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Christine Ann Spencer

Research student, School of Engineering

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Doctoral researcher in Biogeotechnical Engineering, currently based at Arizona State University as a Visiting Researcher. 

My current research concerns the long term supply of nutrients for the self-healing microbially induced calcium carbonate precipitation process (SH-MICP), applied to soil structures.  

I am a graduate in MEng Civil Engineering, from the University of Bristol. As a student at the University of Bristol I completed research in the area of experimental soil mechanics. I developed miniature penetrometer devices and testing methods to estimate the undrained shear strength of weak clay samples. 

Prior to and during my MEng studies I worked for Arup, based in their pavements team in Nottingham. 

Research interests

Research Projects:

Current:

07/2017 - present: Self-healing Geomaterials, Cardiff University

Funding obtained:

Grant from COST CA 15202 to attend 'SARCOS' PhD Meeting Novi Sad Serbia 07-09 Mar 2019

SfAM conference grant for attendance at FEMS2019 07-11 Jul 2019

Completed:

06/2014 - 07/2015: Bristol Inspire, Centre For Market and Public Organisation, University of Bristol

In partnership with Teach First, Bristol Inspire aimed to raise attainment, aspirations and University applications of local students from disadvantaged backgrounds. A range of interventions were delivered in schools and FE colleges within Bristol city and surrounding areas. Project outcomes will feed into major research on how the aspirations and exam performance of disadvantaged school students can be improved through increasing the information and guidance available to young people.

As part of the project team, I managed the day to day activities of the project and coordinated the intervations delivered in the participating schools and FE colleges. Research outcomes were published in the journal of Widening Participation and Lifelong Learning, 01.11.2018. https://www.ingentaconnect.com/content/openu/jwpll/2018/00000020/00000004/art00004

2012/13: Laboratory measurement of strength of weak clay samples, University of Bristol

The use of Triaxial tests to directly measure the undrained shear strength of very soft clays is impractical due to resulting sample disturbance and provides inadequate resolution. Indirect testing methods including the fall cone, T-bar and cone penetrometer test (CPT) are often preferable. However, analysis of these methods is dependent on empirically derived correlations. Variable bearing capacity factors derived from large scale tests or from in-situ testing introduce uncertainty concerning results of penetrometer tests. A robust, simple and reliable method of determining the undrained shear strength of very soft clays is required. Miniature T-bar and cone penetrometers were developed for this research. Experiments were conducted to measure the resistance to penetration in Speswhite Kaolin and Bentonite clay samples, with strengths ranging from approximately 1kPa to 20kPa. The effects of moisture content and rate of penetration were investigated. Results from penetrometer tests and standard fall cone tests were compared to determine suitable bearing capacity factors, to enable estimation of the strength of samples tested in relation to moisture content.

The above research will be presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering
Reykjavik, Iceland (ECSMGE 2019) 1 - 6 September 2019

Teaching

2019: Teacher for 'Laboratory Testing of Soils', as part of the MSc in Applied Environmental Geology, Cardiff University

2018: Demonstrator for 'Laboratory Testing of Soils' and Teaching Assistant for 'Engineering Geology 3', Cardiff University School of Earth and Ocean Sciences. 

Thesis

Self-healing geomaterials

Funding source

Cardiff University

2019