Jorge Zornberg - Academia.edu (original) (raw)
Papers by Jorge Zornberg
GEOSTRATA Magazine
Within the geosynthetics industry and the discipline of geotechnical engineering, Dr. Robert M. K... more Within the geosynthetics industry and the discipline of geotechnical engineering, Dr. Robert M. Koerner, PhD, PE, D.GE, NAE, Dist.M.ASCE, will always be remembered for his boundless energy and enth...
GEOSTRATA Magazine
Even though geosynthetics are now a well-established discipline within geotechnical engineering, ... more Even though geosynthetics are now a well-established discipline within geotechnical engineering, ingenuity continues to play a significant role in projects involving their use. This is because it’s possible to tailor the mechanical and hydraulic properties of geosynthetics to address design needs in almost all aspects of geotechnical engineering. Although the ability to achieve consistent geosynthetic properties has been a key consideration since their early use, concerns about their lifespan have subjected geosynthetics to careful scrutiny.
The effect of lime treatment on the reduction of swelling potential of an expansive soil was stud... more The effect of lime treatment on the reduction of swelling potential of an expansive soil was studied using the new geotechnical centrifuge developed by The University of Texas at Austin. The expansive soil Eagle Ford clay was treated with different percentages of lime. The compaction density was varied between 94% and 100% of the maximum dry density, and the compaction moisture was varied between dry of optimum, optimum and wet of optimum moisture content. The results demonstrated that higher potential swelling was observed in specimens prepared with densities near to the maximum than the specimens with lower density compaction. The strong influence of the compaction moisture on swelling showed the same trend observed in untreated soils. High potential swelling was produced in specimens compacted at dry of optimum moisture whereas specimens compacted at optimum or wet of optimum moisture content showed lower swelling potential. The lime percentage required to avoid the swelling depe...
Construction and Building Materials, 2018
Géotechnique, 2019
Geosynthetic-reinforced retaining (GRR) walls typically have vertical reinforcement spacing of 0·... more Geosynthetic-reinforced retaining (GRR) walls typically have vertical reinforcement spacing of 0·6 m, and this relatively large spacing has been known to cause comparatively high connection forces. To reduce this connection force, short geosynthetic reinforcement layers (referred to as secondary reinforcement layers) are installed between blocks where there are no primary reinforcement layers. This paper presents two-dimensional numerical simulations that were developed to analyse an instrumented GRR wall with secondary reinforcement layers in the field. A finite differential software was employed to develop the numerical model. In addition to the Mohr–Coulomb model, the cap yield model based on the theory of hardening plasticity was used to represent the behaviour of backfill. Inclinometer casings, earth pressure cells and strain gauges were installed in the instrumented GRR walls to measure the facing deflections, lateral earth pressures, vertical earth pressures and geogrid strai...
Computers and Geotechnics, 2019
Procedia Engineering, 2017
Anais do XVIII Congresso Brasileiro de Mecânica dos Solos e Engenharia Geotécnica, 2016
Geosynthetics International, 2014
ABSTRACT: This paper presents an evaluation of the performance of two instrumented sections of a ... more ABSTRACT: This paper presents an evaluation of the performance of two instrumented sections of a geosynthetic-reinforced soil wall, 5.6 m high, constructed using a lateritic fine-grained soil. Two sections with identical layout of a nonwoven and a woven geotextile were monitored for comparison purposes. The unconfined tensile stiffness of the nonwoven geotextile was three times smaller than that of the woven geotextile. This allowed direct evaluation of the effect of soil confinement on geotextile stiffness. Instrumentation was used to measure face displacements, reinforcement displacement and strains, and soil matric suction. Rainfall occurred both during and after construction, which facilitated evaluation of the effect of soil wetting on the walls performance. Ultimate and serviceability limit state analyses were conducted to gain further insight into the performance of the two walls. The results show that the performance of the section reinforced with nonwoven geotextile was equ...
The Handbook of Groundwater Engineering, Second Edition, 2006
Geosynthetic Clay Liners for Waste Containment Facilities, 2010
Slopes and Retaining Structures Under Seismic and Static Conditions, 2005
The Handbook of Groundwater Engineering, 1998
Transportation Research Record: Journal of the Transportation Research Board, 2004
The mechanical response of a prototype embankment fill built with tire shreds and nongranular soi... more The mechanical response of a prototype embankment fill built with tire shreds and nongranular soil was evaluated. The test embankment consisted of three distinct sections, each 10 m (33 ft) long and 1.5 m (4.9 ft) high. Specifically, the embankment included a layered section composed of successive layers of soil and tire shreds, a soil-tire shred mixed section with 10% tire shreds by weight, and a pure soil section. The embankment was exposed to heavy-truck traffic immediately after construction. At 120 days after construction, the settlement rate in the two sections containing tire shreds converged to a rate similar to that observed in the section of pure soil. However, the section constructed with soil-tire shred mixture exhibited a better overall long-term behavior than the layered section, as it showed smaller differential settlements. The results collected in this study also provide insight into the in situ compression and compaction procedures and preparation characteristics o...
