Micromechanically inspired investigation of cemented granular materials: part I—from X-ray micro tomography to measurable model variables

Hydraulic failure of granular materials with artificial cementation

“…Cementation in a granular soil usually takes place as the partial filling of the pore space between grains by a solid binder that connects the grains together and generally stiffens the material. Its origin can be natural, and it is encountered in a large number of geological formations, often in steep cliffs, involving several types of cemented soils, such as breccias, carbonate sands, or sandstones [1,2]. Precipitation and deposition of mineral constituents, such as carbonates, is the main origin of the common natural soil cementation but some biological binders also exist, due to organic (bacterial, microbial) sources [3,4].…”

“…Precipitation and deposition of mineral constituents, such as carbonates, is the main origin of the common natural soil cementation but some biological binders also exist, due to organic (bacterial, microbial) sources [3,4]. Reproducing artificially these natural processes is of great practical interest, and has long been used in the construction industry with various types of cement [2]. This cementation process can also be used to reinforce existing soils [3][4][5], and is motivating a growing number of studies in view of the expected benefits in terms of sustainable development or reduced environmental and energy impact [6,7].…”