Determining the yield stress of a Biopolymer-bound Soil Composite for extrusion-based 3D printing applications

被引：10

作者：

Biggerstaff, Adrian ^{[1
]}

Fuller, Gerald ^{[2
]}

Lepech, Michael ^{[1
]}

Loftus, David ^{[3
]}

机构：

[1] Stanford Univ, Dept Civil & Environm Engn, 473 Via Ortega, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Chem Engn, 443 Via Ortega, Stanford, CA 94305 USA

[3] NASA Ames Res Ctr, Space Biosci Res Div, Mountain View, CA 94035 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 305卷

基金：

美国国家科学基金会;

关键词：

3D Printing; Yield stress; Biopolymer-bound Soil Composite (BSC); Rheology; CONCRETE; BEHAVIOR; SUSPENSIONS; THIXOTROPY; PARTICLES;

D O I：

10.1016/j.conbuildmat.2021.124730

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Biopolymer-bound Soil Composite (BSC) is a novel class of construction materials with potential use in extraterrestrial infrastructure development and more sustainable construction on Earth. Little is known about the rheological properties of this new material and its suitability for extrusion-based 3D printing (E3DP). This paper presents methods for testing BSC yield stress and proposes hydrodynamic and frictional yield stress models for predicting the static and dynamic yield stress of BSC mixtures. Using experimental results, a soil volume fraction range for BSC is identified that may be suitable for E3DP based on extrudability and shape stability requirements.

引用

页数：8

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