph Garboczi
Abstract: The degradation of concrete pavements is often controlled by the transport of a deleterious species (chloride or sulfate ions, or water in the case of freeze/thaw) into the concrete. With this in mind, a three-year research project, funded by the Fe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860329

145. Concrete Optimization Software Tool User's Guide
Published: 7/1/2001
Authors: M J Simon, Dale P Bentz, James J Filliben
Abstract: This user's guide provides instructions for and examples of using the Concrete Optimization Software Tool (COST), a joint product of the Federal Highway Administration and the National Institute of Standards and Technology. COST provides an internet ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860352

146. Computer Modeling of the Replacement of Coarse Cement Particles by Inert Fillers in Low W/C Ratio Concretes: Hydration and Strength
Published: 3/1/2001
Authors: Dale P Bentz, J T Conway
Abstract: In concretes with water-to-cement (w/c) ratios below about 0.38, a portion of the cement particles will always remain unhydrated due to space limitations within the material. Thus, in many of the high-performance concretes currently being produced, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860293

147. Computer Modeling of the Replacement of "Coarse" Cement Particles by Inert Fillers in Low W/C Ratio Concretes: Hydration and Strength.
Published: 1/1/2001
Authors: Dale P Bentz, J T Conway
Abstract: In concretes with water-to-cement (w/c) ratios below about 0.38, a portion of the cement particles will always remain unhydrated due to space limitations within the material. Thus, in many of the high-performance concretes currently being produced, c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917006

148. Influence of Calcium Hydroxide Dissolution on the Transport Properties of Hydrated Cement Systems
Published: 1/1/2001
Authors: J Marchand, Dale P Bentz, E Samson, Y Maltais
Abstract: Calcium hydroxide is one of the main reaction products resulting from the hydration of Portland cement with water. It is also one of the more soluble phases found in hydrated cement systems. The influence of calcium hydroxide dissolution and its ef ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860327

149. Influence of Cement Particle Size Distribution on Early Age Autogenous Strains and Stresses in Cement-Based Materials
Published: 1/1/2001
Authors: Dale P Bentz, C Haecker, K K Hansen, O M Jensen, J F Oleson, H S Stang
Abstract: The influence of cement particle size distribution (PSD)on autogenous strains and stresses in cement pastes of identical water-to-cement ratio is examined for cement powders of four different finenesses. Experimental measurements include chemical sh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860231

150. Knowledge-Based Systems and Computational Tools for Concrete - Computer Integrated Knowledge Systems Combine Databases, Models, and Computing Tools to Address the Complex Nature of Concrete
Published: 12/1/2000
Authors: Edward Joseph Garboczi, Dale P Bentz, G J. Frohnsdorff
Abstract: Within the Building Materials Division at the National Institute of Standards and Technology (NIST), the Hypercon Partnership for High Performance Concrete Technology [(PHPCT) http://ciks.cbt.nist.gov/phpct/] program is working to develop the materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860233



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