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You searched on: Author: dale bentz

Displaying records 141 to 150 of 189 records.
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141. 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

142. 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

143. 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

144. 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

145. 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

146. 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

147. 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

148. User's Guide to the NIST Virtual Cement and Concrete Testing Laboratory. Version 1.0 (NISTIR 6583)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6583
Published: 11/1/2000
Authors: Dale P Bentz, Glenn P Forney
Abstract: This NISTIR serves as the user's manual for Version 1.0 of the Virtual Cement and Concrete Testing Laboratory (VCCTL). Using the VCCTL, a user may create starting microstructures of cement (gypsum, fly ash, etc.) particles in water, hydrate the micr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912871

149. Time-Dependent Diffusivities: Possible Misinterpretation Due to Spatial Dependence
Published: 9/1/2000
Authors: Dale P Bentz, X Feng, R. Douglas Hooton
Abstract: To accurately predict the service life of a reinforced concrete structure exposed to chloride ions, it is necessary to estimate the temporal dependence of the diffusivity coefficient. Due to continued hydration of the cement, etc., the diffusivity o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860262

150. A Computer Model to Predict the Surface Temperature and Time-of-Wetness of Concrete Pavements and Bridge Decks
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6551
Published: 8/1/2000
Author: Dale P Bentz
Abstract: This report provides documentation and example results for a computer model developed to predict the surface temperature and time-of-wetness (and time-of-freezing) of concrete pavements and bridge decks. The model is based on a one-dimensional finite ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860286



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