The construction sector is currently struggling with the reuse of waste originating from demolition and modernization buildings roads. Furthermore, old are gradually being replaced by new structures. This brings a significant increase concrete debris to landfills. To prevent this, many studies on possibilities recycling concrete, known as recycled aggregate (RCA), have been done. broaden applic...

Coral sand, which is an important filler resource in coastal areas, continuously subjected to repeated waves or traffic loading. In this study, a series of oedometer tests are conducted on coral sand and silica under loading, the results compared. The influence initial density number amplitude loading volumetric deformation, soil stiffness, particle breakage investigated. reveal that deformatio...

The main objective of this study is to determine the appropriateness unsaturated gypseous soil as a subgrade layer for carrying foundations. A comprehensive laboratory testing program was implemented investigate geotechnical characteristics and behavior soil. Tests that are physical included specific gravity, classification tests, relative density, Proctor compactions, single double oedometer c...

The characterization of gas migration through low-permeability clay formations has been a focus of R&D programs for radioactive waste disposal, which is also of great importance for shale-gas exploration, and cap-rock behavior of hydrocarbon reservoirs and CO2 sequestration. Laboratory tests on Opalinus clay cores from a shallow borehole in the Mont Terri Underground Research Laboratory (URL) a...

This study explores the effects of sample disturbance on compression curves obtained from oedometer tests and inferred effective preconsolidation stress (sp'). The samples were systematically disturbed by removing different fractions soil ranging 10%, 20%, 30%, 40%, 50% remolding them back into place to reach same initial void ratio. It was found that when rate increased, it became more difficu...

The aim of this paper is to study the effect organic matter (OM) content on effectiveness soil stabilization process using biopolymer xanthan gum. Five different artificial soils with an in range 1.5 7.7% are subjected unconfined compressive strength (UCS) and oedometer tests evaluate their strength, stiffness compressibility, respectively. These results complemented by analysis SEM images. fro...

The Essen site has been chosen as an alternative site for nuclear waste disposal in Belgium. The soil formation involved at this site is the same as at Mol site: Boom clay. However, owing to its geographical situation closer to the sea, Boom clay at Essen presents a pore water salinity 4-5 times higher than Boom clay at Mol. This study aims at studying the effects of pore water salinity on the ...

City of Vantaa considers constructing a truck parking area and a filling station on a soft clay deposit in Luhtaanmäki, Vantaa (in Finland). The aim of this study was to evaluate whether vacuum preloading with vertical drains is a feasible ground improvement method for the site. Besides in situ –tests and classification tests, overall 18 oedometer tests were carried out. Preliminary design of v...

Mixtures of small rigid sand particles Ds and large soft rubber particles Dr are prepared at different volume fractions and tested to investigate their small-strain and zero-lateral strain responses (Dr /Ds & 10). Both data sets are simultaneously gathered in an oedometer cell instrumented with bender elements. Data are analyzed in the context of mixture theory and with the aid of numerical sim...

This study looks into the influence of matric suction on volume change gypsum sand soil in unsaturated conditions. The specimens were collected from Al-Najaf, Iraq, and included 14 29% gypsum. Three series initial stress laboratory tests utilized a modified oedometer device. For each content, twelve remolded examined circumstances with applied using four matrices (30 kPa, 18 9 saturated state)....