The Optimization Strategies Study Of Architectural Design Based On The Carbon Sink Of Concrete

Nowadays the issue of global environment deterioration has been in the limelight.The research of carbon source and carbon sink is one of the core issues of global carbon cycle.In recently 20 years,the known carbon source is higher than carbon sink.The imbalance of them causes the imbalance of atmosphere carbon budget.So there must be unrevealed carbon sink in the atmosphere and the unrevealed carbon sink is called missing carbon sink.The main carbonized elements in cement are Ca(OH)2,CSH and CAH.Cement can absorb CO2 and form CaCO3 by the study of the Portland Cement Association.Cement is used in the construction as the form of concrete,so the concrete in the constructions is with the ability of carbon sink.It takes energy and makes carbon emission in the process of cement material production,building operations,using and demolition.With the development of cement new technology,cement carbon emission has decreased and the pollution of waste concrete are also solved to some extent.Concrete can be the ability of carbon sink,but change the city into the concrete forest to gain more carbon sequestration is not right.The carbon emission is higher than the carbon sink of construction,in the condition,how to gain more carbon sequestration so that can remedy carbon emission of constructions is the emphasis of the paper.How many carbon sequestration of constructions?How to uncover and quantify these types of carbon sink?How to optimization design to gain more carbon sequestration of constructions?What is the meaning of carbon sink in city?The paper studied with these questions and the concrete research contents are as follows:Firstly,analyzing the carbon sink principle and carbon sink value of concrete.The relative concepts of carbon sink of concrete are summarized.Combining literature analysis method and data statistics to analyze the carbon sink principle of concrete,lime mortar and sodium silicate.Comparing the carbon sequestration and carbon emission of concrete,steel and wood to put forward the importance and feasibility of concrete carbon sink value as building materials.Secondly,analyzing the carbon sink factors of concrete and establishing the calculation method.With the analysis of scientific basis and progress mode of concrete carbon sink,research the carbon sink factors of concrete and determine the carbonation rate parameter of different conditions.The concrete carbon sink calculation can be divided into four phases(construction phase,using phase,demolition phase and secondary using phase).Establishing accounting method of concrete carbon sink and accounting at different phases of concrete carbon sequestration.Collecting 190 constructions in Shenyang as the statistical samples and calculating the carbon sequestration to summarize the carbon sink coefficients of different types of constructions.Thirdly,using the optimize the design of concrete constructions to gain more carbon sequestration.Combining carbon sink influence factors,carbon sink laws and corresponding theoretical knowledge to analyze synthetically.Optimizing design strategies from the elevation design(facing materials using and facing forms),the application between concrete and other materials,the optimization of structure,the detail design of concrete constructions and the creation landscape of lighting.New forms of concrete construction will be taken shape.Fourthly,putting forward design optimization strategies of concrete construction and evaluating it.Taking residential for example,using the design strategies to optimize and evaluate it.Combing the cost to analyzing the feasibility of carbon sequestration optimized results and before.Finally,the application of the carbon sink laws in city.Taking Puhe New City for example to analyze the construction space distribution.Combing the carbon sink coefficients of constructions and the carbon sink coefficients of terrestrial ecosystem summarized by Jingyun Fang to reach the carbon sink space distribution of Puhe New City.The project is aim at that concrete can absorb CO2 at the same time of carbon emission to distinct the mission carbon.Using optimization design of constructions to gain more carbon sequestration so that can remedy carbon emission of constructions is feasible.The carbon sink spatial distribution of whole city can be formed with carbon sink of constructions and terrestrial ecosystem.It can provide data support of carbon sink spatial distribution to the urban planning.In conclusion,it is the ecological value of concrete material.