Changes in rock structure with cyclic freezing and thawing

Вайсберг, Л. А.; Каменева, Е. Е.

doi:10.17580/or.2015.02.06

Cited by 8 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been found that in cyclic freezing and thawing of rocks, the pore space structure changes not only in the surface layer but also in the rock volume (Fig. 1), which made it possible to formulate a new approach to assessing the durability of natural stone [15].…”

Section: Application Of X-ray Tomography In Mineral Researchmentioning

confidence: 99%

X-ray computed microtomography as the basis for mineral processing improvement : review

Вайсберг¹,

Каменева²

2020

Self Cite

View full text Add to dashboard Cite

5. Now some manganese open pits of the Pokrovsky MPE are under cleaning-up of ore reserves. In this respect researches of a reengineering of a technological scheme of mining operations under cleaning-up of pit area are needed. In this aspect, not enough attention is still being paid to the solution of issues related to the technology for cleaning-up of deposit and the closure of open pits, as well as the production costs for the improvement of their surface. References 1.

show abstract

Section: Application Of X-ray Tomography In Mineral Researchmentioning

confidence: 99%

X-ray computed microtomography as the basis for mineral processing improvement : review

Вайсберг¹,

Каменева²

2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…They require a higher power consumption and, consequently, higher financial expenditure. The relationship between the mineralogical and technological characteristics of ores with the need for mechanoactivation and selective comminution is shown in [9][10][11].…”

Section: In Russia Oxide-silicate Supergene Nickel Deposits Require Amentioning

confidence: 99%

Supergene oxide-silicate nickel deposits: mineral-geochemical composition and peculiarities of processing

Talovina¹,

Alexandrova²,

Heide³

et al. 2017

View full text Add to dashboard Cite

“…Soils undergo various transformations under the influence of processes associated with freezing and thawing water phase transitions, resulting in changes in their properties [1][2][3][4][5][6]. The combination of these processes is referred to as cryogenesis [7].…”

Section: Introductionmentioning

confidence: 99%

Carbonate Soil Cryogenesis in South Yakutia (Russia)

et al. 2021

View full text Add to dashboard Cite

The present study investigates changes occurring in the material composition and properties of the South Yakutian carbonate soils during cryogenesis. The nature of the transformations of certain limestone varieties composing the surfaces of rock massifs was determined using scanning electron microscopy, 3D X-ray tomography, as well as lithological–mineralogical and optical–petrographic studies, over a 10-year period. The areas in carbonate rock massifs with increased clay content, pyritisation, dolomitisation, and baritisation, as well as zones of calcite and dolomite junction, were found to be least resistant to the effects of processes associated with water phase transitions, i.e., freezing and thawing. The mineral proportion of limestone on the surface of soil massifs chemically processed over a 10-year period reached 5–7% of the volume of the weathered rocks. In the process of transformation, not only the composition of the rocks changed, but also the nature of the structural bonds that significantly influence their mechanical strength properties. The number of cracks for weathered soil samples increased by 9–16%; their opening increased by 13–18%. For rocks initially having uniaxial compression strength in the range of 33–46 MPa, this strength was reduced by 19–27%. Laboratory experiments on 1000-fold cyclic freezing and thawing of carbonate rock samples (which corresponds to an 8–10-year period of weathering on the surface of a mountain outcrop under the natural conditions of South Yakutia) demonstrate the similarity of these changes with those observed in samples taken from the sides of open pits 10 years ago. In general, soils are influenced by a wide range of environmental factors under natural conditions. The significant influence of alternating temperatures on the changes in the composition and structure of limestones in South Yakutia is characterised in detail.

show abstract

Changes in rock structure with cyclic freezing and thawing

Cited by 8 publications

References 0 publications

X-ray computed microtomography as the basis for mineral processing improvement : review

X-ray computed microtomography as the basis for mineral processing improvement : review

Supergene oxide-silicate nickel deposits: mineral-geochemical composition and peculiarities of processing

Carbonate Soil Cryogenesis in South Yakutia (Russia)

Contact Info

Product

Resources

About