Methods
ETAS Load Cell Seal Repair
Tracing a confining-oil leak to an internal load-cell seal, replacing two Viton O-rings, and checking the repair at 20 MPa. An illustrated record of the tools, disassembly and reassembly for future lab maintenance.
Geng (Ben) Niu
Ph.D. Candidate in Civil and Environmental Engineering
Duke University
About Me
I am a Ph.D. candidate in Civil and Environmental Engineering at Duke University, advised by Prof. Laura E. Dalton. My current research focuses on carbon capture, utilization and storage, supported by 4D imaging and material characterization.
Carbon Capture, Utilization and Storage
4D Imaging and Material Characterization
Research
Publication
3D-Printed Lightweight EPS Concrete
A composite aggregate model extends excess paste theory to mixtures containing sand and EPS particles and connects paste-layer thickness with rheology and printability.
Methods
X-Ray Tomography and 4D Imaging
Using non-destructive three-dimensional imaging to resolve internal material structure and follow its evolution during reactive and mechanical processes.
Current research
CCUS in Cementitious Materials
Investigating reactive mineral systems and cement-based materials for durable carbon storage, with emphasis on how evolving internal structure controls transport and mechanical performance.
News
I began my Ph.D. studies in Civil and Environmental Engineering at Duke University.
Recent Writing
An illustrated repair record for a confining-oil leak at the ETAS load-cell cable outlet, with replacement seals, tools and a successful 20 MPa leak check.
A composite aggregate model connects excess paste thickness with the rheology and printability of lightweight EPS concrete.
Computed tomography (CT) is an imaging procedure that uses special X-ray equipment to create detailed pictures, or scans, of areas inside the body.