期刊文献+

粉煤灰/磷渣微粉改性水泥基3D打印材料的制备与工作性研究

Preparation and Working Performance of Fly Ash/Phosphorus Slag Powder Modified Cement-based 3D Printing Materials
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摘要 建筑3D打印技术相对于传统建造技术具有效率高、成本低、污染小、安全性高等优点,但建筑3D打印材料限制了3D打印技术在建筑行业的发展。近年来,水泥基建筑3D打印材料的研究正受到越来越多研究人员的关注和青睐,相对于传统水泥基材料其需要有短的凝结时间,适宜的流动度,良好的可挤出性以及良好的可堆积性能,这样才可打印出完整的打印体。本文设计了不同配合比的粉煤灰(FA)/磷渣微粉(PS)改性水泥基3D打印材料,并对FA/PS改性水泥基3D打印材料的凝结时间、流动度以及可堆积性等进行了研究。研究结果表明:除FA 10-50外,FA改性的水泥基3D打印材料以及SAC掺量为胶凝材料总量的15%时的PS改性的水泥基3D打印材料能满足建筑3D打印对凝结时间的需求;FA 10-40、FA 10-50、FA 15-10、FA 15-30、FA 15-40的流动度在200 mm及以内,具有适宜的流动度,能满足建筑3D打印对流动度的要求,而PS改性的水泥基3D打印材料的流动度均大于200 mm,难以满足建筑3D打印对流动度的要求;FA 15-10、FA 15-40、FA 15-50以及PS 15-30和PS 15-40能打印至50层且变形较小,具有良好的可堆积性能。 Compared with traditional construction technology,building 3D printing technology has the advantages of high efficiency,low cost,low pollution,and high safety.However,building 3D printing materials limit the development of 3D printing technology in the construction industry.In recent years,the research of cement-based 3D printing materials is attracting more and more researchers′attention and favor.Compared with traditional cement-based materials,it needs a short setting time,a suitable fluidity,good extrudability and good stackability,so that a complete print can be finished.In this paper,fly ash(FA)/phosphorus slag powder(PS)modified cement-based 3D printing materials with different mix ratios were designed.And the early working performances of FA/PS modified cement-based 3D printing materials such as setting time,fluidity and stackability were studied.The results show that except for FA 10-50,the FA modified cement-based 3D printing materials and the PS modified cement-based 3D printing materials with SAC content of 15%of the total cementitious material meet the requirements of the setting time of building 3D printing.The fluidity of FA 10-40,FA 10-50,FA 15-10,FA 15-30,FA 15-40 is within 200 mm,which meets the fluidity requirements of architectural 3D printing.However,the PS modified cement-based 3D printing materials have higher fluidity.FA 15-10,FA 15-40,FA 15-50 and PS 15-30 and PS 15-40 can be printed to 50 layers with less distortion,and have good stackability.
作者 王栋民 李小龙 刘泽 WANG Dongmin;LI Xiaolong;LIU Ze(School of Chemical&Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处 《硅酸盐通报》 CAS 北大核心 2020年第8期2372-2378,2392,共8页 Bulletin of the Chinese Ceramic Society
基金 国家重点研发计划(2019YFC1904302)。
关键词 3D打印材料 配合比 凝结时间 流动度 可堆积性 3D printing materials mix ratio setting time fluidity stackability
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