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Lookup NU author(s): Dr Colin Davie,
Dr Enrico Masoero
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© ASCE. In the light of the developing use of cementitious materials in safety critical, high temperature applications associated with energy industries (nuclear, oil and gas) this work looks to the nano-scale to consider the origins of macro-scale phenomena. It enables a first comparison of nano-scale results with macro-scale observations, toward the inclusion of physico-chemico-mechancial processes in models at larger scales and a move away from phenomenological models. Assuming the development of nano-scale porosity to be the principal effect of temperature at the nano-scale, comparisons are here developed between nano-scale measurements, simulations and macro-scale experimental results. The results suggest that the effect of temperature on the nano/micro mechanical properties of cementitious materials might be responsible for a significant part of the experimentally observed trends at the macro-scale, although more work is required to understand scaling of fracturing. It is concluded that modifying the nano-scale material response to temperature gradients could eventually impact the engineering performance of structures at elevated temperatures.
Author(s): Davie CT, Masoero E
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP 10)
Year of Conference: 2015
Online publication date: 21/09/2015
Acceptance date: 01/01/1900
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