Use of 3D sand printing to study the behaviour of porous geomaterials

使用 3D 砂打印研究多孔土工材料的行为

• 批准号: RTI-2017-00460
• 负责人: Grasselli, Giovanni
• 金额: $ 10.93万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616681
• 关键词: Use; 3D; sand; printing; study

The thermo-hydro-mechanical-chemical (THMC) behaviour of porous materials is dominated by processes that occur at the pore and grain scales. This proposal requests funding for purchasing a 3D sand printer capable of printing identical replicas of porous and fractured samples which will allow to produce almost identical replicas, thus, to separate the influence of the sample pore structure when studying its response under controlled THMC conditions. The requested equipment will specifically support three research programs that all involve the study of pore-scale phenomena in various porous geomaterials: 1) Study of how rock microstructure influences rock viscoelastic properties. The requested equipment will allow to print identical sandstone samples with controlled microstructures (fractures, voids etc…). Physical properties of these samples, containing fractures at different filling thicknesses, will be measured incidentally to µCT scanning. Using the expected results as a guide, time-variant images will be quantitatively related to fracture aperture, saturation, and density, thereby, providing us with a more comprehensive understanding of how a reservoir will change/evolve during stimulation and productions. 2) Study on the effect of fracture and pore structures on contaminant movement and remediation. The ability to design and print porous rocks will allow to better understand the role of pores on retention of contaminants and their impact on remediation processes. 3) Produce and test novel design of the new generation fuel cells and electrolysers for clean energy production. The possibility to fabricate internationally unique porous electrodes with a variety of design features, such as graded materials, contact angles, and porosity will allow to move from concepts to prototypes in a timely manner.

多孔材料的热-水-力-化学(THMC)行为是由发生在孔隙和颗粒尺度上的过程决定的。该提案要求为购买3D沙子打印机提供资金 能够打印多孔和破裂样品的相同复制品，这将允许产生几乎相同的复制品，从而在研究样品在受控THMC条件下的响应时分离样品孔结构的影响。 所要求的设备将专门支持三个研究项目， 所有这些都涉及到各种孔隙中的孔隙尺度现象的研究。 岩土材料： 1)研究摇滚乐 微结构影响岩石的粘弹性性质。所请求的 设备将允许打印相同的砂岩样本 受控微结构(裂缝、空洞等…)。物理性质 在这些样本中，含有不同填充厚度的裂缝， 将在µCT扫描时附带测量。以预期结果为指导， 时变图像将与裂缝孔径定量相关， 饱和度和密度，从而为我们提供了更全面的 了解油层在吞吐和开采过程中如何变化/演化。 2)裂隙和孔隙结构对污染物运移和修复的影响研究。设计和打印多孔岩石的能力将使人们能够更好地了解孔隙在污染物保留方面的作用及其对修复过程的影响。 3)生产和试验用于清洁能源生产的新一代燃料电池和电解槽的新设计。制造具有多种设计特征的国际独一无二的多孔电极的可能性，如分级材料、接触角和孔隙率，将允许及时从概念转移到原型。