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Browsing Civil Engineering by Author "Juenger, Maria C. G."

Now showing items 1-7 of 7

Effects of Construction Time and Coarse Aggregate on Bridge Deck Cracking

Riding, Kyle A.; Poole, Jonathan L.; Schindler, Anton K.; Juenger, Maria C. G.; Folliard, Kevin J. (2010-08-26)

Bridge deck temperature changes in the first few days after placement due to the concrete heat of hydration and changes in ambient conditions have long been identified as a significant contributor to early-age cracking. ...
Evaluation of Temperature Prediction Methods for Mass Concrete Members

Riding, Kyle A.; Poole, Jonathan L.; Schindler, Anton K.; Juenger, Maria C. G.; Folliard, Kevin J. (2010-08-06)

Over the years, many different simplified prediction methods have been developed to predict the temperature development within mass concrete members. This paper compares calculated temperature values from three commonly-used ...
Methods for Calculating Activation Energy for Portland Cement

Poole, Jonathan L.; Riding, Kyle A.; Folliard, Kevin J.; Juenger, Maria C. G.; Schindler, Anton K. (2010-08-06)

The accurate prediction of thermal gradients in concrete calls for models that characterize the temperature sensitivity of the hydration of cementitious materials. The most common method used for this purpose is the ...
Modeling hydration of cementitious systems

Riding, Kyle A.; Poole, Jonathan L.; Folliard, Kevin J.; Juenger, Maria C. G.; Schindler, Anton K. (2013-04-08)

Concrete performance, including strength, susceptibility to delayed ettringite formation, and residual stress development are dependent on early-age temperature development. Concrete temperature prediction during hydration ...
Quantification of Effects of Fly Ash Type on Concrete Early-Age Cracking

Riding, Kyle A.; Poole, Jonathan L.; Schindler, Anton K.; Juenger, Maria C. G.; Folliard, Kevin J. (2010-08-06)

The mechanisms that contribute to early-age cracking are complex. Determining the relative importance of each mechanism as well as the combined cracking potential for a given concrete material is essential for the ...
Simplified Concrete Resistivity and Rapid Chloride Permeability Test Method

Riding, Kyle A.; Poole, Jonathan L.; Schindler, Anton K.; Juenger, Maria C. G.; Folliard, Kevin J. (2010-08-06)

A simplified method of measuring concrete resistivity, as an index of permeability, has been developed that is similar to ASTM C1202 or the rapid chloride permeability test (RCPT). It is significantly faster and easier ...
Temperature Boundary Condition Models for Concrete Bridge Members

Riding, Kyle A.; Poole, Jonathan L.; Schindler, Anton K.; Juenger, Maria C. G.; Folliard, Kevin J. (2010-08-06)

The temperature development of mass concrete elements is strongly dependent on constituent materials and mixture proportions, as well as the formwork type, geometry, and environmental conditions. This paper presents a ...