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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JULY 2012 , Volume 12 , Number 2; Page(s) 153 To 162.
 
Paper: 

A NEW MODEL TO ESTIMATE THE YOUNG’S MODULUS OF POLYMER CONCRETE USING MICROMECHANICAL RELATIONS

 
 
Author(s):  MEHRDAD SHOKRIEH M.*, ELAHI M.
 
* IRAN UNIV. OF SCIENCE AND TECHNOLOGY, TEHRAN, IRAN
 
Abstract: 

This research is dedicated to the estimation of the effective elastic modulus of polymer concrete by a new proposed micromechanical model. The capability of the equivalent inclusion methods have been proved by numerous researches. The Mori- Tanaka (M-T) model is the most used homogenization scheme for two-phase composite materials. The M-T model provides good estimates of the stiffness tensor for two-phase composites with low to moderate volume fraction of aligned inclusions. However, when the volume fraction of reinforcing phase is high, the M-T model is unable to predict the stiffness tensor accurately. The major disadvantage of the M- T model is that when volume fraction is high, in the associated isolated inclusion medium (AIIM) the properties of the reinforcing phase does not affect the matrix properties. The idea of the current proposed model is that in high volume fraction in the associated isolated inclusion medium the matrix phase must be affected by the reinforcing phase properties. In order to evaluate this model with experimental results, twelve mixes with two different compositions were manufactured and tested. In addition, the results from other researches were used to evaluate this model. The validation of the proposed model with the experimental data and the results by other researchers shows remarkable predictive capability of this model.

 
Keyword(s): MICROMECHANICAL MODEL, EQUIVALENT INCLUSION METHOD, POLYMER CONCRETE, EFFECTIVE ELASTIC PROPERTIES
 
References: 
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