In this work, the settlement deformation of soft-soil subgrade and law geogrid were studied based on field tests carried out pile-supported reinforced embankment Rongwu Expressway in Xiong’an New Area. The reinforcement area underlying layer embankment, transverse longitudinal sections subgrade, bidirectional analyzed. results show that reducing pile spacing height can effectively reduce founda...

The current study examines how an unpaved road behaves when it is installed on top of a soft clay layer that's been strengthened at the subgrade/subbase interface with single geogrid type SS2 used to reinforce laboratory model, and cycling load apply repeated loads model. Subbases without reinforcement over subgrade were built in sizable test box. (1000 mm×1000 mm). results show that using enha...

ABSTRAKDalam desain jenis perkerasan di fasilitas Runway Bandar Udara dibedakan menjadi kaku dan lentur, memiliki karakteristik sistem distribusi tegangan sampai subgrade yang berbeda, terutama pada perubahan nilai parameter desain. Hal ini akan mempengaruhi penurunan umur layan. Penelitian bertujuan untuk memodelkan hubungan layan terhadap yaitu peningkatan annual departure lalu lintas pesawat...

in this study, the performance of shred tire mixed with railway subgrade is evaluated to reduce environmental vibrations caused by trains’ passage. since incorporating the shred tire seeds in soil affects on its shear strength and deformability parameters so, the first stage of the study was allocated to conducting a series of laboratory tests such as the unconfined compression test, and cbr an...

Railways are one of the largest transportation networks in world. One key subgrade problems railway track is associated with progressive shear failure (PSF). To-date, limited number studies have addressed mechanism PSF, especially extending mechanics unsaturated soils. In this paper, PSF studied aid computer program that was developed using a Visual Basic AutoCAD, Mohr-Coulomb criteria within s...

This paper tries to study the effect of geosynthetic inclusion on the improvement of the load-settlement characters of two layered soil. In addition, the effect of geogrid and geotextile in reduction of the required thickness of subbase layer in unpaved roads is studied. Considering the vast application of bearing ratio tests in road construction projects, this test is used in present investiga...

Mechanistic pavement design procedures based on elastic layer theory require characterization of all pavement layer materials including subgrade soil. This paper discusses the subgrade stiffness obtained from a new compaction device called the Intelligent Compaction (IC) roller on highway embankment projects in Kansas. Three test sections on two routes were compacted using a single, smooth stee...

spending costs in construction of road pavements has turned this subject into one of the significant points in transportation infrastructure of countries. concrete slabs consider as a paving method with ability of reducing the rehabilitation needs. therefore, to manage costs and optimize the thickness of concrete pavements, recognizing the amount of determinative factors’ influence will be requ...