Increased cement paste permeability via novel controlled fatigue technique

Goldman, J., Yin, C-Y and Chen, X. (2013) Increased cement paste permeability via novel controlled fatigue technique. In: 4th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2013, 10 - 12 July, Gold Coast, Australia p. 879321.

Abstract

In this study, a novel approach using low-load cyclic compression fatigue technique to gradually propagate cracks in a brittle porous material and enhance fluid flow in a controlled direction was investigated. The technical feasibility of using this technique to increase permeability was evaluated by conducting cyclic fatigue, hydraulic conductivity, and crack formation tests. It was shown that this technique could be used to gradually propagate crack(s) in a controlled direction, and increase permeability in a porous and brittle material. The method improves the conventional counterpart of hydraulic fracture by inducing controlled damage formations, without suddenly compromising the structural integrity of the material, thereby manipulating permeability. The highest permeability recorded is approximately 4.25 × 10-9 m/s for 1,000 fatigue cycles. The results have implications for enhancing the capabilities of liquid CO2 sequestration in deep sea sediments.

Item Type:	Conference Paper
Murdoch Affiliation(s):	School of Veterinary and Life Sciences
Publisher:	The International Society for Optical Engineering
Copyright:	© 2013 SPIE
URI:	http://researchrepository.murdoch.edu.au/id/eprint/18178

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