Concrete-face slabs are the primary anti-permeability structures of concrete-face rockfill dam (CFRD), and resistance face slab concrete to permeability is key factor affecting operation safety CFRDs. Herein, influences five fly ash dosages (namely 10%, 20%, 30%, 40% 50%) on property concretes were investigated. Moreover, difference in caused by dosage variations revealed terms pore structure f...

inspecting the behavior of the rockfill materials is of significant importance in analysis of rockfill dams. since the dimensions of grains in such materials are greater than the conventional sizes suitable for soil mechanics tests, it is necessary to experimentally study them in specific large-scale apparatuses. in this research, the behavior of rockfill materials in two large rockfill dams co...

In this paper, we consider the numerical justification of possibility to construct a low-cement content concrete gravity dam as an alternative traditional solution with rockfill in Pskem HPP canyon on river Uzbekistan Republic. The calculation studies were performed using finite element method (FEM), considering non-linear (elastoplastic) behavior and foundation rock ANSYS software package. Sei...

Ecological consequences of large dams, particularly regarding the Three Gorges Dam (TGD) on the Yangtze River in China, have been controversially and internationally discussed. Water quality within the Three Gorges Reservoir (TGR) has been deteriorated by highly underestimated eutrophication and algal blooms. Globally, the TGR is delineated from other comparable reservoirs by its low mean water...

The widespread availability of soft rocks and their increasing use as cheap rockfill material is adding more to geotechnical hazards because time-dependent granular decomposition causes significant damage to their mechanical properties. An experimental study was conducted through monotonic torsional shear tests on crushed soft rocks under fully saturated and dry conditions and compared with ana...

The high-shear colloidal mixer is generally recognised as the most efficient method of mixing cement based grouts. Only recently however has this technology been applied to the production of cemented rockfill (CRF) for use in underground mines in North America. Traditionally, paddle type mixers have been used to produce the cement based slurries required for the preparation of CRF. While consid...