This study aimed to evaluate the p-y behavior of pile foundations installed in saturated silty sand subject cyclic lateral loading. Model piles were with three relative densities (40%, 70%, 90%), and loads magnitudes repeatedly applied. The model test results revealed that as loading was applied piles, soil around became densified loose (relative density 40%), stiffness curve increased. In cont...

This paper investigates the physical, chemical, and microstructural properties of two types natural sand; alluvial sands dune sand from El-Oued region in northeastern Algerian Sahara. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Fluorescence (XRF), Scanning electron microscopy (SEM/EDS), granulometry analysis have been performed. The FTIR XRD prove that consist high ...

Excessive usage of sand in construction industries has generated many environmental issues. Silica aerogel, is able to minimise issues while providing thermal resistance for building materials. aerogel properties such as lightweight, nano-porous and very low conductivity compared the mortar matrix. This paper studied compression flexural strengths with silica a replacement. Cement ratio 1:3 was...

The present work investigates the mechanical and chemical characteristics durability of high-strength geopolymer concrete (HSGPC) developed using high-volume copper slag micro silica. objective study was to explore feasibility deploying as a replacement for river sand in fabrication concrete. In total, 11 different trials were cast by varying up 100% potential alternative sand. mixture alkaline...

To examine colloid transport in geochemically heterogeneous porous media at a scale comparable to field experiments, we monitored the migration of silica-coated zirconia colloids in a two-dimensional layered porous media containing sand coated to three different extents by ferric oxyhydroxides. Transport of the colloids was measured over 1.65 m and 95 days. Colloid transport was modeled by an a...

The influence of deicing chemicals on alkali reactivity of aggregates is still an area of active research. The potential alkali reactivity of aggregates is often tested using the ASTM C1260 method. This research used the modified ASTM C1260 to test the potential alkali reactivity of aggregates. The modification included replacing the standard 1N sodium hydroxide (NaOH) used in ASTM C1260 with e...

As part of the casting process, foundries create sand molds and cores to hold the molten metal to specific dimensional tolerances. Although most of the waste foundry sands (WFSs) from this process are land filled, there is great interest in diverting them for use in agricultural and geotechnical applications. One potential limitation to their beneficial use is concern that the WFSs will leach h...