CHARACTERIZATION OF AIR VOIDS IN FRESH CEMENT PASTE THROUGH ULTRASONIC NONDESTRUCTIVE TESTING

2008 ◽  
Author(s):  
R. M. Kmack ◽  
L. J. Jacobs ◽  
K. E. Kurtis ◽  
J.-Y. Kim ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Cement Paste ◽  
Ultrasonic Nondestructive Testing ◽  
Air Voids

Assessment of Air Entrainment in Fresh Cement Paste Using Ultrasonic Nondestructive Testing

2010 ◽  
Vol 7 (1) ◽  
pp. 102452
Author(s):  
S. W. Dean ◽  
Richard M. Kmack ◽  
Kimberly E. Kurtis ◽  
Laurence J. Jacobs ◽  
Jin-Yeon Kim
Keyword(s):  
Nondestructive Testing ◽  
Cement Paste ◽  
Air Entrainment ◽  
Ultrasonic Nondestructive Testing

Automated characterization of weld defects detected by ultrasonic nondestructive testing

1999 ◽  
Author(s):  
Nathalie Kopp ◽  
Daniel Chauveau ◽  
Didier Flotte ◽  
Martine Lumbreras
Keyword(s):  
Nondestructive Testing ◽  
Ultrasonic Nondestructive Testing ◽  
Weld Defects

Characterization of entrained air voids in cement paste with scattered ultrasound

2006 ◽  
Vol 39 (6) ◽  
pp. 514-524 ◽  
Author(s):  
Wonsiri Punurai ◽  
Jacek Jarzynski ◽  
Jianmin Qu ◽  
Kimberly E. Kurtis ◽  
Laurence J. Jacobs
Keyword(s):  
Cement Paste ◽  
Air Voids ◽  
Entrained Air

Characterization of high strength cement paste with pristine graphite and heptane-graphite emulsion

2016 ◽  
Author(s):  
Aileen Vandenberg ◽  
Daniel Massucci ◽  
Steven Woltornist ◽  
Douglas Adamson ◽  
Kay Wille
Keyword(s):  
Cement Paste ◽  
High Strength

Quantitative Characterization of Hydration of Cement Pastes by Rietveld Phase Analysis and Thermoanalysis

2013 ◽  
Vol 539 ◽  
pp. 19-24 ◽  
Author(s):  
Yong Qi Wei ◽  
Wu Yao
Keyword(s):  
Phase Analysis ◽  
Cement Paste ◽  
Rietveld Method ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Quantitative Characterization ◽  
Cement Pastes ◽  
Hydration Mechanism ◽  
Spot Check

The quantitative characterization of hydration of cement pastes has always been one of focuses of researchers’ attention. Rietveld phase analysis (RPA), a combination of quantitative X-ray diffraction (QXRD) and the Rietveld method, supplies a tool of an enormous potential for that. Although a few of related researches were conducted by RPA, the reported attention was not paid to the neat cement paste with a low w/c ratio. Therefore, this work aimed at the quantitative study on hydration of such a cement paste chiefly by this method, meanwhile, cooperated with the hyphenated technique of thermogravimetry with differential scanning calorimetry (TG-DSC), as a spot check. Results indicated that RPA was a reliable method in quantitatively characterizing hydration of cement pastes, and gave a clear decription of evolution of all main crystal phases in cement pastes; and that the evolution of monosulphate(Afm_12) was also able to be tracked quantitatively. This will help to understand better the hydration mechanism of cement pastes, as well as to investigate quantitatively effects of mineral and chemical admixtures on hydration of composite cementitious systems.

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