固废3D打印混凝土性能及经济效益分析研究

Research on the Performance and Economic Benefit Analysis of Solid Waste 3D Printing Concrete

将固废材料与3D打印技术结合,实现固废混凝土的循环利用。首先,分析原材料性能特性,探究固废再生砂生产工艺。其次,进行相关配合比设计,以黏度、初凝时间、抗压强度等性能来表征固废3D打印混凝土的建造性能,研究水胶比、再生砂取代率及纤维用量对其力学性能的影响规律。结果表明:最佳配合比为水胶比0.37、再生砂含量100%、纤维用量0.5%。最终通过分析生产过程中的碳排放量和经济成本,对比与普通浇筑工艺的差异,提出后续3D打印混凝土的研究问题,为交通行业循环经济的可行性奠定基础。

In this article,the solid waste materials is combined with 3D printing technology to achieve the recycling of solid waste concrete.Firstly,it analyzes the performance characteristics of raw materials and explore the production process of solid waste recycled sand.Secondly,relevant mix design is carried out to characterize the construction performance based on properties such as viscosity,initial setting time,and compressive strength.The influence of water cement ratio,recycled sand replacement rate,and fiber dosage on its mechanical properties are studied.The results show that the water cement ratio is 0.37,the recycled sand content is 100%,and the fiber dosage is 0.5%.Finally,by analyzing the carbon emissions and economic costs during the production process,comparing the differences with ordinary pouring processes,research questions on subsequent 3D printed concrete are proposed,laying the foundation for the feasibility of circular economy in the transportation industry.