GEOSTRATA Magazine
Within the geosynthetics industry and the discipline of geotechnical engineering, Dr. Robert M. K... more Within the geosynthetics industry and the discipline of geotechnical engineering, Dr. Robert M. Koerner, PhD, PE, D.GE, NAE, Dist.M.ASCE, will always be remembered for his boundless energy and enth...
GEOSTRATA Magazine
Even though geosynthetics are now a well-established discipline within geotechnical engineering, ... more Even though geosynthetics are now a well-established discipline within geotechnical engineering, ingenuity continues to play a significant role in projects involving their use. This is because it’s possible to tailor the mechanical and hydraulic properties of geosynthetics to address design needs in almost all aspects of geotechnical engineering. Although the ability to achieve consistent geosynthetic properties has been a key consideration since their early use, concerns about their lifespan have subjected geosynthetics to careful scrutiny.
The effect of lime treatment on the reduction of swelling potential of an expansive soil was stud... more The effect of lime treatment on the reduction of swelling potential of an expansive soil was studied using the new geotechnical centrifuge developed by The University of Texas at Austin. The expansive soil Eagle Ford clay was treated with different percentages of lime. The compaction density was varied between 94% and 100% of the maximum dry density, and the compaction moisture was varied between dry of optimum, optimum and wet of optimum moisture content. The results demonstrated that higher potential swelling was observed in specimens prepared with densities near to the maximum than the specimens with lower density compaction. The strong influence of the compaction moisture on swelling showed the same trend observed in untreated soils. High potential swelling was produced in specimens compacted at dry of optimum moisture whereas specimens compacted at optimum or wet of optimum moisture content showed lower swelling potential. The lime percentage required to avoid the swelling depe...
Construction and Building Materials, 2018
Géotechnique, 2019
Geosynthetic-reinforced retaining (GRR) walls typically have vertical reinforcement spacing of 0·... more Geosynthetic-reinforced retaining (GRR) walls typically have vertical reinforcement spacing of 0·6 m, and this relatively large spacing has been known to cause comparatively high connection forces. To reduce this connection force, short geosynthetic reinforcement layers (referred to as secondary reinforcement layers) are installed between blocks where there are no primary reinforcement layers. This paper presents two-dimensional numerical simulations that were developed to analyse an instrumented GRR wall with secondary reinforcement layers in the field. A finite differential software was employed to develop the numerical model. In addition to the Mohr–Coulomb model, the cap yield model based on the theory of hardening plasticity was used to represent the behaviour of backfill. Inclinometer casings, earth pressure cells and strain gauges were installed in the instrumented GRR walls to measure the facing deflections, lateral earth pressures, vertical earth pressures and geogrid strai...
Computers and Geotechnics, 2019
Procedia Engineering, 2017
Anais do XVIII Congresso Brasileiro de Mecânica dos Solos e Engenharia Geotécnica, 2016
Geosynthetics International, 2014
ABSTRACT: This paper presents an evaluation of the performance of two instrumented sections of a ... more ABSTRACT: This paper presents an evaluation of the performance of two instrumented sections of a geosynthetic-reinforced soil wall, 5.6 m high, constructed using a lateritic fine-grained soil. Two sections with identical layout of a nonwoven and a woven geotextile were monitored for comparison purposes. The unconfined tensile stiffness of the nonwoven geotextile was three times smaller than that of the woven geotextile. This allowed direct evaluation of the effect of soil confinement on geotextile stiffness. Instrumentation was used to measure face displacements, reinforcement displacement and strains, and soil matric suction. Rainfall occurred both during and after construction, which facilitated evaluation of the effect of soil wetting on the walls performance. Ultimate and serviceability limit state analyses were conducted to gain further insight into the performance of the two walls. The results show that the performance of the section reinforced with nonwoven geotextile was equ...
The Handbook of Groundwater Engineering, Second Edition, 2006
Geosynthetic Clay Liners for Waste Containment Facilities, 2010
Slopes and Retaining Structures Under Seismic and Static Conditions, 2005
The Handbook of Groundwater Engineering, 1998
Transportation Research Record: Journal of the Transportation Research Board, 2004
The mechanical response of a prototype embankment fill built with tire shreds and nongranular soi... more The mechanical response of a prototype embankment fill built with tire shreds and nongranular soil was evaluated. The test embankment consisted of three distinct sections, each 10 m (33 ft) long and 1.5 m (4.9 ft) high. Specifically, the embankment included a layered section composed of successive layers of soil and tire shreds, a soil-tire shred mixed section with 10% tire shreds by weight, and a pure soil section. The embankment was exposed to heavy-truck traffic immediately after construction. At 120 days after construction, the settlement rate in the two sections containing tire shreds converged to a rate similar to that observed in the section of pure soil. However, the section constructed with soil-tire shred mixture exhibited a better overall long-term behavior than the layered section, as it showed smaller differential settlements. The results collected in this study also provide insight into the in situ compression and compaction procedures and preparation characteristics o...