Undrained cyclic shear and deformation behavior of silt–clay mixtures of Adapazarı, Turkey

Yılmaz, Murat; Pekcan, Onur; Bakır, B. Sadık

doi:10.1016/j.soildyn.2004.04.002

Cited by 44 publications

(14 citation statements)

References 18 publications

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“…Subsequently the dynamic strength behavior was also studied and several significant conclusions were obtained (Tang et al 2004). Yılmaz et al (2004) focused on the deformation behavior and undrained cyclic shear to consider of the severity of foundation displacements. Boulanger and Idriss (2007) gave a kind of method to evaluation the potential for cyclic softening.…”

Section: Introductionmentioning

confidence: 99%

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Tang

Zhou

et al. 2010

Environ Earth Sci

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Based on the cyclic triaxial test under step loading, the variation of cyclic creep and pore water pressure with increase in cyclic stress ratio (CSR) and load cycle of mucky clay in Shanghai were analyzed. The results show that there are two threshold values of stability cyclic stress ratio and failure cyclic stress ratio during the step loading which divide the development of cyclic creep strain into gradual stability stage, rapid growth stage and instantaneous failure stage. When the stress level is less than the failure cyclic stress ratio, the recoverable elastic strain is nearly linear with CSR. The cyclic creep properties of mucky clay are obviously influenced by the loading frequency under the same stress level.

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Section: Introductionmentioning

confidence: 99%

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Tang

Zhou

et al. 2010

Environ Earth Sci

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“…Undrained cyclic triaxial tests on fully saturated samples were used to study the dynamic characteristics of peat and sand. Anisotropic consolidation was used to specifically simulate stress conditions of a soil under asymmetric loading and at shallow depths [16]. This process was done by initially applying an all around confining pressure of 100kPa, followed by an initial static axial stress (σ i ) which was always kept at half of the monotonic strength/peak deviator stress (σ p ) of the sample (σ i = 0.5σ p ).…”

Section: Test Materials and Methods Approachmentioning

confidence: 99%

Comparison Study of the Dynamic Loading Characteristics between Peat and Sand Based on its Physical Properties

Zainorabidin

Zolkefle

Siang

et al. 2015

AMM

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Abstract. Peat soils are challenging soils which are a problem for many geotechnical engineers especially in the design of shallow foundations and road constructions. The engineering properties of peat are dependent on the nature of its physical properties. Micro structural studies done on the soil shows that it consists of fibres which cause the soil to be highly compressible resulting in excessive settlement when they are subjected to moderate load increments or vibrations produce by traffic. In this paper, dynamic testing was done to approximately simulate traffic loading characteristics on peat taken from Parit Nipah and Pontian, Johor using a cyclic triaxial testing with 1Hz loading frequency. The results were compared with soil that has a stiffer particulate nature such as sand. The comparison showed that the dynamic loading parameters of dynamic shear modulus and damping ratio of peat was dependent on the fiber content and was very much lower than that of well graded and uniform sands. This can be an important indication to understand the key parameter behaviour of peat that must be taken into account when designing and managing infrastructures on peat soils.

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“…Several investigators have blamed the inferior soils for the hundreds of buildings that suffered damage during the 1999 Kocaeli earthquake and speculated on the causes of ground failures. The findings vary from the effect of the plasticity index and liquidity index on liquefaction (Bray et al 2001(Bray et al , 2004aSancio et al 2002) to the decay of the shearing resistance under cyclic loads (Yilmaz et al 2004). Exhaustive geological, geomorphological and geotechnical studies were undertaken by this team during the next seven years by means of surface observations and recording of damage to the superstructures right after the 1999 event, drilling of boreholes, laboratory testing accompanied by standard penetration resistance measurements as well as seismic piezocone testing (SCPTU) have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Liquefaction of silts: the Adapazari criteria

Bol

Önalp

Arel

et al. 2010

Bull Earthquake Eng

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Ground failures in the form of liquefaction, loss of bearing capacity and soil softening have been observed during the 1999 Marmara (Turkey) earthquake. Research to understand the failure phenomena has been carried out since the earthquakes. This paper attempts to provide explanations to the liquefaction failure of silts in seismic conditions. Findings from a large amount of data collected in the city of Adapazari on the physical and mechanical properties of soils is presented. A geomorphological map of the city has shown that there are surprising horizontal and vertical variations of the facies due to the activity of rivers in the past. Cases of liquefaction appear to have concentrated in former backswamp areas where silts and sandy silts were deposited by crevasse splays. Properties of the soils in zones of liquefaction and non-liquefaction have been determined down to a reasonable depth by measuring the average size, clay content and liquidity index as well as cone penetration resistances with porewater pressures to discover that there is significant discrepancy among those profiles susceptible to liquefaction and non-liquefying deposits. A set of "Adapazari Criteria" is proposed which is intended to improve over the "Chinese Criteria" and is simple enough to be universally applicable. This classification is similar to the existing criteria but emphasizes more on the clay content in addition to measuring the liquid limit and the liquidity index as well as the average size.

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Undrained cyclic shear and deformation behavior of silt–clay mixtures of Adapazarı, Turkey

Cited by 44 publications

References 18 publications

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Comparison Study of the Dynamic Loading Characteristics between Peat and Sand Based on its Physical Properties

Liquefaction of silts: the Adapazari criteria

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