The scope of this research is to study the influence of grading of the aggregate on the mixing design and the strength of polymer concrete .
Also, the curing conditions, the modification of polymer and the application of coupling agent were investigated.
Based on the experimental results, two numerical methods were developed to be used in combining the aggregates to obtain the desired specific surface area and the grading of the aggregate.
A computer program was developed for one of the methods to give all the possible compositions of the aggregate.
Theoretical explanation is offered and a numerical example is worked out which illustrates the application of these methods.
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