DETERMINING THE ELASTIC PROPERTIES OF GEOPOLYMERS USING NONDESTRUCTIVE ULTRASONIC TECHNIQUES

被引：0
|
作者：
Lawson, Joseph [1 ]
Varela, Benjamin [1 ]
Panandiker, Raj S. Pai [1 ]
Helguera, Maria [1 ]
机构：
[1] Rochester Inst Technol, Dept Mech Engn, Rochester, NY 14623 USA
来源：
DEVELOPMENTS IN STRATEGIC MATERIALS | 2009年 / 29卷 / 10期
关键词：
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A non-destructive process, using ultrasonic techniques, for evaluating the elastic properties of a material is applied to a series of metakaolin based geopolymers with Si:AI ratios ranging from 1.49 to 6.4. This study evaluates the speed of sound of both a shear and longitudinal ultrasonic wave for each sample as well as the density's relationship to the Si:Al ratio. The trends observed for the Poison's ratio, elastic modulus, and speeds of sound showed a discontinuity around a Si:Al ratio of 3.1:1 supposedly due to the chemical changes between the poly(sialate-siloxo) (PSS) and poly(sialate-disiloxo) (PSDS) regions. Within the PSS region, the elastic modulus and Poison's ratio decreased linearly as the Si:Al ratio was increased. The trends within the PSDS region were discontinuous from the previous trends but not enough data was collected to sufficiently describe them.
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页码：143 / 153
页数：11
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