The Experts below are selected from a list of 3273 Experts worldwide ranked by ideXlab platform
Gao Shui-qin - One of the best experts on this subject based on the ideXlab platform.
-
Case study of sand bag well applied on soft Soil Reinforcement in road widening project
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011Co-Authors: Gao Shui-qinAbstract:Based on the case study of soft Soil Reinforcement on Baian interchange, Gaofu Road, Shunde District, Foshan, the designing method and monitoring program of sand bag well applied on the soft Soil Reinforcement in road widening project were introduced systematically. The settlement monitoring results during the preloading process indicated that the raise of the preloading height significantly increased the consolidation and settlement of soft Soil ground. The settlemental rate was much greater at the beginning and medium-term of the preloading. While during the later preloading and the followed consolidating period, the settlement rate slowed down obviously. Therefore, it is very important to control the magnitude of each loading grade and the settlement rate at the beginning and medium-term of preloading. It was found that there was a desirable Reinforcement effect and economic benefit applying sand bag well method to consolidate the soft Soil ground at the case of overpass extension engineering in road widening project. The sand bag well method is valued being applied in similar projects.
-
Case study of sand bag well applied on soft Soil Reinforcement in road widening project
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011Co-Authors: Gao Shui-qinAbstract:Based on the case study of soft Soil Reinforcement on Baian interchange, Gaofu Road, Shunde District, Foshan, the designing method and monitoring program of sand bag well applied on the soft Soil Reinforcement in road widening project were introduced systematically. The settlement monitoring results during the preloading process indicated that the raise of the preloading height significantly increased the consolidation and settlement of soft Soil ground. The settlemental rate was much greater at the beginning and medium-term of the preloading. While during the later proloading and the followed consolidating period, the settlement rate slowed down obviously. Therefore, it is very important to control the magnitude of each loading grade and the settlement rate at the beginning and medium-term of preloading. It was found that there was a desirable Reinforcement effect and economic benefit applying sand bag well method to consolidate the soft Soil ground at the case of overpass extension engineering in road widening project. The sand bag well method is valued being applied in similar projects.
Fangding He - One of the best experts on this subject based on the ideXlab platform.
-
experimental study on the pullout behavior of scrap tire strips and their application as Soil Reinforcement
Construction and Building Materials, 2020Co-Authors: Hongbo Zhang, Xuefeng Yuan, Jianqing Wu, Xiuguang Song, Fangding HeAbstract:Abstract The recycling and reuse of scrap tires is a popular area of study in sustainability-driven pavement development. However, several common methods of using scrap tires cannot take advantage of their residual performance. This study examines cutting scrap tires into strips and applying them for Soil Reinforcement. Pullout performance is an important index for evaluating geotechnical materials’ interface characteristics, but the pullout performance of scrap tires under multi-factor conditions has not been comprehensively studied. Pullout tests for single tire strips and tire strip meshes under different normal stresses were carried out to explore their interface characteristics. The results showed that the equivalent friction angle at the tire strip-sand interface is 68.1% to 71.5% greater than the internal friction angle of sand, indicating that there is an interlocking effect between the tire strip and the sand, which mobilizes pullout resistance to external tension. The processed mesh tire strip provides greater pullout resistance due to the bearing resistance of the transverse member. Comparing the experimental values of the transverse member end resistance to the calculated values from three failure models, the experimental values fall between the calculated values for the general shear failure mode and the modified punching shear failure mode. This study suggests the feasibility of processing scrap tires into strips and applying them as Soil Reinforcement.
S Belkacemi - One of the best experts on this subject based on the ideXlab platform.
-
effect of Soil Reinforcement interaction coefficient on Reinforcement tension distribution of reinforced slopes
Geotextiles and Geomembranes, 2020Co-Authors: H Djeffal, S BelkacemiAbstract:Abstract This paper examines the effect of the mobilized Reinforcement tension within reinforced Soil slope at a different level of Soil-geosynthetic interaction. The mobilized Reinforcement tension is assumed, in most design methods for the internal stability of reinforced slopes, to be equal to mobilized Soil forces computed using a limit equilibrium method. However, comparison with the Reinforcement tension force measured in the field has shown that this approach is conservative. This paper examines the effects of the Soil-Reinforcement interaction coefficient on the tensile redistribution of geosynthetics. The modified process of Bishop Method of slope stability analysis is used to locate the critical slip surface and to calculate the mobilized Reinforcement tensile force. The Reinforcement forces obtained from field data and on centrifuge model test results for a reinforced slope problem are used to examine the relationship between mobilized Reinforcement tensile force and mobilized Soil shear strength.
