Rock fracture under upper crustal conditions is driven not only by applied stresses, but also
by time-dependent, chemically activated subcritical cracking processes. These subcritical …

Foam concrete (FC) has the potential of being an alternative to ordinary concrete, as it
reduces dead loads on the structure and foundation, contributes to energy conservation, and …

We performed mechanical tests on several, mainly European black shales with different
mineralogical composition, porosity and maturity. The uniaxial and triaxial compressive …

This paper presents the results of laboratory tests on the time-dependent behaviour of three
rocks characterized by a high proportion of clay particles. The viscosity of these sedimentary …

Within the framework of feasibility studies for a reversible, deep geological repository of high-
and intermediate-level long-lived radioactive waste (HLW, IL-LLW), the French National …

Abstract Since 2000, the French National Radioactive Waste Management Agency (ANDRA)
has been constructing an Underground Research Laboratory (URL) at Bure (east of the …

Rock engineering especially deep rock engineering undergoing long-term effects of external
loading and gravity all or most may gradually damage deformation or creep deformation …

In many major rock projects, services have spanned decades or even hundreds of years. For
engineering design, it is necessary not only to ensure the safety of personnel during …

The economic production of gas and oil from shales requires repeated hydraulic fracturing
operations to stimulate these tight reservoir rocks. Besides simple depletion, the often …

We carried out a series of long-term creep experiments on clay-and carbonate-rich shale
samples from unconventional gas reservoirs to investigate creep over both relatively short …