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.

引用

页码：143 / 153

页数：11

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