NIST logo

Publications Portal

You searched on:
Author: dale bentz

Displaying records 151 to 160 of 168 records.
Resort by: Date / Title

151. Protected Paste Volume in Concrete: Extension to Internal Curing Using Saturated Lightweight Fine Aggregate
Published: 11/1/1999
Authors: Dale P Bentz, Kenneth Alan Snyder
Abstract: One difficulty in the field use of high performance concrete is the extensive self-desiccation and autogeneous shrinkage that may occur due to its lower w/c ratio and the addition of silica fume to the mixture proportions. Several researchers have p ...

152. Effects of Cement Particle Size Disbribution on Performance Properties of Portland Cement-Based Materials
Published: 10/1/1999
Authors: Dale P Bentz, Edward Joseph Garboczi, C Haecker, O M Jensen
Abstract: The original size, spatial distribution, and composition of Portland cement particles have a large influence on hydration kinetics, microstructure development, and ultimate properties of cement-based materials. In this paper, the effects of cement ...

153. Studies of Hydration and Drying in Cement Pastes by Scanning X-Ray Absorptiometry
Published: 10/1/1999
Authors: K K Hansen, Dale P Bentz
Abstract: Hydration and drying in cement pastes are studied by the x-ray environmental chamber at DTU. By using the x-ray detector to detect changes in internal density (indicative of drying), the influence of w/c ratio on drying during hydration is quantitat ...

154. Transport Properties and Durability of Concrete: Literature Review and Research Plan
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6395
Published: 9/1/1999
Authors: Dale P Bentz, J R Clifton, Chiara F Ferraris, Edward Joseph Garboczi, J M Torrents
Abstract: The increased emphasis on life cycle cost analysis for building projects requires that new attention be focused on the service life and durability of concrete structures. While concrete is typically specified based on compressive strength and slump, ...

155. Effects of Cement PSD on Porosity Percolation and Self-Desiccation
Published: 8/1/1999
Author: Dale P Bentz
Abstract: The degree of self-desiccation in field concrete depends on the availability of external water to replace that consumed due to the chemical shrinkage that occurs during cement hydration. As the cement hydrates, the capillary porosity depercolates, d ...

156. SEM/X-Ray Imaging of Cement-Based Materials
Published: 8/1/1999
Authors: Dale P Bentz, Paul E Stutzman, C Haecker, S Remond
Abstract: Scanning electron microscopy and X-ray imaging techniques have been developed for imaging the complex microstructure of cement-based materials such as cement powder and fly ash. By combining the information available in the backscattered electron an ...

157. Digital Images and Computer Modelling
Published: 7/1/1999
Authors: Edward Joseph Garboczi, Dale P Bentz, Nicos Martys
Abstract: This chapter describes how digital images of porous materials can be analyzed to give information about the structure and properties of the material, describes various ways 3-D digital-image-based models can be generated to help understand real mater ...

158. An Argument for Using Coarse Cements in High-Performance Concretes
Published: 4/1/1999
Authors: Dale P Bentz, C J Hacker
Abstract: The NIST cement hydration microstructural model and experimental studies are used to investigate the effects of particle size distribution and water-to-cement ratio on hydration kinetics. Cement hydration is limited by the availability of water at t ...

159. A Hard Core/Soft Shell Microstructural Model for Studying Percolation and Transport in Three-Dimensional Composite Media
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6265
Published: 1/1/1999
Authors: Dale P Bentz, Edward Joseph Garboczi, Kenneth Alan Snyder
Abstract: This user's manual provides documentation and computer program listings for the three-dimensional hard core/soft shell microstructure model developed at the National Institute of Standards and Technology. The model has been developed to represent th ...

160. Diffusivity-Porosity Relation for Cement Paste
Published: 1/1/1999
Authors: Edward Joseph Garboczi, Dale P Bentz
Abstract: The development of a ionic diffusivity-porosity relation for cement paste, soundly based on microstructure, along with future developments in this area, are discussed. The importance of such relations for sulfate attack and other mechanisms of deter ...

Search NIST-wide:

(Search abstract and keywords)

Last Name:
First Name:

Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series