Application of Fuzzy Comprehensive Evaluation on Choosing Concrete Water Reducing Admixture

Water reducing admixture (WRA) has become one indispensable part of modern high performance concrete, and how to choose the excellent performance, better quality and lower price WRA has become one important problem in engineering construction. The fuzzy comprehensive evaluation method is applied to resolve this problem in the paper. In connection with the four primary factors and twenty two secondary factors of four kinds of WRA, we take the two-stage fuzzy comprehensive evaluation method to evaluate the admixture´s comprehensive performance and get the quantificational sequence of comprehensive performance, and therefore the ideal admixture is obtained. Results indicate that fuzzy comprehensive evaluation is an available means to choose WRA effectively.