Effect of Particle Contact Bond on Shear Modulus

Chang, Tzyy-Shiou; Woods, Richard D.

doi:10.1061/(asce)0733-9410(1992)118:8(1216)

Cited by 76 publications

(19 citation statements)

References 8 publications

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“…The effect of cementation on the mechanical behavior of fine sandy soils has been considered by several researchers. Saxena and Lastrico (1978), Dupas and Pecker (1979), Clough et al (1981), O'Rourke and Crespo (1988), Lade and Overton (1989), Leroueil and Vaughan (1990), Chang and Woods (1992), Coop and Atkinson (1993), Airey (1993), Huang and Airey (1998), Malandraki and Toll (2001), Schnaid et al (2001), Ismail et al (2002) and Rotta et al (2003) presented useful contributions in this field. Study of the effect of cementation on the mechanical behavior of cemented gravely sands started in late 20th century (1998) when the mechanical behavior of coarse-grained alluvium of the city of Tehran was investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cement Type on the Mechanical Behavior of a Gravely Sand

et al. 2006

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The behavior of a cemented gravely sand was studied using triaxial compression tests. Gypsum, Portland cement and lime were used as the cementing agents in sample preparation. The samples with different cement types were compared in equal cement contents. Three cement contents of 1.5%, 3.0% and 4.5% were selected for sample preparation. Drained and undrained triaxial compression tests were conducted in a range of confining pressures from 25 kPa to 500 kPa. Failure modes, shear strength, stress-strain behavior, volume and pore pressure changes were considered. The gypsum cement induced the highest brittleness in soil among three cement types while the Portland cement was found to be the most ductile cementing agent. In lower cement contents and lower confining pressures the soil cemented with Portland cement showed the highest shear strength. However, in the same range of cement content, the soil cemented with gypsum showed highest shear strength for highest tested confining stress. For higher cement contents the shear strength of soil cemented with Portland cement is higher than that for the two other cement types for the range of confining pressures tested in the present study. The samples cemented with lime had the least peak and ultimate shear strength and the highest pore pressure generation in undrained tests. Contrary to the soil cemented with lime, the brittleness of soil cemented with gypsum and Portland cement reduces in undrained condition. Finally it was found that the effect of cement type on the shear strength of cemented soils is more profound in drained condition compared to undrained state.

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Section: Introductionmentioning

confidence: 99%

Effect of Cement Type on the Mechanical Behavior of a Gravely Sand

et al. 2006

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“…al 1988;Chang et. al, 1990;Chang and Woods 1992;Fernandez and Santamarina 2001). These studies show that wave velocity of cemented sands is mainly affected by cement content, confining pressure, and void ratio.…”

Section: Low-strain Stiffness Models For Cemented Sandsmentioning

confidence: 96%

“…(+) Range of the ratio G c / G sand for a variation of cement content from 2.5 to 10 % (∆cc=7.5%) at low confinement (σ o = 25 kPa) (#) Slope of linear velocity-void ratio relationship for cc= 2.5 %, 5.0 %, and 10 % and σ o = 25 kPa. Chang and Woods (1992) studied four cemented sands with different particle sizes, described using D 10 , and the uniformity coefficient, C u . Mixtures of sodium silicate, Portland cement, fly ash, and lime were used as the cementing agents.…”

Section: Low-strain Stiffness Models For Cemented Sandsmentioning

confidence: 99%

“…Coordination number varies almost linearly with void ratio (Chang et. al 1990, Chang and Woods 1992, Cascante and Santamarina 1996. Different relationships between coordination number and void ratio have been proposed, for example: For the analysis of wave velocity, it is important to compute the void ratios of the sand matrix (e) and the cemented sand after curing (e m ).…”

Section: General Equationsmentioning

confidence: 99%

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Characterization of a Cemented Sand with the Pulse‐Velocity Method

Majid¹,

Khan²,

Cascante³

et al. 2004

Symposium on the Application of Geophysics to Engineering and Environmental Problems 2004

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The effect of variation in cement content, initial water content, void ratio, and curing time on wave velocity (low-strain property) and unconfined compressive strength (large-strain property) of a cemented sand is examined in this paper. The measured pulse velocity is compared with predictions made using empirical and analytical models, which are mostly based on the published results of resonant column tests. All specimens are made by mixing silica sand and gypsum cement (2.5 to 20 % by weight) and tested under atmospheric pressure. The wave velocity reaches a maximum at optimum water content, and it is mostly affected by the number of cemented contacts; whereas compressive strength is governed not only by the number of contacts but also by the strength of contacts. Wave velocities measured in small and large specimens are used to calculate the Poisson's ratio of the cemented sand. Experimental relationships are developed for compressional wave velocity and unconfined compressive strength as functions of cement content and void ratio. Available empirical models under-predict the wave velocity (90% on average), likely because of the effect of micro-fractures induced by confinement during the testing. Wave velocity is found to be a good indicator of cement content and unconfined compressive strength for the conditions of this study.

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“…The literature review shows that natural or artificial cementation increases G 0 of sands (Acar & El-Tahir, 1986;Saxena et al, 1988;Chang & Woods, 1992;Sharma & Fahey, 2004) and clays (Jovičić et al, 2006;Puppala et al, 2006) in comparison with G 0 of the corresponding reconstituted soil at the same mean effective stress. According to Acar & El-Tahir (1986) and Delfosse-Ribay et al (2004), shear modulus of cemented sands increased with confining stress in the whole applied range.…”

Section: Introductionmentioning

confidence: 99%

Small-strain behaviour of cemented soils

Trhlíková¹,

Maš́ın²,

Boháč³

2012

Géotechnique

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The shear modulus of cemented soils at very small strain (G 0 ) was studied. For artificially cemented clay, G 0 was found to be independent of the mean effective stress until the yield stress. After yield, a significant effect of structure degradation on G 0 was observed. The experimental data were interpreted by an equation, which relates G 0 of cemented soils to mean stress, apparent overconsolidation ratio and the state of structure (sensitivity). The equation was also found to represent G 0 of cemented sands.

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Effect of Particle Contact Bond on Shear Modulus

Cited by 76 publications

References 8 publications

Effect of Cement Type on the Mechanical Behavior of a Gravely Sand

Effect of Cement Type on the Mechanical Behavior of a Gravely Sand

Characterization of a Cemented Sand with the Pulse‐Velocity Method

Small-strain behaviour of cemented soils

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