Damage constitutive models and damage evolution of cemented tailings and waste-rock backfill under impact loading

Construction and Building Materials, Год журнала: 2025, Номер 460, С. 139838 - 139838

Опубликована: Янв. 1, 2025

Язык: Английский

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Preparation of high-performance and environmentally friendly superfine tailings cemented paste backfill using cellulose nanofibers

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 106901 - 106901

Опубликована: Фев. 1, 2025

Язык: Английский

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Adding silica fume and calcium carbide residue to enhance the performance of β-hemihydrate phosphogypsum for backfill mining

Construction and Building Materials, Год журнала: 2025, Номер 467, С. 140420 - 140420

Опубликована: Фев. 13, 2025

Язык: Английский

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Energy evolution and damage constitutive model for deep marble under triaxial compression

Frontiers in Earth Science, Год журнала: 2025, Номер 13

Опубликована: Апрель 30, 2025

Introduction High ground stress in deep mining operations results rocks exhibiting mechanical properties that differ from those at shallow depths. This study conducted conventional triaxial compression (CTC) tests to elucidate themechanical behaviors of marble under CTC conditions. Methods Initially, it analyzed energy evolution conditions and developed a damage variable ( D ) expression. Subsequently, we examined impacts confining pressure σ 3 on dissipated W d Poisson’s ratio μ′ proposed an expression for dissipation rate U ). Finally, based the first law thermodynamics, established differential equation balance facilitated development constitutive model (DCM) effectively couples internal within rock. Results The indicated that: (1) maximum increased with increasing , experienced stages stability, slow growth, steady slowdown. (2) At constant loading level. However, as rock intensified residual stage, growth slowed subsequently stabilized. (3) captures nonlinear characteristics stress-strain (SS) curves during elastic, plastic yield, instability failure, stages. Discussion research offers theoretical insights stability analysis activities.

Язык: Английский

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Functionalizing magnesium slag in alkali-activated cementitious material for high-efficiency degradation of formaldehyde

Construction and Building Materials, Год журнала: 2025, Номер 484, С. 141758 - 141758

Опубликована: Май 20, 2025

Язык: Английский

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Influence of mechanical grinding on particle group characteristics and cementation activity of magnesium slag from Xinjiang Tengxiang

Construction and Building Materials, Год журнала: 2025, Номер 487, С. 142081 - 142081

Опубликована: Июнь 3, 2025

Язык: Английский

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