نتایج جستجو برای: expansive subgrades

تعداد نتایج: 5179  

Journal: :Frontiers in Earth Science 2023

Crack development in a changing environment is the controlling factor for stability and strength of expansive soils. Expansive soils exhibit large volumetric changes with their moisture conditions that may occasionally lead to reduced bearing capacity foundation failures. This study purports model crack initiation its spatial progression relation content drying period, respectively. Volumetric ...

Journal: :International Journal of Pavement Engineering 2023

The stabilisation of expansive clay subgrades using recycled glass (RG) was proposed, as a sustainable ground improvement technique. Previous studies mainly focused on RG powder with contents up to 10%, while the current study utilised sand-size particles and 40% content. Physical properties, compressibility, strength characteristics, long-term climatic effects volumetric behaviour stabilised w...

Journal: :Transportation Overview - Przeglad Komunikacyjny 2016

Journal: :MATEC web of conferences 2022

The stability of loess subgrade is affected by many factors. Freeze-thaw cycles are a common factor that causes the strength subgrades to be damaged. In order study influence freezethaw on subgrades, reveal mechanism freeze-thaw subgrades. It necessary sample soil samples in this area, and perform compaction test, cycle unconfined compression test electron microscope scanning analyze microstruc...

2012
Shongtao Dai

––The performance of pavements depends to a large extent on the strength and stiffness of the subgrades. Subgrade strength (CBR) plays a major role in pavement design. Since determination of CBR value in field requires need of equipment and also time consuming alternatively one can be predict CBR value of subgrade in field from other soil support tests namely Dynamic Cone Penetrometer Index (DC...

Journal: :bulletin of the iranian mathematical society 2011
b. ahmadi kakavandi m. amini

hadamard (or complete $cat(0)$) spaces are complete, non-positive curvature, metric spaces. here, we prove a nonlinear ergodic theorem for continuous non-expansive semigroup in these spaces as well as a strong convergence theorem for the commutative case. our results extend the standard non-linear ergodic theorems for non-expansive maps on real hilbert spaces, to non-expansive maps on had...

Granular Pile Anchor (GPA) considers one of the solution foundation techniques, designed to mitigate the lifting of the sole resulting from expansive soils. This study work is to investigate the uplift movement response of (GPA) in expansive soil. The laboratory tests have been performed on an experimental. The effects of several parameters, such as length (L) of (GPA) and diameter (D), the thi...

2002
J. P. Hambleton A. Drescher

Test rolling is a quality assessment technique performed on road construction materials to verify consistency prior to paving. In this test, the depth to which the wheels of a heavy vehicle penetrate the material is used as a measure of quality. Current test rolling specifications are based largely on empirical data. In this paper, theoretical models are presented for the case of a test roller ...

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