Abstract The present study investigates the mechanical performance of recycled aggregates derived from excavation materials (REM). REM is blended with different quantities phyllite (RPM) and investigated by Los Angeles (LA) micro-Deval (MD) tests. X-ray diffraction (XRD) acid solubility test are performed on pulverized fractions < 1.6 mm obtained LA MD tests to assess respective degree fragm...

La Unión pluton (LUP) belongs to the metamorphic and igneous Sula Terrane (ST) of Central Guatemala, limited north by Motagua fault (MF) south Jocotán-Chamelecón system (J-CH-FS). The basement ST is characterized high-grade rocks belonging Las Ovejas Complex extensive low-grade San Diego phyllite, latter in tectonic contact with LUP. A combination field data, petrographic geochemical analyses a...

In this study, we evaluate the changes in ultrasonic signatures (i.e., frequency content, velocity, amplitude, and attenuation) due to stress-induced alteration of fracture aperture/permeability. Flow-through experiments were performed on artificially-fractured phyllite specimens along with concurrent measurements under different stress conditions. Increasing pore pressure led opening, as indic...

This paper focuses on the development of high-strength and eco-friendly one-part (i.e., dry-mix) alkali-activated mortar with ground granulated blast furnace slag as main precursor. In addition to slag, phyllite dust silica fume were used co-binders in binary ternary blends improve mechanical properties. Particle packing optimization was employed for mix proportioning achieve a compact matrix s...

Geological mapping was carried out on the Gilas and Malau rivers in Muaradua area, South Ogan Komering Ulu Regency, Sumatra by observing presence of joints, faults, veins granite phyllite rock outcrops Tarap Formation. Research pattern geometry vein type crushing zone is focused measuring direction (trend) joints. The measurement results are then analyzed to obtain a general quartz calcite so t...