Study On Green Degree Evaluation System Of Wall Building Materials

The relationship between human and environment had been cared more and more in the 21st century. Green materials had been researched as the focus of the material, and how to evaluate the material's green degree had became one of the core issues in the research of the green material. The wall building material had been chose to research, the concept and the connotative meaning of green building material and green wall material had been discussed deeply, ideals from other product green degree's evaluate method had been analyzed and refered to, the fuzzy mathematics hierarchy process which based on the life cycle evaluation system had been used, and considering wall building material's environment influence, constructed a simply and operational wall building material green degree evaluation model had been constructed,and the green degrees of tweleve major wall building material had been evaluated by this model, finally, based on those evaluation values, wall building materials into different green degree grade had been divided. The main contents are as follow:①The wall building material's environment influence factors on each stage of the wall building material's full life cycle had been analyzed deeply, the basic characteristics of green building material and green wall material had been represented, the evaluate methods of material green degree now used commonly in the world had been analyzed and compared, especially the evaluation of the green building which had the close relationship with the green building material, all those work had refered to ideals and theories for green material's quantization assessment.②The green degree evaluation model's characteristics had been analyzed, the basic principles to construct green degree evaluation model had been brought out:all- round principle,point principle,combine static and dynamic principle,combine compatibility and differential principle,hierarchy principle,combine quantitative and qualitative principle.③The different green degree evaluation model's scope of application had been compared , their merits and demerits had been compared too, wall building material's environment influence characteristics had been analyzed detailed, the academic purpose and the operational purpose of constructing the wall building material green degree's evaluation model had been both considered , the ideal that use the fuzzy mathematics hierarchy process which based on the life cycle to construct the model had been presented, the basic frame and steps about how to construct the model had been described,too.④The influenced factor on green degree in each stage of the wall building material's life cycle had been analyzed, a hierarchy structure of the wall building material green degree's evaluation index had been built up, each index's weight had been calculated by use the comparison pair wise method and use the fuzzy mathematics hierarchy process, finally a evaluation standard for each index had been established according to the correlated standard, authorized rules and practice experience, and a simply and operational wall building material green degree evaluation model had been constructed.⑤The wall building material's each stage and synthesis green degree had been evaluated by using the constructed model. The evaluation result was accorded with the wall building material's reform direction; this model's scientific and operation character had just been proved. The green degree grade of wall building materials had been divided basing on the result.