Research on Current Situation of Waste Concrete Disposal Enterprises in Shanghai
Current situation,existing problems,and significance of waste concrete disposal enterprises in Shanghai were studied using questionnaire surveys and field investigations.Research has found that:(1)All 25 waste concrete disposal enterprises in Shanghai are private enterprises,mainly distributed in Pudong New Area,Baoshan District,Minhang District,and Qingpu District of Shanghai;(2)In 2023,Shanghai has obtained approximately 6.344 million tons of recycled products from waste concrete.Recycled coarse aggregates with a particle size greater than 5 mm account for 61.3%,while the production of recycled products in Pudong New Area accounts for 51.7%of the city's total;(3)The disposal process includes preliminary crushing,secondary crushing and screening.Some enterprises have employed additional processes such as manual sorting,iron removal,water flotation,and air separation to improve the quality of recycled products;(4)The economic and ecological benefits of recycling waste concrete are significant,and worthy of adhering to long-term development.
Shanghai citywaste concreterecycled aggregatedisposal status
万方数据
维普
