Search Results - "Lourenco, Sergio D. N."

Volumetric behavior of saturated sands under poor drainage conditions by Lourenço, Sérgio D. N., Wang, Gonghui, Sassa, Kyoji, Fukuoka, Hiroshi

“…Permeability variations have been identified as a key factor in controlling slope failure locations in rainfall‐induced landslides. In this research, failure…”
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Advances in suction measurements using high suction tensiometers by Toll, David G., Lourenço, Sérgio D.N., Mendes, João

“…Significant advances in unsaturated soils testing have been gained through the development of high suction tensiometers allowing direct measurement of suction…”
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Factors affecting the soil–water retention curve of Chinese loess by Zhang, Fanyu, Zhao, Chongxi, Lourenço, Sérgio D. N., Dong, Simeng, Jiang, Yao

“…Loess is unsaturated soil that occurs in various locations on the surface of the Earth, and it is most widespread in the Chinese Loess Plateau where it has…”
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Experimental insight into the particle morphology changes associated with landslide movement by Zuo, Lu, Lourenco, Sergio D. N., Baudet, Beatrice A.

“…Rainfall-induced landslides are major natural hazards that are inherently inter-disciplinary crossing various fields (from geology to hydrology) and scales…”
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A large landslide triggered by the 2008 Wenchuan (M8.0) earthquake in Donghekou area: Phenomena and mechanisms by Wang, Gonghui, Huang, Runqiu, Lourenço, Sérgio D.N., Kamai, Toshitaka

“…During the 2008 Wenchuan earthquake, more than 60,000 landslides were triggered, resulting in about 20,000 casualties. Among these landslides, a catastrophic…”
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Processes in model slopes made of mixtures of wettable and water repellent sand: Implications for the initiation of debris flows in dry slopes by Lourenço, Sérgio D.N., Wang, Gong-Hui, Kamai, Toshitaka

“…Debris flows in slopes initially dry, such as post-wildfire debris flows, are initiated by surface runoff and sediment bulking due to reduced infiltration…”
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Geomorphologic features related to gravitational collapse: Submarine landsliding to lateral spreading on a Late Miocene–Quaternary slope (SE Crete, eastern Mediterranean) by Alves, Tiago M., Lourenço, Sérgio D.N.

“…Detailed geological mapping, complemented by sedimentary facies analysis, photomosaics and topographic measurements (height, width) allowed the investigation…”
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3D Analysis of gravel surface texture by Yang, Hong-Wei, Lourenço, Sérgio D.N., Baudet, Béatrice A., Choi, Clarence E., Ng, Charles W.W.

“…Surface texture plays an important role in understanding the mechanical and hydraulic behavior of a soil but has drawn little attention, especially for three…”
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Quantification of the surface roughness of quartz sand using optical interferometry by Yao, Ting, Baudet, Beatrice A., Lourenço, Sérgio D. N.

“…In comparison to the description of particle size and shape, the surface roughness, which mainly affects the inter-particle friction, is more difficult to…”
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Landslide Amplification by Liquefaction of Runout-Path Material after the 2008 Wenchuan (M 8·0) Earthquake, China by Wang, Gonghui, Huang, Runqiu, Chigira, Masahiro, Wu, Xiyong, Lourenço, Sérgio D. N.

“…ABSTRACT Here, we propose that an earthquake can trigger the failure of a landslide mass while simultaneously triggering liquefaction of runout‐path materials…”
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Wettability decay in an oil-contaminated waste-mineral mixture with dry-wet cycles by Lourenço, Sérgio D. N, Wakefield, Clare F, Morley, Christopher P, Doerr, Stefan H, Bryant, Robert

“…The dependency of soil particle wettability on soil water content implies that soils subjected to drying-wetting cycles become wettable with wetting and water…”
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Accelerated weathering of hydrophobized sands by Lin, Hongjie, Lourenço, Sérgio D. N.

“…Hydrophobized sands have been suggested as materials for hydraulic barriers in infrastructure. When placed at the interface ground–atmosphere, environmental…”
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Stress-dilatancy behaviour of a polymer-coated sand by Liu, Deyun, Lourenço, Sérgio D. N.

“…Natural sands can be coated by substances of various origins, from natural to anthropogenic substances (from contamination or synthesized). Therefore,…”
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Controllable hydrophobization of sands with self-healing polymeric microcapsules by Qi, Rui, Chen, Ke, Lin, Hongjie, Lourenço, Sérgio D. N., Kanellopoulos, Antonios

“…Hydrophobized soils have functional hydrophobic coatings to delay or restrict water infiltration and thus prevent infrastructure failure and long-term…”
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Aspects of sand behaviour by modified constant shear drained tests by Lourenço, Sérgio D. N., Wang, Gong-Hui, Chu, Jian

“…Constant shear drained tests (CSD) are probably the most suitable to simulate the strength and deformation behaviour of soils in slopes under water…”
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Shear strength recovery of sand with self-healing polymeric capsules by Qi, Rui, Chen, Ke, Lin, Hongjie, Kanellopoulos, Antonios, Deyun, Liu, Leung, Anthony Kwan, Lourenço, Sérgio D. N.

“…Self-healing approaches are increasingly being explored in various fields as a potential method to recover damaged material properties. By self-recovering…”
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Temporal variations of surface roughness and thickness of polymer-coated quartz sand by Saulick, Yunesh, Yang, Hong-Wei, Lourenço, Sérgio D. N.

“…In this work, the changes in surface roughness and thickness of particles have been investigated after coating with polymers that result in hydrophobicity…”
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Essentially non-hourglass SPH elastic dynamics by Zhang, Shuaihao, Lourenço, Sérgio D.N., Wu, Dong, Zhang, Chi, Hu, Xiangyu

“…More than two decades ago, the numerical instabilities of particle clustering and non-physical fractures encountered in the simulations of typical elastic…”
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An exploration on the degradation of hydrophobized sands as a subgrade impervious barrier during one-year outdoor weathering by Lin, Hongjie, Huang, Gege, Lourenço, Sérgio D. N., Beckett, Christopher T. S., Xing, Xin, Liu, Jiankun

“…Water drives the decay of road subgrades such as frost heave in cold areas and collapse in saline soil areas, which influences the safety and comfort of…”
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Cover systems with synthetic water‐repellent soils by Zheng, Shuang, Xing, Xin, Lourenço, Sérgio D. N., Cleall, Peter J.

“…A cover system is a crucial component of engineered landfills, to minimize water percolation into the underlying waste. Capillary barriers are an alternative…”
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