hoop tensile stress test

Hoop Tensile Test

April 1, 2022

Project Title: Hoop Tensile Test Industry Part ner: PSI Lab CIEST Personnel Participants : John Hindman Year: 2022 Project Summary: The CIEST Laboratory successfully completed testing pipe liner samples for “apparent hoop tensile strength” as described in ASTM D2290. The method uses a split disk to apply tensile forces to...


Rapid Encapsulation of Pipelines Avoiding Intensive Replacement (REPAIR)

March 9, 2022

Project Title: Testing and Analysis of Pipeline Encapsulation Technologies Funding Agency: DOE/ARPA-E: Rapid Encapsulation of Pipelines Avoiding Intensive Replacement (REPAIR) Lead: University of Colorado Boulder Partners: Gas Technology Institute, Cornell University, University of Southern Queensland Industry Partners: Sanexen Environmental Services Inc. CIEST Personnel : Patrick Dixon, William Flood, John Hindman,...

Fully seated gasket

Axial Capacity of Reinforced Gasketed Joints

Aug. 30, 2020

Full Project Title: Axial Capacity of C900 PVC Pipe with Reinforced Gasketed Joints Year: 2019-20 Industry Partner: Denver Water CIEST Personnel : Jessica Ramos, John Hindman, Brice Lucero, David Ballcells, Hayley Parnell, and Porter Hawkins Primary Investigator : Prof. Brad Wham Summary: The objective of this study was to impose...

Specimen in compression

Biomimetic Antifreeze Polymers

Aug. 14, 2020

Full Title: Year: 2017-21 Participants: Mohammad Matar, Shane Frazier, Jorge Osio-Norgaard, Anastasia Aday, Nathan Deanda, El Delesky Primary Investigator: Wil Srubar III Summary: In this study the effects of biomimetic antifreeze polymers were investigated for their use as an alternative to traditional air entraining agents in concrete exposed to freeze-thaw...

geo thumbnail

Geopolymer Cements

Aug. 13, 2020

The primary objective of this Extremely Durable Cementitious Materials project is to engineer an ultra-acid-resistant low-calcium alkali-activated (geopolymer) cement paste specifically for wastewater infrastructure applications.

biobrick arch

Engineered Living Materials (BioBricks)

Aug. 13, 2020

The objective of this project is to engineer living materials to serve both biological and structural functions.


Evaluation of Hazard-Resistant Pipelines

Sept. 27, 2019

The first in a series of testing programs at CU Boulder CIEST investigating performance of critical lifeline systems under extreme loading conditions.


Seismic Evaluation of HSS Column Splices

June 28, 2019

Project included development of a bi-directional loading system to apply simultaneous axial and lateral loading to 6 in. diameter columns and splice connections. Nearly 60 full-scale tests were conducted to support evaluation of a new structural building system for seismic applications. Accredited testing performed to ISO/IEC 17025 standard following protocols provided by FEMA 461.

Example of a wire mesh sample

Wire Mesh Tension Testing

June 13, 2019

In summer 2019, former masters student David Kyle Anderson conducted 28 tension tests on 5 different types of wire mesh used for soil stabilization at CIEST.


Liquefaction of Silty Sands

Feb. 18, 2019

Utilizing experience with silty-sand gained during her PhD, April intends to focus on how to use silty-sands in the centrifuge to produce accountable results to predict the influence of this material on liquefaction; hopefully leading to incorporation into performance-based design.