| The construction energy conservation is a question which the architecture industry sustainable development takes day by day,had saves the resources,reduced the energy consumption,the reduced pollution ecologically-safe building already becomes the construction development the way that must be taken.Develops the new construction energy conservation wall material,is the current development energy conservation construction urgent need.National Ministry of Construction made clear that at present,China’s energy resource supply and the contradiction between economic and social development is very prominent,and building energy consumption to reach 30%of total energy consumption,"China’s existing urban and rural housing construction total of about 33 billion m~2,while the energy-saving Residential less than 2%,so that compared with developed countries,energy consumption of 2～3 times higher than that,"In some respects,constrained the overall economic adjustment and development.Building energy-saving resources for the promotion of energy conservation and rational utilization of resources to ease China’s energy supply and the contradiction between economic and social development to accelerate the development of recycling economy and realize sustainable economic and social development,plays an important role is to protect national energy security,protect the environment,improve the quality of life of the people,and implement the scientific concept of development of an important initiative.Therefore the new energy-saving building wall materials become more and more people’s attention.Scoria deposits in Jilin Province ranked highest in the nation.Scoria reserves Huinan only inside reserves have 800 million cubic meters,of which light scoria(400)accounted for 30 million cubic meters.Scoria has a porous,soft,small features such as thermal conductivity,the use of scoria in China to produce concrete wall materials ① scoria lightweight aggregate concrete wall panels for;② scoria lightweight concrete wall panels;③ scoria small concrete block the use of lightweight scoria concrete development of new wall materials,light,thermal insulation,high strength and other characteristics,reduce environmental pollution,and to meet building energy efficiency and reduce the structural weight requirements.The topics that affect the performance of lightweight scoria concrete study on the factors:the amount of scoria scoria a direct impact on the mechanical properties of concrete,the greater the volume,the poorer the mechanical properties;fly ash content in a certain range within hours(≤ 18%),can effectively improve the mechanical properties of concrete,but the content more than 18%of the mechanical properties of concrete will fall;volcanic slag concrete with the insulation properties of volcanic slag content increases and so on.Scoria material set at the same time there is a substantial porosity,so the concrete mix design,not only to meet the strength and workability of the demand,but also by concrete density restrictions.So we have adopted scoria first wetting the surface together with the fly ash blocked pore approach to reduce waste and lower cement density do.In addition,because of volcanic slag aggregate make porous materials prepared by the concrete shrinkage value,and should be mixing in the preparation of admixtures reduce water absorption and phase in the conservation measures to improve the performance of its contraction. |
