for Additive Manufacturing 2 Introduction 3 Motivation 4 - PowerPoint PPT Presentation

1 Enhancing Concrete Formulations for Additive Manufacturing

2 Introduction

3 Motivation

4 Project Progression

5 Performance Goals

6 Experimental Method

7 Technical Approach σ σ ε σ ε

8 Experimental Approach

9 Design of Experiments ● ● o o ●

14 Prototype Fabrication ● ● ●

15 Prototype Assembly ● ● ●

10 Facilities ● ● ● ●

16 Prototype Testing ● ● Zhou et al. ● ●

11 ANSYS Fluent Simulation ● o  o o

12 ANSYS Fluent Simulation (cont.) ● Discrete Phase Model (DPM) o Allows for multiple fluid and particulate phases o Fluid phase (i.e. the cement) is modeled as a Newtonian fluid o Aggregate (sand) and entrained air bubbles both modeled as inert particle injections Sand - 500 μ m diameter  Air bubbles - 1mm diameter 

13 Results

19 ANSYS Fluent Simulation ● o o o Time (1/10 seconds)

17 Prototype Results Fiber Aggregate Results Sand Aggregate Results

18 Prototype Results (cont.) Different Mixing Times

20 Timeline

21 Budget

22 Scale-Up Cost Analysis ● ● o o o o

23 Current 3D Concrete Printers ● ● ●

24 Future Work ● o    ● o o o

25 Questions?

26 References