The Localization Research Of RASTRA

After the mankind entered the 21 st century, the global energy crisis is becoming increasingly serious with the continuous development of global economy. And the energy consumption also poses a severe ecological imbalance, such as air pollution, water pollution, solid waste pollution problem, which brought negative influence to the modern people’s life. So there is an urgent need to a kind of system of building energy efficiency, which is characterized by the energy-saving and land-saving, water saving, no "three wastes" emissions. And the Cement Polystyrene Lattice Shell Mould Concrete Wall System fully meet people’s expectation, which has been very mature in foreign countries. However, after the system was introduced into China in the early 20 th century, the development is very slow, almost stagnant.On the one hand,it is the deepening of energy crisis, people is more thirst for the energy-saving green building system,on the other hand,the development of the Cement Polystyrene Lattice Shell Mould Concrete Wall System is blocked. In the face of the pair of contradictory relations, the system localization research is particularly important.In order to make the system adapt to the demand of the construction industry in our country by continuously improving it, this article’s main work and the main achievements are as follows:1. The Cement Polystyrene Lattice Shell Mould Concrete Wall System is introduced, mainly including the component type, size, wall internal structure, external structure, production process, characteristics and scope of use.2. In order to find the factors hindering the development of the system, there is an analysis of the development and research status, which is mainly reflected in two aspects:①The light aggregate material(polystyrene particle), is the only lightweight aggregate material of the system, the price of which is rising with the imbalance between the supply and demand, causing price of the component to rise. So it is losing the advantage of price.②The system cannot Enter the field of high buildings, so it loses the main market of construction activity in China.3. The existing light aggregate in our country is compared on the heat insulation performance, physical characteristics, economy and ecosystem, products, to gradually narrowing the scope of light aggregate replacement. The light aggregate replacement is expanded perlite, expanded vermiculite, vitrified beads, pumice, diatomite lightweight aggregate, lytag, gangue ceramsite.4. The existing light aggregate screened to find out some light aggregate,which is characterized by small coefficient of thermal conductivity and similar performance to polystyrene particles. There are three kinds of materials found by the calculation of heat transfer coefficient, which are the vitrified beads, expanded perlite, expanded vermiculite. It realizes the diversity of the system of raw materials, which is beneficial to reduce cost, improve the competitiveness.