The Study Of The Self- Insulation Block With Green Concrete

Along with the progress of the society and the development of economy, people’s demand for energy is increasing. At the same time, the environmental degradation is becoming more and more severe, and what’s worse, resources shortage is increasing with the industrial development. It is becoming a focus research on the energy conservation and emission reduction in the whole world. In the field of architecture and engineering, the energy conservation is the most direct and effective way. So that, making good use of industrial waste can not only decrease the environmental pollution, but also reduce resources shortage, also bring social benefits and economic benefits. This research is to combine the self-insulation hollow block with the green concrete; through adding ordinary mineral powder, superfine mineral powder and aluminate cement, prepare the green concrete; then design the self-insulation hollow block. Which can achieve the purpose of the environmental protection and energy saving, reduce the resources consumption, reduce exhaust emissions, reduce the pollution of the global environment.Through adding ordinary mineral powder, superfine mineral powder and aluminate cement, we get the best mixture ratio for green concrete:the addition of the ordinary mineral powder is 40%, the superfine mineral powder is 10%, the aluminate cement is 5%, the admixture is 7‰, and the portland cement is about 45%, the final ratio of the water and cement is 0.45. In this paper, the self-insulation material with green concrete that we studied is a powdery material by adding short-fiber, polystyrene particles (EPS) and polyvinyl alcohol into the green concrete material. Then adding water to form a thick even paste, prepare the insulation block; after drying and solidifying, it becomes the building block of thermal insulation, possessing some advantages, such as:thermal insulation, certain cracking resistance, low bulk density. Then it will lead environmental protection, energy conservation and the characteristics of simple construction, with the blocks being used to the architecture engineering. That will improve the efficiency of the energy conservation, the usage of resources, the efficiency of building construction.Taking the advantage of the good thermal performance of polystyrene particles, we reduce the coefficient of thermal conductivity of composite material. Although the addition of ordinary mineral powder, superfine mineral powder and aluminate cement has small influence on the coefficient of thermal conductivity of the composite material, it can improve some mechanical properties, solidifiability of the composite material. With the increase of the superfine mineral, compressive strength and flexural strength of block increase. The thermal performance of the optimized formulation of self-insulation block of green concrete we studied is obviously superior to the relevant state indicators. Moreover, bulk density of the self-insulation block with green concrete is small, so it is helpful to reduce self-weight of buildings. The self-insulation block with green concrete made through the experiment, polystyrene particles (1:75), polypropylene fiber 4g, has compressive strength (28d) 1.76MPa, flexural strength (28d) 1.05MPa, coefficient of thermal conductivity 0.1371 W/(m.K).