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You searched on: Author: chiara ferraris

Displaying records 31 to 40 of 92 records.
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31. Virtual Cement and Concrete
Published: 9/1/2009
Authors: Jeffrey W Bullard, Chiara F Ferraris, Edward Joseph Garboczi, Nicos Martys, Paul E Stutzman, Judith Ellen Terrill
Abstract: Design and optimization of cement or concrete mixes typically is accomplished by intensive trial-and-error experimentation, primarily because the design space has many parameters and because interactions between these parameters are incompletely unde ...

Published: 8/3/2009
Authors: Chiara F Ferraris, Zughuo Li, Mona Mohseni, Nicholas Franson
Abstract: Oil is the most used standard material for the calibration of rheometers. Other products are used to calibrate flow devices, i.e., the flow table is calibrated using a mixture of oil and silica powder. The oil is a Newtonian liquid while the oil-sili ...

33. Rheological Properties of Cement Pastes: A Discussion of Structure Formation and Mechanical Property Development
Published: 11/11/2008
Authors: Gaurav Sant, Chiara F Ferraris, Jason Weiss
Abstract: The objective of this paper is to examine the evolution of rheological properties (e.g. yield stress) and to evaluate the use of these properties as a way to monitor structure formation and mechanical property development in cementitious systems. The ...

34. Etude de la mesure de la contrainte seuil l aide d une plaque mobile : application aux p tes de ciment
Published: 10/1/2008
Authors: Vincent Picandet, Chiara F Ferraris
Abstract: Un dispositif de conception assez simple a été développé pour mesurer directement le seuil de cisaillement de diverses suspensions concentrées. Il consiste en une plaque immergée verticalement dans le mat&eac ...

35. Parallel-Plate Rheometer Calibration Using Oil and Lattice Boltzmann Simulation
Published: 10/11/2007
Authors: Chiara F Ferraris, Nicos Martys, M R Geiker, N V. Muzzatti
Abstract: The flow in traditional rotational rheometers is well known and rheological parameters such as viscosity can be calculated relatively easily. On the other hand, when the fluid is a suspension that contains particles with a diameter up to 2 mm, these ...

36. Acoustic Sensing of Hydrating Cement Slurries: An Exploratory Study
Published: 10/10/2007
Authors: Vincent A Hackley, L -S Lum, Chiara F Ferraris

37. Calibration of Modified Parallel-Plate Rheometer Using Standard Oil and Lattice Boltzmann Simulation
Published: 10/3/2007
Authors: Chiara F Ferraris, M R Geiker, Nicos Martys, N V. Muzzatti
Abstract: Fluid flow patterns in traditional rotational rheometers are generally well known and rheological parameters such as viscosity can be easily calculated from experimental data of single phase fluids and analytical solutions of the patterns. However, w ...

38. Feasibility of Using a Concrete Mixing Truck as a Rheometer(Orlando, Florida)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7447
Published: 9/19/2007
Authors: Chiara F Ferraris, Roy Cooley, Joe Grein, Max A Peltz, Michael Topputo, Steve Verdino
Abstract: The goal of the tests reported here was to further determine the feasibility of using a concrete mixing truck as a rotational rheometer. This work is the continuation of preliminary tests [ , ] that seemed to indicated that the yield stress and the ...

39. Cement and Concrete Materials Research at the National Institute of Standards and Technology (NIST)
Published: 9/5/2007
Authors: Edward Joseph Garboczi, Dale P Bentz, Jeffrey W Bullard, Chiara F Ferraris, Nicos Martys, Max A Peltz, Sudalin Rodrigues, Paul E Stutzman, Kenneth Alan Snyder, John A. Winpigler
Abstract: The materials science of cement and concrete is the focus of the Inorganic Materials Group at the National Institute of Standards and Technology (NIST). These experimental and computational research efforts include component and finished materials ch ...

40. Computational Model Predictions of Suspension Rheology: Comparison to Experiment
Published: 7/25/2007
Authors: Nicos Martys, Chiara F Ferraris, V Gupta, Josephine H Cheung
Abstract: Predicting the rheological properties of fresh concrete, mortars, and cement paste from first principles remains a great challenge. While progress has been made in modeling the rheological properties of idealized hard sphere-like suspensions, there i ...

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