Soil stabilization is the most common ground improvement technique adopted to improve problematic soil properties. This investigation exhibits a series of laboratory tests conducted evaluate influences bagasse fibres and hydrated lime addition on engineering properties shrink-swell behaviour stabilised expansive soils. Bagasse fibre industrial waste by-product left after crushing sugar cane for juice extraction that was used in this study as reinforcing component stabilization. The soils...

ABSTRACT: In this study, the influence of three types fibre – polypropylene, recycled carpet and steel on mechanical properties cement-treated clay is investigated. Cement-treated specimens were prepared with cement contents 5%, 10% 15% by weight dry soil, cured for 14 days. To investigate understand different contents, percentages content adopted. The results unconfined compression tests 90 cylindrical samples varied are analysed to discern relationships between these parameters key...

The seismic excitation experienced by structures is a function of the earthquake source, travel path effects, local site and soil-structure interaction (SSI) influences. result first three these factors referred to as free-field ground motion. structural response motion influenced SSI. In particular, accelerations within are affected flexibility foundation support variations between motions. Consequently, an accurate assessment inertial forces displacements in can require rational treatment...

The present research intends to study the effects of seismic soil-pile-structure interaction (SSPSI) on dynamic response buildings with various heights by conducting a series shaking table tests 5-, 10-story, and 15-story model structures. Two types foundations for each case are investigated, including (1) fixed-base structure, representing situation excluding soil-structure interaction; (2) structure supported an end-bearing pile foundation in soft soil. An advanced laminar soil container...

Pile foundations are usually used to transmit foundation loads through soil strata of low bearing capacity deeper or rock with a higher and stiffness. The type size pile that supports midrise buildings in high-risk seismic zones can alter the dynamic characteristics soil–pile–foundation system during an earthquake due soil–structure interaction. To investigate these phenomena, 15-story moment-resisting frame sitting on differently sized end-bearing floating was simulated numerically. present...

Bagasse is a fibrous material remaining after crushing sugarcane to extract its juice; and bagasse ash produced burning bagasse. Improper disposal of this can create environmental problems around sugar manufacturing plants. ash, comprising high percentage silica (SiO2), considered as sensible pozzolanic with non-reactive behaviour has potential be used in road subgrade stabilisation. One the main challenges for transportation organisations Australia treat subgrades including expansive soils....

While design methods of deep foundations are mainly developed for homogenous soil deposits, the presence highly cemented layers could lead to underestimation resistance and overestimation settlement pile foundations. This study presents a novel approach using competent caliche bonded top bottom continuous flight auger (CFA) as new composite foundation system named stiffened (CSP). The key objective is optimize required length in cost-effective without ameliorating properties. Settlements CSP...

ABSTRACT: To improve the dynamic properties of soft soil, cement treatment technique combined with fibre reinforcement can be employed. In this study, effects two types fibres (polypropylene and recycled carpet) on hardening process small-strain cement-treated kaolinite bentonite clays are investigated. Cement-treated clay specimens were prepared using contents 5%, 10% 15% by weight dry soil for samples, 30%, 40% 50% samples. investigate understand influence different contents, three...

SUMMARY This paper introduces an exact analytical solution for governing flow equations one‐dimensional consolidation in unsaturated soil stratum using the techniques of eigenfunction expansion and Laplace transformation. The homogeneous boundary conditions adopted this study are as follows: (i) a one‐way drainage system homogenous soils, which top surface is considered permeable to air water, whereas base impervious bedrock; (ii) two‐way where both ends allow free dissipation pore‐air...

In selecting the type of foundation best suited for mid-rise buildings in high risk seismic zones, design engineers may consider that a shallow foundation, pile or pile-raft can carry static and dynamic loads. However, different types foundations behave differently during earthquakes, depending on soil–structure interaction (SSI) where properties situ soil change characteristics (natural frequency damping) soil–foundation–structure system. order to investigate SSI its influence response...

Seismic pounding occurs when the separation gap between buildings and structures is not wide enough, particularly during major earthquake events; this can cause them to collide, causing local damage or, in extreme cases, collapse. This study investigated impact that has on seismic response of midrise supported piles while considering soil–pile–structure interaction (SSPSI). To achieve aim, three 15-story reinforced concrete sitting pile foundations with five different gaps under excitations...

In this study, the accuracy of a fully nonlinear method against an equivalent linear for dynamic analysis soil-structure interaction is investigated comparing predicted results both numerical procedures. Three structural models, including 5-story, 10-story, and 15-story buildings, are simulated in conjunction with two soil types shear-wave velocities less than 600 m/s. The aforementioned frames were analyzed under three different conditions: (1) fixed-base model performing conventional time...

In this study, an enhanced numerical soil-structure model has been developed which treats the behaviour of soil and structure with equal rigour. The proposed verified validated by performing experimental shaking table tests. To achieve goal, a series tests were performed on physical fixed based (structure directly top table) flexible base (considering structure) models under influence four scaled earthquake acceleration records results measured. Comparing analysis predictions, it is noted...

Shallow footings are one of the most common types foundations used to support mid-rise buildings in high risk seismic zones. Recent findings have revealed that dynamic interaction between soil, foundation, and superstructure can influence response building during earthquakes. Accordingly, properties a foundation alter characteristics (natural frequency damping) soil-foundation-structure system. In this paper shallow on moment resisting is investigated. For purpose, fifteen storey frame...

During consolidation, excess pore-air and pore-water pressures are forced to dissipate through permeable boundaries. This dissipation process inevitably results in the reduction of soil volume, thus settlement. Such a phenomenon can be mathematically described by inhomogeneous governing equations flow according Fick's (with respect air phase) Darcy's water laws. paper discusses settlement an unsaturated layer subjected various time-dependent external loadings. An analytical solution is...

The use of native vegetation in the coastal regions Australia has become increasingly popular for stabilising railway corridors built over expansive clays and compressive soft soils. tree roots provide three functions: (a) they reinforce soil; (b) dissipate excess pore pressures; (c) establish sufficient matric suction to increase shear strength. generated within root zone propagates radially into soil matrix, as a function moisture content change. Considering conditions, type atmospheric...