Evaluation Analysis Of Foam Conceretee Wall Based On Life Cycle

As the green building develops,the assessment of the life cycle of a building has been an important measure of building energy saving and emission reduction,also a reference of selecting building program.Using the basic method of life cycle evaluation to analysis the building energy-saving wall and get on a detailed study and analysis of foam concrete wall on its production materials,production process and construction process.Using eBalance,life-cycle analysis software,to calculate and get on a sensitivity analysis of foam concrete wall.The results show that portland cement is a major contributor to acidification,carbon emissions,eutrophication,global warming potential and nitrogen oxides;cement board is a main materials causing COD,NH3-N indicators;although the use of thin-walled steel coil in production is very small,it has a significant impact on indicators acidification,chemical oxygen demand,eutrophication,ammonia nitrogen,nitrogen oxides.Selecting external insulation wall made by rock wool board?polystyrene board?polyurethane insulation board ? foamed concrete insulation board and cast-in-place foamed concrete as its heat preservation material to compare the energy consumption of various types of walls and environmental impact.In the samet case of wall heat transfer coefficient,to determine the resource energy consumption from the raw material to the wall use process according to the relevant specification construction requirements and the construction project consumption quota.Through data acquisition and software analysis to infer the norm of life cycle of the five kind of walls on carbon emissions,comprehensive energy consumption,global warming potential,acidification effect,chemical oxygen demand.Finally,comprehensive energy-saving emission reductiontargets as the basis for comparison.The results show that the size relationship of this five kind of walls' impact on the environment from high to low is that yanmian plate autoclaved aerated concrete block wall polyurethane insulation board wall polystyrene board wall foam concrete wall insulation board and cast-in-place foam concrete wall.