Ivonne A. G. Góngora - One of the best experts on this subject based on the ideXlab platform.
-
assessing the influence of some Soil Reinforcement interaction parameters on the performance of a low fill on compressible subgrade part i fill performance and relevance of interaction parameters
International Journal of Geosynthetics and Ground Engineering, 2016Co-Authors: E M Palmeira, Ivonne A. G. GóngoraAbstract:Soil–geosynthetic interaction is a complex subject, particularly in geogrid reinforced structures. Geosynthetic Reinforcement can be used to improve the performance of granular layers on compressible subgrades in situations such as paved and unpaved roads and in reinforced foundations. This paper presents results of large scale cyclic loading tests on reinforced and unreinforced granular layers on a compressible subgrade. A woven geotextile and different geogrids were used as Reinforcement. The geogrids were chosen aiming at achieving a wide range of values of some physical and mechanical properties to allow the investigation of the influence of some relevant properties related to Soil–Reinforcement interaction on the geogrid performance. The results obtained showed that geogrid Reinforcement tensile stiffness and some of its physical properties such as aperture–fill particle diameter ratio, thickness and fraction of grid area available for bearing are important properties for grid performance as Reinforcement in granular layers. A dimensionless parameter taking into account several geogrid properties has been introduced and shows good correlation with test results. On the other hand, no correlation was noted between geogrid aperture stability modulus and granular layer performance for the conditions of the tests carried out. The results show that a geogrid Reinforcement should not be specified based only on its tensile stiffness and strength, since other properties play important roles in the gravel layer performance. This is particularly relevant for reinforced unpaved roads and railway tracks.
-
Assessing the Influence of Some Soil–Reinforcement Interaction Parameters on the Performance of a Low Fill on Compressible Subgrade. Part I: Fill Performance and Relevance of Interaction Parameters
International Journal of Geosynthetics and Ground Engineering, 2015Co-Authors: Ennio M. Palmeira, Ivonne A. G. GóngoraAbstract:Soil–geosynthetic interaction is a complex subject, particularly in geogrid reinforced structures. Geosynthetic Reinforcement can be used to improve the performance of granular layers on compressible subgrades in situations such as paved and unpaved roads and in reinforced foundations. This paper presents results of large scale cyclic loading tests on reinforced and unreinforced granular layers on a compressible subgrade. A woven geotextile and different geogrids were used as Reinforcement. The geogrids were chosen aiming at achieving a wide range of values of some physical and mechanical properties to allow the investigation of the influence of some relevant properties related to Soil–Reinforcement interaction on the geogrid performance. The results obtained showed that geogrid Reinforcement tensile stiffness and some of its physical properties such as aperture–fill particle diameter ratio, thickness and fraction of grid area available for bearing are important properties for grid performance as Reinforcement in granular layers. A dimensionless parameter taking into account several geogrid properties has been introduced and shows good correlation with test results. On the other hand, no correlation was noted between geogrid aperture stability modulus and granular layer performance for the conditions of the tests carried out. The results show that a geogrid Reinforcement should not be specified based only on its tensile stiffness and strength, since other properties play important roles in the gravel layer performance. This is particularly relevant for reinforced unpaved roads and railway tracks.
Hongbo Zhang - One of the best experts on this subject based on the ideXlab platform.
-
experimental study on the pullout behavior of scrap tire strips and their application as Soil Reinforcement
Construction and Building Materials, 2020Co-Authors: Hongbo Zhang, Xuefeng Yuan, Jianqing Wu, Xiuguang Song, Fangding HeAbstract:Abstract The recycling and reuse of scrap tires is a popular area of study in sustainability-driven pavement development. However, several common methods of using scrap tires cannot take advantage of their residual performance. This study examines cutting scrap tires into strips and applying them for Soil Reinforcement. Pullout performance is an important index for evaluating geotechnical materials’ interface characteristics, but the pullout performance of scrap tires under multi-factor conditions has not been comprehensively studied. Pullout tests for single tire strips and tire strip meshes under different normal stresses were carried out to explore their interface characteristics. The results showed that the equivalent friction angle at the tire strip-sand interface is 68.1% to 71.5% greater than the internal friction angle of sand, indicating that there is an interlocking effect between the tire strip and the sand, which mobilizes pullout resistance to external tension. The processed mesh tire strip provides greater pullout resistance due to the bearing resistance of the transverse member. Comparing the experimental values of the transverse member end resistance to the calculated values from three failure models, the experimental values fall between the calculated values for the general shear failure mode and the modified punching shear failure mode. This study suggests the feasibility of processing scrap tires into strips and applying them as Soil Reinforcement.
