8 documents found, page 1 of 1

Estudo das causas dos assentamentos ocorridos no pavimento de um armazém automá...

Estudo das causas dos assentamentos ocorridos no pavimento de um armazém automá...

Unsaturated behaviour of soils stabilized with fly ash from coal combustion; [C...

The influence of suction on the mechanical behavior of chemically stabilized soils has not yet been consistently quantified, a situation also motivated by difficulties in the experimental procedure to characterize the unsaturated response. This paper presents retention curves obtained for a soil stabilized with Portland cement or an alkaline cement. Triaxial tests are also presented, for the same curing conditi...

Adaptations to a triaxial equipment for testing of mine tailings

Mine tailings are usually materials with particle sizes in the range of silts, frequently exhibiting very low consistency. This low-consistency condition poses challenges when trying to reconstitute specimens for triaxial testing. The first part of this work presents a description of the main geotechnical properties of mine tailings used in the tests and the difficulties associated with triaxial testing. Next, ...

Valorisation of C&D waste as backfill material of geosynthetic reinforced struc...

Influence of fibre reinforcement on the post-cracking behaviour of a cement-sta...

An experimental campaign was carried out to determine the influence of polypropylene fibre content and length on the post-cracking response of a sandy-clay stabilised with different cement contents. Three main sets of specimens were prepared: cement-stabilised specimens with two cement contents (5% and 10%); fibre-reinforced specimens with three fibre contents (0.1%, 0.2% and 0.3%) and cement-fibre reinforced s...

Reliability analysis of geosynthetic-reinforced steep slopes

In slope stability analysis, the high degree of uncertainty associated with design parameters has led to increasing use of reliability-based approaches as a means of evaluating the combined effects of such uncertainties on the structure performance. In this study, the reliability level of geosynthetic-reinforced steep slopes designed according to Eurocode 7 (EC7), without any additional margin of safety, was as...

Deep excavations in urban areas - finite element modelling for three geotechnic...

In the last decades large and deep cut-and-cover excavations for basements and for transport infrastructures became very common in urban areas. The solutions that have been constructed comprehend a large number of structural systems and soil-structure interaction problems. Among the distinct geotechnical works, deep excavations and their retaining structures were probably the ones whose analysis and design expe...