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Buildings & Construction

Building materials

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Displaying 551 - 575 of 925

Hotter Cements, Cooler Concretes

January 3, 2011
Author(s)
Dale P. Bentz, Casimir Bognacki, Kyle Riding, Victor Villarreal
In the past 50 years, portland cements have become progressively finer, in order to meet increasing demands for fast-track construction, etc. While finer cements produce higher early-age strengths, they also increase early-age heat release which can

Thermal Properties of High-Volume Fly Ash Mortars and Concretes

January 3, 2011
Author(s)
Dale P. Bentz, Max A. Peltz, Alejandro Duran-Herrera, P Valdez, Cesar Juarez
As sustainability moves to the forefront of construction, the utilization of high volume fly ash concrete mixtures to reduce CO2 emissions and cement consumption per unit volume of concrete placed is receiving renewed interest. Concrete mixtures in which

Evaluation of Sustainable High-Volume Fly Ash Concretes

January 1, 2011
Author(s)
Alejandro Duran-Herrera, Cesar Juarez, P Valdez, Dale P. Bentz
This article presents results of an experimental research work oriented to develop practical tools for the regional concrete industry, as well as to illustrate the potential benefits of the synergistic effect of an ASTM C 618 Class F fly ash (FA) produced

PERFORMANCE ASSESSMENTS INSIGHTS ON THE USE OF CEMENTS IN WASTE MANAGEMENT

November 7, 2010
Author(s)
David W. Esh, Jacob Philip, Kenneth A. Snyder
The use of cementitious materials has been proposed in a variety of waste management systems because these materials can have a variety of desirable performance characteristics: hydraulic isolation, chemical isolation, structural stability. Cementitious

Statistical Modeling Cement Heat of Hydration

September 15, 2010
Author(s)
Paul E. Stutzman
The heat of hydration of hydraulic cements results from the complex sets of phase dissolution and precipitation activity accompanying the addition of water to a cement. Heat of hydration is currently measured in one of two ways: 1) through an acid
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