Effect of Wet Screening in the Elastic Properties of Dam Concrete: Experimental In Situ Test Results and Fit to Composite Models

2016 ◽  
Vol 28 (12) ◽  
pp. 04016146 ◽  
Author(s):  
Carlos Serra ◽  
António Lopes Batista ◽  
Nuno Monteiro Azevedo
2002 ◽  
Vol 11 (2) ◽  
pp. 096369350201100
Author(s):  
E. S. Thian ◽  
N. H. Loh ◽  
K. A. Khor ◽  
S. B. Tor

Prior to the actual sintering process, a dilatometry study is performed to provide basic information and guidelines. This paper studies the effects of three sintering factors: sintering temperature, heating rate and holding time, on the densification rate of Ti-6Al-4V/HA composite parts. According to the in-situ test results, suitable values for the sintering factors can then be established.


Author(s):  
Rolf L. Larsson

Calculations of settlements of foundations on sand and silt are often made with methods that do not take into account the curved load-settlement relations. With reasonable accuracy, these methods can be used to calculate settlements only for the “normal” ground pressures for which they have been elaborated. For lower ground pressures the settlements become overestimated and for higher pressures they become increasingly underestimated. However, new design rules often contain varying demands for acceptable settlements depending on the type of structure. The failure criteria for bearing capacity are also more often defined in terms of large relative settlements than of actual failure. This leads to higher demands for accurate predictions of settlements over a wide range of possible ground pressures. New methods of predicting the load-settlement curves for shallow foundations have been proposed and two of these methods have been compared and calibrated against the results of a series of plate load tests in Sweden. Both methods appear to greatly improve the possibilities of accurate predictions of settlements and failure loads based on settlement criteria.


1993 ◽  
Vol 333 ◽  
Author(s):  
M. J. Plodinec ◽  
G. G. Wicks

ABSTRACTAn extremely important question for the eventual disposal of glass in natural environments is the relevance of laboratory testing of glass durability to the long-term performance of glass in geologic environments. The purpose of this study was to attempt to provide an empirical answer to that question, by applying the hydration thermodynamics approach (which has successfully been applied to laboratory tests of glass durability) to the results of longer-term testing in natural environments.The results show that hydration thermodynamics is a useful tool for explaining the effects of glass composition observed in in-situ tests, in several environments. Thus, it appears to provide a link between laboratory tests of glass durability and the results of in-situ tests in natural environments. Perhaps the most important conclusion of this effort is that the in-situ test results emphasize the importance of control of chemical composition during glass production as a means of achieving a durable glass.


Author(s):  
Roberto Q. Coutinho ◽  
Joaquim T. R. Oliveira ◽  
Leonardo M. Santos
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