The Research Of Construction Technology And Comprehensive Evaluation For New Block Of Desulfurization Gypsum Material

The wall is one of the most important parts of the buildings. In the request of "building materials innovation, development of new building materials" that is put forward by the country, new materials of wall has been rapidly developed in China combining the consideration of vigorously saving energy, saving capacity, saving land, increasing usage area, resisting earthquakes and improving the people’s living level. However, at present a large number of applications is still a clay brick and aerated block with cement as base material, this paper studies the gypsum block wall, aimed at effectively using the industrial by-product gypsum- desulfurization gypsum block production, widely used in building, to improve human living environment, waste, environmental protection and energy saving, saving land resource is of great significance. Will have a large number of thermal power plant desulphurization gypsum(CaSO4 ? 2H2O) processed into CaSO4 1/2 H2 O, as base material.(1)Based on the requirements of the new wall about development in our country, the new type of desulfurization gypsum block and wall are introduced in detail, analyzes the main raw materials of desulfurization gypsum block, and the system, the author introduces the characteristics of this kind of block; As a new material research, in this paper, the desulfurization gypsum block done in-depth research in terms of technical performance.(2) In-depth study of the new type of desulfurization gypsum block production technology and construction technology, the production and construction in the process of each step in detail study and explanation, and in view of the construction process of new type of gypsum block wall equipped with hidden embedded and reserved hole construction, model steel formwork support system construction and the wall of moistureproof waterproof construction such as these, the research of the system is the key link to and gives the corresponding solution measures;(3) As a new material research,the performance of desulfurization gypsum block done in-depth research.In order to kNow whether this new wall material meet the requirement of green energy-saving building or not, the author do research of heat preservation and heat insulation performance,sound insulation performance and fireproof performance of the new material wall;Through the desulfurization gypsum block wall hanging test and impact test, analysis and research the mechanical properties of this kind of material as building partition wall;Through analyzing the new desulfurization gypsum block wall cost comparison, analysis its economic performance, to understand the economic rationality of this kind of new materials;(4)For found that the wall of the deficiencies and to explore the market promotion and the application prospect of new wall, based on the established with "performance", "technology", "economy" and "environment" as the evaluation index system of evaluation target, on the basis of fuzzy matter-element analysis theory, established a new type of gypsum block wall, a comprehensive evaluation model and using the analytic hierarchy process(ahp), expert scoring method to determine the weight value of each index in the assessment index system of size;(5) The application of cast-in-place light gypsum wall in one experimental building of a university in Xi’an is studied as the case analysis. Such walls are evaluated comprehensively and results are analyzed combing with the questionnaire from different participation of experts, at the same time, the validity of the model is effectively verified.Through the technical performance indicators of gas desulfurization gypsum block test analysis, research, technical performance index of this kind of new desulfurization gypsum block are strict with the national performance index requirements of gypsum block; From the new desulfurization gypsum block wall heat preservation and heat insulation, sound insulation, fire protection, etc, shows that the wall conform to the state of green energy-saving materials requirements; Based on the research of the production and construction technology for the market application provides reference standards; The comprehensive evaluation results show that the new desulfurization gypsum block has a certain development prospects and market application value.